import os
import streamlit as st
import spacy
from spacy import displacy
import re
from transformers import BlenderbotTokenizer, BlenderbotForConditionalGeneration
from azure.cosmos import CosmosClient
from azure.cosmos.exceptions import CosmosHttpResponseError
from pymongo import MongoClient
import numpy as np
from dotenv import load_dotenv
load_dotenv()

from modules.auth import clean_and_validate_key, register_user, authenticate_user, get_user_role
from modules.morpho_analysis import get_repeated_words_colors, highlight_repeated_words, POS_COLORS, POS_TRANSLATIONS
from modules.syntax_analysis import visualize_syntax

# Azure Cosmos DB configuration
cosmos_endpoint = os.environ.get("COSMOS_ENDPOINT")
cosmos_key = os.environ.get("COSMOS_KEY")

if not cosmos_endpoint or not cosmos_key:
    raise ValueError("Las variables de entorno COSMOS_ENDPOINT y COSMOS_KEY deben estar configuradas")

try:
    cosmos_key = clean_and_validate_key(cosmos_key)
    cosmos_client = CosmosClient(cosmos_endpoint, cosmos_key)
    
    # SQL API database for user management
    user_database = cosmos_client.get_database_client("user_database")
    user_container = user_database.get_container_client("users")
    
    print("Conexión a Cosmos DB SQL API exitosa")
except Exception as e:
    print(f"Error al conectar con Cosmos DB SQL API: {str(e)}")
    raise

# MongoDB API configuration for text analysis results
#mongo_connection_string = os.environ.get("MONGODB_CONNECTION_STRING")
cosmos_mongodb_connection_string = os.getenv("MONGODB_CONNECTION_STRING")

if not mongo_connection_string:
    raise ValueError("La variable de entorno MONGODB_CONNECTION_STRING debe estar configurada")

try:
    #Crear el cliente de MongoDB
    mongo_client = MongoClient(mongo_connection_string)
    
    #Seleccionar la base de datos
    mongo_db = mongo_client['aideatext_db']
    
    #Seleccionar o crear la colección
    analysis_collection = mongo_db['text_analysis']
    
    # Prueba de conexión
    mongo_client.server_info()
    print("Conexión a MongoDB API exitosa")
except Exception as e:
    print(f"Error al conectar con MongoDB API: {str(e)}")
    raise

# Configure the page to use the full width
st.set_page_config(
    page_title="AIdeaText",
    layout="wide",
    page_icon="random"
)

@st.cache_resource
def load_chatbot_model():
    tokenizer = BlenderbotTokenizer.from_pretrained("facebook/blenderbot-400M-distill")
    model = BlenderbotForConditionalGeneration.from_pretrained("facebook/blenderbot-400M-distill")
    return tokenizer, model

# Load the chatbot model
chatbot_tokenizer, chatbot_model = load_chatbot_model()

def get_chatbot_response(input_text):
    inputs = chatbot_tokenizer(input_text, return_tensors="pt")
    reply_ids = chatbot_model.generate(**inputs)
    response = chatbot_tokenizer.batch_decode(reply_ids, skip_special_tokens=True)[0]
    return response

def load_spacy_models():
    return {
        'es': spacy.load("es_core_news_lg"),
        'en': spacy.load("en_core_web_lg"),
        'fr': spacy.load("fr_core_news_lg")
    }

def store_analysis_result(username, text, repeated_words, arc_diagram, network_diagram):
    try:
        analysis_collection.insert_one({
            'username': username,
            'text': text,
            'repeated_words': repeated_words,
            'arc_diagram': arc_diagram,
            'network_diagram': network_diagram
        })
        return True
    except Exception as e:
        st.error(f"Error storing analysis result: {e}")
        return False

def login_page():
    st.title("Iniciar Sesión")
    username = st.text_input("Usuario")
    password = st.text_input("Contraseña", type='password')
    if st.button("Iniciar Sesión"):
        if authenticate_user(username, password):
            st.success(f"Bienvenido, {username}!")
            st.session_state.logged_in = True
            st.session_state.username = username
            st.session_state.role = get_user_role(username)
            st.experimental_rerun()
        else:
            st.error("Usuario o contraseña incorrectos")

