Update API around brandColor.

features/enterprise/api/src/main/kotlin/io/element/android/features/enterprise/api/EnterpriseService.kt

@@ -23,7 +23,7 @@ interface EnterpriseService {
      * Override the brand color.
      * @param brandColor the color in hex format (#RRGGBBAA or #RRGGBB), or null to reset to default.
      */
-    fun overrideBrandColor(brandColor: String?)
+    suspend fun overrideBrandColor(brandColor: String?)
 
     @Composable
     fun semanticColorsLight(): State<SemanticColors>

features/enterprise/impl-foss/src/main/kotlin/io/element/android/features/enterprise/impl/DefaultEnterpriseService.kt

@@ -32,7 +32,7 @@ class DefaultEnterpriseService : EnterpriseService {
     override fun defaultHomeserverList(): List<String> = emptyList()
     override suspend fun isAllowedToConnectToHomeserver(homeserverUrl: String) = true
 
-    override fun overrideBrandColor(brandColor: String?) = Unit
+    override suspend fun overrideBrandColor(brandColor: String?) = Unit
 
     @Composable
     override fun semanticColorsLight(): State<SemanticColors> {

features/enterprise/test/src/main/kotlin/io/element/android/features/enterprise/test/FakeEnterpriseService.kt

@@ -42,7 +42,7 @@ class FakeEnterpriseService(
         isAllowedToConnectToHomeserverResult(homeserverUrl)
     }
 
-    override fun overrideBrandColor(brandColor: String?) {
+    override suspend fun overrideBrandColor(brandColor: String?) = simulateLongTask {
         overrideBrandColorResult(brandColor)
     }
 

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenter.kt

@@ -135,7 +135,7 @@ class DeveloperSettingsPresenter(
                     }
                     appPreferencesStore.setTracingLogPacks(currentPacks)
                 }
-                is DeveloperSettingsEvents.ChangeBrandColor -> {
+                is DeveloperSettingsEvents.ChangeBrandColor -> coroutineScope.launch {
                     showColorPicker = false
                     val color = event.color?.value?.toHexString(HexFormat.UpperCase)?.substring(2, 8)
                     enterpriseService.overrideBrandColor(color)

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt

@@ -203,6 +203,7 @@ class DeveloperSettingsPresenterTest {
             assertThat(awaitItem().showColorPicker).isTrue()
             initialState.eventSink(DeveloperSettingsEvents.ChangeBrandColor(Color.Green))
             assertThat(awaitItem().showColorPicker).isFalse()
+            skipItems(1)
             overrideBrandColorResult.assertions().isCalledOnce()
                 .with(value("00FF00"))
         }