#!/usr/bin/env python3
"""
LQAdminPlatform 服务启动脚本
用于启动 FastAPI 应用服务器
"""
import sys
import os
import socket
import logging

# 添加项目根目录到Python路径
project_root = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, project_root)
sys.path.insert(0, os.path.join(project_root, 'src'))

# 导入配置
from src.app.core.config import config_handler


def check_port(host: str, port: int) -> bool:
    """
    检查端口是否可用
    
    Args:
        host: 主机地址
        port: 端口号
        
    Returns:
        bool: 端口可用返回True，否则返回False
    """
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        try:
            s.bind((host, port))
            return True
        except OSError:
            return False


def find_available_port(host: str, start_port: int = 8000, max_port: int = 8010) -> int:
    """
    查找可用端口
    
    Args:
        host: 主机地址
        start_port: 起始端口
        max_port: 最大端口
        
    Returns:
        int: 可用端口号，如果没有找到返回None
    """
    for port in range(start_port, max_port + 1):
        if check_port(host, port):
            return port
    return None


def main():
    """主函数：启动服务器"""
    import uvicorn
    
    # 配置日志
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
    )
    logger = logging.getLogger(__name__)
    
    # 获取配置
    host = config_handler.get("admin_app", "HOST", "0.0.0.0")
    port = config_handler.get_int("admin_app", "PORT", 8000)
    reload = config_handler.get_bool("admin_app", "RELOAD", True)
    debug = config_handler.get_bool("admin_app", "DEBUG", True)
    logger.info(f"host={host},port={port}")
    
    # 检查端口是否可用
    if not check_port(host, port):
        logger.warning(f"⚠️  端口 {port} 已被占用，正在查找可用端口...")
        available_port = find_available_port(host, port, port + 10)
        if available_port:
            port = available_port
            logger.info(f"✅ 找到可用端口: {port}")
        else:
            logger.error(f"❌ 未找到可用端口 (尝试范围: {port}-{port+10})")
            logger.error("请检查是否有其他服务占用了端口，或手动指定其他端口")
            sys.exit(1)
    
    # 打印启动信息
    logger.info("=" * 70)
    logger.info(f"🚀 正在启动 {config_handler.get('admin_app', 'APP_NAME', '后台管理')} v{config_handler.get('admin_app', 'APP_VERSION', '1.0.0')}")
    logger.info("=" * 70)
    logger.info(f"📍 服务地址: http://{host}:{port}")
    logger.info(f"📚 API文档: http://{host}:{port}/docs")
    logger.info(f"📖 ReDoc文档: http://{host}:{port}/redoc")
    logger.info(f"🔧 调试模式: {'开启' if debug else '关闭'}")
    logger.info(f"🔄 热重载: {'开启' if reload else '关闭'}")
    logger.info("=" * 70)
    
    # 启动服务器
    try:
        # 排除 logs 目录，避免写日志导致热重载进入死循环
        reload_dirs = [os.path.join(project_root, "src")] if reload else None
        
        uvicorn.run(
            "src.app.server.app:app",
            host=host,
            port=port,
            reload=reload,
            reload_dirs=reload_dirs,
            log_level=config_handler.get("admin_app", "LOG_LEVEL", "INFO").lower(),
            access_log=True,
            use_colors=True
        )
    except KeyboardInterrupt:
        logger.info("\n👋 服务已停止")
    except Exception as e:
        logger.error(f"❌ 服务启动失败: {e}", exc_info=True)
        sys.exit(1)


if __name__ == "__main__":
    main()