hermeticum/client/cmd/main.go

package main

import (
	"context"
	"errors"
	"flag"
	"fmt"
	"log"
	"time"

	"github.com/rivo/tview"
	"github.com/vilmibm/hermeticum/proto"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials/insecure"
)

var (
	tls                = flag.Bool("tls", false, "Connection uses TLS if true, else plain TCP")
	caFile             = flag.String("ca_file", "", "The file containing the CA root cert file")
	serverAddr         = flag.String("addr", "localhost:6666", "The server address in the format of host:port")
	serverHostOverride = flag.String("server_host_override", "x.test.example.com", "The server name used to verify the hostname returned by the TLS handshake")
)

func _main() error {
	var opts []grpc.DialOption
	if *tls {
		return errors.New("TODO tls unsupported")
		/*
			if *caFile == "" {
				*caFile = data.Path("x509/ca_cert.pem")
			}
			creds, err := credentials.NewClientTLSFromFile(*caFile, *serverHostOverride)
			if err != nil {
				log.Fatalf("Failed to create TLS credentials %v", err)
			}
			opts = append(opts, grpc.WithTransportCredentials(creds))
		*/
	} else {
		opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
	}

	conn, err := grpc.Dial(*serverAddr, opts...)
	if err != nil {
		return fmt.Errorf("fail to dial: %w", err)
	}
	defer conn.Close()

	client := proto.NewGameWorldClient(conn)

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	pong, err := client.Ping(ctx, &proto.SessionInfo{})
	if err != nil {
		log.Fatalf("%v.Ping -> %v", client, err)
	}

	log.Printf("%#v", pong)

	app := tview.NewApplication()
	pages := tview.NewPages()

	pages.AddPage("splash",
		tview.NewModal().
			AddButtons([]string{"hey. let's go"}).
			SetDoneFunc(func(_ int, _ string) {
				pages.SwitchToPage("main")
				app.ResizeToFullScreen(pages)
			}).SetText("h e r m e t i c u m"),
		true,
		true)

	mainPage := tview.NewList().
		AddItem("jack in", "connect using an existing account", '1', func() {
			pages.SwitchToPage("game")
		}).
		AddItem("rez a toon", "create a new account", '2', nil).
		AddItem("open the hood", "client configuration", '3', nil).
		AddItem("get outta here", "quit the client", '4', func() {
			app.Stop()
		})

	pages.AddPage("main", mainPage, true, false)

	gamePage := tview.NewGrid().
		SetRows(1, 40, 3).
		SetColumns(-1, -1).
		SetBorders(true).
		AddItem(
			tview.NewTextView().SetTextAlign(tview.AlignLeft).SetText("h e r m e t i c u m"),
			0, 0, 1, 1, 1, 1, false).
		AddItem(
			tview.NewTextView().SetTextAlign(tview.AlignRight).SetText("TODO server status"),
			0, 1, 1, 1, 1, 1, false).
		AddItem(
			tview.NewTextView().SetText("TODO game messages"),
			1, 0, 1, 1, 10, 20, false).
		AddItem(
			tview.NewTextView().SetText("TODO detail window"),
			1, 1, 1, 1, 10, 10, false).
		AddItem(
			tview.NewTextView().SetText("TODO input"),
			2, 0, 1, 2, 1, 30, false)

	pages.AddPage("game", gamePage, true, false)

	return app.SetRoot(pages, true).SetFocus(pages).Run()
}

func main() {
	err := _main()
	if err != nil {
		log.Fatal(err.Error())
	}
}