Add support for new ban and delete all endpoint

Session/Conversations/Context Menu/ContextMenuVC+Action.swift

@@ -35,6 +35,11 @@ extension ContextMenuVC {
             let title = "Ban User"
             return Action(icon: UIImage(named: "ic_block")!, title: title) { delegate?.ban(viewItem) }
         }
+        
+        static func banAndDeleteAllMessages(_ viewItem: ConversationViewItem, _ delegate: ContextMenuActionDelegate?) -> Action {
+            let title = "Ban and Delete All"
+            return Action(icon: UIImage(named: "ic_block")!, title: title) { delegate?.banAndDeleteAllMessages(viewItem) }
+        }
     }
 
     static func actions(for viewItem: ConversationViewItem, delegate: ContextMenuActionDelegate?) -> [Action] {
@@ -53,7 +58,10 @@ extension ContextMenuVC {
             let isGroup = viewItem.isGroupThread
             if isGroup && viewItem.interaction is TSIncomingMessage { result.append(Action.copySessionID(viewItem, delegate)) }
             if !isGroup || viewItem.userCanDeleteGroupMessage { result.append(Action.delete(viewItem, delegate)) }
-            if isGroup && viewItem.interaction is TSIncomingMessage && viewItem.userHasModerationPermission { result.append(Action.ban(viewItem, delegate)) }
+            if isGroup && viewItem.interaction is TSIncomingMessage && viewItem.userHasModerationPermission {
+                result.append(Action.ban(viewItem, delegate))
+                result.append(Action.banAndDeleteAllMessages(viewItem, delegate))
+            }
             return result
         case .mediaMessage, .audio, .genericAttachment:
             var result: [Action] = []
@@ -63,7 +71,10 @@ extension ContextMenuVC {
             let isGroup = viewItem.isGroupThread
             if isGroup && viewItem.interaction is TSIncomingMessage { result.append(Action.copySessionID(viewItem, delegate)) }
             if !isGroup || viewItem.userCanDeleteGroupMessage { result.append(Action.delete(viewItem, delegate)) }
-            if isGroup && viewItem.interaction is TSIncomingMessage && viewItem.userHasModerationPermission { result.append(Action.ban(viewItem, delegate)) }
+            if isGroup && viewItem.interaction is TSIncomingMessage && viewItem.userHasModerationPermission {
+                result.append(Action.ban(viewItem, delegate))
+                result.append(Action.banAndDeleteAllMessages(viewItem, delegate))
+            }
             return result
         default: return []
         }
@@ -79,4 +90,5 @@ protocol ContextMenuActionDelegate : class {
     func delete(_ viewItem: ConversationViewItem)
     func save(_ viewItem: ConversationViewItem)
     func ban(_ viewItem: ConversationViewItem)
+    func banAndDeleteAllMessages(_ viewItem: ConversationViewItem)
 }

Session/Conversations/ConversationVC+Interaction.swift

@@ -532,7 +532,8 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
     
     func ban(_ viewItem: ConversationViewItem) {
         guard let message = viewItem.interaction as? TSIncomingMessage, message.isOpenGroupMessage else { return }
-        let alert = UIAlertController(title: "Ban This User?", message: nil, preferredStyle: .alert)
+        let explanation = "This will ban the selected user from this room. It won't ban them from other rooms."
+        let alert = UIAlertController(title: "Session", message: explanation, preferredStyle: .alert)
         let threadID = thread.uniqueId!
         alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
             let publicKey = message.authorId
@@ -543,6 +544,20 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
         present(alert, animated: true, completion: nil)
     }
     
+    func banAndDeleteAllMessages(_ viewItem: ConversationViewItem) {
+        guard let message = viewItem.interaction as? TSIncomingMessage, message.isOpenGroupMessage else { return }
+        let explanation = "This will ban the selected user from this room and delete all messages sent by them. It won't ban them from other rooms or delete the messages they sent there."
+        let alert = UIAlertController(title: "Session", message: explanation, preferredStyle: .alert)
+        let threadID = thread.uniqueId!
+        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
+            let publicKey = message.authorId
+            guard let openGroupV2 = Storage.shared.getV2OpenGroup(for: threadID) else { return }
+            OpenGroupAPIV2.banAndDeleteAllMessages(publicKey, from: openGroupV2.room, on: openGroupV2.server).retainUntilComplete()
+        }))
+        alert.addAction(UIAlertAction(title: "Cancel", style: .default, handler: nil))
+        present(alert, animated: true, completion: nil)
+    }
+
     func handleQuoteViewCancelButtonTapped() {
         snInputView.quoteDraftInfo = nil
     }

SessionMessagingKit/Open Groups/OpenGroupAPIV2.swift

@@ -406,6 +406,12 @@ public final class OpenGroupAPIV2 : NSObject {
         return send(request).map(on: OpenGroupAPIV2.workQueue) { _ in }
     }
     
+    public static func banAndDeleteAllMessages(_ publicKey: String, from room: String, on server: String) -> Promise<Void> {
+        let parameters = [ "public_key" : publicKey ]
+        let request = Request(verb: .post, room: room, server: server, endpoint: "ban_and_delete_all", parameters: parameters)
+        return send(request).map(on: OpenGroupAPIV2.workQueue) { _ in }
+    }
+    
     public static func unban(_ publicKey: String, from room: String, on server: String) -> Promise<Void> {
         let request = Request(verb: .delete, room: room, server: server, endpoint: "block_list/\(publicKey)")
         return send(request).map(on: OpenGroupAPIV2.workQueue) { _ in }