Add read-only trip summary widget

app/src/main/AndroidManifest.xml

@@ -87,6 +87,18 @@
                 android:resource="@xml/car_widget_info" />
         </receiver>
 
+        <!-- Home screen widget: recent trip summary -->
+        <receiver
+            android:name=".widget.TripSummaryWidgetReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/trip_summary_widget_info" />
+        </receiver>
+
         <!-- Widget configuration activity: car selection -->
         <activity
             android:name=".widget.CarWidgetConfigActivity"
@@ -97,6 +109,16 @@
             </intent-filter>
         </activity>
 
+        <!-- Widget configuration activity: car selection for trip summaries -->
+        <activity
+            android:name=".widget.TripSummaryWidgetConfigActivity"
+            android:exported="true"
+            android:theme="@style/Theme.MateDroid">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+            </intent-filter>
+        </activity>
+
     </application>
 
 </manifest>

app/src/main/java/com/matedroid/MainActivity.kt

@@ -25,7 +25,9 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         currentIntent = intent
-        if (intent.hasExtra("EXTRA_CAR_ID")) {
+        if (intent.hasExtra("EXTRA_CAR_ID") &&
+            !intent.getBooleanExtra("EXTRA_SKIP_CAR_WIDGET_UPDATE", false)
+        ) {
             CarWidgetUpdateWorker.scheduleImmediateUpdate(this)
         }
         enableEdgeToEdge()

app/src/main/java/com/matedroid/data/local/SettingsDataStore.kt

@@ -54,6 +54,7 @@ data class AppSettings(
     val currencyCode: String = "EUR",
     val showShortDrivesCharges: Boolean = false,
     val teslamateBaseUrl: String = "",
+    val unitOfLength: String = "km",
     val lastSelectedCarId: Int? = null
 ) {
     val isConfigured: Boolean
@@ -76,6 +77,7 @@ class SettingsDataStore @Inject constructor(
     private val currencyCodeKey = stringPreferencesKey("currency_code")
     private val showShortDrivesChargesKey = booleanPreferencesKey("show_short_drives_charges")
     private val teslamateBaseUrlKey = stringPreferencesKey("teslamate_base_url")
+    private val unitOfLengthKey = stringPreferencesKey("unit_of_length")
     private val lastSelectedCarIdKey = intPreferencesKey("last_selected_car_id")
     private val carImageOverridesKey = stringPreferencesKey("car_image_overrides")
     private val notificationPermissionAskedKey = booleanPreferencesKey("notification_permission_asked")
@@ -95,6 +97,7 @@ class SettingsDataStore @Inject constructor(
             currencyCode = preferences[currencyCodeKey] ?: "EUR",
             showShortDrivesCharges = preferences[showShortDrivesChargesKey] ?: false,
             teslamateBaseUrl = preferences[teslamateBaseUrlKey] ?: "",
+            unitOfLength = preferences[unitOfLengthKey] ?: "km",
             lastSelectedCarId = preferences[lastSelectedCarIdKey]
         )
     }
@@ -194,6 +197,12 @@ class SettingsDataStore @Inject constructor(
         }
     }
 
+    suspend fun saveUnitOfLength(unitOfLength: String) {
+        context.dataStore.edit { preferences ->
+            preferences[unitOfLengthKey] = unitOfLength
+        }
+    }
+
     suspend fun saveLastSelectedCarId(carId: Int) {
         context.dataStore.edit { preferences ->
             preferences[lastSelectedCarIdKey] = carId

app/src/main/java/com/matedroid/data/local/dao/ChargeSummaryDao.kt

@@ -62,6 +62,14 @@ interface ChargeSummaryDao {
     """)
     suspend fun sumCostInRange(carId: Int, startDate: String, endDate: String): Double
 
