htwkalender/datamanager/backend/core/app.go

package core

import (
	"datamanager/backend/dbx"
	"datamanager/backend/tools/hook"
)

type App interface {
	// DB returns the default app database instance.
	DB() *dbx.DB
	OnTerminate() *hook.Hook[*TerminateEvent]
	ResetBootstrapState() error
}

func NewBaseApp(config BaseAppConfig) App {

	app := &BaseApp{
		isDev:       config.IsDev,
		dataDir:     config.DataDir,
		db:          *dbx.NewDB("neo4j", "password"),
		onTerminate: &hook.Hook[*TerminateEvent]{},
	}
	return app
}

type BaseApp struct {
	// configurable parameters
	isDev       bool
	dataDir     string
	db          dbx.DB
	onTerminate *hook.Hook[*TerminateEvent]
}

func (app *BaseApp) DB() *dbx.DB {
	db := app.db

	return &db
}

func (app *BaseApp) ResetBootstrapState() error {

	if app.DB() != nil {
		if err := app.db.Close(); err != nil {
			return err
		}
	}

	// replace the db instance with nil
	app.db = dbx.DB{}
	return nil
}

func (app *BaseApp) OnTerminate() *hook.Hook[*TerminateEvent] {
	return app.onTerminate
}