package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"os/signal"
	"syscall"

	"aytechnology.us/gominecraft/mod/aroz"
	"aytechnology.us/gominecraft/mod/config"

	"aytechnology.us/gominecraft/mod/server"
)

//MCServer should not be exported
var MCServer *server.Handler

//Config should not be exported
var Config *config.Handler

var serverConfig startupConfig

type startupConfig struct {
	Java   string `json:"java"`
	Min    string `json:"min"`
	Max    string `json:"max"`
	Jar    string `json:"jar"`
	Folder string `json:"folder"`
	Arg    string `json:"arg"`
}

var (
	handler *aroz.ArozHandler
)

//Kill signal handler. Do something before the system the core terminate.
func SetupCloseHandler() {
	c := make(chan os.Signal, 2)
	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
	go func() {
		<-c
		log.Println("\r- Shutting down demo module.")
		//Do other things like close database or opened files

		os.Exit(0)
	}()
}

func main() {
	//AROZOS
	//If you have other flags, please add them here

	//Start the aoModule pipeline (which will parse the flags as well). Pass in the module launch information
	handler = aroz.HandleFlagParse(aroz.ServiceInfo{
		Name:     "Minecraft Server",
		Desc:     "GO Minecraft",
		Group:    "Development",
		IconPath: "gominecraft/icon.png",
		Version:  "0.0.1",
		//You can define any path before the actualy html file. This directory (in this case demo/ ) will be the reverse proxy endpoint for this module
		StartDir:     "gominecraft/index.html",
		SupportFW:    true,
		LaunchFWDir:  "gominecraft/index.html",
		SupportEmb:   true,
		LaunchEmb:    "gominecraft/404.html",
		InitFWSize:   []int{720, 480},
		InitEmbSize:  []int{720, 480},
		SupportedExt: []string{},
	})

	//init the startup configuration
	jsonFile, err := os.Open("./startup.json")
	if err != nil {
		fmt.Println(err)
	}
	byte, _ := ioutil.ReadAll(jsonFile)
	json.Unmarshal(byte, &serverConfig)

	MCServer = server.NewHandler(serverConfig.Java, serverConfig.Jar, serverConfig.Min, serverConfig.Max, serverConfig.Arg)
	Config = config.NewHandler(serverConfig.Folder)
	Config.AutoUpdate() //enable auto update
	CrashRestart()
	/*
		go func() {
			i := 0
			for {
				end := MCServer.LenLog()
				log := MCServer.ReadRangeLog(i, end)
				for _, line := range log {
					fmt.Println(line.Log)
				}
				i = end
			}
		}()
	*/
	//To receive kill signal from the System core, you can setup a close handler to catch the kill signal
	//This is not nessary if you have no opened files / database running
	SetupCloseHandler()
	//Any log println will be shown in the core system via STDOUT redirection. But not STDIN.
	log.Println("gominecraft module started. Listening on " + handler.Port)
	webServer("./webroot/", serverConfig.Folder, handler.Port)

}