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import re
import streamlit as st
from datetime import datetime, date, time, timedelta
from pathlib import Path
# from utils.sample_data import SAMPLE_COURSES, SAMPLE_SESSIONS
from session_page import display_session_content
from db import (
    courses_collection2,
    faculty_collection,
    students_collection,
    research_assistants_collection,
    analysts_collection,
)
from werkzeug.security import generate_password_hash, check_password_hash
import os
from openai import OpenAI
from dotenv import load_dotenv
from create_course2 import create_course, courses_collection, generate_perplexity_response, generate_session_resources, PERPLEXITY_API_KEY, validate_course_plan
import json
from bson import ObjectId
client = OpenAI(api_key=os.getenv("OPENAI_KEY"))
from dotenv import load_dotenv
from create_course3 import generate_course_outcomes, generate_resources_by_titles_chunking, generate_session_outcomes, generate_module_outcomes, generate_submodule_outcomes, generate_session_resources, GEMINI_API_KEY, PERPLEXITY_API_KEY, merge_course_structure
load_dotenv()
# PERPLEXITY_API_KEY = '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'

def get_research_papers(query):
    """Get research paper recommendations based on query"""
    try:
        response = client.chat.completions.create(
            model="gpt-3.5-turbo",
            messages=[
                {
                    "role": "system",
                    "content": "You are a helpful research assistant. Provide 10 relevant research papers with titles, authors, brief descriptions, and DOI/URL links. Format each paper as: \n\n1. **Title**\nAuthors: [names]\nLink: [DOI/URL]\nDescription: [brief summary]",
                },
                {
                    "role": "user",
                    "content": f"Give me 10 research papers about: {query}. Include valid DOI links or URLs to the papers where available.",
                },
            ],
        )
        return response.choices[0].message.content
    except Exception as e:
        return f"Error getting recommendations: {str(e)}"


def analyze_research_gaps(papers):
    """Analyze gaps in research based on recommended papers"""
    try:
        response = client.chat.completions.create(
            model="gpt-3.5-turbo",
            messages=[
                {
                    "role": "system",
                    "content": "You are a research analysis expert. Based on the provided papers, identify potential research gaps and future research directions.",
                },
                {
                    "role": "user",
                    "content": f"Based on these papers, what are the key areas that need more research?\n\nPapers:\n{papers}",
                },
            ],
        )
        return response.choices[0].message.content
    except Exception as e:
        return f"Error analyzing research gaps: {str(e)}"


def init_session_state():
    """Initialize session state variables"""
    if "authenticated" not in st.session_state:
        st.session_state.authenticated = False
    if "user_id" not in st.session_state:
        st.session_state.user_id = None
    if "user_type" not in st.session_state:
        st.session_state.user_type = None
    if "username" not in st.session_state:
        st.session_state.username = None
    if "selected_course" not in st.session_state:
        st.session_state.selected_course = None
    if "show_create_course_form" not in st.session_state:
        st.session_state.show_create_course_form = False
    if "show_create_session_form" not in st.session_state:
        st.session_state.show_create_session_form = False
    if "show_enroll_course_page" not in st.session_state:
        st.session_state.show_enroll_course_page = False
    if "course_to_enroll" not in st.session_state:
        st.session_state.course_to_enroll = None

def login_user(username, password, user_type):
    """Login user based on credentials"""
    if user_type == "student":
        # user = students_collection.find_one({"full_name": username}) or students_collection.find_one({"username": username})
        user = students_collection.find_one({"$or": [{"full_name": username}, {"username": username}]})
    elif user_type == "faculty":
        user = faculty_collection.find_one({"full_name": username})
    elif user_type == "research_assistant":
        user = research_assistants_collection.find_one({"full_name": username})
    elif user_type == "analyst":
        user = analysts_collection.find_one({"full_name": username})

    if user and check_password_hash(user["password"], password):
        st.session_state.user_id = user["_id"]
        print(st.session_state.user_id)
        st.session_state.authenticated = True
        st.session_state.user_type = user_type
        st.session_state.username = username
        return True
    return False

# def login_form():
#     """Display login form"""
#     st.title("Welcome to NOVAScholar")

#     with st.form("login_form"):
        
#         user_type = st.selectbox(
#             "Please select your Role", ["student", "faculty", "research_assistant", "analyst"]
#         )
#         username = st.text_input("Username")
#         password = st.text_input("Password", type="password")
#         submit = st.form_submit_button("Login")

#         if submit:
#             if login_user(username, password, user_type):
#                 st.success("Login successful!")
#                 st.rerun()
#             else:
#                 st.error("Invalid credentials!")
def login_form():
    """Display enhanced login form"""
    st.title("Welcome to NOVAScholar")

    with st.form("login_form"):
        # Role selection at the top
        user_type = st.selectbox(
            "Please select your Role",
            ["student", "faculty", "research_assistant", "analyst"]
        )
        
        # Username/email and password stacked vertically
        username = st.text_input("Username or Email")
        password = st.text_input("Password", type="password")
        
        # Login button
        submit = st.form_submit_button("Login")

        if submit:
            # Handle both username and email login
            if '@' in username:
                username = extract_username(username)
            
            if login_user(username, password, user_type):
                st.success("Login successful!")
                st.rerun()
            else:
                st.error("Invalid credentials!")

def get_courses(username, user_type):
    if user_type == "student":
        student = students_collection.find_one({"$or": [{"full_name": username}, {"username": username}]}) 
        if student:
            enrolled_course_ids = [
                course["course_id"] for course in student.get("enrolled_courses", [])
            ]
            courses = courses_collection.find(
                {"course_id": {"$in": enrolled_course_ids}}
            )
            # courses += courses_collection2.find(
            #     {"course_id": {"$in": enrolled_course_ids}}
            # )
            # # course_titles = [course['title'] for course in courses]
            # return list(courses)
            # courses_cursor1 = courses_collection.find(
            #     {"course_id": {"$in": enrolled_course_ids}}
            # )
            # courses_cursor2 = courses_collection2.find(
            #     {"course_id": {"$in": enrolled_course_ids}}
            # )
            # courses = list(courses_cursor1) + list(courses_cursor2)
            return list(courses)
    elif user_type == "faculty":
        faculty = faculty_collection.find_one({"full_name": username})
        if faculty:
            course_ids = [
                course["course_id"] for course in faculty.get("courses_taught", [])
            ]
            # courses_1 = list(courses_collection2.find({"course_id": {"$in": course_ids}}))
            courses_2 = list(courses_collection.find({"course_id": {"$in": course_ids}}))
            return courses_2
    elif user_type == "research_assistant":
        research_assistant = research_assistants_collection.find_one(
            {"full_name": username}
        )
        if research_assistant:
            course_ids = [
                course["course_id"]
                for course in research_assistant.get("courses_assisted", [])
            ]
            courses = courses_collection2.find({"course_id": {"$in": course_ids}})
            return list(courses)
    else:
        return []


def get_course_ids():
    """Get course IDs for sample courses"""
    return [course["course_id"] for course in SAMPLE_COURSES]


def get_sessions(course_id, course_title):
    """Get sessions for a given course ID"""
    course = courses_collection.find_one({"course_id": course_id, "title": course_title})
    if course:
        return course.get("sessions", [])
    return []


def create_session(new_session, course_id):
    """Create a new session for a given course ID"""
    course = courses_collection2.find_one({"course_id": course_id}) | courses_collection.find_one({"course_id": course_id})
    if course:
        last_session_id = max((session["session_id"] for session in course["sessions"]))
        last_session_id = int(last_session_id[1:])
        new_session_id = last_session_id + 1
        new_session["session_id"] = "S" + str(new_session_id)
        courses_collection2.update_one(
            {"course_id": new_session["course_id"]},
            {"$push": {"sessions": new_session}},
        )
        return True
    return False


def create_session_form(course_id):
    """Display form to create a new session and perform the creation operation"""
    st.title("Create New Session")

    if 'session_time' not in st.session_state:
        st.session_state.session_time = datetime.now().time()
    if 'show_create_session_form' not in st.session_state:
        st.session_state.show_create_session_form = False

    with st.form("create_session_form"):
        session_title = st.text_input("Session Title")
        session_date = st.date_input("Session Date", date.today(), key="session_date")
        session_time = st.time_input(
            "Session Time", st.session_state.session_time, key="session_time"
        )

        new_session_id = None
        # Generate new session ID
        course = courses_collection2.find_one({"course_id": course_id})
        if course and "sessions" in course and course["sessions"]:
            last_session_id = max(
                int(session["session_id"][1:]) for session in course["sessions"]
            )
            new_session_id = last_session_id + 1
        else:
            new_session_id = 1

        if st.form_submit_button("Create Session"):
            clicked = True
            new_session = {
                "session_id": f"S{new_session_id}",
                "course_id": course_id,
                "title": session_title,
                "date": datetime.combine(session_date, session_time),
                "status": "upcoming",
                "created_at": datetime.utcnow(),
                "pre_class": {
                    "resources": [],
                    "completetion_required": True,
                },
                "in_class": {
                    "topics": [],
                    "quiz": {"title": "", "questions": 0, "duration": 0},
                    "polls": [],
                },
                "post_class": {
                    "assignments": [],
                },
            }
            courses_collection2.update_one(
                {"course_id": course_id}, {"$push": {"sessions": new_session}}
            )
            st.success("Session created successfully!")
            st.session_state.show_create_session_form = False

    #     new_session_id = None
    #     creation_success = False
    #     # Generate new session ID
    #     course = courses_collection2.find_one({"course_id": course_id})
    #     if course and 'sessions' in course and course['sessions']:
    #         last_session_id = max((session['session_id'] for session in course['sessions']))
    #         last_session_id = int(last_session_id[1:])
    #         new_session_id = last_session_id + 1
    #     else:
    #         new_session_id = 1

