#!/usr/bin/env python3
"""
Warp API 服务器
整合所有模块，提供OpenAI兼容的API接口和Token管理Web界面
"""
import json
import threading
from flask import Flask, request, jsonify, Response, stream_with_context, render_template_string, session, redirect, url_for
from loguru import logger

from config import Config
from utils import Utils
from api_service import ApiService

# 初始化日志
Utils.setup_logging()

# 创建Flask应用
app = Flask(__name__)
app.secret_key = 'warp-api-server-secret-key-2024'  # 用于session管理

# 创建API服务
api_service = ApiService()

def check_admin_auth():
    """检查管理员认证"""
    if not Config.require_admin_auth():
        return True
    
    # 检查session中的管理员认证状态
    return session.get('admin_authenticated', False)

def verify_admin_key(admin_key: str) -> bool:
    """验证管理员密钥"""
    if not Config.require_admin_auth():
        return True
    
    return admin_key == Config.get_admin_key()

@app.before_request
def check_auth():
    """请求前鉴权检查"""
    # 跳过管理员认证的端点
    admin_auth_endpoints = ['admin_login', 'admin_auth']
    if request.endpoint in admin_auth_endpoints:
        return
    
    # 管理界面相关端点需要管理员认证
    admin_endpoints = ['index', 'token_status', 'add_tokens', 'batch_login', 'refresh_tokens', 'remove_tokens', 'export_tokens']
    if request.endpoint in admin_endpoints:
        if not check_admin_auth():
            if request.endpoint == 'index':
                return redirect(url_for('admin_login'))
            else:
                return jsonify({"error": "需要管理员认证"}), 401
    
    # API端点需要API密钥认证
    api_endpoints = ['get_models', 'chat_completions']
    if request.endpoint in api_endpoints:
        auth_header = request.headers.get('Authorization')
        if not api_service.authenticate_request(auth_header):
            return jsonify({"error": "未授权访问"}), 401

@app.route('/admin/login')
def admin_login():
    """管理员登录页面"""
    if not Config.require_admin_auth():
        return redirect(url_for('index'))
    
    if check_admin_auth():
        return redirect(url_for('index'))
    
    from web_template import get_admin_login_template
    return render_template_string(get_admin_login_template())

@app.route('/admin/auth', methods=['POST'])
def admin_auth():
    """管理员认证处理"""
    if not Config.require_admin_auth():
        return jsonify({"success": True, "redirect": "/"})
    
    try:
        data = request.get_json()
        admin_key = data.get('admin_key', '')
        
        if verify_admin_key(admin_key):
            session['admin_authenticated'] = True
            logger.info("🔐 管理员认证成功")
            return jsonify({"success": True, "message": "认证成功", "redirect": "/"})
        else:
            logger.warning("⚠️ 管理员认证失败")
            return jsonify({"success": False, "message": "管理员密钥错误"})
            
    except Exception as e:
        logger.error(f"❌ 管理员认证出错: {e}")
        return jsonify({"success": False, "message": "认证失败"}), 500

@app.route('/admin/logout', methods=['POST'])
def admin_logout():
    """管理员登出"""
    session.pop('admin_authenticated', None)
    return jsonify({"success": True, "message": "已登出"})

@app.route('/')
def index():
    """管理页面"""
    from web_template import get_html_template
    return render_template_string(get_html_template())

@app.route(f"/{Config.OPENAI_API_VERSION}/models", methods=['GET'])
def get_models():
    """获取模型列表"""
    return jsonify(api_service.get_models())

@app.route(f"/{Config.OPENAI_API_VERSION}/chat/completions", methods=['POST'])
def chat_completions():
    """聊天完成端点"""
    try:
        request_data = request.get_json()
        if not request_data:
            return jsonify({"error": "无效的请求数据"}), 400
        
        # 检查模型是否有效
        model = request_data.get("model")
        from model_mapper import ModelMapper
        if not ModelMapper.is_valid_model(model):
            return jsonify({"error": f"不支持的模型: {model}"}), 400
        
        stream = request_data.get("stream", False)
        
        if stream:
            # 流式响应
            def generate():
                for chunk in api_service.chat_completion(request_data, stream=True):
                    yield chunk
            
            return Response(
                stream_with_context(generate()),
                content_type='text/event-stream',
                headers={
                    'Cache-Control': 'no-cache',
                    'Connection': 'keep-alive',
                    'Access-Control-Allow-Origin': '*'
                }
            )
        else:
            # 非流式响应
            response_text = ""
            for chunk in api_service.chat_completion(request_data, stream=False):
                response_text = chunk
                break
            
            return Response(
                json.dumps(response_text) if isinstance(response_text, dict) else response_text,
                content_type='application/json'
            )
    
    except Exception as e:
        logger.error(f"❌ 处理聊天请求时出错: {e}")
        return jsonify({"error": f"服务器内部错误: {str(e)}"}), 500

@app.route('/token/status', methods=['GET'])
def token_status():
    """获取token状态"""
    try:
        status = api_service.get_token_status()
        return jsonify(status)
    except Exception as e:
        return jsonify({"success": False, "message": str(e)}), 500

@app.route('/token/add', methods=['POST'])
def add_tokens():
    """添加token"""
    try:
        data = request.get_json()
        tokens = data.get('tokens', [])
        
        result = api_service.add_tokens(tokens)
        return jsonify(result)
        
    except Exception as e:
        return jsonify({"success": False, "message": str(e)}), 500

@app.route('/token/remove', methods=['POST'])
def remove_tokens():
    """删除token"""
    try:
        data = request.get_json()
        refresh_token = data.get('refresh_token')
        
        result = api_service.remove_refresh_token(refresh_token=refresh_token)
        return jsonify(result)
        
    except Exception as e:
        return jsonify({"success": False, "message": str(e)}), 500

