#!/usr/bin/env python3
"""
Neural Sync 启动器 - 跨平台版本
一键启动前后端服务
"""

import os
import sys
import time
import subprocess
import signal
import platform
from pathlib import Path

# 颜色输出
class Colors:
    GREEN = '\033[0;32m'
    YELLOW = '\033[1;33m'
    RED = '\033[0;31m'
    BLUE = '\033[0;34m'
    NC = '\033[0m'

def print_colored(color, text):
    print(f"{color}{text}{Colors.NC}")

def get_project_dir():
    return Path(__file__).parent

def check_venv():
    venv_dir = get_project_dir() / "venv"
    if not venv_dir.exists():
        print_colored(Colors.RED, "❌ 虚拟环境不存在，请先创建: python -m venv venv")
        sys.exit(1)

def kill_port(port):
    """终止占用指定端口的进程"""
    system = platform.system()
    try:
        if system == "Darwin":  # macOS
            subprocess.run(["lsof", "-ti", f"{port}"],
                         capture_output=True, text=True, check=True)
            result = subprocess.run(["lsof", "-ti", f"{port}"],
                                  capture_output=True, text=True)
            if result.stdout.strip():
                subprocess.run(["kill", "-9"] + result.stdout.strip().split(),
                             capture_output=True)
        elif system == "Linux":
            result = subprocess.run(["fuser", "-k", f"{port}/tcp"],
                                  capture_output=True)
    except:
        pass

def start_backend():
    """启动后端服务"""
    print_colored(Colors.GREEN, "▶️  启动后端服务...")

    project_dir = get_project_dir()
    backend_dir = project_dir / "backend"
    log_dir = project_dir / "logs"
    log_dir.mkdir(exist_ok=True)

    # 激活虚拟环境并启动
    venv_python = get_project_dir() / "venv" / "bin" / "python"
    if platform.system() == "Windows":
        venv_python = get_project_dir() / "venv" / "Scripts" / "python.exe"

    log_file = log_dir / "backend.log"

    process = subprocess.Popen(
        [str(venv_python), "-m", "uvicorn", "app.main:app", "--reload", "--port", "8000"],
        cwd=backend_dir,
        stdout=open(log_file, "w"),
        stderr=subprocess.STDOUT
    )

    # 等待后端启动
    for i in range(10):
        try:
            response = subprocess.run(
                ["curl", "-s", "http://127.0.0.1:8000/docs"],
                capture_output=True, timeout=2
            )
            if response.returncode == 0:
                print_colored(Colors.GREEN, f"✅ 后端启动成功 (PID: {process.pid})")
                return process
        except:
            pass
        time.sleep(1)

    print_colored(Colors.RED, "❌ 后端启动失败")
    return None

def start_frontend():
    """启动前端服务"""
    print_colored(Colors.GREEN, "▶️  启动前端服务...")

    project_dir = get_project_dir()
    frontend_dir = project_dir / "frontend"
    log_dir = project_dir / "logs"
    log_dir.mkdir(exist_ok=True)

    log_file = log_dir / "frontend.log"

    process = subprocess.Popen(
        ["npm", "run", "dev", "--", "--host"],
        cwd=frontend_dir,
        stdout=open(log_file, "w"),
        stderr=subprocess.STDOUT,
        shell=True
    )

    # 等待前端启动
    for i in range(15):
        try:
            response = subprocess.run(
                ["curl", "-s", "http://127.0.0.1:5173"],
                capture_output=True, timeout=2
            )
            if response.returncode == 0:
                print_colored(Colors.GREEN, f"✅ 前端启动成功 (PID: {process.pid})")
                return process
        except:
            pass
        time.sleep(1)

    print_colored(Colors.YELLOW, "⚠️  前端可能还在启动中")
    return process

def main():
    print_colored(Colors.BLUE, "🚀 Neural Sync 启动器")
    print("=" * 30)

    project_dir = get_project_dir()
    os.chdir(project_dir)

    # 检查环境
    check_venv()

    # 清理端口
    print_colored(Colors.BLUE, "🧹 清理端口...")
    kill_port(8000)
    kill_port(5173)
    time.sleep(1)

    # 启动服务
    backend_proc = start_backend()
    if not backend_proc:
        sys.exit(1)

    frontend_proc = start_frontend()

    # 保存 PID
    log_dir = project_dir / "logs"
    (log_dir / "backend.pid").write_text(str(backend_proc.pid))
    (log_dir / "frontend.pid").write_text(str(frontend_proc.pid))

    # 显示结果
    print()
    print_colored(Colors.GREEN, "🎉 所有服务启动完成！")
    print("=" * 30)
    print(f"  后端: {Colors.YELLOW}http://127.0.0.1:8000{Colors.NC}")
    print(f"  前端: {Colors.YELLOW}http://127.0.0.1:5173{Colors.NC}")
    print(f"  API 文档: {Colors.YELLOW}http://127.0.0.1:8000/docs{Colors.NC}")
    print()
    print("📝 日志文件:")
    print("  后端: logs/backend.log")
    print("  前端: logs/frontend.log")
    print()
    print_colored(Colors.YELLOW, "💡 按 Ctrl+C 停止所有服务，或运行: python stop.py")

    # 等待中断信号
    def signal_handler(sig, frame):
        print_colored(Colors.YELLOW, "\n🛑 正在停止服务...")
        backend_proc.terminate()
        frontend_proc.terminate()
        print_colored(Colors.GREEN, "🎉 所有服务已停止")
        sys.exit(0)

    signal.signal(signal.SIGINT, signal_handler)

    # 保持运行
    try:
        backend_proc.wait()
    except KeyboardInterrupt:
        signal_handler(None, None)

if __name__ == "__main__":
    main()