    #         new_session = {
    #             "session_id": 'S' + new_session_id,
    #             "title": session_title,
    #             "date": datetime.datetime.combine(session_date, session_time).isoformat(),
    #             "status": "upcoming",
    #             "created_at": datetime.datetime.utcnow().isoformat(),
    #             "pre_class": {
    #                 "resources": [],
    #                 "completetion_required": True,
    #             },
    #             "in_class": {
    #                 "topics": [],
    #                 "quiz":
    #                 {
    #                     "title": '',
    #                     "questions": 0,
    #                     "duration": 0
    #                 },
    #                 "polls": []
    #             },
    #             "post_class": {
    #                 "assignments": [],
    #             }
    #         }
    #         courses_collection2.update_one(
    #             {"course_id": course_id},
    #             {"$push": {"sessions": new_session}}
    #             )
    #         creation_success = True
    #     st.form_submit_button("Create Session")
    # if creation_success == True:
    #     st.success("Session created successfully!")
    # else:


def get_new_student_id():
    """Generate a new student ID by incrementing the last student ID"""
    last_student = students_collection.find_one(sort=[("SID", -1)])
    if last_student:
        last_student_id = int(last_student["SID"][1:])
        new_student_id = f"S{last_student_id + 1}"
    else:
        new_student_id = "S101"
    return new_student_id


def get_new_faculty_id():
    """Generate a new faculty ID by incrementing the last faculty ID"""
    last_faculty = faculty_collection.find_one(sort=[("TID", -1)])
    if last_faculty:
        last_faculty_id = int(last_faculty["TID"][1:])
        new_faculty_id = f"T{last_faculty_id + 1}"
    else:
        new_faculty_id = "T101"
    return new_faculty_id


def get_new_course_id():
    """Generate a new course ID by incrementing the last course ID"""
    last_course = courses_collection2.find_one(sort=[("course_id", -1)])
    if last_course:
        last_course_id = int(last_course["course_id"][2:])
        new_course_id = f"CS{last_course_id + 1}"
    else:
        new_course_id = "CS101"
    return new_course_id


# def register_page():
#     st.title("Register")
#     if "user_type" not in st.session_state:
#         st.session_state.user_type = "student"

#     # Select user type
#     st.session_state.user_type = st.selectbox(
#         "Select User Type", ["student", "faculty", "research_assistant"]
#     )
#     user_type = st.session_state.user_type
#     print(user_type)

#     with st.form("register_form"):
#         # user_type = st.selectbox("Select User Type", ["student", "faculty", "research_assistant"])
#         # print(user_type)
#         full_name = st.text_input("Full Name")
#         password = st.text_input("Password", type="password")
#         confirm_password = st.text_input("Confirm Password", type="password")

#         if user_type == "student":
#             # Fetch courses for students to select from
#             courses = list(courses_collection2.find({}, {"course_id": 1, "title": 1}))
#             course_options = [
#                 f"{course['title']} ({course['course_id']})" for course in courses
#             ]
#             selected_courses = st.multiselect("Available Courses", course_options)

#         submit = st.form_submit_button("Register")

#         if submit:
#             if password == confirm_password:
#                 hashed_password = generate_password_hash(password)
#                 if user_type == "student":
#                     new_student_id = get_new_student_id()
#                     enrolled_courses = [
#                         {
#                             "course_id": course.split("(")[-1][:-1],
#                             "title": course.split(" (")[0],
#                         }
#                         for course in selected_courses
#                     ]
#                     students_collection.insert_one(
#                         {
#                             "SID": new_student_id,
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "enrolled_courses": enrolled_courses,
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success(
#                         f"Student registered successfully with ID: {new_student_id}"
#                     )
#                 elif user_type == "faculty":
#                     new_faculty_id = get_new_faculty_id()
#                     faculty_collection.insert_one(
#                         {
#                             "TID": new_faculty_id,
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "courses_taught": [],
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success(
#                         f"Faculty registered successfully with ID: {new_faculty_id}"
#                     )
#                 elif user_type == "research_assistant":
#                     research_assistants_collection.insert_one(
#                         {
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success("Research Assistant registered successfully!")
#             else:
#                 st.error("Passwords do not match")


def get_new_analyst_id():
    """Generate a new analyst ID by incrementing the last analyst ID"""
    last_analyst = analysts_collection.find_one(sort=[("AID", -1)])
    if last_analyst:
        last_id = int(last_analyst["AID"][1:])
        new_id = f"A{last_id + 1}"
    else:
        new_id = "A1"
    return new_id


# def register_page():
#     st.title("Register")
#     if "user_type" not in st.session_state:
#         st.session_state.user_type = "student"

#     # Select user type
#     st.session_state.user_type = st.selectbox(
#         "Please select your Role", ["student", "faculty", "research_assistant", "analyst"]
#     )
#     user_type = st.session_state.user_type
#     print(user_type)

#     with st.form("register_form"):

#         full_name = st.text_input("Full Name")
#         password = st.text_input("Password", type="password")
#         confirm_password = st.text_input("Confirm Password", type="password")

#         if user_type == "student":
#             # Fetch courses for students to select from
#             courses = list(courses_collection.find({}, {"course_id": 1, "title": 1}))
#             course_options = [
#                 f"{course['title']} ({course['course_id']})" for course in courses
#             ]
#             selected_courses = st.multiselect("Available Courses", course_options)

#         submit = st.form_submit_button("Register")

#         if submit:
#             if password == confirm_password:
#                 hashed_password = generate_password_hash(password)
#                 if user_type == "student":
#                     new_student_id = get_new_student_id()
#                     enrolled_courses = [
#                         {
#                             "course_id": course.split("(")[-1][:-1],
#                             "title": course.split(" (")[0],
#                         }
#                         for course in selected_courses
#                     ]
#                     students_collection.insert_one(
#                         {
#                             "SID": new_student_id,
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "enrolled_courses": enrolled_courses,
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success(
#                         f"Student registered successfully with ID: {new_student_id}"
#                     )
#                 elif user_type == "faculty":
#                     new_faculty_id = get_new_faculty_id()
#                     faculty_collection.insert_one(
#                         {
#                             "TID": new_faculty_id,
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "courses_taught": [],
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success(
#                         f"Faculty registered successfully with ID: {new_faculty_id}"
#                     )
#                 elif user_type == "research_assistant":
#                     research_assistants_collection.insert_one(
#                         {
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success("Research Assistant registered successfully!")
#                 elif user_type == "analyst":
#                     # new_analyst_id = get_new_analyst_id()
#                     analysts_collection.insert_one(
#                         {
#                             # "AID": new_analyst_id,
#                             "full_name": full_name,
#                             "password": hashed_password,
#                             "created_at": datetime.utcnow(),
#                         }
#                     )
#                     st.success("Analyst registered successfully!")
#             else:
#                 st.error("Passwords do not match")
def register_page():
    st.title("Register for NOVAScholar")
    if "user_type" not in st.session_state:
        st.session_state.user_type = "student"

    # Select user type
    st.session_state.user_type = st.selectbox(
        "Please select your Role", 
        ["student", "faculty", "research_assistant", "analyst"]
    )
    user_type = st.session_state.user_type

    with st.form("register_form"):
        col1, col2 = st.columns(2)
        
        with col1:
            full_name = st.text_input("Full Name")
            email = st.text_input("Institutional Email")
            phone = st.text_input("Phone Number")
        
        with col2:
            password = st.text_input("Password", type="password")
            confirm_password = st.text_input("Confirm Password", type="password")

        if user_type == "student":
            courses = list(courses_collection.find({}, {"course_id": 1, "title": 1}))
            course_options = [f"{course['title']} ({course['course_id']})" for course in courses]
            selected_courses = st.multiselect("Available Courses", course_options)

        submit = st.form_submit_button("Register")

        if submit:
            # Validate email
            email_valid, email_msg = validate_email(email)
            if not email_valid:
                st.error(email_msg)
                return

            # Validate phone
            phone_valid, phone_msg = validate_phone(phone)
            if not phone_valid:
                st.error(phone_msg)
                return

            # Validate password match
            if password != confirm_password:
                st.error("Passwords do not match")
                return

            # Extract username from email
            username = extract_username(email)

            # Check if username already exists
            if user_type == "student":
                existing_user = students_collection.find_one({"username": username})
            elif user_type == "faculty":
                existing_user = faculty_collection.find_one({"username": username})
            elif user_type == "research_assistant":
                existing_user = research_assistants_collection.find_one({"username": username})
            elif user_type == "analyst":
                existing_user = analysts_collection.find_one({"username": username})

            if existing_user:
                st.error("A user with this email already exists")
                return

            # Hash password and create user
            hashed_password = generate_password_hash(password)
            
            user_data = {
                "username": username,
                "full_name": full_name,
                "email": email,
                "phone": phone,
                "password": hashed_password,
                "created_at": datetime.utcnow()
            }

            if user_type == "student":
                new_student_id = get_new_student_id()
                enrolled_courses = [
                    {
                        "course_id": course.split("(")[-1][:-1],
                        "title": course.split(" (")[0],
                    }
                    for course in selected_courses
                ]
                user_data["SID"] = new_student_id
                user_data["enrolled_courses"] = enrolled_courses
                students_collection.insert_one(user_data)
                st.success(f"Student registered successfully! Your username is: {username}")
                
            elif user_type == "faculty":
                new_faculty_id = get_new_faculty_id()
                user_data["TID"] = new_faculty_id
                user_data["courses_taught"] = []
                faculty_collection.insert_one(user_data)
                st.success(f"Faculty registered successfully! Your username is: {username}")
                
            elif user_type == "research_assistant":
                research_assistants_collection.insert_one(user_data)
                st.success(f"Research Assistant registered successfully! Your username is: {username}")
                
            elif user_type == "analyst":
                analysts_collection.insert_one(user_data)
                st.success(f"Analyst registered successfully! Your username is: {username}")

# Create Course feature
# def create_course_form2(faculty_name, faculty_id):
#     """Display enhanced form to create a new course with AI-generated content"""
#     st.title("Create New Course")
    
#     if 'course_plan' not in st.session_state:
#         st.session_state.course_plan = None
#     if 'edit_mode' not in st.session_state:
#         st.session_state.edit_mode = False

#     # Initial Course Creation Form
#     if not st.session_state.course_plan:
#         with st.form("initial_course_form"):
#             col1, col2 = st.columns(2)
#             with col1:
#                 course_name = st.text_input("Course Name", placeholder="e.g., Introduction to Computer Science")
#                 faculty_info = st.text_input("Faculty", value=faculty_name, disabled=True)
#             with col2:
#                 duration_weeks = st.number_input("Duration (weeks)", min_value=1, max_value=16, value=12)
#                 start_date = st.date_input("Start Date")
            
