Take into account homeserver capabilities (#6507)

* Take into account homeserver capabilities: add `HomeserverCapabilitiesProvider` to check if the HS allows changing the user's display name or avatar. Also, modify the edit user profile screen to reflect these values.

* Add `/myavatar` command. Filter both `/nick` and `/myavatar` commands based on the homeserver capabilities.

* Update screenshots

* Assume the use can change their display name and avatar url if the capabilities check fails: if they try to change those, the HS will return an error anyway.

* Disable also `/myroomname` and `/myroomavatar` based on the HS capabilities.

---------

Co-authored-by: ElementBot <android@element.io>

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/user/editprofile/EditUserProfilePresenter.kt

@@ -15,6 +15,7 @@ import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.saveable.rememberSaveable
@@ -103,6 +104,14 @@ class EditUserProfilePresenter(
             }
         }
 
+        val homeserverCapabilities = matrixClient.homeserverCapabilities()
+        val canChangeDisplayName = produceState(true) {
+            value = homeserverCapabilities.canChangeDisplayName().getOrDefault(true)
+        }
+        val canChangeAvatar = produceState(true) {
+            value = homeserverCapabilities.canChangeAvatarUrl().getOrDefault(true)
+        }
+
         val saveAction: MutableState<AsyncAction<Unit>> = remember { mutableStateOf(AsyncAction.Uninitialized) }
         val localCoroutineScope = rememberCoroutineScope()
 
@@ -169,6 +178,8 @@ class EditUserProfilePresenter(
             saveButtonEnabled = canSave && saveAction.value !is AsyncAction.Loading,
             saveAction = saveAction.value,
             cameraPermissionState = cameraPermissionState,
+            canChangeDisplayName = canChangeDisplayName.value,
+            canChangeAvatarUrl = canChangeAvatar.value,
             eventSink = ::handleEvent,
         )
     }

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/user/editprofile/EditUserProfileState.kt

@@ -22,5 +22,7 @@ data class EditUserProfileState(
     val saveButtonEnabled: Boolean,
     val saveAction: AsyncAction<Unit>,
     val cameraPermissionState: PermissionsState,
+    val canChangeDisplayName: Boolean,
+    val canChangeAvatarUrl: Boolean,
     val eventSink: (EditUserProfileEvent) -> Unit
 )

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/user/editprofile/EditUserProfileStateProvider.kt

@@ -22,6 +22,7 @@ open class EditUserProfileStateProvider : PreviewParameterProvider<EditUserProfi
             aEditUserProfileState(),
             aEditUserProfileState(userAvatarUrl = "example://uri"),
             aEditUserProfileState(saveAction = AsyncAction.ConfirmingCancellation),
+            aEditUserProfileState(canChangeAvatarUrl = false, canChangeDisplayName = false),
         )
 }
 
@@ -33,6 +34,8 @@ fun aEditUserProfileState(
     saveButtonEnabled: Boolean = true,
     saveAction: AsyncAction<Unit> = AsyncAction.Uninitialized,
     cameraPermissionState: PermissionsState = aPermissionsState(showDialog = false),
+    canChangeDisplayName: Boolean = true,
+    canChangeAvatarUrl: Boolean = true,
     eventSink: (EditUserProfileEvent) -> Unit = {},
 ) = EditUserProfileState(
     userId = userId,
@@ -42,5 +45,7 @@ fun aEditUserProfileState(
     saveButtonEnabled = saveButtonEnabled,
     saveAction = saveAction,
     cameraPermissionState = cameraPermissionState,
+    canChangeDisplayName = canChangeDisplayName,
+    canChangeAvatarUrl = canChangeAvatarUrl,
     eventSink = eventSink,
 )

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/user/editprofile/EditUserProfileView.kt

@@ -120,6 +120,7 @@ fun EditUserProfileView(
                 state = avatarPickerState,
                 onClick = ::onAvatarClick,
                 modifier = Modifier.align(Alignment.CenterHorizontally),
+                enabled = state.canChangeAvatarUrl,
             )
             Spacer(modifier = Modifier.height(16.dp))
             Text(
@@ -134,6 +135,7 @@ fun EditUserProfileView(
                 value = state.displayName,
                 placeholder = stringResource(CommonStrings.common_room_name_placeholder),
                 singleLine = true,
+                enabled = state.canChangeDisplayName,
                 onValueChange = { state.eventSink(EditUserProfileEvent.UpdateDisplayName(it)) },
             )
         }