Add gif support for media view

Signed-off-by: Marcel Müller <marcel-mueller@gmx.de>

NextcloudTalk.xcodeproj/project.pbxproj

@@ -253,6 +253,7 @@
 		1FBC3BE92B61BD09003909E0 /* TestBaseRealm.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1FBC3BE82B61BD09003909E0 /* TestBaseRealm.swift */; };
 		1FC940B92A5F21FC00FFFADE /* SwiftMarkdownObjCBridge.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1F0A1D432A5F1FA800A25433 /* SwiftMarkdownObjCBridge.swift */; };
 		1FC940BA2A5F21FD00FFFADE /* SwiftMarkdownObjCBridge.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1F0A1D432A5F1FA800A25433 /* SwiftMarkdownObjCBridge.swift */; };
+		1FCE3D532C9B5918009C68A9 /* SwiftyGif in Frameworks */ = {isa = PBXBuildFile; productRef = 1FCE3D522C9B5918009C68A9 /* SwiftyGif */; };
 		1FD6F83C2B825069004048AB /* NCRoomsManagerExtensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1FD6F83B2B825069004048AB /* NCRoomsManagerExtensions.swift */; };
 		1FD6F83E2B87B712004048AB /* NCUserStatusExtensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1FD6F83D2B87B712004048AB /* NCUserStatusExtensions.swift */; };
 		1FD8AE6B2A3A216300787C16 /* UIRoomTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1FD8AD8C2A3A162100787C16 /* UIRoomTest.swift */; };
@@ -1233,6 +1234,7 @@
 			files = (
 				2CA1CCCA1F17C503002FE6A2 /* AudioToolbox.framework in Frameworks */,
 				2CCCD21D2835088F00F076CE /* OpenSSL in Frameworks */,
+				1FCE3D532C9B5918009C68A9 /* SwiftyGif in Frameworks */,
 				1F90EFC725FE4BE700F3FA55 /* IntentsUI.framework in Frameworks */,
 				2CA1CC971F016117002FE6A2 /* Security.framework in Frameworks */,
 				1F45A1212A01D8BA005FE87D /* SDWebImageSVGKitPlugin in Frameworks */,
@@ -2236,6 +2238,7 @@
 				1FAB2E872ACD44D0001214EB /* WebRTC */,
 				80CDF8C32A8E098900CB57AE /* SwiftUIIntrospect */,
 				1F759C2B2B63CB93000534AB /* Realm */,
+				1FCE3D522C9B5918009C68A9 /* SwiftyGif */,
 			);
 			productName = NextcloudTalk;
 			productReference = 2C05747D1EDD9E8E00D9E7F2 /* NextcloudTalk.app */;
@@ -2393,6 +2396,7 @@
 				1FAB2E862ACD44CF001214EB /* XCRemoteSwiftPackageReference "talk-clients-webrtc" */,
 				80CDF8C22A8E098900CB57AE /* XCRemoteSwiftPackageReference "swiftui-introspect" */,
 				1F759C2A2B63CB93000534AB /* XCRemoteSwiftPackageReference "realm-swift-binary" */,
+				1FCE3D512C9B5918009C68A9 /* XCRemoteSwiftPackageReference "SwiftyGif" */,
 			);
 			productRefGroup = 2C05747E1EDD9E8E00D9E7F2 /* Products */;
 			projectDirPath = "";
@@ -4240,6 +4244,14 @@
 				revision = 5f15c82f4b02072c1595980580eade9325e1819f;
 			};
 		};
+		1FCE3D512C9B5918009C68A9 /* XCRemoteSwiftPackageReference "SwiftyGif" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/alexiscreuzot/SwiftyGif";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 5.4.5;
+			};
+		};
 		2CCCD21B2835088F00F076CE /* XCRemoteSwiftPackageReference "OpenSSL" */ = {
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/krzyzanowskim/OpenSSL";
@@ -4449,6 +4461,11 @@
 			package = 1FAB2E862ACD44CF001214EB /* XCRemoteSwiftPackageReference "talk-clients-webrtc" */;
 			productName = WebRTC;
 		};
+		1FCE3D522C9B5918009C68A9 /* SwiftyGif */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 1FCE3D512C9B5918009C68A9 /* XCRemoteSwiftPackageReference "SwiftyGif" */;
+			productName = SwiftyGif;
+		};
 		1FF136192BFBC841006A6101 /* SwiftyAttributes */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = 1F66B72D29FABD01003FB168 /* XCRemoteSwiftPackageReference "SwiftyAttributes" */;

