feat: allow user to set custom preloading amount

app/src/main/java/com/github/libretube/helpers/PlayerHelper.kt

@@ -53,6 +53,7 @@ import kotlinx.coroutines.runBlocking
 import java.util.Locale
 import java.util.concurrent.Executors
 import kotlin.math.absoluteValue
+import kotlin.math.max
 import kotlin.math.roundToInt
 
 object PlayerHelper {
@@ -543,7 +544,7 @@ object PlayerHelper {
             .setBackBuffer(1000 * 60 * 3, true)
             .setBufferDurationsMs(
                 MINIMUM_BUFFER_DURATION,
-                bufferingGoal,
+                max(bufferingGoal, MINIMUM_BUFFER_DURATION),
                 DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_MS,
                 DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS
             )

app/src/main/java/com/github/libretube/ui/base/BasePreferenceFragment.kt

@@ -1,5 +1,7 @@
 package com.github.libretube.ui.base
 
+import android.text.InputType
+import android.widget.Toast
 import androidx.preference.EditTextPreference
 import androidx.preference.ListPreference
 import androidx.preference.MultiSelectListPreference
@@ -8,6 +10,7 @@ import androidx.preference.PreferenceFragmentCompat
 import com.github.libretube.R
 import com.github.libretube.databinding.DialogTextPreferenceBinding
 import com.github.libretube.ui.activities.SettingsActivity
+import com.github.libretube.ui.preferences.EditNumberPreference
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 
 /**
@@ -76,11 +79,21 @@ abstract class BasePreferenceFragment : PreferenceFragmentCompat() {
             is EditTextPreference -> {
                 val binding = DialogTextPreferenceBinding.inflate(layoutInflater)
                 binding.input.setText(preference.text)
+
+                if (preference is EditNumberPreference) {
+                    binding.input.inputType = InputType.TYPE_NUMBER_FLAG_SIGNED
+                }
+
                 MaterialAlertDialogBuilder(requireContext())
                     .setTitle(preference.title)
                     .setView(binding.root)
                     .setPositiveButton(android.R.string.ok) { _, _ ->
                         val newValue = binding.input.text.toString()
+                        if (preference is EditNumberPreference && newValue.any { !it.isDigit() }) {
+                            Toast.makeText(context, R.string.invalid_input, Toast.LENGTH_LONG).show()
+                            return@setPositiveButton
+                        }
+
                         if (preference.callChangeListener(newValue)) {
                             preference.text = newValue
                         }

app/src/main/java/com/github/libretube/ui/preferences/EditNumberPreference.kt

@@ -0,0 +1,12 @@
+package com.github.libretube.ui.preferences
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.preference.EditTextPreference
+import com.github.libretube.ui.base.BasePreferenceFragment
+
+/**
+ * [EditTextPreference] that only allows numeric input.
+ * The actual functionality is done in [BasePreferenceFragment].
+ */
+class EditNumberPreference(context: Context, attributeSet: AttributeSet?): EditTextPreference(context, attributeSet)

app/src/main/res/values/array.xml

@@ -200,21 +200,6 @@
         <item>6</item>
     </string-array>
 
-    <string-array name="bufferingGoal">
-        <item>50s</item>
-        <item>100s</item>
-        <item>200s</item>
-        <item>300s</item>
-        <item>450s</item>
-    </string-array>
-    <string-array name="bufferingGoalValues">
-        <item>50</item>
-        <item>100</item>
-        <item>200</item>
-        <item>300</item>
-        <item>450</item>
-    </string-array>
-
     <string-array name="playerVideoFormat">
         <item>WEBM</item>
         <item>MPEG_4</item>

app/src/main/res/xml/player_settings.xml

@@ -203,11 +203,9 @@
 
     <PreferenceCategory app:title="@string/misc">
 
-        <ListPreference
+        <com.github.libretube.ui.preferences.EditNumberPreference
             android:icon="@drawable/ic_time"
             app:defaultValue="50"
-            app:entries="@array/bufferingGoal"
-            app:entryValues="@array/bufferingGoalValues"
             app:key="buffering_goal"
             app:summary="@string/buffering_goal_summary"
             app:title="@string/buffering_goal" />