#!/usr/bin/env python3
"""
以调试模式启动API服务器，包含详细日志输出
"""
import subprocess
import sys
import os

def kill_process_on_port(port):
    """查找并终止占用指定端口的进程"""
    if os.name == 'nt':  # Windows
        try:
            # 查找占用端口的PID
            command = f"netstat -aon | findstr :{port}"
            result = subprocess.check_output(command, shell=True, text=True, stderr=subprocess.DEVNULL)
            
            if not result:
                print(f"端口 {port} 未被占用。")
                return

            for line in result.strip().split('\n'):
                parts = line.strip().split()
                if len(parts) >= 5 and parts[3] == 'LISTENING':
                    pid = parts[4]
                    print(f"端口 {port} 被PID {pid} 占用，正在终止...")
                    # 强制终止进程
                    kill_command = f"taskkill /F /PID {pid}"
                    subprocess.run(kill_command, shell=True, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                    print(f"成功终止PID {pid}。")
        except subprocess.CalledProcessError:
            # findstr没找到匹配项时会返回错误码1，这是正常情况
            print(f"端口 {port} 未被占用。")
        except Exception as e:
            print(f"终止进程时出错: {e}")
    else:  # Linux / macOS
        try:
            command = f"lsof -t -i:{port}"
            result = subprocess.check_output(command, shell=True, text=True, stderr=subprocess.DEVNULL)
            pids = result.strip().split('\n')
            for pid in pids:
                if pid:
                    print(f"端口 {port} 被PID {pid} 占用，正在终止...")
                    kill_command = f"kill -9 {pid}"
                    subprocess.run(kill_command, shell=True, check=True)
                    print(f"成功终止PID {pid}。")
        except subprocess.CalledProcessError:
            print(f"端口 {port} 未被占用。")
        except Exception as e:
            print(f"终止进程时出错: {e}")

def start_api_debug():
    """启动API服务器（调试模式），并在启动前清理端口"""
    port = 5000
    print(f"准备启动API服务器，将首先清理端口 {port}...")
    print("="*60)
    
    # 杀死可能存在的旧进程
    kill_process_on_port(port)
    
    print("\n端口清理完成，准备启动新服务...")
    print("="*60)
    
    # 切换到正确的目录
    # 脚本的当前目录
    script_dir = os.path.dirname(os.path.abspath(__file__))
    if os.path.basename(script_dir).lower() == 'server':
        # 如果在server目录下，切换到上级目录
        os.chdir(os.path.dirname(script_dir))
    else:
        # 否则，假定在项目根目录
        os.chdir(script_dir)

    print(f"当前工作目录: {os.getcwd()}")
    
    # 启动命令
    cmd = [
        sys.executable,
        "./server/api.py",
        "--debug",
        "--host", "0.0.0.0",
        "--port", str(port)
    ]
    
    print(f"执行命令: {' '.join(cmd)}")
    print("="*60)
    
    try:
        # 直接运行，输出会实时显示
        # 使用 Popen 以便更好地控制子进程
        process = subprocess.Popen(cmd)
        process.wait() # 等待进程结束
        print(f"API服务器退出，退出码: {process.returncode}")
        
    except KeyboardInterrupt:
        print("\n收到中断信号，停止API服务器...")
        process.terminate() # 确保子进程被终止
        process.wait()
        print("服务器已停止。")
    except Exception as e:
        print(f"启动API服务器失败: {e}")

if __name__ == "__main__":
    start_api_debug()