NextcloudTalk/NCChatMessage.swift

@@ -257,4 +257,15 @@ import SwiftyAttributes
 
         return nil
     }
+
+    public var isAnimatableGif: Bool {
+        guard let accountId, let file = self.file() else { return false }
+
+        let capabilities = NCDatabaseManager.sharedInstance().serverCapabilities(forAccountId: accountId)
+
+        guard NCUtils.isGif(fileType: file.mimetype), let maxGifSize = capabilities?.maxGifSize, maxGifSize > 0 else { return false }
+
+        return file.size <= maxGifSize
+    }
+
 }

NextcloudTalk/NCDatabaseManager.m

@@ -16,7 +16,7 @@
 
 NSString *const kTalkDatabaseFolder                 = @"Library/Application Support/Talk";
 NSString *const kTalkDatabaseFileName               = @"talk.realm";
-uint64_t const kTalkDatabaseSchemaVersion           = 67;
+uint64_t const kTalkDatabaseSchemaVersion           = 68;
 
 NSString * const kCapabilitySystemMessages          = @"system-messages";
 NSString * const kCapabilityNotificationLevels      = @"notification-levels";
@@ -454,6 +454,13 @@ NSString * const NCDatabaseManagerRoomCapabilitiesChangedNotification = @"NCData
     } else {
         capabilities.federationOnlyTrustedServers = NO;
     }
+
+    NSDictionary *previewConfig = [talkConfig objectForKey:@"previews"];
+    NSArray *previewConfigKeys = [previewConfig allKeys];
+
+    if ([previewConfigKeys containsObject:@"max-gif-size"]) {
+        capabilities.maxGifSize = [[previewConfig objectForKey:@"max-gif-size"] intValue];
+    }
 }
 
 #pragma mark - Federated capabilities

NextcloudTalk/NCMediaViewerPageViewController.swift

@@ -5,6 +5,7 @@
 
 import Foundation
 import UIKit
+import SwiftyGif
 
 @objc protocol NCMediaViewerPageViewControllerDelegate {
     @objc func mediaViewerPageZoomDidChange(_ controller: NCMediaViewerPageViewController, _ scale: Double)
@@ -119,6 +120,7 @@ import UIKit
     }
 
     func showErrorView() {
+        self.imageView.image = nil
         self.view.addSubview(self.errorView)
 
         NSLayoutConstraint.activate([
@@ -130,25 +132,28 @@ import UIKit
     }
 
     // MARK: - NCChatFileController delegate
-
     func fileControllerDidLoadFile(_ fileController: NCChatFileController, with fileStatus: NCChatFileStatus) {
         self.activityIndicator.stopAnimating()
         self.activityIndicator.isHidden = true
 
-        if let localPath = fileStatus.fileLocalPath, let image = UIImage(contentsOfFile: localPath) {
-            self.imageView.image = image
-
-            // Adjust the view to the new image
-            self.zoomableView.contentViewSize = image.size
-            self.zoomableView.resizeContentView()
-
-            self.delegate?.mediaViewerPageImageDidLoad(self)
-        } else {
-            self.imageView.image = nil
+        guard let localPath = fileStatus.fileLocalPath, let image = UIImage(contentsOfFile: localPath) else {
             self.showErrorView()
-
-            print("Error in fileControllerDidLoadFile getting UIImage")
+            return
         }
+
+        if let file = message.file(), message.isAnimatableGif,
+           let data = try? Data(contentsOf: URL(fileURLWithPath: localPath)), let gifImage = try? UIImage(gifData: data) {
+
+            self.imageView.setGifImage(gifImage)
+        } else {
+            self.imageView.image = image
+        }
+
+        // Adjust the view to the new image (use the non-gif version here for correct dimensions)
+        self.zoomableView.contentViewSize = image.size
+        self.zoomableView.resizeContentView()
+
+        self.delegate?.mediaViewerPageImageDidLoad(self)
     }
 
     func fileControllerDidFailLoadingFile(_ fileController: NCChatFileController, withErrorDescription errorDescription: String) {

NextcloudTalk/NCUtils.swift

@@ -84,6 +84,10 @@ import AVFoundation
         return self.previewImage(forMimeType: fileType) == "file-vcard"
     }
 
+    public static func isGif(fileType: String) -> Bool {
+        return UTType(mimeType: fileType)?.conforms(to: .gif) ?? false
+    }
+
     public static func isNextcloudAppInstalled() -> Bool {
         var isInstalled = false
 

NextcloudTalk/TalkCapabilities.h

@@ -27,6 +27,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property BOOL federationIncomingEnabled;
 @property BOOL federationOutgoingEnabled;
 @property BOOL federationOnlyTrustedServers;
+@property NSInteger maxGifSize;
 
 @end