AppDataStoreManager.kt

class AppDataStoreManager private constructor(val context: Application) : AppDataStore {

    private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "settings")

    companion object {

        @Volatile
        private var INSTANCE: AppDataStoreManager? = null


        fun getInstance(context: Application): AppDataStoreManager {
            return INSTANCE ?: synchronized(this) {
                val instance = INSTANCE
                if (instance == null) {
                    INSTANCE = AppDataStoreManager(context)
                }
                INSTANCE!!
            }
        }
    }

    override suspend fun <T> setValue(key: Preferences.Key<T>, value: T) {

        context.applicationContext.dataStore.edit { it[key] = value }
    }

    override suspend fun <T> readValue(key: Preferences.Key<T>): T? {
        return context.applicationContext.dataStore.data.first()[key]
    }


    override suspend fun <T> deletePrefKey(key: Preferences.Key<T>) {
        val dataStore = context.applicationContext.dataStore
        dataStore.edit { it.remove(key) }
    }


}