#             generate_button = st.form_submit_button("Generate Course Structure", use_container_width=True)
            
#             if generate_button and course_name:
#                 with st.spinner("Generating course structure..."):
#                     try:
#                         course_plan = generate_perplexity_response(PERPLEXITY_API_KEY, course_name)
#                         # print(course_plan)
#                         st.session_state.course_plan = json.loads(course_plan)
#                         st.session_state.start_date = start_date
#                         st.session_state.duration_weeks = duration_weeks
#                         st.rerun()
#                     except Exception as e:
#                         st.error(f"Error generating course structure: {e}")
    
#     # Display and Edit Generated Course Content
#     if st.session_state.course_plan:
#         with st.expander("Course Overview", expanded=True):
#             if not st.session_state.edit_mode:
#                 st.subheader(st.session_state.course_plan['course_title'])
#                 st.write(st.session_state.course_plan['course_description'])
#                 edit_button = st.button("Edit Course Details", use_container_width=True)
#                 if edit_button:
#                     st.session_state.edit_mode = True
#                     st.rerun()
#             else:
#                 with st.form("edit_course_details"):
#                     st.session_state.course_plan['course_title'] = st.text_input(
#                         "Course Title", 
#                         value=st.session_state.course_plan['course_title']
#                     )
#                     st.session_state.course_plan['course_description'] = st.text_area(
#                         "Course Description", 
#                         value=st.session_state.course_plan['course_description']
#                     )
#                     if st.form_submit_button("Save Course Details"):
#                         st.session_state.edit_mode = False
#                         st.rerun()
        
#         # Display Modules and Sessions
#         st.subheader("Course Modules and Sessions")
        
#         start_date = st.session_state.start_date
#         current_date = start_date
        
#         all_sessions = []
#         for module_idx, module in enumerate(st.session_state.course_plan['modules']):
#             with st.expander(f"πŸ“š Module {module_idx + 1}: {module['module_title']}", expanded=True):
#                 # Edit module title
#                 new_module_title = st.text_input(
#                     f"Module {module_idx + 1} Title",
#                     value=module['module_title'],
#                     key=f"module_{module_idx}"
#                 )
#                 module['module_title'] = new_module_title
                
#                 for sub_idx, sub_module in enumerate(module['sub_modules']):
#                     st.markdown(f"### πŸ“– {sub_module['title']}")
                    
#                     # Create sessions for each topic
#                     for topic_idx, topic in enumerate(sub_module['topics']):
#                         session_key = f"session_{module_idx}_{sub_idx}_{topic_idx}"
                        
#                         with st.container():
#                             col1, col2, col3 = st.columns([3, 2, 1])
#                             with col1:
#                                 new_topic = st.text_input(
#                                     "Topic",
#                                     value=topic,
#                                     key=f"{session_key}_topic"
#                                 )
#                                 sub_module['topics'][topic_idx] = new_topic
                            
#                             with col2:
#                                 session_date = st.date_input(
#                                     "Session Date",
#                                     value=current_date,
#                                     key=f"{session_key}_date"
#                                 )
                            
#                             with col3:
#                                 session_status = st.selectbox(
#                                     "Status",
#                                     options=["upcoming", "in-progress", "completed"],
#                                     key=f"{session_key}_status"
#                                 )
                            
#                             # Create session object
#                             session = {
#                                 "session_id": str(ObjectId()),
#                                 "title": new_topic,
#                                 "date": datetime.combine(session_date, datetime.min.time()),
#                                 "status": session_status,
#                                 "module_name": module['module_title'],
#                                 "created_at": datetime.utcnow(),
#                                 "pre_class": {
#                                     "resources": [],
#                                     "completion_required": True
#                                 },
#                                 "in_class": {
#                                     "quiz": [],
#                                     "polls": []
#                                 },
#                                 "post_class": {
#                                     "assignments": []
#                                 }
#                             }
#                             all_sessions.append(session)
#                             current_date = session_date + timedelta(days=7)
        
#         new_course_id = get_new_course_id()
#         course_title = st.session_state.course_plan['course_title']
#         # Final Save Button
#         if st.button("Save Course", type="primary", use_container_width=True):
#             try:
#                 course_doc = {
#                     "course_id": new_course_id,
#                     "title": course_title,
#                     "description": st.session_state.course_plan['course_description'],
#                     "faculty": faculty_name,
#                     "faculty_id": faculty_id,
#                     "duration": f"{st.session_state.duration_weeks} weeks",
#                     "start_date": datetime.combine(st.session_state.start_date, datetime.min.time()),
#                     "created_at": datetime.utcnow(),
#                     "sessions": all_sessions
#                 }
                
#                 # Insert into database
#                 courses_collection.insert_one(course_doc)
                
#                 st.success("Course successfully created!")

#                 # Update faculty collection
#                 faculty_collection.update_one(
#                     {"_id": st.session_state.user_id},
#                     {
#                         "$push": {
#                             "courses_taught": {
#                                 "course_id": new_course_id,
#                                 "title": course_title,
#                             }
#                         }
#                     },
#                 )

#                 # Clear session state
#                 st.session_state.course_plan = None
#                 st.session_state.edit_mode = False
                
#                 # Optional: Add a button to view the created course
#                 if st.button("View Course"):
#                     # Add navigation logic here
#                     pass
                
#             except Exception as e:
#                 st.error(f"Error saving course: {e}")
    

def remove_json_backticks(json_string):
    """Remove backticks and 'json' from the JSON object string"""
    return json_string.replace("```json", "").replace("```", "").strip()


# def create_course_form(faculty_name, faculty_id):
#     """Display enhanced form to create a new course with AI-generated content and resources"""
    
#     st.title("Create New Course")
    
#     if 'course_plan' not in st.session_state:
#         st.session_state.course_plan = None
#     if 'edit_mode' not in st.session_state:
#         st.session_state.edit_mode = False
#     if 'resources_map' not in st.session_state:
#         st.session_state.resources_map = {}
#     if 'start_date' not in st.session_state:
#         st.session_state.start_date = None
#     if 'duration_weeks' not in st.session_state:
#         st.session_state.duration_weeks = None
#     if 'sessions_per_week' not in st.session_state:
#         st.session_state.sessions_per_week = None
    

#     # Initial Course Creation Form
#     if not st.session_state.course_plan:
#         with st.form("initial_course_form"):
#             col1, col2 = st.columns(2)
#             with col1:
#                 course_name = st.text_input("Course Name", placeholder="e.g., Introduction to Computer Science")
#                 faculty_info = st.text_input("Faculty", value=faculty_name, disabled=True)
#                 sessions_per_week = st.number_input("Sessions Per Week", min_value=1, max_value=5, value=2)
#             with col2:
#                 duration_weeks = st.number_input("Duration (weeks)", min_value=1, max_value=16, value=12)
#                 start_date = st.date_input("Start Date")
            
#             generate_button = st.form_submit_button("Generate Course Structure", use_container_width=True)
            
#             if generate_button and course_name:
#                 with st.spinner("Generating course structure and resources..."):
#                     try:
#                         # Generate course plan with resources
#                         course_plan = generate_perplexity_response(
#                             PERPLEXITY_API_KEY, 
#                             course_name, 
#                             duration_weeks,
#                             sessions_per_week
#                         )
#                         try:
#                             course_plan_json = json.loads(course_plan)
#                             validate_course_plan(course_plan_json)
#                             st.session_state.course_plan = course_plan_json
#                         except (json.JSONDecodeError, ValueError) as e:
#                             st.error(f"Error in course plan structure: {e}")
#                             return
#                         st.session_state.start_date = start_date
#                         st.session_state.duration_weeks = duration_weeks
#                         st.session_state.sessions_per_week = sessions_per_week
                        
#                         # Generate resources for all sessions
#                         session_titles = []
#                         for module in st.session_state.course_plan['modules']:
#                             for sub_module in module['sub_modules']:
#                                 for topic in sub_module['topics']:
#                                     # session_titles.append(topic['title'])
#                                     # session_titles.append(topic)
#                                     if isinstance(topic, dict):
#                                         session_titles.append(topic['title'])
#                                     else:
#                                         session_titles.append(topic)
#                         # In generate_session_resources function, add validation:
#                         if not session_titles:
#                             return json.dumps({"session_resources": []})
#                         resources_response = generate_session_resources(PERPLEXITY_API_KEY, session_titles)
#                         without_backticks = remove_json_backticks(resources_response)
#                         resources = json.loads(without_backticks)
#                         st.session_state.resources_map = {
#                             resource['session_title']: resource['resources']
#                             for resource in resources['session_resources']
#                         }
#                         # Add error handling for the resources map
#                         # if st.session_state.resources_map is None:
#                         #     st.session_state.resources_map = {}

#                         st.rerun()
#                     except Exception as e:
#                         st.error(f"Error generating course structure: {e}")
    
#     # Display and Edit Generated Course Content
#     if st.session_state.course_plan:
#         with st.expander("Course Overview", expanded=True):
#             if not st.session_state.edit_mode:
#                 st.subheader(st.session_state.course_plan['course_title'])
#                 st.write(st.session_state.course_plan['course_description'])
#                 col1, col2, col3 = st.columns(3)
#                 with col1:
#                     st.write(f"**Start Date:** {st.session_state.start_date}")
#                 with col2:
#                     st.write(f"**Duration (weeks):** {st.session_state.duration_weeks}")
#                 with col3:
#                     st.write(f"**Sessions Per Week:** {st.session_state.sessions_per_week}")

#                 edit_button = st.button("Edit Course Details", use_container_width=True)
#                 if edit_button:
#                     st.session_state.edit_mode = True
#                     st.rerun()
#             else:
#                 with st.form("edit_course_details"):
#                     st.session_state.course_plan['course_title'] = st.text_input(
#                         "Course Title", 
#                         value=st.session_state.course_plan['course_title']
#                     )
#                     st.session_state.course_plan['course_description'] = st.text_area(
#                         "Course Description", 
#                         value=st.session_state.course_plan['course_description']
#                     )
#                     if st.form_submit_button("Save Course Details"):
#                         st.session_state.edit_mode = False
#                         st.rerun()
        
#         # Display Modules and Sessions
#         st.subheader("Course Modules and Sessions")
        
#         start_date = st.session_state.start_date
#         current_date = start_date
        
#         all_sessions = []
#         for module_idx, module in enumerate(st.session_state.course_plan['modules']):
#             with st.expander(f"πŸ“š Module {module_idx + 1}: {module['module_title']}", expanded=True):
#                 # Edit module title
#                 new_module_title = st.text_input(
#                     f"Edit Module Title",
#                     value=module['module_title'],
#                     key=f"module_{module_idx}"
#                 )
#                 module['module_title'] = new_module_title
                
