import gradio as gr
from lumaai import Lumaai
import requests
import time

def create_client(api_key):
    return Lumaai(auth_token=api_key)

def generate_video(api_key, prompt, aspect_ratio, loop):
    client = create_client(api_key)
    try:
        generation = client.generations.create(
            prompt=prompt,
            aspect_ratio=aspect_ratio,
            loop=loop
        )
        return generation.id, "Generation started..."
    except Exception as e:
        return None, f"Error: {str(e)}"

def poll_generation(api_key, generation_id):
    if not generation_id:
        return "No generation in progress", None
    
    client = create_client(api_key)
    try:
        generation = client.generations.get(id=generation_id)
        return generation.status, generation.assets.thumbnail
    except Exception as e:
        return f"Error: {str(e)}", None

def download_video(api_key, generation_id):
    if not generation_id:
        return None
    
    client = create_client(api_key)
    try:
        generation = client.generations.get(id=generation_id)
        video_url = generation.assets.video
        response = requests.get(video_url, stream=True)
        
        file_name = f"generated_video_{generation_id}.mp4"
        with open(file_name, 'wb') as file:
            file.write(response.content)
        
        return file_name
    except Exception as e:
        return None

with gr.Blocks() as demo:
    gr.Markdown("# Luma AI Video Generation Demo")
    gr.Markdown("Generate videos using Luma AI based on text prompts.")
    
    api_key = gr.Textbox(label="Enter your Luma AI API Key", type="password")
    
    with gr.Row():
        with gr.Column(scale=2):
            prompt = gr.Textbox(label="Prompt")
            aspect_ratio = gr.Dropdown(["16:9", "9:16", "1:1", "4:3", "3:4"], label="Aspect Ratio")
            loop = gr.Checkbox(label="Loop")
            generate_btn = gr.Button("Generate Video")
        
        with gr.Column(scale=3):
            status = gr.Textbox(label="Status")
            thumbnail = gr.Image(label="Thumbnail")
            video = gr.Video(label="Generated Video")
    
    generation_id = gr.State()
    
    def on_generate(api_key, prompt, aspect_ratio, loop):
        gen_id, message = generate_video(api_key, prompt, aspect_ratio, loop)
        return gen_id, message
    
    generate_btn.click(
        on_generate,
        inputs=[api_key, prompt, aspect_ratio, loop],
        outputs=[generation_id, status]
    )
    
    def on_poll(api_key, gen_id):
        status, thumb = poll_generation(api_key, gen_id)
        if status == "completed":
            video_path = download_video(api_key, gen_id)
            return status, thumb, video_path
        return status, thumb, None
    
    poll_btn = gr.Button("Check Status")
    poll_btn.click(
        on_poll,
        inputs=[api_key, generation_id],
        outputs=[status, thumbnail, video]
    )

demo.launch()