import os
import gradio as gr
import nltk
import numpy as np
import tflearn
import random
import json
import pickle
from nltk.tokenize import word_tokenize
from nltk.stem.lancaster import LancasterStemmer
from transformers import AutoTokenizer, AutoModelForSequenceClassification, pipeline
import googlemaps
import folium
import torch
import pandas as pd
from sklearn.tree import DecisionTreeClassifier
from sklearn.ensemble import RandomForestClassifier
from sklearn.naive_bayes import GaussianNB
from sklearn.metrics import accuracy_score


# Suppress TensorFlow warnings
os.environ["CUDA_VISIBLE_DEVICES"] = "-1"
os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3"

# Download necessary NLTK resources
nltk.download("punkt")
stemmer = LancasterStemmer()

# Load intents and chatbot training data
with open("intents.json") as file:
    intents_data = json.load(file)

with open("data.pickle", "rb") as f:
    words, labels, training, output = pickle.load(f)

# Build the chatbot model
net = tflearn.input_data(shape=[None, len(training[0])])
net = tflearn.fully_connected(net, 8)
net = tflearn.fully_connected(net, 8)
net = tflearn.fully_connected(net, len(output[0]), activation="softmax")
net = tflearn.regression(net)
chatbot_model = tflearn.DNN(net)
chatbot_model.load("MentalHealthChatBotmodel.tflearn")

# Hugging Face sentiment and emotion models
tokenizer_sentiment = AutoTokenizer.from_pretrained("cardiffnlp/twitter-roberta-base-sentiment")
model_sentiment = AutoModelForSequenceClassification.from_pretrained("cardiffnlp/twitter-roberta-base-sentiment")
tokenizer_emotion = AutoTokenizer.from_pretrained("j-hartmann/emotion-english-distilroberta-base")
model_emotion = AutoModelForSequenceClassification.from_pretrained("j-hartmann/emotion-english-distilroberta-base")

# Google Maps API Client
gmaps = googlemaps.Client(key=os.getenv("GOOGLE_API_KEY"))

# Disease Prediction Code
def load_data():
    try:
        df = pd.read_csv("Training.csv")
        tr = pd.read_csv("Testing.csv")
    except FileNotFoundError:
        raise RuntimeError("Data files not found. Please ensure `Training.csv` and `Testing.csv` are uploaded correctly.")
    
    disease_dict = {
        'Fungal infection': 0, 'Allergy': 1, 'GERD': 2, 'Chronic cholestasis': 3, 'Drug Reaction': 4,
        'Peptic ulcer diseae': 5, 'AIDS': 6, 'Diabetes': 7, 'Gastroenteritis': 8, 'Bronchial Asthma': 9,
        'Hypertension': 10, 'Migraine': 11, 'Cervical spondylosis': 12, 'Paralysis': 13,
        'Jaundice': 14, 'Malaria': 15, 'Chicken pox': 16, 'Dengue': 17, 'Typhoid': 18,
        'Hepatitis A': 19, 'Hepatitis B': 20, 'Hepatitis C': 21, 'Hepatitis D': 22, 'Hepatitis E': 23,
        'Alcoholic hepatitis': 24, 'Tuberculosis': 25, 'Common Cold': 26, 'Pneumonia': 27,
        'Heart attack': 28, 'Varicose veins': 29, 'Hypothyroidism': 30, 'Hyperthyroidism': 31,
        'Hypoglycemia': 32, 'Osteoarthritis': 33, 'Arthritis': 34
    }

    df.replace({'prognosis': disease_dict}, inplace=True)
    df = df.infer_objects(copy=False)

    tr.replace({'prognosis': disease_dict}, inplace=True)
    tr = tr.infer_objects(copy=False)

    return df, tr, disease_dict

df, tr, disease_dict = load_data()
l1 = list(df.columns[:-1])
X = df[l1]
y = df['prognosis']
X_test = tr[l1]
y_test = tr['prognosis']

