import streamlit as st
from transformers import pipeline
from gtts import gTTS
import os
from PIL import Image

# Load models
def load_models():
    image_to_text = pipeline("image-to-text", model="Salesforce/blip-image-captioning-base")
    storyteller = pipeline(
        "text-generation",
        model="pranavpsv/gpt2-genre-story-generator",
        temperature=0.75,
        max_length=100
    )
    return image_to_text, storyteller

# Process image to text
def generate_caption(image, image_to_text):
    result = image_to_text(image)
    return result[0]["generated_text"] if result else "No caption generated."

# Generate a narrative story using the GPT-2 genre-based story generator
def generate_story(text, storyteller):
    prompt = f"<BOS> <superhero> {text}"
    story = storyteller(prompt, max_length=100, num_return_sequences=1)
    # Clean the generated text by removing the <BOS> <superhero> prefix
    generated_story = story[0]["generated_text"].replace("<BOS> <superhero>", "").strip()
    return generated_story if generated_story else "No story generated."

# Convert text to speech
def text_to_speech(text, filename="output.mp3"):
    tts = gTTS(text)
    tts.save(filename)
    return filename

# Main Streamlit app
def main():
    st.title("AI-Powered Image Captioning and Storytelling")

    image_to_text, storyteller = load_models()

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

    if uploaded_file is not None:
        # Convert uploaded file to a PIL image
        image = Image.open(uploaded_file)
        st.image(image, caption="Uploaded Image", use_container_width=True)

        with st.spinner("Generating caption..."):
            caption = generate_caption(image, image_to_text)
            st.write("### Image Caption:")
            st.write(caption)

        with st.spinner("Generating story..."):
            story = generate_story(caption, storyteller)
            st.write("### Generated Story:")
            st.write(story)

        with st.spinner("Generating speech..."):
            audio_file = text_to_speech(story)
            st.audio(audio_file, format="audio/mp3")

if __name__ == "__main__":
    main()