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

# Disable GPU usage for TensorFlow
os.environ['CUDA_VISIBLE_DEVICES'] = '-1'
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'

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

# Initialize Lancaster Stemmer
stemmer = LancasterStemmer()

# Load chatbot training data and intents
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's neural network 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 models for sentiment and emotion detection
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'))

# Function to process text input into a bag-of-words format
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)

# Chatbot Logic
def chatbot(message, history):
    """Generate chatbot response and append to history."""
    history = history or []
    try:
        result = chatbot_model.predict([bag_of_words(message, words)])
        tag = labels[np.argmax(result)]
        response = "I'm not sure how to respond to that. 🤔"
        for intent in intents_data["intents"]:
            if intent["tag"] == tag:
                response = random.choice(intent["responses"])
                break
    except Exception as e:
        response = f"Error: {str(e)}"
    history.append((message, response))
    return history, response

# Sentiment Analysis
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 sentiment_map[sentiment_class]

# Emotion Detection
def detect_emotion(user_input):
    pipe = pipeline("text-classification", model=model_emotion, tokenizer=tokenizer_emotion)
    result = pipe(user_input)
    emotion = result[0]['label']
    return emotion

# Generate Suggestions
def generate_suggestions(emotion):
    """Return suggestions aligned with the detected emotion."""
    suggestions = {
        "joy": [
            ["Relaxation Techniques", '<a href="https://www.helpguide.org/mental-health/meditation/mindful-breathing-meditation" target="_blank">Visit</a>'],
            ["Dealing with Stress", '<a href="https://www.helpguide.org/mental-health/anxiety/tips-for-dealing-with-anxiety" target="_blank">Visit</a>'],
            ["Emotional Wellness Toolkit", '<a href="https://www.nih.gov/health-information/emotional-wellness-toolkit" target="_blank">Visit</a>'],
            ["Relaxation Videos", '<a href="https://youtu.be/m1vaUGtyo-A" target="_blank">Watch</a>']
        ],
        "anger": [
            ["Emotional Wellness Toolkit", '<a href="https://www.nih.gov/health-information/emotional-wellness-toolkit" target="_blank">Visit</a>'],
            ["Stress Management Tips", '<a href="https://www.health.harvard.edu" target="_blank">Visit</a>'],
            ["Dealing with Anger", '<a href="https://www.helpguide.org/mental-health/anger-management" target="_blank">Visit</a>'],
            ["Relaxation Videos", '<a href="https://youtu.be/MIc299Flibs" target="_blank">Watch</a>']
        ],
        "fear": [
            ["Mindfulness Practices", '<a href="https://www.helpguide.org/mental-health/meditation/mindful-breathing-meditation" target="_blank">Visit</a>'],
            ["Coping with Anxiety", '<a href="https://www.helpguide.org/mental-health/anxiety/tips-for-dealing-with-anxiety" target="_blank">Visit</a>'],
            ["Relaxation Videos", '<a href="https://youtu.be/yGKKz185M5o" target="_blank">Watch</a>']
        ],
        "sadness": [
            ["Emotional Wellness Toolkit", '<a href="https://www.nih.gov/health-information/emotional-wellness-toolkit" target="_blank">Visit</a>'],
            ["Dealing with Anxiety", '<a href="https://www.helpguide.org/mental-health/anxiety/tips-for-dealing-with-anxiety" target="_blank">Visit</a>'],
            ["Relaxation Videos", '<a href="https://youtu.be/-e-4Kx5px_I" target="_blank">Watch</a>']
        ],
        "surprise": [
            ["Managing Stress", '<a href="https://www.health.harvard.edu" target="_blank">Visit</a>'],
            ["Coping Strategies", '<a href="https://www.helpguide.org/mental-health/anxiety/tips-for-dealing-with-anxiety" target="_blank">Visit</a>'],
            ["Relaxation Videos", '<a href="https://youtu.be/m1vaUGtyo-A" target="_blank">Watch</a>']
        ],
    }
    return suggestions.get(emotion.lower(), [["No suggestions available", ""]])

# Get Health Professionals and Generate Map
def get_health_professionals_and_map(location, query):
    """Search professionals and return details + map as HTML."""
    try:
        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"]

            map_ = folium.Map(location=(lat, lng), zoom_start=13)
            professionals = []
            for place in places_result:
                professionals.append(f"{place['name']} - {place.get('vicinity', '')}")
                folium.Marker([place["geometry"]["location"]["lat"], place["geometry"]["location"]["lng"]],
                              popup=place["name"]).add_to(map_)
            return professionals, map_._repr_html_()
        return ["No professionals found"], ""
    except Exception as e:
        return [f"Error: {e}"], ""

# Main Application Logic
def app_function(user_input, location, query, history):
    chatbot_history, response = chatbot(user_input, history)
    emotion = detect_emotion(user_input)
    suggestions = generate_suggestions(emotion)
    professionals, map_html = get_health_professionals_and_map(location, query)
    return chatbot_history, emotion, suggestions, professionals, map_html

# Enhanced CSS for Custom UI
custom_css = """
body {
    background: linear-gradient(135deg, #000000, #ff5722);
    color: white;
    font-family: 'Roboto', sans-serif;
}
textarea, input[type="text"], .gr-chatbot {
    background: #000000 !important;
    color: white !important;
    border: 2px solid #ff5722 !important;
    border-radius: 5px;
    padding: 12px !important;
}
.gr-dataframe {
    background: #000000 !important;
    color: white !important;
    height: 350px !important;
    border: 2px solid #ff5722 !important;
    overflow-y: auto;
}
h1, h2, h3 {
    color: white;
    text-align: center;
    font-weight: bold;
}
"""

# Gradio Application
with gr.Blocks(css=custom_css) as app:
    gr.Markdown("<h1>🌟 Well-Being Companion</h1>")
    gr.Markdown("<h2>Empowering Your Well-Being Journey 💚</h2>")

    with gr.Row():
        user_input = gr.Textbox(label="Your Message", placeholder="Enter your message...")
        location = gr.Textbox(label="Your Location", placeholder="Enter your location...")
        query = gr.Textbox(label="Query (e.g., therapists)", placeholder="Search...")

    chatbot_history = gr.Chatbot(label="Chat History")
    emotion_box = gr.Textbox(label="Detected Emotion")
    suggestions_table = gr.DataFrame(headers=["Suggestion", "Link"])
    map_box = gr.HTML(label="Map of Health Professionals")
    professionals_list = gr.Textbox(label="Health Professionals Nearby", lines=5)

    submit_button = gr.Button("Submit")

    submit_button.click(
        app_function,
        inputs=[user_input, location, query, chatbot_history],
        outputs=[chatbot_history, emotion_box, suggestions_table, professionals_list, map_box],
    )

app.launch()