feat(dispatcher): deleted messages update

packages/dispatcher/scripts/update-types.txt

@@ -3,6 +3,7 @@
 raw: RawUpdate = IGNORE
 new_message = Message
 edit_message = Message
+delete_message = DeleteMessageUpdate
 chat_member: ChatMemberUpdate = ChatMemberUpdate
 inline_query = InlineQuery
 chosen_inline_result = ChosenInlineResult

packages/dispatcher/src/builders.ts

@@ -4,6 +4,7 @@ import {
     RawUpdateHandler,
     NewMessageHandler,
     EditMessageHandler,
+    DeleteMessageHandler,
     ChatMemberUpdateHandler,
     InlineQueryHandler,
     ChosenInlineResultHandler,
@@ -22,6 +23,7 @@ import { PollUpdate } from './updates/poll-update'
 import { PollVoteUpdate } from './updates/poll-vote'
 import { UserStatusUpdate } from './updates/user-status-update'
 import { UserTypingUpdate } from './updates/user-typing-update'
+import { DeleteMessageUpdate } from './updates/delete-message-update'
 
 function _create<T extends UpdateHandler>(
     type: T['type'],
@@ -123,6 +125,36 @@ export namespace handlers {
         return _create('edit_message', filter, handler)
     }
 
+    /**
+     * Create a delete message handler
+     *
+     * @param handler  Delete message handler
+     */
+    export function deleteMessage(
+        handler: DeleteMessageHandler['callback']
+    ): DeleteMessageHandler
+
+    /**
+     * Create a delete message handler with a filter
+     *
+     * @param filter  Update filter
+     * @param handler  Delete message handler
+     */
+    export function deleteMessage<Mod>(
+        filter: UpdateFilter<DeleteMessageUpdate, Mod>,
+        handler: DeleteMessageHandler<
+            filters.Modify<DeleteMessageUpdate, Mod>
+        >['callback']
+    ): DeleteMessageHandler
+
+    /** @internal */
+    export function deleteMessage(
+        filter: any,
+        handler?: any
+    ): DeleteMessageHandler {
+        return _create('delete_message', filter, handler)
+    }
+
     /**
      * Create a chat member update handler
      *

packages/dispatcher/src/dispatcher.ts

@@ -20,6 +20,7 @@ import {
     RawUpdateHandler,
     NewMessageHandler,
     EditMessageHandler,
+    DeleteMessageHandler,
     ChatMemberUpdateHandler,
     InlineQueryHandler,
     ChosenInlineResultHandler,
@@ -38,6 +39,7 @@ import { PollUpdate } from './updates/poll-update'
 import { PollVoteUpdate } from './updates/poll-vote'
 import { UserStatusUpdate } from './updates/user-status-update'
 import { UserTypingUpdate } from './updates/user-typing-update'
+import { DeleteMessageUpdate } from './updates/delete-message-update'
 
 const noop = () => {}
 
@@ -77,6 +79,10 @@ const userTypingParser: UpdateParser = [
     'user_typing',
     (client, upd) => new UserTypingUpdate(client, upd as any),
 ]
+const deleteMessageParser: UpdateParser = [
+    'delete_message',
+    (client, upd) => new DeleteMessageUpdate(client, upd as any)
+]
 
 const PARSERS: Partial<
     Record<(tl.TypeUpdate | tl.TypeMessage)['_'], UpdateParser>
@@ -117,6 +123,8 @@ const PARSERS: Partial<
     updateChannelUserTyping: userTypingParser,
     updateChatUserTyping: userTypingParser,
     updateUserTyping: userTypingParser,
+    updateDeleteChannelMessages: deleteMessageParser,
+    updateDeleteMessages: deleteMessageParser,
 }
 
 /**
@@ -503,6 +511,38 @@ export class Dispatcher {
         this._addKnownHandler('editMessage', filter, handler, group)
     }
 
+    /**
+     * Register a delete message handler without any filters
+     *
+     * @param handler  Delete message handler
+     * @param group  Handler group index
+     * @internal
+     */
+    onDeleteMessage(
+        handler: DeleteMessageHandler['callback'],
+        group?: number
+    ): void
+
+    /**
+     * Register a delete message handler with a filter
+     *
+     * @param filter  Update filter
+     * @param handler  Delete message handler
+     * @param group  Handler group index
+     */
+    onDeleteMessage<Mod>(
+        filter: UpdateFilter<DeleteMessageUpdate, Mod>,
+        handler: DeleteMessageHandler<
+            filters.Modify<DeleteMessageUpdate, Mod>
+        >['callback'],
+        group?: number
+    ): void
+
+    /** @internal */
+    onDeleteMessage(filter: any, handler?: any, group?: number): void {
+        this._addKnownHandler('deleteMessage', filter, handler, group)
+    }
+
     /**
      * Register a chat member update handler without any filters
      *

packages/dispatcher/src/handler.ts

@@ -15,6 +15,7 @@ import { PollUpdate } from './updates/poll-update'
 import { PollVoteUpdate } from './updates/poll-vote'
 import { UserStatusUpdate } from './updates/user-status-update'
 import { UserTypingUpdate } from './updates/user-typing-update'
+import { DeleteMessageUpdate } from './updates/delete-message-update'
 
 interface BaseUpdateHandler<Type, Handler, Checker> {
     type: Type
@@ -57,6 +58,10 @@ export type EditMessageHandler<T = Message> = ParsedUpdateHandler<
     'edit_message',
     T
 >
+export type DeleteMessageHandler<T = DeleteMessageUpdate> = ParsedUpdateHandler<
+    'delete_message',
+    T
+>
 export type ChatMemberUpdateHandler<T = ChatMemberUpdate> = ParsedUpdateHandler<
     'chat_member',
     T
@@ -90,6 +95,7 @@ export type UpdateHandler =
     | RawUpdateHandler
     | NewMessageHandler
     | EditMessageHandler
+    | DeleteMessageHandler
     | ChatMemberUpdateHandler
     | InlineQueryHandler
     | ChosenInlineResultHandler

packages/dispatcher/src/updates/delete-message-update.ts

@@ -0,0 +1,38 @@
+import { tl } from '@mtcute/tl'
+import { makeInspectable } from '@mtcute/client/src/types/utils'
+import { MAX_CHANNEL_ID } from '@mtcute/core'
+import { TelegramClient } from '@mtcute/client'
+
+/**
+ * One or more messages were deleted
+ */
+export class DeleteMessageUpdate {
+    readonly client: TelegramClient
+    readonly raw: tl.RawUpdateDeleteMessages | tl.RawUpdateDeleteChannelMessages
+
+    constructor(
+        client: TelegramClient,
+        raw: tl.RawUpdateDeleteMessages | tl.RawUpdateDeleteChannelMessages
+    ) {
+        this.client = client
+        this.raw = raw
+    }
+
+    /**
+     * IDs of the messages which were deleted
+     */
+    get messageIds(): number[] {
+        return this.raw.messages
+    }
+
+    /**
+     * Marked ID of the channel where the messages were deleted
+     */
+    get channelId(): number | null {
+        return this.raw._ === 'updateDeleteChannelMessages'
+            ? MAX_CHANNEL_ID - this.raw.channelId
+            : null
+    }
+}
+
+makeInspectable(DeleteMessageUpdate)