Add loading-indicator

cause I'm lazy

Mastodon.xcodeproj/project.pbxproj

@@ -145,6 +145,7 @@
 		D8318A882A4468D300C0FB73 /* NotificationSettingsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D8318A872A4468D300C0FB73 /* NotificationSettingsViewController.swift */; };
 		D8318A8A2A4468DC00C0FB73 /* AboutViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D8318A892A4468DC00C0FB73 /* AboutViewController.swift */; };
 		D8363B1629469CE200A74079 /* OnboardingNextView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D8363B1529469CE200A74079 /* OnboardingNextView.swift */; };
+		D84FA0932AE6915800987F47 /* MBProgressHUD in Frameworks */ = {isa = PBXBuildFile; productRef = D84FA0922AE6915800987F47 /* MBProgressHUD */; };
 		D852C23C2AC5D02C00309232 /* AboutInstanceViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D852C23B2AC5D02C00309232 /* AboutInstanceViewController.swift */; };
 		D852C23E2AC5D03300309232 /* InstanceRulesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D852C23D2AC5D03300309232 /* InstanceRulesViewController.swift */; };
 		D87364F92AE28DB500C8F919 /* Kanna in Frameworks */ = {isa = PBXBuildFile; productRef = D87364F82AE28DB500C8F919 /* Kanna */; };
@@ -1290,6 +1291,7 @@
 			files = (
 				357FEEAF29523D470021C9DC /* MastodonSDKDynamic in Frameworks */,
 				DBF96326262EC0A6001D8D25 /* AuthenticationServices.framework in Frameworks */,
+				D84FA0932AE6915800987F47 /* MBProgressHUD in Frameworks */,
 				D87364F92AE28DB500C8F919 /* Kanna in Frameworks */,
 				71458AF57697DB405CFEC37C /* Pods_Mastodon.framework in Frameworks */,
 			);
@@ -3144,6 +3146,7 @@
 			packageProductDependencies = (
 				357FEEAE29523D470021C9DC /* MastodonSDKDynamic */,
 				D87364F82AE28DB500C8F919 /* Kanna */,
+				D84FA0922AE6915800987F47 /* MBProgressHUD */,
 			);
 			productName = Mastodon;
 			productReference = DB427DD225BAA00100D1B89D /* Mastodon.app */;
@@ -3328,6 +3331,7 @@
 			packageReferences = (
 				2AB501192992322500346092 /* XCRemoteSwiftPackageReference "LightChart" */,
 				D87364F72AE28DB500C8F919 /* XCRemoteSwiftPackageReference "Kanna" */,
+				D84FA0912AE6915800987F47 /* XCRemoteSwiftPackageReference "MBProgressHUD" */,
 			);
 			productRefGroup = DB427DD325BAA00100D1B89D /* Products */;
 			projectDirPath = "";
@@ -5431,6 +5435,14 @@
 				kind = branch;
 			};
 		};
+		D84FA0912AE6915800987F47 /* XCRemoteSwiftPackageReference "MBProgressHUD" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/jdg/MBProgressHUD.git";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 1.2.0;
+			};
+		};
 		D87364F72AE28DB500C8F919 /* XCRemoteSwiftPackageReference "Kanna" */ = {
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/tid-kijyun/Kanna.git";
@@ -5475,6 +5487,11 @@
 			isa = XCSwiftPackageProductDependency;
 			productName = MastodonSDKDynamic;
 		};
+		D84FA0922AE6915800987F47 /* MBProgressHUD */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = D84FA0912AE6915800987F47 /* XCRemoteSwiftPackageReference "MBProgressHUD" */;
+			productName = MBProgressHUD;
+		};
 		D87364F82AE28DB500C8F919 /* Kanna */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = D87364F72AE28DB500C8F919 /* XCRemoteSwiftPackageReference "Kanna" */;

Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -82,6 +82,15 @@
           "version": null
         }
       },
+      {
+        "package": "MBProgressHUD",
+        "repositoryURL": "https://github.com/jdg/MBProgressHUD.git",
+        "state": {
+          "branch": null,
+          "revision": "bca42b801100b2b3a4eda0ba8dd33d858c780b0d",
+          "version": "1.2.0"
+        }
+      },
       {
         "package": "MetaTextKit",
         "repositoryURL": "https://github.com/TwidereProject/MetaTextKit.git",

Mastodon/Coordinator/SceneCoordinator.swift

@@ -13,6 +13,7 @@ import MastodonSDK
 import MastodonCore
 import MastodonAsset
 import MastodonLocalization
+import MBProgressHUD
 
 final public class SceneCoordinator {
     
@@ -28,6 +29,7 @@ final public class SceneCoordinator {
     
     private(set) weak var tabBarController: MainTabBarController!
     private(set) weak var splitViewController: RootSplitViewController?
+    private(set) weak var rootViewController: UIViewController?
 
     private(set) var secondaryStackHashValues = Set<Int>()
     var childCoordinator: Coordinator?
@@ -239,6 +241,7 @@ extension SceneCoordinator {
                     rootViewController = splitViewController
             }
             sceneDelegate.window?.rootViewController = rootViewController                   // base: main
+            self.rootViewController = rootViewController
 
             if _authContext == nil {                                                        // entry #1: welcome
                 DispatchQueue.main.async {
@@ -566,6 +569,23 @@ private extension SceneCoordinator {
     }
 }
 
+//MARK: - Loading
+
+public extension SceneCoordinator {
+    func showLoading() {
+        guard let rootViewController else { return }
+
+        MBProgressHUD.showAdded(to: rootViewController.view, animated: true)
+    }
+
+    @MainActor
+    func hideLoading() {
+        guard let rootViewController else { return }
+
+        MBProgressHUD.hide(for: rootViewController.view, animated: true)
+    }
+}
+
 //MARK: - MastodonLoginViewControllerDelegate
 
 extension SceneCoordinator: MastodonLoginViewControllerDelegate {