erm/app/darktile/cmd/root.go

package cmd

import (
	"context"
	"fmt"
	"image"
	"log/slog"
	"os"

	"anime.bike/slogutil/slogenv"
	"gfx.cafe/util/go/fxplus"
	"github.com/lmittmann/tint"
	"go.uber.org/fx"
	"tuxpa.in/t/erm/app/darktile/config"
	"tuxpa.in/t/erm/app/darktile/gui"
	"tuxpa.in/t/erm/app/darktile/termutil"
	"tuxpa.in/t/erm/app/darktile/version"
)

type Context struct {
	context.Context
}

type Root struct {
	Term      Term      `cmd:"" aliases:"t" default:"1" help:"launch term"`
	ListFonts ListFonts `cmd:"" aliases:"lf" name:"list-fonts" help:"list fonts"`
}

type Term struct {
	ShowVersion bool `name:"version" help:"Show erm version information and exit"`
}

func (r *Term) Run(ctx *Context) error {
	if r.ShowVersion {
		fmt.Println(version.Version)
		return nil
	}

	fxApp := fx.New(
		fxplus.WithLogger,
		fx.Provide(
			func() *slog.Logger {
				return slog.New(tint.NewHandler(os.Stdout, &tint.Options{
					AddSource: true,
					Level:     slogenv.EnvLevel(),
				}))
			},
			fxplus.Context,
			//
			config.NewLark,
			termutil.New,
			gui.New,
		),
		fx.Invoke(func(g *gui.GUI, s fx.Shutdowner, l *slog.Logger) {
			go func() {
				if err := g.Run(s); err != nil && !fxplus.IsShutdownOrCancel(err) {
					l.Error("fatal error running gui", "err", err)
					s.Shutdown(fx.ExitCode(1))
				}
				s.Shutdown(fx.ExitCode(0))
			}()
		}))
	fxApp.Run()
	return nil
}
func getImageFromFilePath(filePath string) (image.Image, error) {
	f, err := os.Open(filePath)
	if err != nil {
		return nil, err
	}
	defer f.Close()
	image, _, err := image.Decode(f)
	return image, err
}