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import os
import uuid
import moviepy.editor as mp
from PIL import Image
import gradio as gr

# -------------------------------
# ๋‚ด๋ถ€ ํ•จ์ˆ˜๋“ค (๋™์˜์ƒ ์ฒ˜๋ฆฌ ๋“ฑ)
# -------------------------------
global_logs = []

def add_log(message: str):
    global_logs.append(message)
    print(message)

def parse_time_to_seconds(time_str: str):
    try:
        h, m, s = time_str.split(":")
        return int(h) * 3600 + int(m) * 60 + float(s)
    except Exception:
        return 0.0

def generate_thumbnail(video_clip, time_point):
    try:
        frame = video_clip.get_frame(time_point)
        return Image.fromarray(frame)
    except Exception as e:
        add_log(f"[ERROR] ์ธ๋„ค์ผ ์ƒ์„ฑ ์‹คํŒจ: {e}")
        frame = video_clip.get_frame(0)
        return Image.fromarray(frame)

def adjust_aspect_ratio(clip, option):
    if option == "์›๋ณธ ์œ ์ง€":
        return clip
    if option == "์œ ํŠœ๋ธŒ (16:9)":
        target_ratio = 16/9
    elif option == "์‡ผ์ธ /๋ฆด์Šค (9:16)":
        target_ratio = 9/16
    elif option == "์ •์‚ฌ๊ฐํ˜• (1:1)":
        target_ratio = 1.0
    elif option == "์ธ์Šคํƒ€๊ทธ๋žจ (4:5)":
        target_ratio = 4/5
    elif option == "ํด๋ž˜์‹ (4:3)":
        target_ratio = 4/3
    else:
        return clip

    width, height = clip.size
    current_ratio = width/height
    if current_ratio > target_ratio:
        new_width = int(height * target_ratio)
        new_height = height
    else:
        new_width = width
        new_height = int(width / target_ratio)
    return clip.crop(x_center=width/2, y_center=height/2, width=new_width, height=new_height)

def process_video(video,
                  start_time_str,
                  end_time_str,
                  platform_option,
                  frame_rate_factor,
                  speed_factor,
                  repeat_count,
                  resolution_scale):
    global global_logs
    global_logs = []
    add_log("๐ŸŽฅ [LOG 1] ๋น„๋””์˜ค ์—…๋กœ๋“œ ๋ฐ ์ฒ˜๋ฆฌ ์‹œ์ž‘")
    video_path = video if isinstance(video, str) else video.name
    try:
        input_video = mp.VideoFileClip(video_path)
    except Exception as e:
        add_log(f"[ERROR] ๋น„๋””์˜ค ๋กœ๋“œ ์‹คํŒจ: {e}")
        return None, None, "\n".join(global_logs)
    duration = input_video.duration
    add_log(f"[LOG 3] ์˜์ƒ ์žฌ์ƒ์‹œ๊ฐ„: {duration:.2f}์ดˆ")
    start_sec = parse_time_to_seconds(start_time_str)
    end_sec = parse_time_to_seconds(end_time_str)
    if start_sec < 0:
        start_sec = 0
    if end_sec <= 0 or end_sec > duration:
        end_sec = duration
    if start_sec >= end_sec:
        start_sec, end_sec = 0, duration
    add_log(f"[LOG 5] ์‹œ๊ฐ„ ์„ค์ •: {start_sec}์ดˆ ~ {end_sec}์ดˆ")
    clip = input_video.subclip(start_sec, end_sec)
    add_log(f"[LOG 7] ํ”Œ๋žซํผ ๋น„์œจ ์ ์šฉ: {platform_option}")
    clip = adjust_aspect_ratio(clip, platform_option)
    if abs(resolution_scale - 1.0) > 1e-3:
        add_log(f"[LOG 7-1] ํ•ด์ƒ๋„ ์ถ•์†Œ: {resolution_scale*100:.0f}%")
        clip = clip.resize(resolution_scale)
    if abs(speed_factor - 1.0) > 1e-3:
        add_log(f"[LOG 8] ์žฌ์ƒ์†๋„ {speed_factor}๋ฐฐ ์ ์šฉ")
        clip = clip.fx(mp.vfx.speedx, speed_factor)
    original_fps = clip.fps
    target_fps = original_fps * frame_rate_factor
    add_log(f"[LOG 9] FPS: {target_fps:.2f} (์›๋ณธ {original_fps})")
    clip = clip.set_fps(target_fps)
    add_log(f"[LOG 10] GIF ๋ฐ˜๋ณต ํšŸ์ˆ˜: {repeat_count} (0: ๋ฌดํ•œ)")
    final_clip = clip
    output_filename = f"temp_{uuid.uuid4().hex}.gif"
    try:
        # ImageMagick์œผ๋กœ ์ƒ์„ฑ ์‹œ loop ํŒŒ๋ผ๋ฏธํ„ฐ๊ฐ€ ์ ์šฉ๋จ.
        loop_param = 0 if int(repeat_count) == 0 else int(repeat_count)
        final_clip.write_gif(output_filename, fps=target_fps, loop=loop_param)
        add_log(f"[LOG 12] GIF ์ƒ์„ฑ ์™„๋ฃŒ: {output_filename}, loop={loop_param}")
    except Exception as e:
        add_log(f"[ERROR] GIF ์ƒ์„ฑ ์‹คํŒจ: {e}")
        return None, None, "\n".join(global_logs)
    return output_filename, output_filename, "\n".join(global_logs)