#                 for sub_idx, sub_module in enumerate(module['sub_modules']):
#                     st.markdown("<br>", unsafe_allow_html=True)  # Add gap between sessions
#                     # st.markdown(f"### πŸ“– {sub_module['title']}")
#                     st.markdown(f'<h3 style="font-size: 1.25rem;">πŸ“– Chapter {sub_idx + 1}: {sub_module["title"]}</h3>', unsafe_allow_html=True)
#                     # Possible fix: 
#                     # Inside the loop where topics are being processed:

#                     for topic_idx, topic in enumerate(sub_module['topics']):
#                         st.markdown("<br>", unsafe_allow_html=True)  # Add gap between sessions
#                         session_key = f"session_{module_idx}_{sub_idx}_{topic_idx}"
                        
#                         # Get topic title based on type
#                         if isinstance(topic, dict):
#                             current_topic_title = topic.get('title', '')
#                             current_topic_display = current_topic_title
#                         else:
#                             current_topic_title = str(topic)
#                             current_topic_display = current_topic_title

#                         with st.container():
#                             # Session Details
#                             col1, col2, col3 = st.columns([3, 2, 1])
#                             with col1:
#                                 new_topic = st.text_input(
#                                     f"Session {topic_idx + 1} Title",
#                                     value=current_topic_display,
#                                     key=f"{session_key}_topic"
#                                 )
#                                 # Update the topic in the data structure
#                                 if isinstance(topic, dict):
#                                     topic['title'] = new_topic
#                                 else:
#                                     sub_module['topics'][topic_idx] = new_topic
                            
#                             with col2:
#                                 session_date = st.date_input(
#                                     "Session Date",
#                                     value=current_date,
#                                     key=f"{session_key}_date"
#                                 )
                            
#                             with col3:
#                                 session_status = st.selectbox(
#                                     "Status",
#                                     options=["upcoming", "in-progress", "completed"],
#                                     key=f"{session_key}_status"
#                                 )
                            
#                             # Display Resources
#                             if st.session_state.resources_map:
#                                 # Try both the full topic title and the display title
#                                 resources = None
#                                 if isinstance(topic, dict) and topic.get('title') in st.session_state.resources_map:
#                                     resources = st.session_state.resources_map[topic['title']]
#                                 elif current_topic_title in st.session_state.resources_map:
#                                     resources = st.session_state.resources_map[current_topic_title]
                                
#                                 if resources:
#                                     with st.container():
#                                         # st.markdown("#### πŸ“š Session Resources")
#                                         st.markdown(f'<h4 style="font-size: 1.25rem;">πŸ“š Session Resources</h4>', unsafe_allow_html=True)
#                                         # Readings Tab
#                                         if resources.get('readings'):
#                                             st.markdown(f'<h5 style="font-size: 1.1rem; margin-top: 1rem;">πŸ“– External Resources</h5>', unsafe_allow_html=True)
#                                             col1, col2 = st.columns(2)
#                                             for idx, reading in enumerate(resources['readings']):
#                                                 with col1 if idx % 2 == 0 else col2:
#                                                     st.markdown(f"""
#                                                         - **{reading['title']}**
#                                                         - Type: {reading['type']}
#                                                         - Estimated reading time: {reading['estimated_read_time']}
#                                                         - [Access Resource]({reading['url']})
#                                                     """)
                                        
#                                         # Books Tab and Additional Resources Tab side-by-side
#                                         col1, col2 = st.columns(2)
                                        
#                                         with col1:
#                                             if resources.get('books'):
#                                                 st.markdown(f'<h5 style="font-size: 1.1rem; margin-top: 1rem;">πŸ“š Reference Books</h5>', unsafe_allow_html=True)
#                                                 for book in resources['books']:
#                                                     with st.container():
#                                                         st.markdown(f"""
#                                                             - **{book['title']}**
#                                                             - Author: {book['author']}
#                                                             - ISBN: {book['isbn']}
#                                                             - Chapters: {book['chapters']}
#                                                         """)
                                        
#                                         with col2:
#                                             if resources.get('additional_resources'):
#                                                 st.markdown(f'<h5 style="font-size: 1.1rem; margin-top: 1rem;">πŸ”— Additional Study Resources</h5>', unsafe_allow_html=True)
#                                                 for resource in resources['additional_resources']:
#                                                     with st.container():
#                                                         st.markdown(f"""
#                                                             - **{resource['title']}**
#                                                             - Type: {resource['type']}
#                                                             - Description: {resource['description']}
#                                                             - [Access Resource]({resource['url']})
#                                                         """)
                            
#                             # Create session object
#                             session = {
#                                 "session_id": str(ObjectId()),
#                                 "title": new_topic,
#                                 "date": datetime.combine(session_date, datetime.min.time()),
#                                 "status": session_status,
#                                 "module_name": module['module_title'],
#                                 "created_at": datetime.utcnow(),
#                                 "pre_class": {
#                                     "resources": [],
#                                     "completion_required": True
#                                 },
#                                 "in_class": {
#                                     "quiz": [],
#                                     "polls": []
#                                 },
#                                 "post_class": {
#                                     "assignments": []
#                                 },
#                                 "external_resources": st.session_state.resources_map.get(current_topic_title, {})
#                             }
#                             all_sessions.append(session)
#                             current_date = session_date + timedelta(days=7)
                        

#         new_course_id = get_new_course_id()
#         course_title = st.session_state.course_plan['course_title']

#         # Final Save Button
#     if st.button("Save Course", type="primary", use_container_width=True):
#         try:
#             course_doc = {
#                 "course_id": new_course_id,
#                 "title": course_title,
#                 "description": st.session_state.course_plan['course_description'],
#                 "faculty": faculty_name,
#                 "faculty_id": faculty_id,
#                 "duration": f"{st.session_state.duration_weeks} weeks",
#                 "sessions_per_week": st.session_state.sessions_per_week,
#                 "start_date": datetime.combine(st.session_state.start_date, datetime.min.time()),
#                 "created_at": datetime.utcnow(),
#                 "sessions": all_sessions
#             }
            
#             # Insert into database
#             courses_collection.insert_one(course_doc)
#             st.success("Course successfully created!")

#             # Update faculty collection
#             faculty_collection.update_one(
#                 {"_id": st.session_state.user_id},
#                 {
#                     "$push": {
#                         "courses_taught": {
#                             "course_id": new_course_id,
#                             "title": course_title,
#                         }
#                     }
#                 }
#             )

#             # Clear session state
#             st.session_state.course_plan = None
#             st.session_state.edit_mode = False
#             st.session_state.resources_map = {}
            
#             # Optional: Add a button to view the created course
#             if st.button("View Course"):
#                 # Add navigation logic here
#                 pass
            
#         except Exception as e:
#             st.error(f"Error saving course: {e}")


def create_course_form(faculty_name, faculty_id):
    """Display enhanced form to create a new course with AI-generated content and faculty validation"""
    
    st.title("Create New Course - Outcome Based Approach")
    
    # Initialize session states
    if 'current_step' not in st.session_state:
        st.session_state.current_step = 1
    if 'course_details' not in st.session_state:
        st.session_state.course_details = None
    if 'course_outcomes' not in st.session_state:
        st.session_state.course_outcomes = None
    if 'module_outcomes' not in st.session_state:
        st.session_state.module_outcomes = None
    if 'submodule_outcomes' not in st.session_state:
        st.session_state.submodule_outcomes = None

    # Step 1: Initial Course Details
    if st.session_state.current_step == 1:
        st.subheader("Step 1: Course Details")
        with st.form("initial_course_form"):
            col1, col2 = st.columns(2)
            with col1:
                course_name = st.text_input("Course Name", placeholder="e.g., Introduction to Computer Science")
                faculty_info = st.text_input("Faculty", value=faculty_name, disabled=True)
                sessions_per_week = st.number_input("Sessions Per Week", min_value=1, max_value=5, value=2)
            with col2:
                duration_weeks = st.number_input("Duration (weeks)", min_value=1, max_value=16, value=12)
                start_date = st.date_input("Start Date")
            
            if st.form_submit_button("Generate Course Outcomes", use_container_width=True):
                if course_name:
                    with st.spinner("Generating course outcomes..."):
                        try:
                            # Store course details
                            st.session_state.course_details = {
                                "name": course_name,
                                "faculty": faculty_name,
                                "duration": duration_weeks,
                                "sessions_per_week": sessions_per_week,
                                "start_date": start_date
                            }
                            
                            # Generate course outcomes
                            outcomes = generate_course_outcomes(
                                GEMINI_API_KEY,
                                course_name,
                                duration_weeks,
                                sessions_per_week
                            )
                            st.session_state.course_outcomes = json.loads(outcomes)
                            st.session_state.current_step = 2
                            st.rerun()
                        except Exception as e:
                            st.error(f"Error generating course outcomes: {e}")
                else:
                    st.error("Please enter a course name")

    # Step 2: Course Outcomes Validation
    elif st.session_state.current_step == 2:
        st.subheader("Step 2: Course Learning Outcomes (CLOs)")
        
        with st.expander("Course Details", expanded=True):
            col1, col2, col3 = st.columns(3)
            with col1:
                st.write(f"**Course:** {st.session_state.course_details['name']}")
            with col2:
                st.write(f"**Duration:** {st.session_state.course_details['duration']} weeks")
            with col3:
                st.write(f"**Sessions/Week:** {st.session_state.course_details['sessions_per_week']}")
        
        st.write("Please review and validate the generated course outcomes:")
        
        # Display and edit course description
        st.text_area(
            "Course Description",
            value=st.session_state.course_outcomes['course_description'],
            key="course_description",
            height=100
        )
        
        st.markdown("### Course Learning Outcomes")
        
        # Display existing outcomes with edit/delete capabilities
        outcomes = st.session_state.course_outcomes['learning_outcomes']
        for i, outcome in enumerate(outcomes):
            col1, col2, col3 = st.columns([6, 2, 1])
            with col1:
                outcomes[i]['outcome_description'] = st.text_area(
                    f"CO{i+1}",
                    value=outcome['outcome_description'],
                    key=f"co_{i}",
                    height=100
                )
            with col2:
                outcomes[i]['aligned_blooms_taxonomy_level'] = st.selectbox(
                    "Bloom's Level",
                    ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                    index=["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"].index(outcome['aligned_blooms_taxonomy_level']),
                    key=f"bloom_{i}"
                )
            with col3:
                if st.button("πŸ—‘οΈ", key=f"delete_co_{i}"):
                    outcomes.pop(i)
                    st.rerun()
        