+    @Query("""
+        SELECT COUNT(*) FROM charges_summary
+        WHERE carId = :carId
+        AND startDate >= :startDate AND startDate < :endDate
+        AND cost IS NOT NULL
+    """)
+    suspend fun countWithCostInRange(carId: Int, startDate: String, endDate: String): Int
+
     // Average cost per kWh
     @Query("""
         SELECT COALESCE(SUM(cost) / NULLIF(SUM(energyAdded), 0), 0)

app/src/main/java/com/matedroid/data/sync/DataSyncWorker.kt

@@ -17,6 +17,7 @@ import java.util.concurrent.TimeUnit
 import com.matedroid.R
 import com.matedroid.data.repository.ApiResult
 import com.matedroid.data.repository.TeslamateRepository
+import com.matedroid.widget.TripSummaryWidgetUpdateWorker
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedInject
 
@@ -134,6 +135,7 @@ class DataSyncWorker @AssistedInject constructor(
                 log("Sync complete for all cars")
                 // Schedule background geocoding for location data
                 scheduleGeocoding()
+                TripSummaryWidgetUpdateWorker.scheduleImmediateUpdate(applicationContext)
                 Result.success()
             }
         } catch (e: Exception) {

app/src/main/java/com/matedroid/ui/navigation/NavGraph.kt

@@ -179,6 +179,7 @@ fun NavGraph(
                     "mileage" -> Screen.Mileage(carId, exteriorColor)
                     "battery" -> Screen.Battery(carId, exteriorColor = exteriorColor)
                     "stats" -> Screen.Stats(carId, exteriorColor)
+                    "trips" -> Screen.Trips(carId, exteriorColor)
                     "countries_visited" -> Screen.CountriesVisited(carId, exteriorColor)
                     "updates" -> Screen.Updates(carId, exteriorColor)
                     "sentry_history" -> Screen.SentryHistory(carId, exteriorColor)

app/src/main/java/com/matedroid/ui/screens/dashboard/DashboardViewModel.kt

@@ -396,16 +396,20 @@ class DashboardViewModel @Inject constructor(
     }
 
     /**
-     * Fetches global settings from the API and caches the base_url.
+     * Fetches global settings from the API and caches settings used offline.
      * This runs silently - failures don't affect the user experience.
      */
     private fun fetchAndCacheGlobalSettings() {
         viewModelScope.launch {
             when (val result = repository.getGlobalSettings()) {
                 is ApiResult.Success -> {
-                    result.data.settings?.teslamateUrls?.baseUrl?.let { url ->
+                    val globalSettings = result.data.settings
+                    globalSettings?.teslamateUrls?.baseUrl?.let { url ->
                         settingsDataStore.saveTeslamateBaseUrl(url.trimEnd('/'))
                     }
+                    globalSettings?.teslamateUnits?.unitOfLength
+                        ?.takeIf { it == "km" || it == "mi" }
+                        ?.let { settingsDataStore.saveUnitOfLength(it) }
                 }
                 is ApiResult.Error -> {
                     // Silent fail - this is optional functionality

app/src/main/java/com/matedroid/ui/screens/settings/SettingsViewModel.kt

@@ -253,15 +253,19 @@ class SettingsViewModel @Inject constructor(
     }
 
     /**
-     * Fetches global settings from the API and caches the base_url.
+     * Fetches global settings from the API and caches settings used offline.
      * This runs silently - failures don't affect the user experience.
      */
     private suspend fun fetchAndCacheGlobalSettings() {
         when (val result = repository.getGlobalSettings()) {
             is ApiResult.Success -> {
-                result.data.settings?.teslamateUrls?.baseUrl?.let { url ->
+                val globalSettings = result.data.settings
+                globalSettings?.teslamateUrls?.baseUrl?.let { url ->
                     settingsDataStore.saveTeslamateBaseUrl(url.trimEnd('/'))
                 }
+                globalSettings?.teslamateUnits?.unitOfLength
+                    ?.takeIf { it == "km" || it == "mi" }
+                    ?.let { settingsDataStore.saveUnitOfLength(it) }
             }
             is ApiResult.Error -> {
                 // Silent fail - this is optional functionality