Converted PreferencUtil to Kotlin class

app/src/main/java/code/name/monkey/retromusic/extensions/ActivityEx.kt

@@ -14,8 +14,13 @@
 
 package code.name.monkey.retromusic.extensions
 
+import androidx.annotation.IdRes
 import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentActivity
+import androidx.fragment.app.FragmentTransaction
 import code.name.monkey.appthemehelper.util.ToolbarContentTintHelper
+import code.name.monkey.retromusic.R
 import com.google.android.material.appbar.MaterialToolbar
 
 fun AppCompatActivity.applyToolbar(toolbar: MaterialToolbar) {
@@ -24,3 +29,37 @@ fun AppCompatActivity.applyToolbar(toolbar: MaterialToolbar) {
     setSupportActionBar(toolbar)
 }
 
+fun FragmentActivity?.addFragment(
+    @IdRes idRes: Int = R.id.container,
+    fragment: Fragment,
+    tag: String? = null,
+    addToBackStack: Boolean = false
+) {
+    val compatActivity = this as? AppCompatActivity ?: return
+    compatActivity.supportFragmentManager.beginTransaction()
+        .apply {
+            add(fragment, tag)
+            setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
+            if (addToBackStack) {
+                addToBackStack(null)
+            }
+            commitNow()
+        }
+}
+
+fun AppCompatActivity.replaceFragment(
+    @IdRes id: Int = R.id.container,
+    fragment: Fragment,
+    tag: String? = null,
+    addToBackStack: Boolean = false
+) {
+    val compatActivity = this ?: return
+    compatActivity.supportFragmentManager.beginTransaction()
+        .apply {
+            replace(id, fragment, tag)
+            if (addToBackStack) {
+                addToBackStack(null)
+            }
+            commit()
+        }
+}

app/src/main/java/code/name/monkey/retromusic/extensions/FragmentExt.kt

@@ -0,0 +1,28 @@
+package code.name.monkey.retromusic.extensions
+
+import android.content.Context
+import android.content.res.Configuration
+import android.os.PowerManager
+import androidx.annotation.IntegerRes
+import androidx.fragment.app.Fragment
+import code.name.monkey.retromusic.util.PreferenceUtilKT
+
+fun Fragment.getIntRes(@IntegerRes int: Int): Int {
+    return resources.getInteger(int)
+}
+
+fun Context.getIntRes(@IntegerRes int: Int): Int {
+    return resources.getInteger(int)
+}
+
+val Context.generalThemeValue
+    get() = PreferenceUtilKT.getGeneralThemeValue(isSystemDarkModeEnabled())
+
+
+fun Context.isSystemDarkModeEnabled(): Boolean {
+    val isBatterySaverEnabled =
+        (getSystemService(Context.POWER_SERVICE) as PowerManager?)?.isPowerSaveMode ?: false
+    val isDarkModeEnabled =
+        (resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES
+    return isBatterySaverEnabled or isDarkModeEnabled
+}

app/src/main/java/code/name/monkey/retromusic/extensions/Preference.kt

@@ -0,0 +1,7 @@
+package code.name.monkey.retromusic.extensions
+
+import android.content.SharedPreferences
+
+fun SharedPreferences.getStringOrDefault(key: String, default: String): String {
+    return getString(key, default) ?: default
+}