import os
import random
import base64
import requests
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.common.exceptions import WebDriverException, TimeoutException
from PIL import Image
from io import BytesIO
from datetime import datetime
import gradio as gr
from typing import Tuple
from pathlib import Path

# 스크린샷 캐시 디렉토리 설정
CACHE_DIR = Path("screenshot_cache")
CACHE_DIR.mkdir(exist_ok=True)

import time  # time.sleep() 사용을 위해 추가

def take_screenshot(url):
    """웹사이트 스크린샷 촬영 함수 (로딩 대기 시간 추가)"""
    if url in SCREENSHOT_CACHE:
        return SCREENSHOT_CACHE[url]
        
    if not url.startswith('http'):
        url = f"https://{url}"
        
    options = webdriver.ChromeOptions()
    options.add_argument('--headless')
    options.add_argument('--no-sandbox')
    options.add_argument('--disable-dev-shm-usage')
    options.add_argument('--window-size=1080,720')
    
    try:
        driver = webdriver.Chrome(options=options)
        driver.get(url)
        
        # 명시적 대기: body 요소가 로드될 때까지 대기 (최대 10초)
        try:
            WebDriverWait(driver, 10).until(
                EC.presence_of_element_located((By.TAG_NAME, "body"))
            )
        except TimeoutException:
            print(f"페이지 로딩 타임아웃: {url}")
        
        # 추가 대기 시간 (1초)
        time.sleep(1)
        
        # JavaScript 실행 완료 대기
        driver.execute_script("return document.readyState") == "complete"
        
        # 스크린샷 촬영
        screenshot = driver.get_screenshot_as_png()
        img = Image.open(BytesIO(screenshot))
        buffered = BytesIO()
        img.save(buffered, format="PNG")
        base64_image = base64.b64encode(buffered.getvalue()).decode()
        
        # 캐시에 저장
        SCREENSHOT_CACHE[url] = base64_image
        return base64_image
        
    except WebDriverException as e:
        print(f"스크린샷 촬영 실패: {str(e)} for URL: {url}")
        return None
    except Exception as e:
        print(f"예상치 못한 오류: {str(e)} for URL: {url}")
        return None
    finally:
        if 'driver' in locals():
            driver.quit()

def get_space_card(space: dict, index: int) -> str:
    """스페이스 카드 HTML 생성"""
    space_id = space.get('id', '')
    author, title = space_id.split('/', 1)
    likes = format(space.get('likes', 0), ',')
    sdk = space.get('sdk', 'N/A')
    created = space.get('createdAt', '').split('T')[0]
    url = f"https://huggingface.co/spaces/{space_id}"
    
    screenshot = get_cached_screenshot(url)
    bg_color = f"rgba({random.randint(230,255)}, {random.randint(230,255)}, {random.randint(230,255)}, 0.8)"
    
    return f"""
    <div class="space-card" style='
        border: none; 
        padding: 20px; 
        margin: 10px; 
        border-radius: 15px; 
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        background-image: linear-gradient({bg_color}, {bg_color}), 
            url(data:image/png;base64,{screenshot if screenshot else ''});
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        transition: transform 0.3s ease;
        min-height: 200px;'>
        
        <div style='
            background: rgba(255, 255, 255, 0.95);
            padding: 15px;
            border-radius: 10px;
            backdrop-filter: blur(5px);'>
            <div style='font-size: 1.2em; font-weight: bold; color: #333;'>#{index + 1} {title}</div>
            <p style='margin: 5px 0; color: #666;'>👤 {author}</p>
            <p style='margin: 5px 0; color: #666;'>🛠️ {sdk}</p>
            <p style='margin: 5px 0; color: #666;'>❤️ {likes}</p>
            <p style='margin: 5px 0; color: #666;'>📅 {created}</p>
            <a href='{url}' target='_blank' 
               style='display: inline-block; margin-top: 10px; padding: 5px 10px; 
                      background: #007bff; color: white; text-decoration: none; 
                      border-radius: 5px;'>
                🔗 View Space
            </a>
        </div>
    </div>
    """

def get_trending_spaces(progress=gr.Progress()) -> Tuple[str, str]:
    """트렌딩 스페이스 가져오기"""
    url = "https://huggingface.co/api/spaces"
    
    try:
        progress(0, desc="Fetching spaces data...")
        response = requests.get(url)
        response.raise_for_status()
        spaces = response.json()
        