        # Add new outcome
        st.markdown("### Add New Outcome")
        with st.form("add_outcome"):
            new_outcome = st.text_area("Outcome Description", placeholder="Enter new course outcome...")
            col1, col2 = st.columns([2, 1])
            with col1:
                bloom_level = st.selectbox(
                    "Bloom's Taxonomy Level",
                    ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"]
                )
            with col2:
                if st.form_submit_button("Add Outcome", use_container_width=True):
                    if new_outcome:
                        outcomes.append({
                            "outcome_number": f"CO{len(outcomes)+1}",
                            "outcome_description": new_outcome,
                            "aligned_blooms_taxonomy_level": bloom_level
                        })
                        st.rerun()
        
        col1, col2 = st.columns(2)
        with col1:
            if st.button("⬅️ Back to Course Details", use_container_width=True):
                st.session_state.current_step = 1
                st.rerun()
        with col2:
            if st.button("Generate Module Outcomes ➑️", use_container_width=True):
                with st.spinner("Generating module outcomes..."):
                    try:
                        module_outcomes = generate_module_outcomes(
                            st.session_state.course_details['name'],
                            json.dumps(st.session_state.course_outcomes),
                            st.session_state.course_details['duration'],
                            st.session_state.course_details['sessions_per_week']
                        )
                        st.session_state.module_outcomes = json.loads(module_outcomes)
                        st.session_state.current_step = 3
                        st.rerun()
                    except Exception as e:
                        st.error(f"Error generating module outcomes: {e}")

    # Step 3: Module Outcomes Validation
    elif st.session_state.current_step == 3:
        st.subheader("Step 3: Module Learning Outcomes (MLOs)")
        
        modules = st.session_state.module_outcomes['modules']
        
        for module_idx, module in enumerate(modules):
            with st.expander(f"Module {module_idx + 1}: {module['module_title']}", expanded=True):
                # Edit module title and duration
                col1, col2 = st.columns([3, 1])
                with col1:
                    module['module_title'] = st.text_input(
                        "Module Title",
                        value=module['module_title'],
                        key=f"module_title_{module_idx}"
                    )
                with col2:
                    module['module_duration_sessions'] = st.number_input(
                        "Sessions",
                        min_value=1,
                        value=module['module_duration_sessions'],
                        key=f"module_duration_{module_idx}"
                    )
                
                # Display and edit module outcomes
                st.markdown("#### Module Learning Outcomes")
                for outcome_idx, outcome in enumerate(module['module_learning_outcomes']):
                    col1, col2, col3 = st.columns([6, 2, 1])
                    with col1:
                        outcome['outcome_description'] = st.text_area(
                            f"MLO{module_idx+1}.{outcome_idx+1}",
                            value=outcome['outcome_description'],
                            key=f"mlo_{module_idx}_{outcome_idx}",
                            height=100
                        )
                    with col2:
                        outcome['aligned_blooms_taxonomy_level'] = st.selectbox(
                            "Bloom's Level",
                            ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                            index=["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"].index(outcome['aligned_blooms_taxonomy_level']),
                            key=f"module_bloom_{module_idx}_{outcome_idx}"
                        )
                    with col3:
                        if st.button("πŸ—‘οΈ", key=f"delete_mlo_{module_idx}_{outcome_idx}"):
                            module['module_learning_outcomes'].pop(outcome_idx)
                            st.rerun()
                
                # Add new module outcome
                with st.form(f"add_module_outcome_{module_idx}"):
                    new_outcome = st.text_area("New Module Outcome", placeholder="Enter new module outcome...")
                    col1, col2 = st.columns([2, 1])
                    with col1:
                        bloom_level = st.selectbox(
                            "Bloom's Taxonomy Level",
                            ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                            key=f"new_module_bloom_{module_idx}"
                        )
                    with col2:
                        if st.form_submit_button("Add Outcome", use_container_width=True):
                            if new_outcome:
                                module['module_learning_outcomes'].append({
                                    "outcome_number": f"MLO{module_idx+1}.{len(module['module_learning_outcomes'])+1}",
                                    "outcome_description": new_outcome,
                                    "aligned_blooms_taxonomy_level": bloom_level
                                })
                                st.rerun()
        
        col1, col2 = st.columns(2)
        with col1:
            if st.button("⬅️ Back to Course Outcomes", use_container_width=True):
                st.session_state.current_step = 2
                st.rerun()
        with col2:
            if st.button("Generate Submodule Outcomes ➑️", use_container_width=True):
                with st.spinner("Generating submodule outcomes..."):
                    try:
                        submodule_outcomes = generate_submodule_outcomes(
                            st.session_state.course_details['name'],
                            json.dumps(st.session_state.course_outcomes),
                            json.dumps(st.session_state.module_outcomes),
                            st.session_state.course_details['duration'],
                            st.session_state.course_details['sessions_per_week']
                        )
                        st.session_state.submodule_outcomes = json.loads(submodule_outcomes)
                        st.session_state.current_step = 4
                        st.rerun()
                    except Exception as e:
                        st.error(f"Error generating submodule outcomes: {e}")

    # Step 4: Submodule Outcomes Validation
    elif st.session_state.current_step == 4:
        st.subheader("Step 4: Submodule Learning Outcomes (SMLOs)")
        
        try:
            submodule_outcomes = st.session_state.get('submodule_outcomes', None)
            if submodule_outcomes is None:
                st.error("Submodule outcomes are not set in the session state.")
            elif 'modules' not in submodule_outcomes:
                st.error("The 'modules' key is missing in submodule outcomes.")
            else: 
                print("No problem here")
        except Exception as e:
            st.error(f"Error accessing submodule outcomes: {e}")
        
        for module_idx, module in enumerate(st.session_state.module_outcomes['modules']):
            st.markdown(f"### Module {module_idx + 1}: {module['module_title']}")
            
            if module_idx < len(st.session_state.submodule_outcomes['modules']):
                for submodule_idx, submodule in enumerate(st.session_state.submodule_outcomes['modules'][module_idx]['submodules']):
                    with st.expander(f"Submodule {module_idx + 1}.{submodule_idx + 1}: {submodule['submodule_title']}", expanded=True):
                        # Edit submodule title and duration
                        col1, col2 = st.columns([3, 1])
                        with col1:
                            submodule['submodule_title'] = st.text_input(
                                "Submodule Title",
                                value=submodule['submodule_title'],
                                key=f"submodule_title_{module_idx}_{submodule_idx}"
                            )
                        with col2:
                            submodule['submodule_duration_sessions'] = st.number_input(
                                "Sessions",
                                min_value=1,
                                value=submodule['submodule_duration_sessions'],
                                key=f"submodule_duration_{module_idx}_{submodule_idx}"
                            )
                        
                        # Display and edit submodule outcomes
                        st.markdown("#### Submodule Learning Outcomes")
                        for outcome_idx, outcome in enumerate(submodule['submodule_learning_outcomes']):
                            col1, col2, col3 = st.columns([6, 2, 1])
                            with col1:
                                outcome['outcome_description'] = st.text_area(
                                    f"SMLO{module_idx+1}.{submodule_idx+1}.{outcome_idx+1}",
                                    value=outcome['outcome_description'],
                                    key=f"smlo_{module_idx}_{submodule_idx}_{outcome_idx}",
                                    height=100
                                )
                            with col2:
                                outcome['aligned_blooms_taxonomy_level'] = st.selectbox(
                                    "Bloom's Level",
                                    ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                                    index=["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"].index(outcome['aligned_blooms_taxonomy_level']),
                                    key=f"submodule_bloom_{module_idx}_{submodule_idx}_{outcome_idx}"
                                )
                            with col3:
                                if st.button("πŸ—‘οΈ", key=f"delete_smlo_{module_idx}_{submodule_idx}_{outcome_idx}"):
                                    submodule['submodule_learning_outcomes'].pop(outcome_idx)
                                    st.rerun()
                        
                        # Add new submodule outcome
                        with st.form(f"add_submodule_outcome_{module_idx}_{submodule_idx}"):
                            new_outcome = st.text_area("New Submodule Outcome", placeholder="Enter new submodule outcome...")
                            col1, col2 = st.columns([2, 1])
                            with col1:
                                bloom_level = st.selectbox(
                                    "Bloom's Taxonomy Level",
                                    ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                                    key=f"new_submodule_bloom_{module_idx}_{submodule_idx}"
                                )
                            with col2:
                                if st.form_submit_button("Add Outcome", use_container_width=True):
                                    if new_outcome:
                                        submodule['submodule_learning_outcomes'].append({
                                            "outcome_number": f"SMLO{module_idx+1}.{submodule_idx+1}.{len(submodule['submodule_learning_outcomes'])+1}",
                                            "outcome_description": new_outcome,
                                            "aligned_blooms_taxonomy_level": bloom_level
                                        })
                                        st.rerun()

                                    # Navigation buttons
        col1, col2 = st.columns(2)
        with col1:
            if st.button("⬅️ Back to Module Outcomes", use_container_width=True):
                st.session_state.current_step = 3
                st.rerun()
        with col2:
            if st.button("Proceed to Sessions Generation ➑️", use_container_width=True):
                # Validate total sessions distribution
                total_sessions = st.session_state.course_details['duration'] * st.session_state.course_details['sessions_per_week']
                # current_sessions = sum(
                #     sum(submodule['submodule_duration_sessions'] 
                #         for submodule in module['submodules'])
                #     for module in st.session_state.module_outcomes['modules']
                # )
                current_sessions = sum(
                sum(submodule['submodule_duration_sessions'] 
                    for submodule in st.session_state.submodule_outcomes['modules'][module_idx]['submodules'])
                for module_idx in range(len(st.session_state.submodule_outcomes['modules'])))
                
                if current_sessions != total_sessions:
                    st.error(f"""

                        Session distribution mismatch! 

                        Total available sessions: {total_sessions}

                        Currently allocated sessions: {current_sessions}

                        Please adjust the session distribution in modules and submodules.

