package com.dklaw.memorize.database

import android.content.Context
import androidx.datastore.core.DataStore
import androidx.datastore.core.IOException
import androidx.datastore.preferences.core.Preferences
import androidx.datastore.preferences.core.booleanPreferencesKey
import androidx.datastore.preferences.core.edit
import androidx.datastore.preferences.preferencesDataStore
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.catch
import kotlinx.coroutines.flow.map

class DataStoreMemorize(private val context : Context) {

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

    private val FILTER_ON = booleanPreferencesKey("FilterOn") // string 저장 키값

    // Datastore 읽기
    // Flow : coroutines.flow import 해야됨
    val valueOfFilter : Flow<Boolean> = context.dataStore.data
        .map {preferences ->
            preferences[FILTER_ON] ?: false
        }



    // Datastore 쓰기
    suspend fun setFilterSwitch(switch : Boolean){
        context.dataStore.edit { preferences->
            preferences[FILTER_ON] = switch
        }

    }

}