#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
交互式英语学习应用 - Hugging Face Spaces Docker部署版本
在7860端口提供HTTP服务
"""

import http.server
import socketserver
import os
import sys
import threading
import time

class CORSHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
    """支持CORS的HTTP请求处理器"""
    
    def end_headers(self):
        # 添加CORS头部，允许跨域访问
        self.send_header('Access-Control-Allow-Origin', '*')
        self.send_header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS')
        self.send_header('Access-Control-Allow-Headers', 'Content-Type')
        self.send_header('Cache-Control', 'no-cache, no-store, must-revalidate')
        self.send_header('Pragma', 'no-cache')
        self.send_header('Expires', '0')
        super().end_headers()
    
    def do_OPTIONS(self):
        # 处理预检请求
        self.send_response(200)
        self.end_headers()
    
    def log_message(self, format, *args):
        # 自定义日志格式
        timestamp = time.strftime('%Y-%m-%d %H:%M:%S')
        client_ip = self.address_string()
        print(f"[{timestamp}] {client_ip} - {format % args}")

def check_required_files():
    """检查必要文件是否存在"""
    required_files = ['index.html', 'style.css', 'script.js', 'book_104.json', 'FZKT_GBK.woff']
    missing_files = []
    
    for file in required_files:
        if not os.path.exists(file):
            missing_files.append(file)
    
    if missing_files:
        print(f"❌ 缺少必要文件: {', '.join(missing_files)}")
        return False
    
    print("✅ 所有必要文件检查完成")
    return True

def main():
    """主函数 - 在7860端口启动HTTP服务器"""
    print("🚀 交互式英语学习应用 - Hugging Face Spaces")
    print("=" * 60)
    
    # 检查必要文件
    if not check_required_files():
        return 1
    
    # Hugging Face Spaces要求监听7860端口
    port = int(os.environ.get('PORT', 7860))
    
    try:
        # 创建服务器
        with socketserver.TCPServer(("0.0.0.0", port), CORSHTTPRequestHandler) as httpd:
            print(f"📱 服务器启动成功")
            print(f"🌐 监听端口: {port}")
            print(f"📁 工作目录: {os.getcwd()}")
            print("=" * 60)
            print("🎉 应用已准备就绪!")
            print("=" * 60)
            
            # 启动服务器
            httpd.serve_forever()
            
    except KeyboardInterrupt:
        print("\n\n🛑 服务器已停止")
        return 0
    except Exception as e:
        print(f"❌ 服务器启动失败: {e}")
        return 1

if __name__ == "__main__":
    sys.exit(main())