arcast/apps.go

package arcast

import (
	"embed"
	"encoding/json"
	"io/fs"
	"path/filepath"

	"forge.cadoles.com/arcad/arcast/pkg/server"
	"github.com/pkg/errors"
)

var (
	DefaultApps []server.App
	//go:embed apps/main/build/**
	appsFS embed.FS
)

func init() {
	defaultApps, err := loadApps(
		"apps/main/build",
	)
	if err != nil {
		panic(errors.WithStack(err))
	}

	DefaultApps = defaultApps
}

func loadApps(appDirs ...string) ([]server.App, error) {
	apps := make([]server.App, 0)

	for _, dir := range appDirs {
		rawManifest, err := fs.ReadFile(appsFS, filepath.Join(dir, "arcast-app.json"))
		if err != nil {
			return nil, errors.WithStack(err)
		}

		var app server.App

		if err := json.Unmarshal(rawManifest, &app); err != nil {
			return nil, errors.WithStack(err)
		}

		fs, err := fs.Sub(appsFS, dir)
		if err != nil {
			return nil, errors.WithStack(err)
		}

		app.FS = fs

		apps = append(apps, app)
	}

	return apps, nil
}