import os
import streamlit as st
import requests
import pyttsx3
from transformers import pipeline
from PIL import Image
from dotenv import load_dotenv

# Load environment variables from .env file
load_dotenv()

# Set up the Hugging Face API URL and your API key
API_URL = "https://api-inference.huggingface.co/models/trpakov/vit-face-expression"
headers = {"Authorization": f"Bearer {os.getenv('HUGGINGFACE_API_KEY')}"}

# Function to query the Hugging Face model for facial expression
def query(filename):
    with open(filename, "rb") as f:
        data = f.read()
    response = requests.post(API_URL, headers=headers, data=data)
    
    if response.status_code == 200:
        return response.json()
    else:
        st.error("Error detecting facial expression: " + response.text)
        return None

# Function to generate a joke or uplifting text based on the mood
def generate_text_based_on_mood(emotion):
    generator = pipeline('text-generation', model='gpt2')
    prompt = f"Tell a joke that would cheer someone who is feeling {emotion}."
    response = generator(prompt, max_length=50, num_return_sequences=1)
    return response[0]['generated_text']

# Function to convert text to speech
def text_to_speech(text):
    engine = pyttsx3.init()
    engine.say(text)
    engine.runAndWait()

# Streamlit UI
st.title("Facial Expression Mood Detector")
st.write("Upload an image of a face to detect mood and receive uplifting messages or jokes.")

# Upload image
uploaded_file = st.file_uploader("Choose an image...", type=["jpg", "jpeg", "png"])

if uploaded_file is not None:
    # Load and display the image
    image = Image.open(uploaded_file)
    st.image(image, caption='Uploaded Image', use_column_width=True)

    # Save the uploaded file temporarily
    with open("uploaded_image.jpg", "wb") as f:
        f.write(uploaded_file.getbuffer())

    # Detect facial expression
    expression_output = query("uploaded_image.jpg")
    if expression_output:
        emotion = expression_output[0]['label']  # Adjust as per the actual response structure
        st.write(f"Detected emotion: {emotion}")

        # Generate text based on detected emotion
        joke = generate_text_based_on_mood(emotion)
        st.write("Here's something to cheer you up:")
        st.write(joke)

        # Convert the generated joke to audio
        text_to_speech(joke)