import gradio as gr
import cv2
import tempfile
import os
from PIL import Image

def extract_last_frame(video_file):
    """
    비디오 파일에서 마지막 프레임을 추출하여 이미지로 반환
    """
    if video_file is None:
        return None, "⚠️ Please upload a video file first!"
    
    try:
        # OpenCV로 비디오 열기
        cap = cv2.VideoCapture(video_file)
        
        if not cap.isOpened():
            return None, "❌ Error: Cannot open video file!"
        
        # 비디오 정보 가져오기
        total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
        fps = cap.get(cv2.CAP_PROP_FPS)
        width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
        height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
        duration = total_frames / fps if fps > 0 else 0
        
        if total_frames <= 0:
            cap.release()
            return None, "❌ Error: Video has no frames!"
        
        # 마지막 프레임으로 이동
        cap.set(cv2.CAP_PROP_POS_FRAMES, total_frames - 1)
        
        # 프레임 읽기
        ret, frame = cap.read()
        cap.release()
        
        if not ret:
            return None, "❌ Error: Cannot read the last frame!"
        
        # BGR to RGB 변환
        frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        
        # PIL Image로 변환
        image = Image.fromarray(frame_rgb)
        
        # 정보 로그 생성
        info_log = f"""✅ EXTRACTION COMPLETE!
{'=' * 50}
📹 Video Info:
   • Total Frames: {total_frames:,}
   • FPS: {fps:.2f}
   • Duration: {duration:.2f} seconds
   • Resolution: {width} x {height}
{'=' * 50}
🖼️ Extracted Frame:
   • Frame Number: {total_frames} (Last Frame)
   • Image Size: {width} x {height}
{'=' * 50}
💾 Ready to download!"""
        
        return image, info_log
        
    except Exception as e:
        return None, f"❌ Error: {str(e)}"


# ============================================
# 🎨 Comic Classic Theme - Toon Playground
# ============================================

css = """
/* ===== 🎨 Google Fonts Import ===== */
@import url('https://fonts.googleapis.com/css2?family=Bangers&family=Comic+Neue:wght@400;700&display=swap');

/* ===== 🎨 Comic Classic 배경 - 빈티지 페이퍼 + 도트 패턴 ===== */
.gradio-container {
    background-color: #FEF9C3 !important;
    background-image: 
        radial-gradient(#1F2937 1px, transparent 1px) !important;
    background-size: 20px 20px !important;
    min-height: 100vh !important;
    font-family: 'Comic Neue', cursive, sans-serif !important;
}

/* ===== 허깅페이스 상단 요소 숨김 ===== */
.huggingface-space-header,
#space-header,
.space-header,
[class*="space-header"],
.svelte-1ed2p3z,
.space-header-badge,
.header-badge,
[data-testid="space-header"],
.svelte-kqij2n,
.svelte-1ax1toq,
.embed-container > div:first-child {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    width: 0 !important;
    overflow: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* ===== Footer 완전 숨김 ===== */
footer,
.footer,
.gradio-container footer,
.built-with,
[class*="footer"],
.gradio-footer,
.main-footer,
div[class*="footer"],
.show-api,
.built-with-gradio,
a[href*="gradio.app"],
a[href*="huggingface.co/spaces"] {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
}

/* ===== 메인 컨테이너 ===== */
#col-container { 
    max-width: 1000px; 
    margin: 0 auto; 
}

/* ===== 🎨 헤더 타이틀 - 코믹 스타일 ===== */
.header-text h1 {
    font-family: 'Bangers', cursive !important;
    color: #1F2937 !important;
    font-size: 3.5rem !important;
    font-weight: 400 !important;
    text-align: center !important;
    margin-bottom: 0.5rem !important;
    text-shadow: 
        4px 4px 0px #FACC15,
        6px 6px 0px #1F2937 !important;
    letter-spacing: 3px !important;
    -webkit-text-stroke: 2px #1F2937 !important;
}

/* ===== 🎨 서브타이틀 ===== */
.subtitle {
    text-align: center !important;
    font-family: 'Comic Neue', cursive !important;
    font-size: 1.2rem !important;
    color: #1F2937 !important;
    margin-bottom: 1.5rem !important;
    font-weight: 700 !important;
}

/* ===== 🎨 카드/패널 - 만화 프레임 스타일 ===== */
.gr-panel,
.gr-box,
.gr-form,
.block,
.gr-group {
    background: #FFFFFF !important;
    border: 3px solid #1F2937 !important;
    border-radius: 8px !important;
    box-shadow: 6px 6px 0px #1F2937 !important;
    transition: all 0.2s ease !important;
}

