Add simplified sliding sync toggle to developer options

libraries/preferences/api/src/main/kotlin/io/element/android/libraries/preferences/api/store/AppPreferencesStore.kt

@@ -28,5 +28,8 @@ interface AppPreferencesStore {
     suspend fun setTheme(theme: String)
     fun getThemeFlow(): Flow<String?>
 
+    suspend fun setSimplifiedSlidingSyncEnabled(enabled: Boolean)
+    fun isSimplifiedSlidingSyncEnabledFlow(): Flow<Boolean>
+
     suspend fun reset()
 }

libraries/preferences/impl/src/main/kotlin/io/element/android/libraries/preferences/impl/store/DefaultAppPreferencesStore.kt

@@ -38,6 +38,7 @@ private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(na
 private val developerModeKey = booleanPreferencesKey("developerMode")
 private val customElementCallBaseUrlKey = stringPreferencesKey("elementCallBaseUrl")
 private val themeKey = stringPreferencesKey("theme")
+private val simplifiedSlidingSyncKey = booleanPreferencesKey("useSimplifiedSlidingSync")
 
 @ContributesBinding(AppScope::class)
 class DefaultAppPreferencesStore @Inject constructor(
@@ -87,6 +88,18 @@ class DefaultAppPreferencesStore @Inject constructor(
         }
     }
 
+    override suspend fun setSimplifiedSlidingSyncEnabled(enabled: Boolean) {
+        store.edit { prefs ->
+            prefs[simplifiedSlidingSyncKey] = enabled
+        }
+    }
+
+    override fun isSimplifiedSlidingSyncEnabledFlow(): Flow<Boolean> {
+        return store.data.map { prefs ->
+            prefs[simplifiedSlidingSyncKey] ?: false
+        }
+    }
+
     override suspend fun reset() {
         store.edit { it.clear() }
     }

libraries/preferences/test/src/main/kotlin/io/element/android/libraries/preferences/test/InMemoryAppPreferencesStore.kt

@@ -24,10 +24,12 @@ class InMemoryAppPreferencesStore(
     isDeveloperModeEnabled: Boolean = false,
     customElementCallBaseUrl: String? = null,
     theme: String? = null,
+    simplifiedSlidingSyncEnabled: Boolean = false
 ) : AppPreferencesStore {
     private val isDeveloperModeEnabled = MutableStateFlow(isDeveloperModeEnabled)
     private val customElementCallBaseUrl = MutableStateFlow(customElementCallBaseUrl)
     private val theme = MutableStateFlow(theme)
+    private val simplifiedSlidingSyncEnabled = MutableStateFlow(simplifiedSlidingSyncEnabled)
 
     override suspend fun setDeveloperModeEnabled(enabled: Boolean) {
         isDeveloperModeEnabled.value = enabled
@@ -53,6 +55,14 @@ class InMemoryAppPreferencesStore(
         return theme
     }
 
+    override suspend fun setSimplifiedSlidingSyncEnabled(enabled: Boolean) {
+        simplifiedSlidingSyncEnabled.value = enabled
+    }
+
+    override fun isSimplifiedSlidingSyncEnabledFlow(): Flow<Boolean> {
+        return simplifiedSlidingSyncEnabled
+    }
+
     override suspend fun reset() {
         // No op
     }