Room details screen (#348)

* Create screen module

* Display details on header tap

* Add strings

* Add room avatar size on details

* Update members method signature

* Use room proxy values

* Create room members screen

* Display room members on tap

* Update previews and mock room proxy

* Commit project file

* Various tweaks and cleanup following code review

* More small tweaks + UI and screenshot tests

Co-authored-by: Stefan Ceriu <stefanc@matrix.org>

ElementX/Sources/Services/Room/MockRoomProxy.swift

@@ -22,16 +22,14 @@ struct MockRoomProxy: RoomProxyProtocol {
     let id = UUID().uuidString
     let name: String? = nil
     let displayName: String?
-    
-    let topic: String? = nil
-    
-    let avatarURL: String? = nil
-    
-    let isDirect = Bool.random()
-    let isSpace = Bool.random()
-    let isPublic = Bool.random()
-    let isEncrypted = Bool.random()
-    let isTombstoned = Bool.random()
+    var topic: String?
+    var avatarURL: String?
+    var isDirect = Bool.random()
+    var isSpace = Bool.random()
+    var isPublic = Bool.random()
+    var isEncrypted = Bool.random()
+    var isTombstoned = Bool.random()
+    var members: [RoomMemberProxy]?
     
     let timelineProvider: RoomTimelineProviderProtocol = MockRoomTimelineProvider()
     
@@ -76,4 +74,11 @@ struct MockRoomProxy: RoomProxyProtocol {
     func redact(_ eventID: String) async -> Result<Void, RoomProxyError> {
         .failure(.failedRedactingEvent)
     }
+
+    func members() async -> Result<[RoomMemberProxy], RoomProxyError> {
+        if let members {
+            return .success(members)
+        }
+        return .failure(.failedRetrievingMembers)
+    }
 }

ElementX/Sources/Services/Room/RoomMemberProxy.swift

@@ -0,0 +1,93 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+import MatrixRustSDK
+
+struct RoomMemberProxy {
+    private let member: RoomMember
+
+    init(with member: RoomMember) {
+        self.member = member
+    }
+
+    var userId: String {
+        member.userId
+    }
+
+    var displayName: String? {
+        member.displayName
+    }
+
+    var avatarUrl: String? {
+        member.avatarUrl
+    }
+
+    var membership: MembershipState {
+        member.membership
+    }
+
+    var isNameAmbiguous: Bool {
+        member.isNameAmbiguous
+    }
+
+    var powerLevel: Int64 {
+        member.powerLevel
+    }
+
+    var normalizedPowerLevel: Int64 {
+        member.normalizedPowerLevel
+    }
+}
+
+extension RoomMemberProxy: Identifiable {
+    var id: String {
+        userId
+    }
+}
+
+// Mocks
+extension RoomMemberProxy {
+    static var mockAlice: RoomMemberProxy {
+        RoomMemberProxy(with: .init(userId: "alice@matrix.org",
+                                    displayName: "Alice",
+                                    avatarUrl: nil,
+                                    membership: .join,
+                                    isNameAmbiguous: false,
+                                    powerLevel: 50,
+                                    normalizedPowerLevel: 50))
+    }
+    
+    static var mockBob: RoomMemberProxy {
+        RoomMemberProxy(with: .init(userId: "bob@matrix.org",
+                                    displayName: "Bob",
+                                    avatarUrl: nil,
+                                    membership: .join,
+                                    isNameAmbiguous: false,
+                                    powerLevel: 50,
+                                    normalizedPowerLevel: 50))
+    }
+    
+    static var mockCharlie: RoomMemberProxy {
+        RoomMemberProxy(with: .init(userId: "charlie@matrix.org",
+                                    displayName: "Charlie",
+                                    avatarUrl: nil,
+                                    membership: .join,
+                                    isNameAmbiguous: false,
+                                    powerLevel: 50,
+                                    normalizedPowerLevel: 50))
+    }
+}

ElementX/Sources/Services/Room/RoomProxy.swift

@@ -224,6 +224,17 @@ class RoomProxy: RoomProxyProtocol {
         .value
     }
     
+    func members() async -> Result<[RoomMemberProxy], RoomProxyError> {
+        await Task.dispatch(on: .global()) {
+            do {
+                let members = try self.room.members()
+                return .success(members.map { RoomMemberProxy(with: $0) })
+            } catch {
+                return .failure(.failedRetrievingMembers)
+            }
+        }
+    }
+    
     func update(avatarURL: String?, forUserId userId: String) {
         memberAvatars[userId] = avatarURL
     }

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -25,6 +25,7 @@ enum RoomProxyError: Error {
     case failedSendingMessage
     case failedRedactingEvent
     case failedAddingTimelineListener
+    case failedRetrievingMembers
 }
 
 @MainActor
@@ -62,6 +63,8 @@ protocol RoomProxyProtocol {
     func editMessage(_ newMessage: String, originalEventId: String) async -> Result<Void, RoomProxyError>
     
     func redact(_ eventID: String) async -> Result<Void, RoomProxyError>
+
+    func members() async -> Result<[RoomMemberProxy], RoomProxyError>
 }
 
 extension RoomProxyProtocol {