/*
 * SPDX-FileCopyrightText: 2020 The Calyx Institute
 * SPDX-License-Identifier: Apache-2.0
 */

package com.stevesoltys.seedvault.ui

import android.app.Application
import androidx.lifecycle.AndroidViewModel
import com.stevesoltys.seedvault.backend.BackendManager
import com.stevesoltys.seedvault.crypto.KeyManager
import com.stevesoltys.seedvault.permitDiskReads
import com.stevesoltys.seedvault.settings.SettingsManager

abstract class RequireProvisioningViewModel(
    protected val app: Application,
    protected val settingsManager: SettingsManager,
    protected val keyManager: KeyManager,
    protected val backendManager: BackendManager,
) : AndroidViewModel(app) {

    abstract val isRestoreOperation: Boolean

    private val mChooseBackupLocation = MutableLiveEvent<Boolean>()
    internal val chooseBackupLocation: LiveEvent<Boolean> get() = mChooseBackupLocation
    internal fun chooseBackupLocation() = mChooseBackupLocation.setEvent(true)

    internal fun validLocationIsSet() = backendManager.isValidAppPluginSet()

    internal fun recoveryCodeIsSet() = permitDiskReads { keyManager.hasBackupKey() }

    open fun onBackendPropertiesChanged() {
        // noop can be overwritten by sub-classes
    }
}