def train_models():
    models = {
        "Decision Tree": DecisionTreeClassifier(),
        "Random Forest": RandomForestClassifier(),
        "Naive Bayes": GaussianNB()
    }
    trained_models = {}
    for model_name, model_obj in models.items():
        model_obj.fit(X, y)
        acc = accuracy_score(y_test, model_obj.predict(X_test))
        trained_models[model_name] = (model_obj, acc)
    return trained_models

trained_models = train_models()

def predict_disease(model, symptoms):
    input_test = np.zeros(len(l1))
    for symptom in symptoms:
        if symptom in l1:
            input_test[l1.index(symptom)] = 1
    prediction = model.predict([input_test])[0]
    confidence = model.predict_proba([input_test])[0][prediction] if hasattr(model, 'predict_proba') else None
    return {
        "disease": list(disease_dict.keys())[list(disease_dict.values()).index(prediction)],
        "confidence": confidence
    }

def disease_prediction_interface(symptoms):
    symptoms_selected = [s for s in symptoms if s != "None"]
    
    if len(symptoms_selected) < 3:
        return ["Please select at least 3 symptoms for accurate prediction."]
    
    results = []
    for model_name, (model, acc) in trained_models.items():
        prediction_info = predict_disease(model, symptoms_selected)
        predicted_disease = prediction_info["disease"]
        confidence_score = prediction_info["confidence"]
        
        result = f"{model_name} Prediction: Predicted Disease: **{predicted_disease}**"
        if confidence_score is not None:
            result += f" (Confidence: {confidence_score:.2f})"
        result += f" (Accuracy: {acc * 100:.2f}%)"
        
        results.append(result)

    return results

# Helper Functions (for chatbot)
def bag_of_words(s, words):
    bag = [0] * len(words)
    s_words = word_tokenize(s)
    s_words = [stemmer.stem(word.lower()) for word in s_words if word.isalnum()]
    for se in s_words:
        for i, w in enumerate(words):
            if w == se:
                bag[i] = 1
    return np.array(bag)

def generate_chatbot_response(message, history):
    history = history or []
    try:
        result = chatbot_model.predict([bag_of_words(message, words)])
        tag = labels[np.argmax(result)]
        response = next((random.choice(intent["responses"]) for intent in intents_data["intents"] if intent["tag"] == tag), "I'm sorry, I didn't understand that. 🤔")
    except Exception as e:
        response = f"Error: {e}"
    history.append((message, response))
    return history, response

def analyze_sentiment(user_input):
    inputs = tokenizer_sentiment(user_input, return_tensors="pt")
    with torch.no_grad():
        outputs = model_sentiment(**inputs)
    sentiment_class = torch.argmax(outputs.logits, dim=1).item()
    sentiment_map = ["Negative 😔", "Neutral 😐", "Positive 😊"]
    return f"Sentiment: {sentiment_map[sentiment_class]}"

def detect_emotion(user_input):
    pipe = pipeline("text-classification", model=model_emotion, tokenizer=tokenizer_emotion)
    result = pipe(user_input)
    emotion = result[0]["label"].lower().strip()
    emotion_map = {
        "joy": "Joy 😊",
        "anger": "Anger 😠",
        "sadness": "Sadness 😢",
        "fear": "Fear 😨",
        "surprise": "Surprise 😲",
        "neutral": "Neutral 😐",
    }
    return emotion_map.get(emotion, "Unknown 🤔"), emotion

def generate_suggestions(emotion):
    emotion_key = emotion.lower()
    suggestions = {
        # Replace with appropriate suggestions for each emotion
    }
    
    formatted_suggestions = [
        [title, f'<a href="{link}" target="_blank">{link}</a>'] for title, link in suggestions.get(emotion_key, [["No specific suggestions available.", "#"]])
    ]
    return formatted_suggestions

def get_health_professionals_and_map(location, query):
    try:
        if not location or not query:
            return [], ""
        geo_location = gmaps.geocode(location)
        if geo_location:
            lat, lng = geo_location[0]["geometry"]["location"].values()
            places_result = gmaps.places_nearby(location=(lat, lng), radius=10000, keyword=query)["results"]
            professionals = []
            map_ = folium.Map(location=(lat, lng), zoom_start=13)
            for place in places_result:
                professionals.append([place['name'], place.get('vicinity', 'No address provided')])
                folium.Marker(
                    location=[place["geometry"]["location"]["lat"], place["geometry"]["location"]["lng"]],
                    popup=f"{place['name']}"
                ).add_to(map_)
            return professionals, map_._repr_html_()
        return [], ""
    except Exception as e:
        return [], ""

