Add tap/click event. Improve Swift/ObjC bridging.

Riot/Managers/Analytics/DecryptionFailure.swift

@@ -0,0 +1,40 @@
+// 
+// Copyright 2021 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
+
+/// Failure reasons as defined in https://docs.google.com/document/d/1es7cTCeJEXXfRCTRgZerAM2Wg5ZerHjvlpfTW-gsOfI.
+@objc enum DecryptionFailureReason: Int {
+    case unspecified
+    case olmKeysNotSent
+    case olmIndexError
+    case unexpected
+}
+
+/// `DecryptionFailure` represents a decryption failure.
+@objcMembers class DecryptionFailure: NSObject {
+    /// The id of the event that was unabled to decrypt.
+    let failedEventId: String
+    /// The time the failure has been reported.
+    let ts: TimeInterval = Date().timeIntervalSince1970
+    /// Decryption failure reason.
+    let reason: DecryptionFailureReason
+    
+    init(failedEventId: String, reason: DecryptionFailureReason) {
+        self.failedEventId = failedEventId
+        self.reason = reason
+    }
+}