Add Guest Login to the Demo App (#634)

Author: nuno-vieira

DemoAppSwiftUI/DemoUser.swift

@@ -11,9 +11,23 @@ public let currentUserIdRegisteredForPush = "currentUserIdRegisteredForPush"
 public struct UserCredentials: Codable {
     public let id: String
     public let name: String
-    public let avatarURL: URL
+    public let avatarURL: URL?
     public let token: String
     public let birthLand: String
+
+    var isGuest: Bool {
+        id == "guest"
+    }
+
+    static var guestUser: UserCredentials {
+        UserCredentials(
+            id: "guest",
+            name: "Guest",
+            avatarURL: nil,
+            token: "",
+            birthLand: ""
+        )
+    }
 }
 
 extension UserCredentials: Identifiable {
@@ -135,8 +149,7 @@ extension UserCredentials: Identifiable {
             "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiZ2VuZXJhbF9ncmlldm91cyJ9.g2UUZdENuacFIxhYCylBuDJZUZ2x59MTWaSpndWGCTU",
             "Qymaen jai Sheelal"
         )
-
     ].map {
         UserCredentials(id: $0.0, name: $0.1, avatarURL: URL(string: $0.2)!, token: $0.3, birthLand: $0.4)
-    }
+    } + [UserCredentials.guestUser]
 }

DemoAppSwiftUI/LoginView.swift

@@ -56,15 +56,25 @@ struct DemoUserView: View {
 
     var body: some View {
         HStack {
-            StreamLazyImage(
-                url: user.avatarURL,
-                size: CGSize(width: imageSize, height: imageSize)
-            )
+            if user.isGuest {
+                Image(systemName: "person.fill")
+                    .resizable()
+                    .foregroundColor(colors.tintColor)
+                    .frame(width: imageSize, height: imageSize)
+                    .aspectRatio(contentMode: .fit)
+                    .background(Color(colors.background6))
+                    .clipShape(Circle())
+            } else {
+                StreamLazyImage(
+                    url: user.avatarURL,
+                    size: CGSize(width: imageSize, height: imageSize)
+                )
+            }
 
             VStack(alignment: .leading, spacing: 4) {
                 Text(user.name)
                     .font(fonts.bodyBold)
-                Text("Stream test account")
+                Text(user.isGuest ? "Login as Guest" : "Stream test account")
                     .font(fonts.footnote)
                     .foregroundColor(Color(colors.textLowEmphasis))
             }

DemoAppSwiftUI/LoginViewModel.swift

@@ -14,6 +14,11 @@ class LoginViewModel: ObservableObject {
     @Injected(\.chatClient) var chatClient
 
     func demoUserTapped(_ user: UserCredentials) {
+        if user.isGuest {
+            connectGuestUser(withCredentials: user)
+            return
+        }
+
         connectUser(withCredentials: user)
     }
 
@@ -25,7 +30,7 @@ class LoginViewModel: ObservableObject {
         chatClient.connectUser(
             userInfo: .init(id: credentials.id, name: credentials.name, imageURL: credentials.avatarURL),
             token: token
-        ) { error in
+        ) { [weak self] error in
             if let error = error {
                 log.error("connecting the user failed \(error)")
                 return
@@ -40,4 +45,25 @@ class LoginViewModel: ObservableObject {
             }
         }
     }
+
+    private func connectGuestUser(withCredentials credentials: UserCredentials) {
+        loading = true
+        LogConfig.level = .warning
+
+        chatClient.connectGuestUser(
+            userInfo: .init(id: credentials.id, name: credentials.name)
+        ) { [weak self] error in
+            if let error = error {
+                log.error("connecting the user failed \(error)")
+                return
+            }
+
+            DispatchQueue.main.async { [weak self] in
+                withAnimation {
+                    self?.loading = false
+                    AppState.shared.userState = .loggedIn
+                }
+            }
+        }
+    }
 }