Added setting to change day/date format for canteen screen

app/src/main/java/com/denizk0461/weserplaner/adapter/DropdownAdapter.kt

@@ -11,7 +11,7 @@ import com.denizk0461.weserplaner.R
  * @param context   context reference
  * @param items     list of texts to display
  */
-class DropdownAdapter(context: Context, items: MutableList<String>)
+class DropdownAdapter(context: Context, items: List<String>)
     : ArrayAdapter<String>(context, R.layout.item_dropdown, items) {
 
     private val noOpFilter = object : Filter() {

app/src/main/java/com/denizk0461/weserplaner/db/AppRepository.kt

@@ -439,6 +439,16 @@ class AppRepository(app: Application) {
         setPreference(SettingsPreferences.SELECTED_TIMETABLE, newValue)
     }
 
+    /**
+     * User-selected timetable to display.
+     */
+    fun getPreferenceCanteenDate(): Int = getIntPreference(
+        SettingsPreferences.CANTEEN_DATE_PREFERENCE,
+    )
+    fun setPreferenceCanteenDate(newValue: Int) {
+        setPreference(SettingsPreferences.CANTEEN_DATE_PREFERENCE, newValue)
+    }
+
     /**
      * This value determines which navigation graph will be used for app navigation.
      */

app/src/main/java/com/denizk0461/weserplaner/fragment/CanteenFragment.kt

@@ -230,7 +230,12 @@ class CanteenFragment : AppFragment<FragmentCanteenBinding>() {
 
         // Set up TabLayoutMediator to populate tabs
         TabLayoutMediator(binding.dayTabLayout, binding.viewPager) { tab, position ->
-            tab.text = dates[position].run { "$day, $date" }
+            tab.text = dates[position].let { d -> when (viewModel.preferenceCanteenDate) {
+                0 -> "${d.day.shortenDay()}, ${d.date}"
+                1 -> "${d.day}, ${d.date}"
+                2 -> d.date
+                else -> d.day // 3
+            }}
         }.attach()
 
         // Set extended FAB to extend when the page is changed
@@ -263,6 +268,23 @@ class CanteenFragment : AppFragment<FragmentCanteenBinding>() {
         }
     }
 
+    /**
+     * Shortens a German day name to its shortened form, followed by a period. Example:
+     * Montag -> Mo.
+     *
+     * @receiver    day name to shorten
+     * @return      shortened day name with period following it
+     */
+    private fun String.shortenDay(): String = when (this) {
+        "Montag" -> "Mo."
+        "Dienstag" -> "Di."
+        "Mittwoch" -> "Mi."
+        "Donnerstag" -> "Do."
+        "Freitag" -> "Fr."
+        "Samstag" -> "Sa."
+        else -> "So."
+    }
+
     // Invalidate the view binding
     override fun onDestroyView() {
         super.onDestroyView()

app/src/main/java/com/denizk0461/weserplaner/fragment/SettingsFragment.kt

@@ -218,6 +218,22 @@ class SettingsFragment : AppFragment<FragmentSettingsBinding>() {
             }
         }
 
+        val dateAdapter = DropdownAdapter(
+            context,
+            context.resources.getStringArray(R.array.settings_dates).toList(),
+        )
+
+        binding.autoCompleteDates.setAdapter(dateAdapter)
+        binding.autoCompleteDates.setText(
+            dateAdapter.getItem(viewModel.preferenceCanteenDate),
+            false,
+        )
+
+        binding.autoCompleteDates.setOnItemClickListener { _, _, position, _ ->
+            viewModel.preferenceCanteenDate = position
+            binding.autoCompleteDates.setText(dateAdapter.getItem(position))
+        }
+
         // --- miscellaneous settings --- //
 
         // Set up button toggle group for changing default fragment

app/src/main/java/com/denizk0461/weserplaner/viewmodel/CanteenViewModel.kt

@@ -95,4 +95,10 @@ class CanteenViewModel(app: Application) : AppViewModel(app) {
      */
     val preferenceAppLayout: AppLayout
         get() = repo.getAppLayout()
+
+    /**
+     * Determines in which format dates should be displayed on the canteen screen.
+     */
+    val preferenceCanteenDate: Int
+        get() = repo.getPreferenceCanteenDate()
 }

app/src/main/java/com/denizk0461/weserplaner/viewmodel/SettingsViewModel.kt

@@ -103,6 +103,13 @@ class SettingsViewModel(app: Application) : AppViewModel(app) {
         get() = repo.getAppLayout()
         set(newValue) { repo.setAppLayout(newValue) }
 
+    /**
+     * Determines in which format dates should be displayed on the canteen screen.
+     */
+    var preferenceCanteenDate: Int
+        get() = repo.getPreferenceCanteenDate()
+        set(newValue) { repo.setPreferenceCanteenDate(newValue) }
+
     fun setPreferenceFeatureTimetables(newValue: Boolean) { repo.setPreferenceFeatureTimetables(newValue) }
 