                    """)
                else:
                    try:
                        # Merge all outcomes into final structure
                        final_course_structure = {
                            "course_title": st.session_state.course_outcomes['course_title'],
                            "course_description": st.session_state.course_outcomes['course_description'],
                            "learning_outcomes": st.session_state.course_outcomes['learning_outcomes'],
                            "modules": st.session_state.module_outcomes['modules']
                        }
                        
                        # Store in session state for next step
                        st.session_state.final_course_structure = final_course_structure
                        st.session_state.current_step = 5  # Move to resources generation
                        st.rerun()
                    except Exception as e:
                        st.error(f"Error finalizing course structure: {e}")

        # Add helper text about session distribution
        total_sessions = st.session_state.course_details['duration'] * st.session_state.course_details['sessions_per_week']
        # current_sessions = sum(
        #     sum(submodule['submodule_duration_sessions'] 
        #         for submodule in module['submodules'])
        #     for module in st.session_state.module_outcomes['modules']
        # )
        current_sessions = sum(
            sum(submodule['submodule_duration_sessions'] 
                for submodule in st.session_state.submodule_outcomes['modules'][module_idx]['submodules'])
            for module_idx in range(len(st.session_state.submodule_outcomes['modules'])))
        
        st.info(f"""

            Session Distribution:

            - Total available sessions: {total_sessions}

            - Currently allocated sessions: {current_sessions}

            - Remaining sessions: {total_sessions - current_sessions}

        """)

    # Step 4: Session Outcomes Generation
    elif st.session_state.current_step == 5:
        st.subheader("Step 5: Session Learning Outcomes (SLOs)")
        
        # Calculate total sessions for validation
        total_sessions = st.session_state.course_details['duration'] * st.session_state.course_details['sessions_per_week']
        
        try:
            # Generate session outcomes if not already generated
            if 'session_outcomes' not in st.session_state:
                with st.spinner("Generating session outcomes..."):
                    session_outcomes = generate_session_outcomes(
                        st.session_state.course_details['name'],
                        json.dumps(st.session_state.course_outcomes),
                        json.dumps(st.session_state.module_outcomes),
                        json.dumps(st.session_state.submodule_outcomes),
                        st.session_state.course_details['duration'],
                        st.session_state.course_details['sessions_per_week']
                    )
                    st.session_state.session_outcomes = json.loads(session_outcomes)
            
            # Warning about final edits
            st.warning("""

                ⚠️ **Important Notice**: You cannot edit the Session Details after this step. Please ensure all the Session Details are correct.

            """)
            
            # Display and edit session outcomes for each submodule
            # for module_idx, module in enumerate(st.session_state.submodule_outcomes['modules']):
            #     st.markdown(f"### Module {module_idx + 1}: {module['module_title']}")
                
            #     for submodule_idx, submodule in enumerate(module['submodules']):
            #         with st.expander(f"Submodule {module_idx + 1}.{submodule_idx + 1}: {submodule['submodule_title']}", expanded=True):
            #             st.markdown(f"#### Sessions ({submodule['submodule_duration_sessions']} allocated)")
                        
            #             # Get sessions for this submodule
            #             sessions = st.session_state.session_outcomes['submodules'][submodule_idx]['sessions']
                        
            #             for session_idx, session in enumerate(sessions):
            #                 with st.expander(f"Session {session_idx + 1}: {session['session_title']}", expanded=True):
            #                     # Edit session details
            #                     session['session_title'] = st.text_input(
            #                         "Session Title",
            #                         value=session['session_title'],
            #                         key=f"session_title_{module_idx}_{submodule_idx}_{session_idx}"
            #                     )
                                
            #                     # Prerequisites
            #                     st.markdown("##### Prerequisites")
            #                     prereq_container = st.container()
            #                     for prereq_idx, prereq in enumerate(session['prerequisites']):
            #                         col1, col2 = prereq_container.columns([5, 1])
            #                         with col1:
            #                             session['prerequisites'][prereq_idx] = st.text_input(
            #                                 f"Prerequisite {prereq_idx + 1}",
            #                                 value=prereq,
            #                                 key=f"prereq_{module_idx}_{submodule_idx}_{session_idx}_{prereq_idx}"
            #                             )
            #                         with col2:
            #                             if st.button("πŸ—‘οΈ", key=f"del_prereq_{module_idx}_{submodule_idx}_{session_idx}_{prereq_idx}"):
            #                                 session['prerequisites'].pop(prereq_idx)
            #                                 st.rerun()
                                
            #                     if st.button("Add Prerequisite", key=f"add_prereq_{module_idx}_{submodule_idx}_{session_idx}"):
            #                         session['prerequisites'].append("")
            #                         st.rerun()
                                
            #                     # Key Concepts
            #                     st.markdown("##### Key Concepts")
            #                     concept_container = st.container()
            #                     for concept_idx, concept in enumerate(session['key_concepts']):
            #                         col1, col2 = concept_container.columns([5, 1])
            #                         with col1:
            #                             session['key_concepts'][concept_idx] = st.text_input(
            #                                 f"Concept {concept_idx + 1}",
            #                                 value=concept,
            #                                 key=f"concept_{module_idx}_{submodule_idx}_{session_idx}_{concept_idx}"
            #                             )
            #                         with col2:
            #                             if st.button("πŸ—‘οΈ", key=f"del_concept_{module_idx}_{submodule_idx}_{session_idx}_{concept_idx}"):
            #                                 session['key_concepts'].pop(concept_idx)
            #                                 st.rerun()
                                
            #                     if st.button("Add Concept", key=f"add_concept_{module_idx}_{submodule_idx}_{session_idx}"):
            #                         session['key_concepts'].append("")
            #                         st.rerun()
                                
            #                     # Session Learning Outcomes
            #                     st.markdown("##### Session Learning Outcomes")
            #                     for outcome_idx, outcome in enumerate(session['session_learning_outcomes']):
            #                         col1, col2, col3, col4 = st.columns([4, 2, 2, 1])
            #                         with col1:
            #                             outcome['outcome_description'] = st.text_area(
            #                                 f"SLO{session_idx+1}.{outcome_idx+1}",
            #                                 value=outcome['outcome_description'],
            #                                 key=f"slo_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}",
            #                                 height=100
            #                             )
            #                         with col2:
            #                             outcome['bloom_taxonomy_level'] = st.selectbox(
            #                                 "Bloom's Level",
            #                                 ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
            #                                 index=["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"].index(outcome['bloom_taxonomy_level']),
            #                                 key=f"slo_bloom_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"
            #                             )
            #                         with col3:
            #                             outcome['aligned_smlo'] = st.selectbox(
            #                                 "Aligned SMLO",
            #                                 [f"SMLO{module_idx+1}.{submodule_idx+1}.{i+1}" for i in range(len(submodule['submodule_learning_outcomes']))],
            #                                 index=0,
            #                                 key=f"slo_align_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"
            #                             )
            #                         with col4:
            #                             if st.button("πŸ—‘οΈ", key=f"del_slo_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"):
            #                                 session['session_learning_outcomes'].pop(outcome_idx)
            #                                 st.rerun()
                                
            #                     # Add new session outcome
            #                     with st.form(f"add_session_outcome_{module_idx}_{submodule_idx}_{session_idx}"):
            #                         new_outcome = st.text_area("New Session Outcome", placeholder="Enter new session outcome...")
            #                         col1, col2, col3 = st.columns([2, 2, 1])
            #                         with col1:
            #                             bloom_level = st.selectbox(
            #                                 "Bloom's Level",
            #                                 ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
            #                                 key=f"new_slo_bloom_{module_idx}_{submodule_idx}_{session_idx}"
            #                             )
            #                         with col2:
            #                             aligned_smlo = st.selectbox(
            #                                 "Aligned SMLO",
            #                                 [f"SMLO{module_idx+1}.{submodule_idx+1}.{i+1}" for i in range(len(submodule['submodule_learning_outcomes']))],
            #                                 key=f"new_slo_align_{module_idx}_{submodule_idx}_{session_idx}"
            #                             )
            #                         with col3:
            #                             if st.form_submit_button("Add Outcome"):
            #                                 if new_outcome:
            #                                     session['session_learning_outcomes'].append({
            #                                         "outcome_number": f"SLO{session_idx+1}.{len(session['session_learning_outcomes'])+1}",
            #                                         "outcome_description": new_outcome,
            #                                         "bloom_taxonomy_level": bloom_level,
            #                                         "aligned_smlo": aligned_smlo
            #                                     })
            #                                     st.rerun()
            
            for module_idx, module in enumerate(st.session_state.module_outcomes['modules']):
                st.markdown(f"### Module {module_idx + 1}: {module['module_title']}")
            
                # Ensure the module index exists in submodule_outcomes
                if module_idx < len(st.session_state.submodule_outcomes['modules']):
                    for submodule_idx, submodule in enumerate(st.session_state.submodule_outcomes['modules'][module_idx]['submodules']):
                        with st.container():
                            st.markdown(f"#### Submodule {module_idx + 1}.{submodule_idx + 1}: {submodule['submodule_title']}")
                            st.markdown(f"**Sessions ({submodule['submodule_duration_sessions']} allocated)**")
                            
                            # Get sessions for this submodule
                            sessions = st.session_state.session_outcomes['submodules'][submodule_idx]['sessions']
                            
                            for session_idx, session in enumerate(sessions):
                                with st.container():
                                    st.markdown(f"**Session {session_idx + 1}: {session['session_title']}**")
                                    
                                    # Edit session details
                                    session['session_title'] = st.text_input(
                                        "Session Title",
                                        value=session['session_title'],
                                        key=f"session_title_{module_idx}_{submodule_idx}_{session_idx}"
                                    )
                                    
                                    # Prerequisites
                                    st.markdown("##### Prerequisites")
                                    prereq_container = st.container()
                                    for prereq_idx, prereq in enumerate(session['prerequisites']):
                                        col1, col2 = prereq_container.columns([5, 1])
                                        with col1:
                                            session['prerequisites'][prereq_idx] = st.text_input(
                                                f"Prerequisite {prereq_idx + 1}",
                                                value=prereq,
                                                key=f"prereq_{module_idx}_{submodule_idx}_{session_idx}_{prereq_idx}"
                                            )
                                        with col2:
                                            if st.button("πŸ—‘οΈ", key=f"del_prereq_{module_idx}_{submodule_idx}_{session_idx}_{prereq_idx}"):
                                                session['prerequisites'].pop(prereq_idx)
                                                st.rerun()
                                    