def register_page():
    st.title("Registrarse")
    new_username = st.text_input("Nuevo Usuario")
    new_password = st.text_input("Nueva Contraseña", type='password')
    role = st.selectbox("Rol", ["Estudiante", "Profesor"])
    
    additional_info = {}
    if role == "Estudiante":
        additional_info['carrera'] = st.text_input("Carrera")
    elif role == "Profesor":
        additional_info['departamento'] = st.text_input("Departamento")

    if st.button("Registrarse"):
        if register_user(new_username, new_password, role, additional_info):
            st.success("Registro exitoso. Por favor, inicia sesión.")
        else:
            st.error("El usuario ya existe o ocurrió un error durante el registro")

def main_app():
    # Load spaCy models
    nlp_models = load_spacy_models()

    # Language selection
    languages = {
        'Español': 'es',
        'English': 'en',
        'Français': 'fr'
    }
    selected_lang = st.sidebar.selectbox("Select Language / Seleccione el idioma / Choisissez la langue", list(languages.keys()))
    lang_code = languages[selected_lang]

    # Translations
    translations = {
        'es': {
            'title': "AIdeaText - Análisis morfológico y sintáctico",
            'input_label': "Ingrese un texto para analizar (máx. 5,000 palabras):",
            'input_placeholder': "El objetivo de esta aplicación es que mejore sus habilidades de redacción. Para ello, después de ingresar su texto y presionar el botón obtendrá tres vistas horizontales. La primera, le indicará las palabras que se repiten por categoría gramátical; la segunda, un diagrama de arco le indicara las conexiones sintácticas en cada oración; y la tercera, es un grafo en el cual visualizara la configuración de su texto.",  
            'analyze_button': "Analizar texto",
            'repeated_words': "Palabras repetidas",
            'legend': "Leyenda: Categorías gramaticales",
            'arc_diagram': "Análisis sintáctico: Diagrama de arco",
            'network_diagram': "Análisis sintáctico: Diagrama de red",
            'sentence': "Oración"
        },
        'en': {
            'title': "AIdeaText - Morphological and Syntactic Analysis",
            'input_label': "Enter a text to analyze (max 5,000 words):",
            'input_placeholder': "The goal of this app is for you to improve your writing skills. To do this, after entering your text and pressing the button you will get three horizontal views. The first will indicate the words that are repeated by grammatical category; second, an arc diagram will indicate the syntactic connections in each sentence; and the third is a graph in which you will visualize the configuration of your text.",
            'analyze_button': "Analyze text",
            'repeated_words': "Repeated words",
            'legend': "Legend: Grammatical categories",
            'arc_diagram': "Syntactic analysis: Arc diagram",
            'network_diagram': "Syntactic analysis: Network diagram",
            'sentence': "Sentence"
        },
        'fr': {
            'title': "AIdeaText - Analyse morphologique et syntaxique",
            'input_label': "Entrez un texte à analyser (max 5 000 mots) :",
            'input_placeholder': "Le but de cette application est d'améliorer vos compétences en rédaction. Pour ce faire, après avoir saisi votre texte et appuyé sur le bouton vous obtiendrez trois vues horizontales. Le premier indiquera les mots répétés par catégorie grammaticale; deuxièmement, un diagramme en arcs indiquera les connexions syntaxiques dans chaque phrase; et le troisième est un graphique dans lequel vous visualiserez la configuration de votre texte.",
            'analyze_button': "Analyser le texte",
            'repeated_words': "Mots répétés",
            'legend': "Légende : Catégories grammaticales",
            'arc_diagram': "Analyse syntaxique : Diagramme en arc",
            'network_diagram': "Analyse syntaxique : Diagramme de réseau",
            'sentence': "Phrase"
        }
    }

    # Use translations
    t = translations[lang_code]

    # Create two columns: one for chat and one for analysis
    col1, col2 = st.columns([1, 2])

    with col1:
        st.markdown(f"### Chat con AIdeaText")

        # Initialize chat history if it doesn't exist
        if 'chat_history' not in st.session_state:
            st.session_state.chat_history = []