     // --- functions for dev codes --- //

app/src/main/res/layout/fragment_settings.xml

@@ -485,6 +485,97 @@
 
                     </androidx.appcompat.widget.LinearLayoutCompat>
 
+                    <!-- Dates -->
+                    <androidx.appcompat.widget.LinearLayoutCompat
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:layout_marginEnd="8dp"
+                        android:orientation="vertical"
+                        android:paddingHorizontal="16dp"
+                        android:paddingVertical="8dp">
+
+                        <androidx.appcompat.widget.AppCompatTextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            app:fontFamily="@font/lato_bolditalic"
+                            android:text="@string/settings_dates_title"
+                            android:textSize="16sp" />
+
+                        <androidx.appcompat.widget.AppCompatTextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/settings_dates_subtitle"
+                            android:textSize="16sp" />
+
+                        <com.google.android.material.textfield.TextInputLayout
+                            android:id="@+id/text_layout_dates"
+                            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.ExposedDropdownMenu"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            app:boxStrokeColor="@color/selector_text_input"
+                            app:hintTextColor="@color/selector_text_input">
+
+                            <com.google.android.material.textfield.MaterialAutoCompleteTextView
+                                android:id="@+id/auto_complete_dates"
+                                android:layout_width="match_parent"
+                                android:layout_height="wrap_content"
+                                android:textColor="?attr/colorOnSurfaceVariant"
+                                android:inputType="none"/>
+
+                        </com.google.android.material.textfield.TextInputLayout>
+
+<!--                        <com.google.android.material.button.MaterialButtonToggleGroup-->
+<!--                            android:id="@+id/toggle_date_group"-->
+<!--                            android:layout_width="match_parent"-->
+<!--                            android:layout_height="wrap_content"-->
+<!--                            android:gravity="center_horizontal"-->
+<!--                            app:singleSelection="true"-->
+<!--                            app:selectionRequired="true">-->
+
+<!--                            <com.google.android.material.button.MaterialButton-->
+<!--                                style="@style/Widget.Material3.Button.OutlinedButton"-->
+<!--                                android:id="@+id/toggle_date_0"-->
+<!--                                android:layout_width="0dp"-->
+<!--                                android:layout_weight="1"-->
+<!--                                android:layout_height="wrap_content"-->
+<!--                                android:text="@string/settings_dates_0"-->
+<!--                                android:textColor="@color/list_group_button"-->
+<!--                                app:strokeColor="?attr/colorOutlineVariant"/>-->
+
+<!--                            <com.google.android.material.button.MaterialButton-->
+<!--                                style="@style/Widget.Material3.Button.OutlinedButton"-->
+<!--                                android:id="@+id/toggle_date_1"-->
+<!--                                android:layout_width="0dp"-->
+<!--                                android:layout_weight="1"-->
+<!--                                android:layout_height="wrap_content"-->
+<!--                                android:text="@string/settings_dates_1"-->
+<!--                                android:textColor="@color/list_group_button"-->
+<!--                                app:strokeColor="?attr/colorOutlineVariant"/>-->
+
+<!--                            <com.google.android.material.button.MaterialButton-->
+<!--                                style="@style/Widget.Material3.Button.OutlinedButton"-->
+<!--                                android:id="@+id/toggle_date_2"-->
+<!--                                android:layout_width="0dp"-->
+<!--                                android:layout_weight="1"-->
+<!--                                android:layout_height="wrap_content"-->
+<!--                                android:text="@string/settings_dates_2"-->
+<!--                                android:textColor="@color/list_group_button"-->
+<!--                                app:strokeColor="?attr/colorOutlineVariant"/>-->
+
+<!--                            <com.google.android.material.button.MaterialButton-->
+<!--                                style="@style/Widget.Material3.Button.OutlinedButton"-->
+<!--                                android:id="@+id/toggle_date_3"-->
+<!--                                android:layout_width="0dp"-->
+<!--                                android:layout_weight="1"-->
+<!--                                android:layout_height="wrap_content"-->
+<!--                                android:text="@string/settings_dates_3"-->
+<!--                                android:textColor="@color/list_group_button"-->
+<!--                                app:strokeColor="?attr/colorOutlineVariant"/>-->
+
+<!--                        </com.google.android.material.button.MaterialButtonToggleGroup>-->
+
+                    </androidx.appcompat.widget.LinearLayoutCompat>
+
                 </androidx.appcompat.widget.LinearLayoutCompat>
 
             </com.google.android.material.card.MaterialCardView>

app/src/main/res/values-de/strings.xml

@@ -286,6 +286,9 @@
     <string name="settings_pricing_student">Studierende</string>
     <string name="settings_pricing_employee">Bedienstete</string>
 
+    <string name="settings_dates_title">Stelle Anzeige des Datums ein</string>
+    <string name="settings_dates_subtitle">Gilt für die Reiter der täglichen Mensenangebote</string>
+
     <string name="settings_allergens_title">Markiere Angebote mit Allergenen mit einem Stern*</string>
     <string name="settings_allergens_subtitle">Wird auch für Zusatzstoffe genutzt</string>
     <string name="settings_allergens_title_alt">App entwickelt von denizk0461</string>

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

@@ -291,6 +291,15 @@
     <string name="settings_pricing_student">Students</string>
     <string name="settings_pricing_employee">Employees</string>
 
+    <string name="settings_dates_title">Set how dates are displayed</string>
+    <string name="settings_dates_subtitle">Applies to the daily canteen offers\' tabs</string>
+    <string-array name="settings_dates">
+        <item translatable="false">Fr., 12.01.</item>
+        <item translatable="false">Freitag, 12.01.</item>
+        <item translatable="false">12.01.</item>
+        <item translatable="false">Freitag</item>
+    </string-array>
+
     <string name="settings_allergens_title">Mark offers with allergens with a star*</string>
     <string name="settings_allergens_subtitle">Also applies to additives</string>
     <string name="settings_allergens_title_alt">App developed by denizk0461</string>