# Main Application Logic
def app_function(user_input, location, query, symptoms, history):
    chatbot_history, _ = generate_chatbot_response(user_input, history)
    sentiment_result = analyze_sentiment(user_input)
    emotion_result, cleaned_emotion = detect_emotion(user_input)
    suggestions = generate_suggestions(cleaned_emotion)
    professionals, map_html = get_health_professionals_and_map(location, query)
    disease_results = disease_prediction_interface(symptoms)
    
    return (
        chatbot_history, 
        sentiment_result, 
        emotion_result, 
        suggestions, 
        professionals, 
        map_html,
        disease_results
    )

# CSS Styling
custom_css = """
body {
    font-family: 'Roboto', sans-serif;
    background-color: #3c6487;
    color: white;
}
h1 {
    background: #ffffff;
    color: #000000;
    border-radius: 8px;
    padding: 10px;
    font-weight: bold;
    text-align: center;
    font-size: 2.5rem;
}
textarea, input {
    background: transparent;
    color: black;
    border: 2px solid orange;
    padding: 8px;
    font-size: 1rem;
    caret-color: black;
    outline: none;
    border-radius: 8px;
}
textarea:focus, input:focus {
    background: transparent;
    color: black;
    border: 2px solid orange;
    outline: none;
}
.df-container {
    background: white;
    color: black;
    border: 2px solid orange;
    border-radius: 10px;
    padding: 10px;
    font-size: 14px;
    max-height: 400px;
    height: auto;
    overflow-y: auto;
}
#suggestions-title {
    text-align: center !important;
    font-weight: bold !important;
    color: white !important;
    font-size: 4.2rem !important;
    margin-bottom: 20px !important;
}
.gr-button {
    background-color: #ae1c93;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    transition: background-color 0.3s ease;
}
.gr-button:hover {
    background-color: #8f167b;
}
.gr-button:active {
    background-color: #7f156b;
}
"""

# Gradio Application
with gr.Blocks(css=custom_css) as app:
    gr.HTML("<h1>🌟 Well-Being Companion</h1>")
    
    with gr.Row():
        user_input = gr.Textbox(label="Please Enter Your Message Here")
        location = gr.Textbox(label="Your Current Location Here")
        query = gr.Textbox(label="Search Health Professionals Nearby")
        
    with gr.Row():
        symptom1 = gr.Dropdown(choices=["None"] + l1, label="Symptom 1")
        symptom2 = gr.Dropdown(choices=["None"] + l1, label="Symptom 2")
        symptom3 = gr.Dropdown(choices=["None"] + l1, label="Symptom 3")
        symptom4 = gr.Dropdown(choices=["None"] + l1, label="Symptom 4")
        symptom5 = gr.Dropdown(choices=["None"] + l1, label="Symptom 5")

    submit = gr.Button(value="Submit", variant="primary")

    chatbot = gr.Chatbot(label="Chat History")
    sentiment = gr.Textbox(label="Detected Sentiment")
    emotion = gr.Textbox(label="Detected Emotion")
    
    gr.Markdown("Suggestions", elem_id="suggestions-title")
    
    suggestions = gr.DataFrame(headers=["Title", "Link"])  # Suggestions DataFrame
    professionals = gr.DataFrame(label="Nearby Health Professionals", headers=["Name", "Address"])  # Professionals DataFrame
    map_html = gr.HTML(label="Interactive Map")
    disease_predictions = gr.Textbox(label="Disease Predictions")  # For Disease Prediction Results

    submit.click(
        app_function,
        inputs=[user_input, location, query, [symptom1, symptom2, symptom3, symptom4, symptom5], chatbot],
        outputs=[chatbot, sentiment, emotion, suggestions, professionals, map_html, disease_predictions],
    )

app.launch()