tview

run_minecraft_server.go

package main

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"os/exec"
	"path/filepath"

	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"
)

var JavaExec = "java"
var ServerJarName = "jenkins.war"
var ServerRunParams = []string{
	"-Xmx1024M",
	"-Xms1024M",
	"-jar",
	ServerJarName,
	"--enable-future-java",
}

func runserver(dest io.Writer) {
	exepath := os.Args[0]
	targetpath := filepath.Dir(exepath)

	fmt.Fprintf(dest, "cd to [%s]\n", targetpath)
	os.Chdir(targetpath)
	cmd := exec.Command(JavaExec, ServerRunParams...)
	cmdReader, _ := cmd.StdoutPipe()
	scanner := bufio.NewScanner(cmdReader)
	go func() {
		for scanner.Scan() {
			fmt.Fprintf(dest, scanner.Text()+"\n")
		}
	}()
	cmd.Start()
}

func main() {
	app := tview.NewApplication()

	logArea := tview.NewTextView()

	var list *tview.List
	statusButton := tview.NewButton("---")
	intervalInput := tview.NewInputField().
		SetLabel("時間(分)").
		SetFieldWidth(10).
		SetAcceptanceFunc(tview.InputFieldInteger).
		SetText("60").
		SetDoneFunc(func(key tcell.Key) {
			app.SetFocus(list)
		})

	list = tview.NewList().
		AddItem("サーバ起動", "", 's', func() {
			runserver(logArea)
		}).
		AddItem("時間変更", "", 't', func() {
			app.SetFocus(intervalInput)
		}).
		AddItem("監視開始", "", 'o', func() {
			logArea.SetText((logArea.GetText(true) + intervalInput.GetText()))
			statusButton.SetLabel("監視中")
		}).
		AddItem("終了", "Press to exit", 'q', func() {
			app.Stop()
		})

	sizeArea := tview.NewFlex().
		AddItem(list, 0, 1, true).
		AddItem(intervalInput, 0, 1, true).
		AddItem(statusButton, 0, 1, true)

	appFrame := tview.NewFlex().
		AddItem(logArea, 0, 3, false).
		AddItem(sizeArea, 0, 2, false)

	if err := app.SetRoot(appFrame, true).SetFocus(list).Run(); err != nil {
		panic(err)
	}
}