import gradio as gr
from model import Model
import os
on_huggingspace = os.environ.get("SPACE_AUTHOR_NAME") == "PAIR"


def create_demo(model: Model):

    examples = [
        ["__assets__/canny_videos_edge/butterfly.mp4",
            "white butterfly, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/deer.mp4",
            "oil painting of a deer, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/fox.mp4",
            "wild red fox is walking on the grass, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/girl_dancing.mp4",
            "oil painting of a girl dancing close-up, masterpiece, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/girl_turning.mp4",
            "oil painting of a beautiful girl, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/halloween.mp4",
            "beautiful girl halloween style, a high-quality, detailed, and professional photo"],
        ["__assets__/canny_videos_edge/santa.mp4",
            "a santa claus, a high-quality, detailed, and professional photo"],
    ]

    with gr.Blocks() as demo:
        with gr.Row():
            gr.Markdown('## Text and Canny-Edge Conditional Video Generation')
        with gr.Row():
            gr.HTML(
                """
                <div style="text-align: left; auto;">
                <h2 style="font-weight: 450; font-size: 1rem; margin: 0rem">
                    Description: For performance purposes, our current preview release supports any input videos but caps output videos after 80 frames and the input videos are scaled down before processing.
                </h3>
                </div>
                """)

        with gr.Row():
            with gr.Column():
                input_video = gr.Video(
                    label="Input Video", source='upload', format="mp4", visible=True).style(height="auto")
            with gr.Column():
                prompt = gr.Textbox(label='Prompt')
                run_button = gr.Button(label='Run')
                with gr.Accordion('Advanced options', open=False):
                    watermark = gr.Radio(["Picsart AI Research", "Text2Video-Zero",
                                         "None"], label="Watermark", value='Picsart AI Research')
                    chunk_size = gr.Slider(
                        label="Chunk size", minimum=2, maximum=16, value=2, step=1, visible=not on_huggingspace,
                        info="Number of frames processed at once. Reduce for lower memory usage.")
                    merging_ratio = gr.Slider(
                        label="Merging ratio", minimum=0.0, maximum=0.9, step=0.1, value=0.0, visible=not on_huggingspace,
                        info="Ratio of how many tokens are merged. The higher the more compression (less memory and faster inference).")
            with gr.Column():
                result = gr.Video(label="Generated Video").style(height="auto")

        inputs = [
            input_video,
            prompt,
            chunk_size,
            watermark,
            merging_ratio,
        ]

        gr.Examples(examples=examples,
                    inputs=inputs,
                    outputs=result,
                    fn=model.process_controlnet_canny,
                    # cache_examples=on_huggingspace,
                    cache_examples=False,
                    run_on_click=False,
                    )

        run_button.click(fn=model.process_controlnet_canny,
                         inputs=inputs,
                         outputs=result,)
    return demo