                                    if st.button("Add Prerequisite", key=f"add_prereq_{module_idx}_{submodule_idx}_{session_idx}"):
                                        session['prerequisites'].append("")
                                        st.rerun()
                                    
                                    # Key Concepts
                                    st.markdown("##### Key Concepts")
                                    concept_container = st.container()
                                    for concept_idx, concept in enumerate(session['key_concepts']):
                                        col1, col2 = concept_container.columns([5, 1])
                                        with col1:
                                            session['key_concepts'][concept_idx] = st.text_input(
                                                f"Concept {concept_idx + 1}",
                                                value=concept,
                                                key=f"concept_{module_idx}_{submodule_idx}_{session_idx}_{concept_idx}"
                                            )
                                        with col2:
                                            if st.button("πŸ—‘οΈ", key=f"del_concept_{module_idx}_{submodule_idx}_{session_idx}_{concept_idx}"):
                                                session['key_concepts'].pop(concept_idx)
                                                st.rerun()
                                    
                                    if st.button("Add Concept", key=f"add_concept_{module_idx}_{submodule_idx}_{session_idx}"):
                                        session['key_concepts'].append("")
                                        st.rerun()
                                    
                                    # Session Learning Outcomes
                                    st.markdown("##### Session Learning Outcomes")
                                    for outcome_idx, outcome in enumerate(session['session_learning_outcomes']):
                                        col1, col2, col3, col4 = st.columns([4, 2, 2, 1])
                                        with col1:
                                            outcome['outcome_description'] = st.text_area(
                                                f"SLO{session_idx+1}.{outcome_idx+1}",
                                                value=outcome['outcome_description'],
                                                key=f"slo_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}",
                                                height=100
                                            )
                                        with col2:
                                            outcome['bloom_taxonomy_level'] = st.selectbox(
                                                "Bloom's Level",
                                                ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                                                index=["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"].index(outcome['bloom_taxonomy_level']),
                                                key=f"slo_bloom_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"
                                            )
                                        with col3:
                                            outcome['aligned_smlo'] = st.selectbox(
                                                "Aligned SMLO",
                                                [f"SMLO{module_idx+1}.{submodule_idx+1}.{i+1}" for i in range(len(submodule['submodule_learning_outcomes']))],
                                                index=0,
                                                key=f"slo_align_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"
                                            )
                                        with col4:
                                            if st.button("πŸ—‘οΈ", key=f"del_slo_{module_idx}_{submodule_idx}_{session_idx}_{outcome_idx}"):
                                                session['session_learning_outcomes'].pop(outcome_idx)
                                                st.rerun()
                                    
                                    # Add new session outcome
                                    with st.form(f"add_session_outcome_{module_idx}_{submodule_idx}_{session_idx}"):
                                        new_outcome = st.text_area("New Session Outcome", placeholder="Enter new session outcome...")
                                        col1, col2, col3 = st.columns([2, 2, 1])
                                        with col1:
                                            bloom_level = st.selectbox(
                                                "Bloom's Level",
                                                ["Remember", "Understand", "Apply", "Analyze", "Evaluate", "Create"],
                                                key=f"new_slo_bloom_{module_idx}_{submodule_idx}_{session_idx}"
                                            )
                                        with col2:
                                            aligned_smlo = st.selectbox(
                                                "Aligned SMLO",
                                                [f"SMLO{module_idx+1}.{submodule_idx+1}.{i+1}" for i in range(len(submodule['submodule_learning_outcomes']))],
                                                key=f"new_slo_align_{module_idx}_{submodule_idx}_{session_idx}"
                                            )
                                        with col3:
                                            if st.form_submit_button("Add Outcome"):
                                                if new_outcome:
                                                    session['session_learning_outcomes'].append({
                                                        "outcome_number": f"SLO{session_idx+1}.{len(session['session_learning_outcomes'])+1}",
                                                        "outcome_description": new_outcome,
                                                        "bloom_taxonomy_level": bloom_level,
                                                        "aligned_smlo": aligned_smlo
                                                    })
                                                    st.rerun()

            # Navigation buttons
            col1, col2 = st.columns(2)
            with col1:
                if st.button("⬅️ Back to Submodule Outcomes", use_container_width=True):
                    st.session_state.current_step = 3
                    st.rerun()
            with col2:
                if st.button("Generate Session Resources ➑️", use_container_width=True):
                    # Merge all structures before moving to resources
                    final_structure = merge_course_structure(
                        st.session_state.course_outcomes,
                        st.session_state.module_outcomes,
                        st.session_state.submodule_outcomes,
                        st.session_state.session_outcomes
                    )
                    st.session_state.final_structure = final_structure
                    st.session_state.current_step = 6
                    st.rerun()

        except Exception as e:
            st.error(f"Error accessing session outcomes: {e}")
    # Step 5: Resources Generation and Final Save
    elif st.session_state.current_step == 6:
        st.subheader("Step 5: Course Resources")
        
        try:
            if 'generated_resources' not in st.session_state:
                with st.spinner("Generating course resources..."):
                    # Extract all session titles
                    session_titles = []
                    for module in st.session_state.final_structure['modules']:
                        for submodule in module['submodules']:
                            for session in submodule['sessions']:
                                session_titles.append(session['session_title'])
                    
                    resources = generate_resources_by_titles_chunking(session_titles, st.session_state.final_structure['course_title'])
                    # Load sample resources from JSON file: 
                    # with open("sample_files/session_resources.json", "r") as file:
                    #     resources = json.load(file)
                    
                    # Debug print
                    st.write("Type of resources:", type(resources))
                    st.write("Resources content:", resources)

                    st.session_state.generated_resources = resources
            
            # Display Course Reference Books
            st.markdown("### πŸ“š Course Reference Books")
            for book in st.session_state.generated_resources['course_reference_books']:
                with st.container():
                    st.markdown(f"""

                        **{book['title']}**  

                        *by {book['author']}*  

                        Publisher: {book['publisher']}, {book['year']}  

                        {book['description']}

                    """)
            
            # Display Session Resources
            st.markdown("### πŸ“– Session Resources")
            for session_resource in st.session_state.generated_resources['session_resources']:
                with st.expander(f"Session: {session_resource['session_title']}", expanded=False):
                    # Readings
                    readings = session_resource['resources'].get('readings', [])
                    videos = session_resource['resources'].get('videos', [])

                    # Separate readings and videos
                    filtered_readings = []
                    for reading in readings:
                        if reading['type'].lower() == 'video':
                            videos.append(reading)
                        else:
                            filtered_readings.append(reading)

                    # Display filtered readings
                    if filtered_readings:
                        st.markdown("#### πŸ“š Required Readings")
                        for reading in filtered_readings:
                            st.markdown(f"""

                                - **{reading['title']}**

                                - Type: {reading['type']}

                                - Estimated reading time: {reading['estimated_read_time']}

                                - [Access Resource]({reading['url']})

                            """)

                    # Display videos
                    if videos:
                        st.markdown("#### πŸŽ₯ Video Resources")
                        for video in videos:
                            st.markdown(f"""

                                - **{video['title']}**

                                - Type: {video['type']}

                                - Duration: {video.get('duration', 'N/A')}

                                - [Watch Video]({video['url']})

                            """)

            all_sessions = []
            start_date = st.session_state.course_details['start_date']
            sessions_per_week = st.session_state.course_details['sessions_per_week']
            for module in st.session_state.final_structure['modules']:
                for submodule in module['submodules']:
                    for session_idx, session in enumerate(submodule['sessions']):
                        days_per_session = 7 / sessions_per_week
                        print(days_per_session)
                        session_date = start_date + timedelta(days=session_idx * days_per_session)
                        # get external resources for this session
                        external_resources = st.session_state.generated_resources['session_resources'][session_idx]['resources']
                        session_datetime = datetime.combine(session_date, datetime.min.time())
                        session_doc = {
                            "session_id": str(ObjectId()),
                            "title": session['session_title'],
                            "session_learning_outcomes": session['session_learning_outcomes'],
                            "date": session_datetime,
                            "status": "Scheduled",
                            "module_name": module['module_title'],
                            "submodule_name": submodule['submodule_title'],
                            "created_at": datetime.utcnow(),
                            "pre_class": {
                                "resources": [],
                                "completion_required": True
                            },
                            "in_class": {
                                "quiz": [],
                                "polls": []
                            },
                            "post_class": {
                                "assignments": []
                            },
                            "external_resources": external_resources
                        }
                        all_sessions.append(session_doc)

            # Display 1st two sessions
            print(all_sessions[:2])

            new_course_id = get_new_course_id()
            course_title = st.session_state.final_structure['course_title']

            # if st.button("Save Course", type="primary", use_container_width=True):
#         try:
#             course_doc = {
#                 "course_id": new_course_id,
#                 "title": course_title,
#                 "description": st.session_state.course_plan['course_description'],
#                 "faculty": faculty_name,
#                 "faculty_id": faculty_id,
#                 "duration": f"{st.session_state.duration_weeks} weeks",
#                 "sessions_per_week": st.session_state.sessions_per_week,
#                 "start_date": datetime.combine(st.session_state.start_date, datetime.min.time()),
#                 "created_at": datetime.utcnow(),
#                 "sessions": all_sessions
#             }
            
#             # Insert into database
#             courses_collection.insert_one(course_doc)
#             st.success("Course successfully created!")

#             # Update faculty collection
#             faculty_collection.update_one(
#                 {"_id": st.session_state.user_id},
#                 {
#                     "$push": {
#                         "courses_taught": {
#                             "course_id": new_course_id,
#                             "title": course_title,
#                         }
#                     }
#                 }
#             )

#             # Clear session state
#             st.session_state.course_plan = None
#             st.session_state.edit_mode = False
#             st.session_state.resources_map = {}
            
#             # Optional: Add a button to view the created course
#             if st.button("View Course"):
#                 # Add navigation logic here
#                 pass
            
#         except Exception as e:
#             st.error(f"Error saving course: {e}")


            # Final Save Button
            if st.button("Save Course", type="primary", use_container_width=True):
                try:
                    # Create final course document
                    course_doc = {
                        "course_id": new_course_id,
                        "title": st.session_state.final_structure['course_title'],
                        "description": st.session_state.final_structure['course_description'],
                        "course_outcomes": st.session_state.final_structure['learning_outcomes'],
                        "faculty": st.session_state.course_details['faculty'],
                        "faculty_id": faculty_id,
                        "duration": f"{st.session_state.course_details['duration']} weeks",
                        "sessions_per_week": st.session_state.course_details['sessions_per_week'],
                        "start_date": datetime.combine(st.session_state.course_details['start_date'], datetime.min.time()),
                        "created_at": datetime.utcnow(),
                        "sessions": all_sessions,
                        "full_course_structure": st.session_state.final_structure
                    }
                    
                    # Insert into database
                    courses_collection.insert_one(course_doc)

                    # Update faculty collection
                    faculty_collection.update_one(
                        {"_id": st.session_state.user_id},
                        {
                            "$push": {
                                "courses_taught": {
                                    "course_id": new_course_id,
                                    "title": course_title,
                                }
                            }
                        }
                    )

                    # Show success message
                    st.success("πŸŽ‰ Course successfully created! You can now access it from your dashboard.")
                    