.gr-panel:hover,
.block:hover {
    transform: translate(-2px, -2px) !important;
    box-shadow: 8px 8px 0px #1F2937 !important;
}

/* ===== 🎨 입력 필드 (Textbox) ===== */
textarea, 
input[type="text"], 
input[type="number"] {
    background: #FFFFFF !important;
    border: 3px solid #1F2937 !important;
    border-radius: 8px !important;
    color: #1F2937 !important;
    font-family: 'Comic Neue', cursive !important;
    font-size: 1rem !important;
    font-weight: 700 !important;
    transition: all 0.2s ease !important;
}

textarea:focus, 
input[type="text"]:focus, 
input[type="number"]:focus {
    border-color: #3B82F6 !important;
    box-shadow: 4px 4px 0px #3B82F6 !important;
    outline: none !important;
}

textarea::placeholder {
    color: #9CA3AF !important;
    font-weight: 400 !important;
}

/* ===== 🎨 Primary 버튼 - 코믹 블루 ===== */
.gr-button-primary,
button.primary,
.gr-button.primary {
    background: #3B82F6 !important;
    border: 3px solid #1F2937 !important;
    border-radius: 8px !important;
    color: #FFFFFF !important;
    font-family: 'Bangers', cursive !important;
    font-weight: 400 !important;
    font-size: 1.3rem !important;
    letter-spacing: 2px !important;
    padding: 14px 28px !important;
    box-shadow: 5px 5px 0px #1F2937 !important;
    transition: all 0.1s ease !important;
    text-shadow: 1px 1px 0px #1F2937 !important;
}

.gr-button-primary:hover,
button.primary:hover,
.gr-button.primary:hover {
    background: #2563EB !important;
    transform: translate(-2px, -2px) !important;
    box-shadow: 7px 7px 0px #1F2937 !important;
}

.gr-button-primary:active,
button.primary:active,
.gr-button.primary:active {
    transform: translate(3px, 3px) !important;
    box-shadow: 2px 2px 0px #1F2937 !important;
}

/* ===== 🎨 Secondary 버튼 - 코믹 레드 ===== */
.gr-button-secondary,
button.secondary,
.extract-btn {
    background: #EF4444 !important;
    border: 3px solid #1F2937 !important;
    border-radius: 8px !important;
    color: #FFFFFF !important;
    font-family: 'Bangers', cursive !important;
    font-weight: 400 !important;
    font-size: 1.1rem !important;
    letter-spacing: 1px !important;
    box-shadow: 4px 4px 0px #1F2937 !important;
    transition: all 0.1s ease !important;
    text-shadow: 1px 1px 0px #1F2937 !important;
}

.gr-button-secondary:hover,
button.secondary:hover,
.extract-btn:hover {
    background: #DC2626 !important;
    transform: translate(-2px, -2px) !important;
    box-shadow: 6px 6px 0px #1F2937 !important;
}

.gr-button-secondary:active,
button.secondary:active,
.extract-btn:active {
    transform: translate(2px, 2px) !important;
    box-shadow: 2px 2px 0px #1F2937 !important;
}

/* ===== 🎨 로그 출력 영역 ===== */
.info-log textarea {
    background: #1F2937 !important;
    color: #10B981 !important;
    font-family: 'Courier New', monospace !important;
    font-size: 0.9rem !important;
    font-weight: 400 !important;
    border: 3px solid #10B981 !important;
    border-radius: 8px !important;
    box-shadow: 4px 4px 0px #10B981 !important;
}

/* ===== 🎨 비디오 업로드 영역 ===== */
.video-upload {
    border: 4px dashed #3B82F6 !important;
    border-radius: 12px !important;
    background: #EFF6FF !important;
    transition: all 0.2s ease !important;
}

.video-upload:hover {
    border-color: #EF4444 !important;
    background: #FEF2F2 !important;
}

/* ===== 🎨 아코디언 - 말풍선 스타일 ===== */
.gr-accordion {
    background: #FACC15 !important;
    border: 3px solid #1F2937 !important;
    border-radius: 8px !important;
    box-shadow: 4px 4px 0px #1F2937 !important;
}

.gr-accordion-header {
    color: #1F2937 !important;
    font-family: 'Comic Neue', cursive !important;
    font-weight: 700 !important;
    font-size: 1.1rem !important;
}

/* ===== 🎨 이미지 출력 영역 ===== */
.gr-image,
.image-container {
    border: 4px solid #1F2937 !important;
    border-radius: 8px !important;
    box-shadow: 8px 8px 0px #1F2937 !important;
    overflow: hidden !important;
    background: #FFFFFF !important;
}

