batch delete emoji reacts

Session/Conversations/ConversationVC+Interaction.swift

@@ -844,7 +844,9 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
     }
     
     func cancelAllReact(reactMessages: [ReactMessage]) {
-        
+        guard let groupThread = thread as? TSGroupThread, groupThread.isOpenGroup else { return }
+        guard let threadId = groupThread.uniqueId, let openGroupV2 = Storage.shared.getV2OpenGroup(for: threadId) else { return }
+        OpenGroupAPIV2.batchDeleteMessages(for: openGroupV2.room, on: openGroupV2.server, messageIds: reactMessages.compactMap{ $0.messageId })
     }
     
     private func react(_ viewItem: ConversationViewItem, with emoji: String, cancel: Bool) {

SessionMessagingKit/Open Groups/OpenGroupAPIV2.swift

@@ -368,6 +368,12 @@ public final class OpenGroupAPIV2 : NSObject {
         }
     }
     
+    public static func batchDeleteMessages(for room: String, on server: String, messageIds: [String]) -> Promise<Void> {
+        let json: JSON = ["ids": messageIds.compactMap{ Int($0) }]
+        let request = Request(verb: .post, room: room, server: server, endpoint: "delete_messages", parameters: json)
+        return send(request).map(on: OpenGroupAPIV2.workQueue) { _ in }
+    }
+    
     private static func parseDeletions(from rawDeletions: [JSON], for room: String, on server: String) -> Promise<[Deletion]> {
         let storage = SNMessagingKitConfiguration.shared.storage
         let deletions = rawDeletions.compactMap { Deletion.from($0) }