@app.route('/token/refresh', methods=['POST'])
def refresh_tokens():
    """刷新所有token"""
    try:
        result = api_service.refresh_all_tokens()
        return jsonify(result)
    except Exception as e:
        return jsonify({"success": False, "message": str(e)}), 500

@app.route('/token/export', methods=['POST'])
def export_tokens():
    """导出refresh token（需要超级管理员密钥验证）"""
    try:
        data = request.get_json()
        super_admin_key = data.get('super_admin_key', '')
        
        result = api_service.export_refresh_tokens(super_admin_key)
        return jsonify(result)
        
    except Exception as e:
        logger.error(f"❌ 导出token时出错: {e}")
        return jsonify({"success": False, "message": str(e)}), 500

@app.route('/login/batch', methods=['POST'])
def batch_login():
    """批量获取refresh token"""
    try:
        data = request.get_json()
        email_url_pairs = data.get('email_url_pairs', [])
        max_workers = data.get('max_workers', 5)
        
        # 转换为字典格式
        email_url_dict = {}
        for pair in email_url_pairs:
            email = pair.get('email', '').strip()
            url = pair.get('url', '').strip()
            
            if email and url:
                email_url_dict[email] = url
        
        if not email_url_dict:
            return jsonify({'success': False, 'message': '没有有效的邮箱和URL对'}), 400
        
        result = api_service.batch_get_refresh_tokens(email_url_dict, max_workers)
        return jsonify(result)
        
    except Exception as e:
        logger.error(f"❌ 批量登录时出错: {e}")
        return jsonify({'success': False, 'message': f'服务器错误: {str(e)}'}), 500

@app.route('/health', methods=['GET'])
def health_check():
    """健康检查端点"""
    return jsonify({
        "status": "healthy", 
        "timestamp": Utils.get_current_timestamp(),
        "version": "2.0.0"
    })

def compile_protobuf_at_startup():
    """启动时编译protobuf"""
    logger.info("🔧 开始编译Protobuf文件...")
    try:
        from protobuf_manager import ProtobufManager
        success = ProtobufManager.validate_protobuf_module()
        if success:
            logger.success("✅ Protobuf模块验证成功")
        else:
            logger.warning("⚠️ Protobuf模块验证失败，但服务仍将启动")
    except Exception as e:
        logger.error(f"❌ 编译Protobuf时出错: {e}")

def main():
    """主函数"""
    config = Config()
    
    print("=" * 80)
    print("🚀 启动 Warp API 服务器 v2.0")
    print("=" * 80)
    print(f"📡 服务器地址: http://localhost:{Config.SERVER_PORT}")
    print(f"🔧 管理界面: http://localhost:{Config.SERVER_PORT}")
    print(f"📚 模型端点: http://localhost:{Config.SERVER_PORT}/{Config.OPENAI_API_VERSION}/models")
    print(f"💬 聊天端点: http://localhost:{Config.SERVER_PORT}/{Config.OPENAI_API_VERSION}/chat/completions")
    print(f"❤️  健康检查: http://localhost:{Config.SERVER_PORT}/health")
    print(f"📝 文件日志: {'启用' if Config.enable_file_logging() else '禁用'}")
    
    # 显示安全配置信息
    if Config.require_admin_auth():
        print(f"🔐 管理员认证: 已启用 (需要 ADMIN_KEY)")
    else:
        print("⚠️  管理员认证: 未启用 (可通过 ADMIN_KEY 环境变量启用)")
    
    if Config.require_super_admin_auth():
        print(f"🔒 超级管理员认证: 已启用 (导出功能需要 SUPER_ADMIN_KEY)")
    else:
        print("⚠️  超级管理员认证: 未启用 (可通过 SUPER_ADMIN_KEY 环境变量启用)")
    
    # 显示环境变量token信息
    env_tokens = Config.get_refresh_tokens()
    if env_tokens:
        print(f"🎯 环境变量Token: 已设置 {len(env_tokens)} 个")
        for i, token in enumerate(env_tokens, 1):
            print(f"   #{i}: {token[:20]}...{token[-8:] if len(token) > 28 else ''}")
    else:
        print("⚠️  环境变量Token: 未设置 (请设置 WARP_REFRESH_TOKEN)")
        print("💡 支持多个token，使用分号(;)分割：token1;token2;token3")
    
    print("-" * 80)
    
    try:
        # 编译protobuf
        compile_protobuf_at_startup()
        
        # 启动后台服务
        logger.info("🔄 启动后台服务...")
        api_service.start_services()
        logger.success("✅ 后台服务启动完成")
        
        logger.info("-" * 80)
        logger.success("🌟 服务器启动完成！")
        if Config.require_admin_auth():
            logger.info(f"🔐 访问管理界面需要管理员密钥: http://localhost:{Config.SERVER_PORT}")
        else:
            logger.info(f"🌐 访问管理界面: http://localhost:{Config.SERVER_PORT}")
        logger.info("-" * 80)
        
        # 启动Flask服务器
        app.run(
            host=Config.SERVER_HOST,
            port=Config.SERVER_PORT,
            debug=False,
            threaded=True
        )
        
    except KeyboardInterrupt:
        logger.info("🛑 接收到停止信号")
    except Exception as e:
        logger.error(f"❌ 服务器启动失败: {e}")
    finally:
        logger.info("🧹 清理资源...")
        api_service.stop_services()
        logger.info("👋 服务器已停止")

if __name__ == "__main__":
    main()