AppStorePreferences.kt

package com.straucorp.datastorepreferences

/**
 * @author Andre Straube - Created on 29/08/2021
 */
import android.content.Context
import androidx.datastore.core.DataStore
import androidx.datastore.preferences.SharedPreferencesMigration
import androidx.datastore.preferences.core.Preferences
import androidx.datastore.preferences.core.intPreferencesKey
import androidx.datastore.preferences.core.longPreferencesKey
import androidx.datastore.preferences.core.stringPreferencesKey
import androidx.datastore.preferences.preferencesDataStore
import com.straucorp.datastorepreferences.core.Theme
import com.straucorp.datastorepreferences.delegates.PreferenceDataStore
import kotlinx.coroutines.flow.map
import kotlin.reflect.KProperty


private const val PREF_NAME = "app_settings"

val Context.dataStore by preferencesDataStore(
    name = PREF_NAME,
    produceMigrations = { context ->
        listOf(SharedPreferencesMigration(context, PREF_NAME))
    }
)

/**
 *
 * Exemplo de uso:
 *
 * ```
 * val appPreferences = AppStorePreferences(this)
 * ```
 */
internal class AppStorePreferences(context: Context) {

    private val dataStore: DataStore<Preferences> = context.dataStore

    var launchCount by PreferenceDataStore(
        dataStore = dataStore,
        key = intPreferencesKey(name = "launch_count"),
        defaultValue = 0
    )
    val launchCountFlow = dataStore.data.map { launchCount }

    var lastAskForReview by PreferenceDataStore(
        dataStore = dataStore,
        key = longPreferencesKey(name = "last_ask_for_review"),
        defaultValue = 0L
    )
    val lastAskForReviewFlow = dataStore.data.map { lastAskForReview }

    var selectedTheme by PreferenceDataStore(
        dataStore = dataStore,
        key = stringPreferencesKey(name = Theme.PREF_KEY),
        defaultValue = Theme.SYSTEM.storageKey
    )
    val selectedThemeFlow = dataStore.data.map { selectedTheme }
}