        # 상위 10개만 선택 (원본 순서 유지)
        top_spaces = spaces[:10]
        
        progress(0.1, desc="Creating gallery...")
        html_content = """
        <div style='padding: 20px; background: #f5f5f5;'>
            <div style='display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;'>
        """
        
        for idx, space in enumerate(top_spaces):
            author, title = space['id'].split('/', 1)
            space_url = f"https://huggingface.co/spaces/{space['id']}"
            likes = format(space.get('likes', 0), ',')
            created = space.get('createdAt', '').split('T')[0]
            
            screenshot = take_screenshot(space_url)
            bg_color = f"rgba({random.randint(230,255)}, {random.randint(230,255)}, {random.randint(230,255)}, 0.8)"
            
            html_content += f"""
            <div class="space-card" style='
                position: relative;
                border: none; 
                padding: 20px; 
                margin: 10px; 
                border-radius: 15px; 
                box-shadow: 0 4px 8px rgba(0,0,0,0.1);
                background-image: linear-gradient({bg_color}, {bg_color}), 
                    url(data:image/png;base64,{screenshot if screenshot else ''});
                background-size: cover;
                background-position: center;
                background-blend-mode: overlay;
                transition: transform 0.3s ease;
                min-height: 250px;
                cursor: pointer;'
                onclick="window.open('{space_url}', '_blank')">
                
                <div style='
                    position: absolute;
                    bottom: 0;
                    left: 0;
                    right: 0;
                    background: rgba(255, 255, 255, 0.95);
                    padding: 10px;
                    border-radius: 0 0 15px 15px;
                    font-size: 0.8em;'>
                    <div style='font-size: 1.2em; font-weight: bold; color: #333; margin-bottom: 5px;'>
                        #{idx + 1} {title}
                    </div>
                    <div style='display: grid; grid-template-columns: repeat(2, 1fr); gap: 5px;'>
                        <div style='color: #666;'>👤 {author}</div>
                        <div style='color: #666;'>🛠️ {space.get('sdk', 'N/A')}</div>
                        <div style='color: #666;'>❤️ {likes}</div>
                        <div style='color: #666;'>📅 {created}</div>
                    </div>
                </div>
            </div>
            """
            
            progress((0.1 + 0.9 * idx/10), desc=f"Loading space {idx+1}/10...")
            
        html_content += "</div></div>"
        
        progress(1.0, desc="Complete!")
        return html_content, "Gallery refresh complete!"
        
    except Exception as e:
        error_html = f'<div style="color: red; padding: 20px;">Error: {str(e)}</div>'
        return error_html, f"Error: {str(e)}"

def create_interface():
    """Gradio 인터페이스 생성"""
    with gr.Blocks(title="Hugging Face Trending Spaces") as interface:
        gr.Markdown("# 🤗 Hugging Face Top 10 Trending Spaces")
        gr.Markdown("Shows top 10 most liked spaces on Hugging Face")
        
        with gr.Row():
            refresh_btn = gr.Button("Refresh Gallery", variant="primary")
        
        gallery_html = gr.HTML()
        status = gr.Markdown("Ready")
        
        refresh_btn.click(
            fn=get_trending_spaces,
            outputs=[gallery_html, status],
            show_progress=True
        )
        
        interface.load(
            fn=get_trending_spaces,
            outputs=[gallery_html, status]
        )
    
    return interface

if __name__ == "__main__":
    try:
        demo = create_interface()
        demo.launch(
            share=True,
            inbrowser=True,
            show_api=False
        )
    except Exception as e:
        print(f"Error launching app: {e}")