/* ===== 🎨 라벨 스타일 ===== */
label,
.gr-input-label,
.gr-block-label {
    color: #1F2937 !important;
    font-family: 'Comic Neue', cursive !important;
    font-weight: 700 !important;
    font-size: 1rem !important;
}

span.gr-label {
    color: #1F2937 !important;
}

/* ===== 🎨 정보 텍스트 ===== */
.gr-info,
.info {
    color: #6B7280 !important;
    font-family: 'Comic Neue', cursive !important;
    font-size: 0.9rem !important;
}

/* ===== 🎨 프로그레스 바 ===== */
.progress-bar,
.gr-progress-bar {
    background: #3B82F6 !important;
    border: 2px solid #1F2937 !important;
    border-radius: 4px !important;
}

/* ===== 🎨 스크롤바 - 코믹 스타일 ===== */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: #FEF9C3;
    border: 2px solid #1F2937;
}

::-webkit-scrollbar-thumb {
    background: #3B82F6;
    border: 2px solid #1F2937;
    border-radius: 0px;
}

::-webkit-scrollbar-thumb:hover {
    background: #EF4444;
}

/* ===== 🎨 선택 하이라이트 ===== */
::selection {
    background: #FACC15;
    color: #1F2937;
}

/* ===== 🎨 링크 스타일 ===== */
a {
    color: #3B82F6 !important;
    text-decoration: none !important;
    font-weight: 700 !important;
}

a:hover {
    color: #EF4444 !important;
}

/* ===== 🎨 Row/Column 간격 ===== */
.gr-row {
    gap: 1.5rem !important;
}

.gr-column {
    gap: 1rem !important;
}

/* ===== 반응형 조정 ===== */
@media (max-width: 768px) {
    .header-text h1 {
        font-size: 2.2rem !important;
        text-shadow: 
            3px 3px 0px #FACC15,
            4px 4px 0px #1F2937 !important;
    }
    
    .gr-button-primary,
    button.primary {
        padding: 12px 20px !important;
        font-size: 1.1rem !important;
    }
    
    .gr-panel,
    .block {
        box-shadow: 4px 4px 0px #1F2937 !important;
    }
}

/* ===== 🎨 다크모드 비활성화 (코믹은 밝아야 함) ===== */
@media (prefers-color-scheme: dark) {
    .gradio-container {
        background-color: #FEF9C3 !important;
    }
}
"""

# Build the Gradio interface
with gr.Blocks(fill_height=True, css=css) as demo:
    
    # HOME Badge
    gr.HTML("""
        <div style="text-align: center; margin: 20px 0 10px 0;">
            <a href="https://www.humangen.ai" target="_blank" style="text-decoration: none;">
                <img src="https://img.shields.io/static/v1?label=🏠 HOME&message=HUMANGEN.AI&color=0000ff&labelColor=ffcc00&style=for-the-badge" alt="HOME">
            </a>
        </div>
    """)
    
    # Header Title
    gr.Markdown(
        """
        # 🎬 VIDEO LAST FRAME EXTRACTOR 🖼️
        """,
        elem_classes="header-text"
    )
    
    gr.Markdown(
        """
        <p class="subtitle">📹 Upload a video and extract the LAST FRAME instantly! 💾</p>
        """,
    )
    
    with gr.Row(equal_height=False):
        # Left column - Input
        with gr.Column(scale=1, min_width=320):
            video_input = gr.Video(
                label="📹 Upload Your Video",
                sources=["upload"],
                elem_classes="video-upload"
            )
            
            extract_btn = gr.Button(
                "🎬 EXTRACT LAST FRAME! 🖼️",
                variant="primary",
                size="lg",
                elem_classes="extract-btn"
            )
            
            with gr.Accordion("📜 Extraction Info", open=True):
                info_log = gr.Textbox(
                    label="",
                    placeholder="Upload a video and click extract to see info...",
                    lines=12,
                    max_lines=20,
                    interactive=False,
                    elem_classes="info-log"
                )
        
        # Right column - Output
        with gr.Column(scale=1, min_width=320):
            output_image = gr.Image(
                label="🖼️ Last Frame",
                type="pil",
                show_label=True,
                height=500,
            )
            
            gr.Markdown(
                """
                <p style="text-align: center; margin-top: 10px; font-weight: 700; color: #1F2937;">
                    💡 Right-click on the image to save, or use the download button!
                </p>
                """
            )

    # Connect the extract button
    extract_btn.click(
        fn=extract_last_frame,
        inputs=[video_input],
        outputs=[output_image, info_log],
    )
    
    # Auto-extract when video is uploaded
    video_input.change(
        fn=extract_last_frame,
        inputs=[video_input],
        outputs=[output_image, info_log],
    )

if __name__ == "__main__":
    demo.launch()