import os
import gradio as gr
import pandas as pd
from functools import partial
from ai_classroom_suite.UIBaseComponents import *

# history is a list of list  
# [[user_input_str, bot_response_str], ...]

class EchoingTutor(SlightlyDelusionalTutor):
    def add_user_message(self, user_message):
        self.conversation_memory.append([user_message, None])
        self.flattened_conversation = self.flattened_conversation + '\n\n' + 'User: ' + user_message

    def get_tutor_reply(self, user_message):
        # get tutor message
        tutor_message = "You said: " + user_message
        # add tutor message to conversation memory
        self.conversation_memory[-1][1] = tutor_message
        self.flattened_conversation = self.flattened_conversation + '\nAI: ' + tutor_message

    def forget_conversation(self):
        self.conversation_memory = []
        self.flattened_conversation = ''


### Chatbot Functions ###
def add_user_message(user_message, chat_tutor):
  """Display user message and update chat history to include it."""
  chat_tutor.add_user_message(user_message)
  return chat_tutor.conversation_memory, chat_tutor

def get_tutor_reply(user_message, chat_tutor):
  chat_tutor.get_tutor_reply(user_message)
  return gr.update(value="", interactive=True), chat_tutor.conversation_memory, chat_tutor

def get_conversation_history(chat_tutor):
    return chat_tutor.conversation_memory, chat_tutor
        

with gr.Blocks() as demo:
    #initialize tutor (with state)
    study_tutor = gr.State(EchoingTutor())

    # Instead of ask students to provide key, the key is now directly provided by the instructor
    embed_key(os.environ.get("OPENAI_API_KEY"), study_tutor)
    # Reference document functionality (building vector stores)
    with gr.Box():
        gr.Markdown("### Add Reference Documents")
        # TODO Add entry for path to vector store (should be disabled for now)
        with gr.Row(equal_height=True):
            text_input = gr.TextArea(label='Copy and paste your text below', lines=2)
            file_input = gr.Files(label="Load a .txt or .pdf file", file_types=['.pdf', '.txt'], type="file", elem_classes="short-height")
            instructor_input = gr.TextArea(label='Enter vector store URL, if given by instructor (WIP)', value='', lines=2, interactive=False, elem_classes="translucent")
            learning_objectives = gr.Textbox(label='If provided by your instructor, please input your learning objectives for this session', value='')
    
    # Adding the button to submit all of the settings and create the Chat Tutor Chain.
    with gr.Row():
      vs_build_button = gr.Button(value = 'Start Studying with Your Tutor!', scale=1)
      vs_build_button.click(disable_until_done, vs_build_button, vs_build_button) \
        .then(create_reference_store, [study_tutor, vs_build_button, text_input, file_input, instructor_input, api_input, learning_objectives],
                            [study_tutor, vs_build_button])
        
    # Chatbot interface
    gr.Markdown("""
    ## Chat with the Model
    Description here
    """)

    with gr.Row(equal_height=True):
        with gr.Column(scale=2):
          chatbot = gr.Chatbot()
          with gr.Row():
            user_chat_input = gr.Textbox(label="User input", scale=9)
            user_chat_submit = gr.Button("Ask/answer model", scale=1)
    
    user_chat_submit.click(add_user_message, 
                           [user_chat_input, study_tutor], 
                           [chatbot, study_tutor], queue=False).then(
        get_tutor_reply, [user_chat_input, study_tutor], [user_chat_input, chatbot, study_tutor], queue=True)

    # Testing purpose
    test_btn = gr.Button("View your chat history")
    chat_history = gr.JSON(label = "conversation history")
    test_btn.click(get_conversation_history, inputs=[study_tutor], outputs=[chat_history, study_tutor])

    with gr.Blocks():
        gr.Markdown("""
        ## Export Your Chat History
        Export your chat history as a .json, .txt, or .csv file
        """)
        with gr.Row():
            export_dialogue_button_json = gr.Button("JSON")
            export_dialogue_button_txt = gr.Button("TXT")
            export_dialogue_button_csv = gr.Button("CSV")
        
        file_download = gr.Files(label="Download here",
                                 file_types=['.json', '.txt', '.csv'], type="file", visible=False)
        
        export_dialogue_button_json.click(save_json, study_tutor, file_download, show_progress=True)
        export_dialogue_button_txt.click(save_txt, study_tutor, file_download, show_progress=True)
        export_dialogue_button_csv.click(save_csv, study_tutor, file_download, show_progress=True)


demo.queue().launch(server_name='0.0.0.0', server_port=7860)