Prefrence manager Kotlin

PrefManager.kt

import android.annotation.SuppressLint
import android.content.SharedPreferences
import androidx.appcompat.app.AppCompatDelegate


private const val COUNTRY_CODE = "COUNTRY_CODE"
private const val FIRST_TIME = "FIRST_TIME"
private const val THEME = "theme"
private const val PREVIOUS_USER = "PREVIOUS_USER"
class PrefManager(val context: Context, private val preferenceName: String = "eldhopj") {

    /**
     * Creates Shared Preference object from the Context name
     */
    private val preference: SharedPreferences
        get() = context.getSharedPreferences(preferenceName, Context.MODE_PRIVATE)

    /**
     * Creates Shared Preference Editor object for editing preference values
     */
    private val editor: SharedPreferences.Editor
        @SuppressLint("CommitPrefEdits") get() = preference.edit()

    /**
     * Save or Retrieves the data from the preference manager.
     * */

    var countryCode: String
        get() = preference.getString(COUNTRY_CODE, "") ?: ""
        set(value) {
            editor.putString(COUNTRY_CODE, value).apply()
        }

    var previousUser: String?
        get() = preference.getString(PREVIOUS_USER, null)
        set(value) {
            editor.putString(PREVIOUS_USER, value).apply()
        }

    var firstTime: Boolean
        get() = preference.getBoolean(FIRST_TIME, false)
        set(value) {
            editor.putBoolean(FIRST_TIME, value).apply()
        }

    var theme: Int
        get() = preference.getInt(THEME, AppCompatDelegate.MODE_NIGHT_NO)
        set(value) {
            editor.putInt(THEME, value).apply()
        }

    /** Clears only  certian data */
    fun clear() {
        editor.remove(COUNTRY_CODE)
            .remove(THEME).apply()
    }

    /** Clears all data */
    fun clearAll() {
        editor.clear().apply()
    }

}