package main

import (
	_ "embed"
	"fmt"
	"os/exec"
	"strings"
	"time"

	"github.com/getlantern/systray"
)

//go:embed icon.ico
var iconData []byte

func runTray(cfg *Config, log *Logger) {
	sup := NewSupervisor(cfg, log)
	systray.Run(func() {
		systray.SetIcon(iconData)
		systray.SetTooltip("DeepSeek Tray - dsh web 守护")
		trayReady(sup, cfg, log)
	}, func() {
		log.Printf("托盘退出，停止服务")
		sup.Stop()
	})
}

func trayReady(sup *Supervisor, cfg *Config, log *Logger) {
	mStatus := systray.AddMenuItem("状态：初始化…", "当前服务状态")
	mURL := systray.AddMenuItem("打开 Web 界面", "")
	systray.AddSeparator()
	mStart := systray.AddMenuItem("启动服务", "启动 dsh web")
	mStop := systray.AddMenuItem("停止服务", "停止 dsh web")
	mRestart := systray.AddMenuItem("重启服务", "重启 dsh web")
	systray.AddSeparator()
	mAutoStart := systray.AddMenuItemCheckbox("开机自启", "登录 Windows 时自动启动托盘并守护服务（无窗口、不打开浏览器）", isAutoStartEnabled())
	mAutoUpdate := systray.AddMenuItemCheckbox("定期自动更新", "按间隔检查并更新 dsh", cfg.AutoUpdate)
	mUpdateNow := systray.AddMenuItem("立即更新 DSH", "npm install -g @deepseek-ai/dsh@latest")
	systray.AddSeparator()
	mVersion := systray.AddMenuItem("版本：查询中…", "已安装的 DSH 版本")
	mLogs := systray.AddMenuItem("查看日志", "打开日志目录")
	mConfig := systray.AddMenuItem("打开配置文件", "打开 config.json")
	systray.AddSeparator()
	mQuit := systray.AddMenuItem("退出", "停止服务并退出托盘")

	mStop.Disable()

	// 状态刷新：仅在有变化时写 UI（减少 systray 调用）
	go func() {
		ticker := time.NewTicker(3 * time.Second)
		defer ticker.Stop()
		var lastTitle, lastTip, lastURL string
		lastRunning := false
		for range ticker.C {
			st := sup.Status()
			if title := statusTitle(st); title != lastTitle {
				mStatus.SetTitle(title)
				lastTitle = title
			}
			if tip := statusTooltip(st); tip != lastTip {
				mStatus.SetTooltip(tip)
				lastTip = tip
			}
			if u := "打开 Web 界面：" + shortURL(st.URL); u != lastURL {
				mURL.SetTitle(u)
				lastURL = u
			}
			if st.Running != lastRunning {
				if st.Running {
					mStart.Disable()
					mStop.Enable()
				} else {
					mStart.Enable()
					mStop.Disable()
				}
				lastRunning = st.Running
			}
		}
	}()

	// 版本刷新（启动一次 + 每 10 分钟）
	go func() {
		for {
			v := sup.installedVersion()
			if v == "" {
				v = "未知"
			}
			mVersion.SetTitle("版本：" + v)
			time.Sleep(10 * time.Minute)
		}
	}()

	// 菜单事件
	go func() {
		for {
			select {
			case <-mStart.ClickedCh:
				log.Printf("菜单：启动服务")
				sup.Start()
			case <-mStop.ClickedCh:
				log.Printf("菜单：停止服务")
				sup.Stop()
			case <-mRestart.ClickedCh:
				log.Printf("菜单：重启服务")
				sup.Restart()
			case <-mURL.ClickedCh:
				target := sup.Status().URL
				log.Printf("菜单：打开 Web 界面")
				openTarget(target)
			case <-mAutoStart.ClickedCh:
				next := !mAutoStart.Checked()
				if err := setAutoStart(next); err != nil {
					log.Printf("设置开机自启失败: %v", err)
					continue
				}
				if next {
					mAutoStart.Check()
				} else {
					mAutoStart.Uncheck()
				}
				if err := sup.SetAutoStart(next); err != nil {
					log.Printf("保存配置失败: %v", err)
				}
				log.Printf("开机自启 = %v", next)
			case <-mAutoUpdate.ClickedCh:
				next := !mAutoUpdate.Checked()
				if next {
					mAutoUpdate.Check()
				} else {
					mAutoUpdate.Uncheck()
				}
				if err := sup.SetAutoUpdate(next); err != nil {
					log.Printf("保存配置失败: %v", err)
				}
				log.Printf("定期自动更新 = %v", next)
			case <-mUpdateNow.ClickedCh:
				go func() {
					log.Printf("菜单：立即更新（先停服务再更新）")
					if _, err := sup.UpdateAndRestart(); err != nil {
						log.Printf("更新失败: %v", err)
					} else {
						log.Printf("更新完成，服务已恢复运行")
					}
					mVersion.SetTitle("版本：" + sup.installedVersion())
				}()
			case <-mLogs.ClickedCh:
				openTarget(logDir())
			case <-mConfig.ClickedCh:
				openTarget(configPath())
			case <-mQuit.ClickedCh:
				log.Printf("菜单：退出")
				systray.Quit()
				return
			}
		}
	}()

	sup.Start()
	if cfg.AutoUpdate {
		sup.startAutoUpdate()
	}
}

func statusTitle(st Status) string {
	switch {
	case st.Updating:
		return "状态：正在更新…"
	case st.Running:
		return fmt.Sprintf("状态：运行中 (PID %d)", st.PID)
	case st.External:
		return "状态：外部实例运行中"
	default:
		return "状态：已停止"
	}
}

func statusTooltip(st Status) string {
	parts := make([]string, 0, 3)
	if st.Running {
		parts = append(parts, "运行 "+humanDuration(st.Uptime))
	}
	if st.Restarts > 0 {
		parts = append(parts, fmt.Sprintf("自动重启 %d 次", st.Restarts))
	}
	if st.LastError != "" {
		parts = append(parts, "最近错误："+st.LastError)
	}
	if len(parts) == 0 {
		return "服务未运行"
	}
	return strings.Join(parts, "；")
}

// openTarget 用系统默认程序打开 URL 或路径，不经 shell 解析（避免注入面）。
func openTarget(target string) {
	if target == "" {
		return
	}
	var cmd *exec.Cmd
	if strings.HasPrefix(target, "http://") || strings.HasPrefix(target, "https://") {
		cmd = exec.Command("rundll32.exe", "url.dll,FileProtocolHandler", target)
	} else {
		cmd = exec.Command("explorer.exe", target)
	}
	hideWindow(cmd)
	_ = cmd.Start()
}