Fix recipe of the day crash

Author: lneugebauer

app/src/main/java/de/lukasneugebauer/nextcloudcookbook/core/data/PreferencesManager.kt

@@ -13,6 +13,7 @@ import androidx.datastore.preferences.preferencesDataStore
 import dagger.hilt.android.qualifiers.ApplicationContext
 import de.lukasneugebauer.nextcloudcookbook.core.domain.model.NcAccount
 import de.lukasneugebauer.nextcloudcookbook.core.domain.model.RecipeOfTheDay
+import de.lukasneugebauer.nextcloudcookbook.core.util.Constants.DEFAULT_RECIPE_OF_THE_DAY_ID
 import de.lukasneugebauer.nextcloudcookbook.settings.util.SettingsConstants.STAY_AWAKE_DEFAULT
 import de.lukasneugebauer.nextcloudcookbook.settings.util.SettingsConstants.STAY_AWAKE_KEY
 import kotlinx.coroutines.flow.catch
@@ -56,7 +57,7 @@ class PreferencesManager @Inject constructor(
             val ncUsername = preferences[PreferencesKeys.NC_USERNAME] ?: ""
             val ncToken = preferences[PreferencesKeys.NC_TOKEN] ?: ""
             val ncUrl = preferences[PreferencesKeys.NC_URL] ?: ""
-            val recipeOfTheDayId = preferences[PreferencesKeys.RECIPE_OF_THE_DAY_ID] ?: 0
+            val recipeOfTheDayId = preferences[PreferencesKeys.RECIPE_OF_THE_DAY_ID] ?: DEFAULT_RECIPE_OF_THE_DAY_ID
             val recipeOfTheDayUpdatedAt =
                 preferences[PreferencesKeys.RECIPE_OF_THE_DAY_UPDATED_AT] ?: 0
 

app/src/main/java/de/lukasneugebauer/nextcloudcookbook/core/util/Constants.kt

@@ -5,6 +5,7 @@ import de.lukasneugebauer.nextcloudcookbook.BuildConfig
 object Constants {
     private const val API_ENDPOINT: String = "index.php/apps/cookbook/api"
     private const val API_VERSION: String = "/v1"
+    const val DEFAULT_RECIPE_OF_THE_DAY_ID: Int = 0
     const val FULL_PATH: String = API_ENDPOINT + API_VERSION
     const val SHARED_PREFERENCES_KEY: String = BuildConfig.APPLICATION_ID + ".SHARED_PREFERENCES"
 }

app/src/main/java/de/lukasneugebauer/nextcloudcookbook/recipe/domain/usecase/GetHomeScreenDataUseCase.kt

@@ -4,6 +4,7 @@ import com.dropbox.android.external.store4.get
 import de.lukasneugebauer.nextcloudcookbook.R
 import de.lukasneugebauer.nextcloudcookbook.core.data.PreferencesManager
 import de.lukasneugebauer.nextcloudcookbook.core.domain.model.RecipeOfTheDay
+import de.lukasneugebauer.nextcloudcookbook.core.util.Constants.DEFAULT_RECIPE_OF_THE_DAY_ID
 import de.lukasneugebauer.nextcloudcookbook.core.util.IoDispatcher
 import de.lukasneugebauer.nextcloudcookbook.di.CategoriesStore
 import de.lukasneugebauer.nextcloudcookbook.di.RecipePreviewsByCategoryStore
@@ -39,10 +40,12 @@ class GetHomeScreenDataUseCase @Inject constructor(
         val homeScreenData = mutableListOf<HomeScreenDataResult>()
         var recipeOfTheDay = preferencesManager.preferencesFlow.map { it.recipeOfTheDay }.first()
 
-        if (recipeOfTheDay.id == 0 || recipeOfTheDay.updatedAt.isBefore(currentDate)) {
+        if (recipeOfTheDay.id == DEFAULT_RECIPE_OF_THE_DAY_ID || recipeOfTheDay.updatedAt.isBefore(currentDate)) {
             try {
                 val newRecipeOfTheDayId =
-                    recipePreviewsStore.get(Unit).random().toRecipePreview().id
+                    recipePreviewsStore.get(Unit).randomOrNull()?.toRecipePreview()?.id
+                        ?: DEFAULT_RECIPE_OF_THE_DAY_ID
+
                 recipeOfTheDay = RecipeOfTheDay(
                     id = newRecipeOfTheDayId,
                     updatedAt = LocalDateTime.now(),