def update_thumbnails(video, start_time_str, end_time_str):
    video_path = video if isinstance(video, str) else video.name
    try:
        input_video = mp.VideoFileClip(video_path)
    except Exception as e:
        add_log(f"[ERROR] ๋น„๋””์˜ค ๋กœ๋“œ ์‹คํŒจ: {e}")
        return None, None
    duration = input_video.duration
    start_sec = parse_time_to_seconds(start_time_str)
    end_sec = parse_time_to_seconds(end_time_str)
    if start_sec < 0:
        start_sec = 0
    if end_sec <= 0 or end_sec > duration:
        end_sec = duration
    if start_sec >= end_sec:
        start_sec, end_sec = 0, duration
    start_thumb = generate_thumbnail(input_video, start_sec)
    end_thumb = generate_thumbnail(input_video, end_sec)
    return start_thumb, end_thumb

# -------------------------------
# Custom CSS (HTML/CSS ๊ธฐ๋ฐ˜ ์ƒˆ UI)
# -------------------------------
custom_css = """
body {
  font-family: 'Arial', sans-serif;
  background-color: #eef2f7;
}
.custom-title {
  font-size: 2.8em;
  text-align: center;
  font-weight: bold;
  margin: 20px 0;
  color: #2c3e50;
}
.custom-user-guide {
  font-size: 1.2em;
  text-align: center;
  margin-bottom: 30px;
  color: #34495e;
}
.frame {
  border: 2px solid #888;
  border-radius: 20px;
  padding: 20px;
  background-color: #fff;
  margin: 10px;
  box-shadow: 3px 3px 10px rgba(0,0,0,0.1);
}
.row-container {
  display: flex;
  justify-content: space-between;
}
.column {
  flex: 1;
  margin: 10px;
}
.full-width {
  width: 100%;
  margin: 10px 0;
}
input, button, select {
  font-size: 1em;
}
.emoji {
  font-size: 1.2em;
  margin-right: 5px;
}
"""

# -------------------------------
# Gradio UI ๊ตฌ์„ฑ (HTML/CSS ์ปค์Šคํ„ฐ๋งˆ์ด์ง•)
# -------------------------------
with gr.Blocks(css=custom_css, title="์˜์ƒ -> GIF ๋ณ€ํ™˜ ์„œ๋น„์Šค") as demo:
    # ์ œ๋ชฉ & ์‚ฌ์šฉ์ž ๊ฐ€์ด๋“œ
    gr.HTML("<div class='custom-title'>๐ŸŽฌ ์˜์ƒ์„ GIF๋ณ€ํ™˜ํ•˜๊ธฐ ๐ŸŽž๏ธ</div>")
    gr.HTML("<div class='custom-user-guide'>๐Ÿ‘‰ ์‚ฌ์šฉ๊ฐ€์ด๋“œ: ์ขŒ์ธก '์ž…๋ ฅ๋ถ€'์—์„œ ์˜์ƒ์„ ์—…๋กœ๋“œํ•˜๊ณ  ์˜ต์…˜์„ ์„ ํƒํ•œ ํ›„,<br>"
            "ํ•˜๋‹จ '์ž‘์—… ์ธ๋„ค์ผ๋ฏธ๋ฆฌ๋ณด๊ธฐ'์—์„œ ์‹œ์ž‘/์ข…๋ฃŒ ์‹œ๊ฐ„์„ ์„ค์ •ํ•˜๊ณ  ์ธ๋„ค์ผ์„ ํ™•์ธํ•˜์„ธ์š”. <br>"
            "์šฐ์ธก '์ถœ๋ ฅ๋ถ€'์—์„œ ์ƒ์„ฑ๋œ GIF๋ฅผ ๋ฏธ๋ฆฌ ๋ณด๊ณ  ๋‹ค์šด๋กœ๋“œํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๐Ÿ˜Š</div>")
    
