#!/usr/bin/env python3
"""
Playwright初始化脚本
确保浏览器正确安装和配置
针对Hugging Face Space环境优化
"""

import subprocess
import sys
import os
from pathlib import Path

def setup_environment():
    """设置环境变量，解决权限问题"""
    # 获取当前工作目录
    current_dir = Path.cwd()
    app_cache_dir = current_dir / ".cache"
    
    # 如果在 /app 目录下，使用 /app/.cache
    if str(current_dir).startswith('/app'):
        cache_dir = app_cache_dir
    else:
        # 否则使用用户主目录
        home_dir = Path.home()
        cache_dir = home_dir / ".cache"
    
    # 确保缓存目录存在并有正确权限
    cache_dir.mkdir(parents=True, exist_ok=True, mode=0o755)
    playwright_cache = cache_dir / "ms-playwright"
    playwright_cache.mkdir(parents=True, exist_ok=True, mode=0o755)
    
    # 强制设置所有相关环境变量
    env_vars = {
        "PLAYWRIGHT_BROWSERS_PATH": str(playwright_cache),
        "PLAYWRIGHT_SKIP_BROWSER_GC": "1",
        "XDG_CACHE_HOME": str(cache_dir),
        "HOME": str(cache_dir.parent),  # 确保 HOME 指向正确位置
        "TMPDIR": str(cache_dir / "tmp"),
        "TMP": str(cache_dir / "tmp"),
        "TEMP": str(cache_dir / "tmp"),
    }
    
    # 创建临时目录
    tmp_dir = cache_dir / "tmp"
    tmp_dir.mkdir(parents=True, exist_ok=True, mode=0o755)
    
    # 设置环境变量
    for key, value in env_vars.items():
        os.environ[key] = value
        print(f"🔧 设置环境变量: {key}={value}")
    
    print(f"📁 缓存目录: {cache_dir}")
    print(f"🎭 Playwright缓存: {playwright_cache}")
    print(f"📂 当前工作目录: {current_dir}")
    
    return str(cache_dir)

def check_playwright_installation():
    """检查playwright是否正确安装"""
    try:
        print("🔍 开始检查 Playwright 安装...")
        
        # 尝试导入playwright
        from playwright.sync_api import sync_playwright
        print("✅ Playwright 模块导入成功")
        
        # 尝试启动浏览器
        print("🌐 尝试启动 Chromium 浏览器...")
        with sync_playwright() as p:
            browser = p.chromium.launch(headless=True)
            print("✅ 浏览器启动成功")
            browser.close()
            print("✅ 浏览器关闭成功")
            
        print("✅ Playwright 浏览器检查通过!")
        return True
        
    except Exception as e:
        print(f"❌ Playwright 浏览器检查失败: {e}")
        print(f"🔍 错误类型: {type(e).__name__}")
        return False

def install_browsers():
    """安装playwright浏览器"""
    try:
        print("🔄 正在安装 Playwright 浏览器...")
        
        # 打印当前环境变量
        print("🔍 当前环境变量:")
        for key in ["PLAYWRIGHT_BROWSERS_PATH", "XDG_CACHE_HOME", "HOME", "TMPDIR"]:
            print(f"  {key}: {os.environ.get(key, 'NOT SET')}")
        
        # 使用更详细的安装命令
        cmd = [sys.executable, "-m", "playwright", "install", "chromium"]
        print(f"🚀 执行命令: {' '.join(cmd)}")
        
        result = subprocess.run(cmd, capture_output=True, text=True, env=os.environ.copy())
        
        print(f"📤 命令返回码: {result.returncode}")
        if result.stdout:
            print(f"📜 标准输出:\n{result.stdout}")
        if result.stderr:
            print(f"⚠️ 错误输出:\n{result.stderr}")
        
        if result.returncode != 0:
            print("❌ 安装命令执行失败")
            return False
            
        print("✅ Playwright 浏览器安装完成!")
        return True
        
    except subprocess.CalledProcessError as e:
        print(f"❌ 浏览器安装失败: {e}")
        return False
    except Exception as e:
        print(f"❌ 安装过程中出现异常: {e}")
        return False

def main():
    """主函数"""
    print("🚀 初始化 Playwright (Hugging Face Space 增强版)...")
    
    # 首先设置环境变量
    cache_dir = setup_environment()
    
    # 检查是否已正确安装
    print("🔍 第一次检查...")
    if check_playwright_installation():
        return True
    
    # 如果检查失败，尝试重新安装
    print("🔧 检测到问题，正在重新安装浏览器...")
    if install_browsers():
        # 重新检查
        print("🔍 安装后重新检查...")
        return check_playwright_installation()
    
    print("😞 所有尝试都失败了")
    return False

if __name__ == "__main__":
    success = main()
    if not success:
        print("❌ Playwright 初始化失败!")
        print("💡 提示：如果仍有问题，可能需要在系统级别安装浏览器依赖")
        print("🔍 调试信息：")
        print(f"  - 当前用户: {os.getuid() if hasattr(os, 'getuid') else 'N/A'}")
        print(f"  - 工作目录: {Path.cwd()}")
        print(f"  - 环境变量 HOME: {os.environ.get('HOME', 'NOT SET')}")
        sys.exit(1)
    print("🎉 Playwright 初始化成功!")