import os
import streamlit as st
import requests
from transformers import pipeline
from typing import Dict
from together import Together
from utils import (
    img2txt, 
    txt2story, 
    txt2speech, 
    get_user_preferences, 
    send_story_email, 
    validate_email,
    validate_gmail_credentials
)

def main():
    st.set_page_config(
        page_title="🎨 Image-to-Audio Story 🎧",
        page_icon="🖼️",
        layout="wide"
    )
    st.title("Turn the Image into Audio Story")

    # Email Configuration in Sidebar
    st.sidebar.markdown("## 📧 Email Configuration")
    with st.sidebar.expander("Configure Gmail Settings", expanded=not bool(os.getenv('SENDER_EMAIL'))):
        sender_email = st.text_input(
            "Gmail Address:",
            value=os.getenv('SENDER_EMAIL', ''),
            type="default",
            key="gmail"
        )
        sender_password = st.text_input(
            "App Password:",
            value=os.getenv('SENDER_PASSWORD', ''),
            type="password",
            key="password",
            help="Use an App Password from your Google Account settings"
        )
        
        if st.button("Save Configuration"):
            if not sender_email or not sender_password:
                st.error("Please provide both email and password.")
            elif not validate_email(sender_email):
                st.error("Please enter a valid Gmail address.")
            else:
                # Validate credentials
                error = validate_gmail_credentials(sender_email, sender_password)
                if error:
                    st.error(f"Failed to validate credentials: {error}")
                else:
                    # Save credentials to environment variables
                    os.environ['SENDER_EMAIL'] = sender_email
                    os.environ['SENDER_PASSWORD'] = sender_password
                    st.success("Email configuration saved successfully!")

    # LLM Parameters in sidebar
    st.sidebar.markdown("# ⚙️ LLM Configuration")
    with st.sidebar.expander("Model Parameters", expanded=False):
        top_k = st.number_input("Top-K", min_value=1, max_value=100, value=5)
        top_p = st.number_input("Top-P", min_value=0.0, max_value=1.0, value=0.8)
        temperature = st.number_input("Temperature", min_value=0.1, max_value=2.0, value=1.5)

    # Main content area
    col1, col2 = st.columns([2, 3])

    with col1:
        # Image upload section
        st.markdown("## 📷 Upload Image")
        uploaded_file = st.file_uploader(
            "Choose an image...", 
            type=["jpg", "jpeg", "png"]
        )

        # Story preferences section
        st.markdown("## 🎭 Story Preferences")
        preferences = get_user_preferences()

    with col2:
        if uploaded_file is not None:
            # Display uploaded image
            st.markdown("## 🖼️ Your Image")
            bytes_data = uploaded_file.read()
            with open("uploaded_image.jpg", "wb") as file:
                file.write(bytes_data)
            st.image(uploaded_file, use_column_width=True)

            # Process image and generate story
            if st.button("🎨 Generate Story"):
                with st.spinner("🤖 AI is working its magic..."):
                    try:
                        # Get image description
                        scenario = img2txt("uploaded_image.jpg")
                        
                        # Create story prompt
                        prompt = f"""Based on the image description: '{scenario}', 
                        create a {preferences['genre']} story set in {preferences['setting']} 
                        in {preferences['continent']}. The story should have a {preferences['tone']} 
                        tone and explore the theme of {preferences['theme']}. The main conflict 
                        should be {preferences['conflict']}. The story should have a {preferences['twist']} 
                        and end with a {preferences['ending']} ending."""
                        
                        # Generate story
                        story = txt2story(prompt, top_k, top_p, temperature)
                        
                        # Convert to audio
                        txt2speech(story)

                        # Display results
                        st.markdown("---")
                        
                        # Image caption
                        with st.expander("📜 Image Caption", expanded=True):
                            st.write(scenario)
                        
                        # Story text
                        with st.expander("📖 Generated Story", expanded=True):
                            st.write(story)
                        
                        # Audio player
                        with st.expander("🎧 Audio Version", expanded=True):
                            st.audio("audio_story.mp3")
                        
                        # Email section
                        if os.getenv('SENDER_EMAIL') and os.getenv('SENDER_PASSWORD'):
                            st.markdown("---")
                            st.markdown("## 📧 Get Story via Email")
                            email = st.text_input(
                                "Enter your email address:",
                                help="We'll send you the story text and audio file"
                            )
                            
                            if st.button("📤 Send to Email"):
                                if not email:
                                    st.warning("Please enter an email address.")
                                elif not validate_email(email):
                                    st.error("Please enter a valid email address.")
                                else:
                                    with st.spinner("📨 Sending email..."):
                                        if send_story_email(email, story, "audio_story.mp3"):
                                            st.success("✉️ Story sent successfully! Check your email.")
                                        else:
                                            st.error("❌ Failed to send email. Please try again.")
                        else:
                            st.warning("⚠️ Please configure Gmail settings in the sidebar to enable email delivery.")

                    except Exception as e:
                        st.error(f"An error occurred: {str(e)}")
                        st.warning("Please try again or contact support if the problem persists.")

    # Footer
    st.markdown("---")
    st.markdown("### Credits")
    st.caption('''
        Made with ❤️ by @Aditya-Neural-Net-Ninja\n 
        Utilizes Image-to-Text model, Text Generation model, Google Text-to-Speech library\n
        Gratitude to Streamlit, 🤗 Spaces for Deployment & Hosting
    ''')

if __name__ == '__main__':
    main()