        # Display chat history
        for i, (role, text) in enumerate(st.session_state.chat_history):
            if role == "user":
                st.text_area(f"Tú:", value=text, height=50, key=f"user_message_{i}", disabled=True)
            else:
                st.text_area(f"AIdeaText:", value=text, height=50, key=f"bot_message_{i}", disabled=True)

        # User input field
        user_input = st.text_input("Escribe tu mensaje aquí:")

        if st.button("Enviar"):
            if user_input:
                # Add user message to history
                st.session_state.chat_history.append(("user", user_input))
                
                # Get chatbot response
                response = get_chatbot_response(user_input)
                
                # Add chatbot response to history
                st.session_state.chat_history.append(("bot", response))
                
                # Clear input field
                st.experimental_rerun()

    with col2: 
        st.markdown(f"### {t['title']}")
    
        if st.session_state.role == "Estudiante":
            # Student interface code
            if 'input_text' not in st.session_state:
                st.session_state.input_text = ""
    
            sentence_input = st.text_area(t['input_label'], height=150, placeholder=t['input_placeholder'], value=st.session_state.input_text)
            st.session_state.input_text = sentence_input
    
            if st.button(t['analyze_button']):
                if sentence_input:
                    doc = nlp_models[lang_code](sentence_input)
    
                    # Highlighted Repeated Words
                    with st.expander(t['repeated_words'], expanded=True):
                        word_colors = get_repeated_words_colors(doc)
                        highlighted_text = highlight_repeated_words(doc, word_colors)
                        st.markdown(highlighted_text, unsafe_allow_html=True)
    
                    # Legend for grammatical categories
                    st.markdown(f"##### {t['legend']}")
                    legend_html = "<div style='display: flex; flex-wrap: wrap;'>"
                    for pos, color in POS_COLORS.items():
                        if pos in POS_TRANSLATIONS:
                            legend_html += f"<div style='margin-right: 10px;'><span style='background-color: {color}; padding: 2px 5px;'>{POS_TRANSLATIONS[pos]}</span></div>"
                    legend_html += "</div>"
                    st.markdown(legend_html, unsafe_allow_html=True)
    
                    # Arc Diagram
                    with st.expander(t['arc_diagram'], expanded=True):
                        sentences = list(doc.sents)
                        arc_diagrams = []
                        for i, sent in enumerate(sentences):
                            st.subheader(f"{t['sentence']} {i+1}")
                            html = displacy.render(sent, style="dep", options={"distance": 100})
                            html = html.replace('height="375"', 'height="200"')
                            html = re.sub(r'<svg[^>]*>', lambda m: m.group(0).replace('height="450"', 'height="300"'), html)
                            html = re.sub(r'<g [^>]*transform="translate\((\d+),(\d+)\)"', lambda m: f'<g transform="translate({m.group(1)},50)"', html)
                            st.write(html, unsafe_allow_html=True)
                            arc_diagrams.append(html)
    
                    # Network graph
                    with st.expander(t['network_diagram'], expanded=True):
                        fig = visualize_syntax(sentence_input, nlp_models[lang_code], lang_code)
                        st.pyplot(fig)
                        
                    # Store analysis results
                    store_analysis_result(
                        st.session_state.username,
                        sentence_input,
                        highlighted_text,
                        arc_diagrams,
                        fig
                    )

        elif st.session_state.role == "Profesor":
            # Teacher interface code
            st.write("Bienvenido, profesor. Aquí podrás ver el progreso de tus estudiantes.")
            # Add logic to display student progress

def main():
    if 'logged_in' not in st.session_state:
        st.session_state.logged_in = False

    if not st.session_state.logged_in:
        menu = ["Iniciar Sesión", "Registrarse"]
        choice = st.sidebar.selectbox("Menu", menu)
        if choice == "Iniciar Sesión":
            login_page()
        elif choice == "Registrarse":
            register_page()
    else:
        if st.sidebar.button("Cerrar Sesión"):
            st.session_state.logged_in = False
            st.experimental_rerun()
        main_app()

if __name__ == "__main__":
    main()