package de.softwareapp_hb.filemanager

import android.app.Application
import de.softwareapp_hb.filemanager.data.ContentResolverIncomingSource
import de.softwareapp_hb.filemanager.data.DeleteRequestFactory
import de.softwareapp_hb.filemanager.data.IncomingSource
import de.softwareapp_hb.filemanager.data.MediaStoreDeleter
import de.softwareapp_hb.filemanager.data.StorageProvider
import de.softwareapp_hb.filemanager.domain.OperationNotifier
import de.softwareapp_hb.filemanager.service.ServiceOperationNotifier

/**
 * Application entry point and the app's tiny object graph.
 *
 * There is no dependency-injection framework here on purpose: four long-lived collaborators
 * are built once and handed to the one ViewModel that needs them. Nothing holds a reference
 * to an Activity, so none of this leaks.
 */
class FileManagerApplication : Application() {

    /** Where files live and which backend is in effect. */
    lateinit var storage: StorageProvider
        private set

    /** Keeps the foreground service in step with a running operation. */
    lateinit var notifier: OperationNotifier
        private set

    /** Builds the platform's own delete confirmation, when it can. */
    lateinit var deleteRequests: DeleteRequestFactory
        private set

    /** Reads whatever another app shares in. */
    lateinit var incoming: IncomingSource
        private set

    override fun onCreate() {
        super.onCreate()
        storage = StorageProvider(this)
        notifier = ServiceOperationNotifier(this)
        deleteRequests = MediaStoreDeleter(this).factory()
        incoming = ContentResolverIncomingSource(contentResolver)
    }
}