    # ์ฒซ๋ฒˆ์งธ ํ–‰: ์ž…๋ ฅ๋ถ€ (์ขŒ์ธก) / ์ถœ๋ ฅ๋ถ€ (์šฐ์ธก)
    with gr.Row(elem_classes="row-container"):
        with gr.Column(elem_classes="column"):
            with gr.Group(elem_classes="frame"):
                gr.Markdown("### ๐Ÿ“ฅ ์ž…๋ ฅ๋ถ€")
                video_input = gr.Video(label="์˜์ƒ ์—…๋กœ๋“œ", show_label=True)
                platform_option = gr.Radio(
                    label="ํ•ด์ƒ๋„/๋น„์œจ ์„ ํƒ",
                    choices=["์›๋ณธ ์œ ์ง€", "์œ ํŠœ๋ธŒ (16:9)", "์‡ผ์ธ /๋ฆด์Šค (9:16)", "์ •์‚ฌ๊ฐํ˜• (1:1)", "์ธ์Šคํƒ€๊ทธ๋žจ (4:5)", "ํด๋ž˜์‹ (4:3)"],
                    value="์›๋ณธ ์œ ์ง€"
                )
                resolution_scale_slider = gr.Slider(label="์ถœ๋ ฅ ํ•ด์ƒ๋„ ์ถ•์†Œ ๋น„์œจ (0.1 ~ 1.0)", 
                                                    minimum=0.1, maximum=1.0, step=0.1, value=1.0)
                frame_rate_slider = gr.Slider(label="ํ”„๋ ˆ์ž„ ๋ ˆ์ดํŠธ ๋ฐฐ์œจ ์กฐ์ ˆ (0.1 ~ 1.0)", 
                                              minimum=0.1, maximum=1.0, step=0.1, value=1.0)
                speed_slider = gr.Slider(label="์žฌ์ƒ ์†๋„ ์กฐ์ ˆ (0.5 ~ 5.0)", 
                                         minimum=0.5, maximum=5.0, step=0.1, value=1.0)
                repeat_slider = gr.Slider(label="GIF ๋ฐ˜๋ณต ํšŸ์ˆ˜ (0: ๋ฌดํ•œ๋ฐ˜๋ณต, 1~10)", 
                                          minimum=0, maximum=10, step=1, value=0)
        with gr.Column(elem_classes="column"):
            with gr.Group(elem_classes="frame"):
                gr.Markdown("### ๐Ÿ“ค ์ถœ๋ ฅ๋ถ€")
                gif_preview_output = gr.Image(label="GIF ๊ฒฐ๊ณผ ๋ฏธ๋ฆฌ๋ณด๊ธฐ")
                download_output = gr.File(label="GIF ๋‹ค์šด๋กœ๋“œ")
    
    # ๋‘๋ฒˆ์งธ ํ–‰: ์ž‘์—… ์ธ๋„ค์ผ๋ฏธ๋ฆฌ๋ณด๊ธฐ ์˜์—ญ (์ „์ฒด ๋„ˆ๋น„)
    with gr.Group(elem_classes="frame full-width"):
        gr.Markdown("### ๐Ÿ–ผ๏ธ ์ž‘์—… ์ธ๋„ค์ผ๋ฏธ๋ฆฌ๋ณด๊ธฐ")
        with gr.Row():
            start_time_tb = gr.Textbox(label="์‹œ์ž‘ ์‹œ๊ฐ„ (์˜ˆ: 00:00:05)", value="00:00:00")
            end_time_tb = gr.Textbox(label="์ข…๋ฃŒ ์‹œ๊ฐ„ (์˜ˆ: 00:00:10)", value="00:00:05")
        with gr.Row():
            start_thumb_output = gr.Image(label="์‹œ์ž‘ ์ธ๋„ค์ผ")
            end_thumb_output = gr.Image(label="์ข…๋ฃŒ ์ธ๋„ค์ผ")
        generate_button = gr.Button("โœจ GIF ์ƒ์„ฑํ•˜๊ธฐ")

    logs_output = gr.Textbox(label="๐Ÿ“ ์ž‘์—… ๋กœ๊ทธ", lines=10)

    # ์ด๋ฒคํŠธ ๋ฐ”์ธ๋”ฉ
    # ์˜์ƒ ์—…๋กœ๋“œ, ์‹œ์ž‘/์ข…๋ฃŒ ์‹œ๊ฐ„ ๋ณ€๊ฒฝ ์‹œ ์ธ๋„ค์ผ ์—…๋ฐ์ดํŠธ
    start_time_tb.change(fn=update_thumbnails,
                         inputs=[video_input, start_time_tb, end_time_tb],
                         outputs=[start_thumb_output, end_thumb_output])
    end_time_tb.change(fn=update_thumbnails,
                       inputs=[video_input, start_time_tb, end_time_tb],
                       outputs=[start_thumb_output, end_thumb_output])
    video_input.change(fn=update_thumbnails,
                       inputs=[video_input, start_time_tb, end_time_tb],
                       outputs=[start_thumb_output, end_thumb_output])
    # GIF ์ƒ์„ฑ ๋ฒ„ํŠผ ํด๋ฆญ ์‹œ ์ „์ฒด ์ฒ˜๋ฆฌ (์ž…๋ ฅ๋ถ€ + ์ž‘์—… ์ธ๋„ค์ผ๋ฏธ๋ฆฌ๋ณด๊ธฐ)
    generate_button.click(fn=process_video,
                          inputs=[video_input, start_time_tb, end_time_tb,
                                  platform_option, frame_rate_slider, speed_slider, repeat_slider,
                                  resolution_scale_slider],
                          outputs=[gif_preview_output, download_output, logs_output])

demo.launch()