                    # Clear session state
                    for key in ['course_details', 'course_outcomes', 'module_outcomes', 
                            'submodule_outcomes', 'session_outcomes', 'final_structure', 
                            'generated_resources', 'current_step']:
                        if key in st.session_state:
                            del st.session_state[key]
                    
                except Exception as e:
                    st.error(f"Error saving course: {e}")
            
            # Back button
            if st.button("⬅️ Back to Session Outcomes", use_container_width=True):
                st.session_state.current_step = 4
                st.rerun()
                
        except Exception as e:
            st.error(f"Error in resource generation: {e}")



from research_assistant_dashboard import display_research_assistant_dashboard
from goals2 import display_analyst_dashboard
def enroll_in_course(course_id, course_title, student):
    """Enroll a student in a course"""
    if student:
        courses = student.get("enrolled_courses", [])
        if course_id not in [course["course_id"] for course in courses]:
            course = courses_collection.find_one({"course_id": course_id})
            if course:
                courses.append(
                    {
                        "course_id": course["course_id"],
                        "title": course["title"],
                    }
                )
                students_collection.update_one(
                    {"_id": st.session_state.user_id},
                    {"$set": {"enrolled_courses": courses}},
                )
                st.success(f"Enrolled in course {course_title}")
                # st.experimental_rerun()
            else:
                st.error("Course not found")
        else:
            st.warning("Already enrolled in this course")

# def enroll_in_course_page(course_id):
#     """Enroll a student in a course"""
#     student = students_collection.find_one({"_id": st.session_state.user_id})
#     course_title = courses_collection.find_one({"course_id": course_id})["title"]

#     course = courses_collection.find_one({"course_id": course_id})
#     if course:
#         st.title(course["title"])
#         st.subheader("Course Description:")
#         st.write(course["description"])
#         st.write(f"Faculty: {course['faculty']}")
#         st.write(f"Duration: {course['duration']}")

#         st.title("Course Sessions")
#         for session in course["sessions"]:
#             st.write(f"Session: {session['title']}")
#             st.write(f"Date: {session['date']}")
#             st.write(f"Status: {session['status']}")
#             st.write("----")
#     else:
#         st.error("Course not found")

#     enroll_button = st.button("Enroll in Course", key="enroll_button", use_container_width=True)
#     if enroll_button:
#         enroll_in_course(course_id, course_title, student)
def enroll_in_course_page(course_id):
    """Display an aesthetically pleasing course enrollment page"""
    student = students_collection.find_one({"_id": st.session_state.user_id})
    course = courses_collection.find_one({"course_id": course_id})
    
    if not course:
        st.error("Course not found")
        return
        
    # Create two columns for layout
    col1, col2 = st.columns([2, 1])
    
    with col1:
        # Course header section
        st.title(course["title"])
        st.markdown(f"*{course['description']}*")
        
        # Course details in an expander
        with st.expander("Course Details", expanded=True):
            st.markdown(f"πŸ‘¨β€πŸ« **Faculty:** {course['faculty']}")
            st.markdown(f"⏱️ **Duration:** {course['duration']}")
        
        # Sessions in a clean card-like format
        st.subheader("πŸ“š Course Sessions")
        for idx, session in enumerate(course["sessions"], 1):
            with st.container():
                st.markdown(f"""

                ---

                ### Session {idx}: {session['title']}

                πŸ—“οΈ **Date:** {session['date']}  

                πŸ“Œ **Status:** {session['status']}

                """)
    
    with col2:
        with st.container():
            st.markdown("### Ready to Learn?")
            st.markdown("Click below to enroll in this course")
            
            # Check if already enrolled
            courses = student.get("enrolled_courses", [])
            is_enrolled = course_id in [c["course_id"] for c in courses]
            
            if is_enrolled:
                st.info("βœ… You are already enrolled in this course")
            else:
                enroll_button = st.button(
                    "πŸŽ“ Enroll Now",
                    key="enroll_button",
                    use_container_width=True
                )
                if enroll_button:
                    enroll_in_course(course_id, course["title"], student)

def show_available_courses(username, user_type, user_id):
    """Display available courses for enrollment"""
    st.title("Available Courses")
    
    courses = list(courses_collection.find({}, {"course_id": 1, "title": 1}))
    course_options = [
        f"{course['title']} ({course['course_id']})" for course in courses
    ]
    
    selected_course = st.selectbox("Select a Course to Enroll", course_options)
    # if selected_courses:
    #     for course in selected_courses:
    #         course_id = course.split("(")[-1][:-1]
    #         course_title = course.split(" (")[0]
    #         enroll_in_course(course_id, course_title, user_id)
    #     st.success("Courses enrolled successfully!")
    if selected_course:
        course_id = selected_course.split("(")[-1][:-1]
        enroll_in_course_page(course_id)

def validate_email(email):
    """Validate email format and domain"""
    # Basic email pattern
    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
    if not re.match(pattern, email):
        return False, "Invalid email format"
    
    # You can add additional institution-specific validation here
    # For example, checking if the domain is from your institution
    # allowed_domains = ["spit.ac.in"]  # Add more domains as needed
    # domain = email.split('@')[1]
    # if domain not in allowed_domains:
    #     return False, "Please use your institutional email address"
    
    return True, "Valid email"

def validate_phone(phone):
    """Validate phone number format"""
    # Assuming Indian phone numbers
    pattern = r'^[6-9]\d{9}$'
    if not re.match(pattern, phone):
        return False, "Invalid phone number format. Please enter a 10-digit Indian mobile number"
    return True, "Valid phone number"

def extract_username(email):
    """Extract username from email"""
    return email.split('@')[0]

def main_dashboard():
    if st.session_state.user_type == "research_assistant":
        display_research_assistant_dashboard()
    elif st.session_state.user_type == "analyst":
        display_analyst_dashboard()
    else:
        selected_course_id = None
        create_session = False
        with st.sidebar:
            st.title(f"Welcome, {st.session_state.username}")
            if st.session_state.user_type == "student":
                st.title("Enrolled Courses")
            else:
                st.title("Your Courses")

            # Course selection
            enrolled_courses = get_courses(
                st.session_state.username, st.session_state.user_type
            )

            # Enroll in Courses
            if st.session_state.user_type == "student":
                if st.button(
                    "Enroll in a New Course", key="enroll_course", use_container_width=True
                ):
                    st.session_state.show_enroll_course_page = True
                
            # if st.session_state.show_enroll_course_form: 
            #     courses = list(courses_collection.find({}, {"course_id": 1, "title": 1}))
            #     course_options = [f"{course['title']} ({course['course_id']})" for course in courses]
            #     course_to_enroll = st.selectbox("Available Courses", course_options)
            #     st.session_state.course_to_enroll = course_to_enroll

            if st.session_state.user_type == "faculty":
                if st.button(
                    "Create New Course", key="create_course", use_container_width=True
                ):
                    st.session_state.show_create_course_form = True

            if not enrolled_courses:
                st.warning("No courses found")
            else:
                course_titles = [course["title"] for course in enrolled_courses]
                course_ids = [course["course_id"] for course in enrolled_courses]

                selected_course = st.selectbox("Select Course", course_titles)
                selected_course_id = course_ids[course_titles.index(selected_course)]
                print("Selected Course ID: ", selected_course_id)

                st.session_state.selected_course = selected_course
                st.session_state.selected_course_id = selected_course_id

                # Display course sessions
                sessions = get_sessions(selected_course_id, selected_course)

                st.title("Course Sessions")
                for i, session in enumerate(sessions, start=1):
                    if st.button(
                        f"Session {i}", key=f"session_{i}", use_container_width=True
                    ):
                        st.session_state.selected_session = session

                if st.session_state.user_type == "faculty":
                    # Create new session
                    # create_session =  st.button("Create New Session Button", key="create_session", use_container_width=True)
                    if st.button(
                        "Create New Session",
                        key="create_session",
                        use_container_width=True,
                    ):
                        st.session_state.show_create_session_form = True

            if st.button("Logout", use_container_width=True):
                for key in st.session_state.keys():
                    del st.session_state[key]
                st.rerun()

        # if create_session:
        #     create_session_form(selected_course_id)
        if st.session_state.get("show_create_course_form"):
            create_course_form(st.session_state.username, st.session_state.user_id)
        elif st.session_state.get("show_create_session_form"):
            create_session_form(selected_course_id)
        elif st.session_state.get("show_enroll_course_page"):
            show_available_courses(st.session_state.username, st.session_state.user_type, st.session_state.user_id)
        else:
            # Main content
            if "selected_session" in st.session_state:
                display_session_content(
                    st.session_state.user_id,
                    selected_course_id,
                    st.session_state.selected_session,
                    st.session_state.username,
                    st.session_state.user_type,
                )
            else:
                st.info("Select a session to view details")
        # # Main content
        # if 'selected_session' in st.session_state:
        #     display_session_content(st.session_state.user_id, selected_course_id, st.session_state.selected_session, st.session_state.username, st.session_state.user_type)
        # if create_session:
        #     create_session_form(selected_course_id)

def main():
    st.set_page_config(page_title="NOVAScholar", page_icon="πŸ“š", layout="wide")
    init_session_state()
    # modify_courses_collection_schema()

    if not st.session_state.authenticated:
        login_tab, register_tab = st.tabs(["Login", "Register"])

        with register_tab:
            register_page()
        with login_tab:
            login_form()
    else:
        main_dashboard()


if __name__ == "__main__":
    main()