package main

import (
	"os"
	"os/exec"
	"os/signal"
	"runtime"

	"github.com/zggsong/FileSync/config"
	"github.com/zggsong/FileSync/server"
)

func main() {
	chChomrDie := make(chan struct{})
	chBackendDie := make(chan struct{})
	go server.Run()
	go startBrowser(chChomrDie, chBackendDie)
	chSingal := listen2Interrupt()
	for {
		select {
		case <-chSingal:
			chBackendDie <- struct{}{}
		case <-chChomrDie:
			os.Exit(0)
		}
	}
}

func startBrowser(chChomrDie chan struct{}, chBackendDie chan struct{}) {
	// chromePath := "C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe"
	chromePath := LocateChrome()
	cmd := exec.Command(chromePath, "--app=http://127.0.0.1:"+config.GetPort()+"/static/index.html")
	cmd.Start()
	go func() {
		<-chBackendDie
		cmd.Process.Kill()
	}()
	cmd.Wait()
	chChomrDie <- struct{}{}
}

//监听中断信号
func listen2Interrupt() <-chan os.Signal {
	chSignal := make(chan os.Signal, 1)
	signal.Notify(chSignal, os.Interrupt)
	return chSignal
}

func LocateChrome() string {

	// If env variable "LORCACHROME" specified and it exists
	if path, ok := os.LookupEnv("LORCACHROME"); ok {
		if _, err := os.Stat(path); err == nil {
			return path
		}
	}

	var paths []string
	switch runtime.GOOS {
	case "darwin":
		paths = []string{
			"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
			"/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary",
			"/Applications/Chromium.app/Contents/MacOS/Chromium",
			"/usr/bin/google-chrome-stable",
			"/usr/bin/google-chrome",
			"/usr/bin/chromium",
			"/usr/bin/chromium-browser",
		}
	case "windows":
		paths = []string{
			os.Getenv("LocalAppData") + "/Google/Chrome/Application/chrome.exe",
			os.Getenv("ProgramFiles") + "/Google/Chrome/Application/chrome.exe",
			os.Getenv("ProgramFiles(x86)") + "/Google/Chrome/Application/chrome.exe",
			os.Getenv("LocalAppData") + "/Chromium/Application/chrome.exe",
			os.Getenv("ProgramFiles") + "/Chromium/Application/chrome.exe",
			os.Getenv("ProgramFiles(x86)") + "/Chromium/Application/chrome.exe",
			os.Getenv("ProgramFiles(x86)") + "/Microsoft/Edge/Application/msedge.exe",
		}
	default:
		paths = []string{
			"/usr/bin/google-chrome-stable",
			"/usr/bin/google-chrome",
			"/usr/bin/chromium",
			"/usr/bin/chromium-browser",
			"/snap/bin/chromium",
		}
	}

	for _, path := range paths {
		if _, err := os.Stat(path); os.IsNotExist(err) {
			continue
		}
		return path
	}
	return ""
}