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import os
import streamlit as st
import json
import requests
import re
from bs4 import BeautifulSoup
from streamlit_option_menu import option_menu
from gemini_utility import (load_gemini_pro, gemini_pro_vision_responce)
from PIL import Image

# Setting the page config
st.set_page_config(
    page_title="GnosticDev AI",
    page_icon="馃",
    layout="centered",
    initial_sidebar_state="expanded",
)

CONFIG_FILE = "config.json"

# Funci贸n para cargar configuraciones desde un archivo JSON
def load_config():
    if os.path.exists(CONFIG_FILE):
        try:
            with open(CONFIG_FILE, "r") as file:
                return json.load(file)
        except Exception as e:
            st.error(f"Error cargando configuraciones: {e}")
    return {}

# Funci贸n para guardar configuraciones en un archivo JSON
def save_config(config):
    try:
        with open(CONFIG_FILE, "w") as file:
            json.dump(config, file, indent=4)
    except Exception as e:
        st.error(f"Error guardando configuraciones: {e}")

# Cargar configuraciones al inicio
config = load_config()
if "system_prompt" not in config:
    config["system_prompt"] = ""

# Inicializar estados
if "system_prompt" not in st.session_state:
    st.session_state.system_prompt = config["system_prompt"]

def save_chat_history(history):
    serializable_history = []
    for message in history:
        serializable_history.append({
            "role": message.role,
            "text": message.parts[0].text
        })
    st.session_state.cookie_chat_history = json.dumps(serializable_history)

def load_chat_history():
    if 'cookie_chat_history' in st.session_state:
        try:
            history = json.loads(st.session_state.cookie_chat_history)
            model = load_gemini_pro()
            chat = model.start_chat(history=[])
            if st.session_state.system_prompt:
                chat.send_message(st.session_state.system_prompt)
            for message in history:
                if message["role"] != "model" or not message["text"].startswith(st.session_state.system_prompt):
                    chat.send_message(message["text"])
            return chat
        except Exception as e:
            st.error(f"Error cargando el historial: {e}")
    return None

with st.sidebar:
    selected = option_menu(
        "GD AI",
        ["System Prompt", "Chatbot", "Image Captioning"],
        menu_icon="robot",
        icons=['gear', 'chat-dots-fill', 'image-fill'],
        default_index=0
    )

    if st.button("Borrar Historial"):
        if 'cookie_chat_history' in st.session_state:
            del st.session_state.cookie_chat_history
        if 'chat_session' in st.session_state:
            del st.session_state.chat_session
        st.success("Historial borrado!")

def translate_role_to_streamlit(user_role):
    if user_role == "model":
        return "assistant"
    else:
        return user_role

def extract_urls(text):
    url_pattern = r"(https?://\S+)"
    urls = re.findall(url_pattern, text)
    return urls

def fetch_url_content(url):
    try:
        response = requests.get(url, timeout=10)
        response.raise_for_status()
        return response.text
    except requests.exceptions.RequestException as e:
        return f"Error al acceder a la URL '{url}': {e}"

def process_url_content(content):
    try:
        soup = BeautifulSoup(content, "html.parser")
        text = soup.get_text(" ", strip=True)
        return text
    except Exception as e:
        return f"Error al procesar el contenido HTML: {e}"

def process_urls_in_prompt(prompt):
    urls = extract_urls(prompt)
    new_prompt = prompt
    for url in urls:
        content = fetch_url_content(url)
        if content.startswith("Error"):
            new_prompt = new_prompt.replace(url, content)
        else:
            processed_content = process_url_content(content)
            new_prompt = new_prompt.replace(url, processed_content)
    return new_prompt

if selected == "System Prompt":
    st.title("Configuraci贸n del System Prompt")
    new_system_prompt = st.text_area(
        "Ingresa las instrucciones para el AI (System Prompt), incluyendo URLs",
        value=st.session_state.system_prompt,
        height=300,
        help="Escribe aqu铆 las instrucciones que definir谩n el comportamiento del AI. Puedes incluir URLs."
    )

    if st.button("Guardar System Prompt"):
        processed_prompt = process_urls_in_prompt(new_system_prompt)
        st.session_state.system_prompt = processed_prompt
        config["system_prompt"] = processed_prompt
        save_config(config)
        if "chat_session" in st.session_state:
            del st.session_state.chat_session
        st.success("System Prompt actualizado con 茅xito!")

    

elif selected == "Chatbot":
    model = load_gemini_pro()
    if "chat_session" not in st.session_state:
        loaded_chat = load_chat_history()
        if loaded_chat:
            st.session_state.chat_session = loaded_chat
        else:
            # Crea una nueva sesi贸n de chat sin enviar el system_prompt como mensaje inicial
            st.session_state.chat_session = model.start_chat(history=[])

    st.title("Gnosticdev Chatbot")

    # Muestra solo el historial del chat, si existe
    for message in st.session_state.chat_session.history:
        with st.chat_message(translate_role_to_streamlit(message.role)):
            st.markdown(message.parts[0].text)

    # Entrada del usuario
    user_prompt = st.chat_input("Preg煤ntame algo...")
    if user_prompt:
        processed_user_prompt = process_urls_in_prompt(user_prompt)
        st.chat_message("user").markdown(processed_user_prompt)
        gemini_response = st.session_state.chat_session.send_message(processed_user_prompt)
        with st.chat_message("assistant"):
            st.markdown(gemini_response.text)
        save_chat_history(st.session_state.chat_session.history)


elif selected == "Image Captioning":
    st.title("Image Caption Generation馃摳")
    upload_image = st.file_uploader("Sube una imagen...", type=["jpg", "jpeg", "png"])
    
    if upload_image and st.button("Generar"):
        try:
            # Cargar y mostrar la imagen
            image = Image.open(upload_image)
            col1, col2 = st.columns(2)
            with col1:
                st.image(image, caption="Imagen subida", use_column_width=True)

            # Generar un subt铆tulo usando una funci贸n de visi贸n AI
            default_prompt = "Escribe un subt铆tulo para esta imagen"
            caption = gemini_pro_vision_responce(default_prompt, image)
            
                        # Mostrar el resultado
            with col2:
                st.info(caption)
        except Exception as e:
            st.error(f"Error procesando la imagen: {e}")

# Mensaje por defecto si ninguna secci贸n est谩 seleccionada
else:
    st.write("Selecciona una opci贸n en el men煤 para comenzar.")