feat(dispatcher): history read update

also fixed imports/exports

packages/dispatcher/scripts/update-types.txt

@@ -12,3 +12,4 @@ poll: PollUpdate = PollUpdate
 poll_vote = PollVoteUpdate
 user_status: UserStatusUpdate = UserStatusUpdate
 user_typing = UserTypingUpdate
+history_read = HistoryReadUpdate

packages/dispatcher/src/builders.ts

@@ -14,17 +14,21 @@ import {
     PollVoteHandler,
     UserStatusUpdateHandler,
     UserTypingHandler,
+    HistoryReadHandler,
 } from './handler'
 // end-codegen-imports
 import { filters, UpdateFilter } from './filters'
 import { CallbackQuery, InlineQuery, Message } from '@mtcute/client'
-import { ChatMemberUpdate } from './updates'
+import {
-import { ChosenInlineResult } from './updates/chosen-inline-result'
+    ChatMemberUpdate,
-import { PollUpdate } from './updates/poll-update'
+    ChosenInlineResult,
-import { PollVoteUpdate } from './updates/poll-vote'
+    PollUpdate,
-import { UserStatusUpdate } from './updates/user-status-update'
+    PollVoteUpdate,
-import { UserTypingUpdate } from './updates/user-typing-update'
+    UserStatusUpdate,
-import { DeleteMessageUpdate } from './updates/delete-message-update'
+    UserTypingUpdate,
+    DeleteMessageUpdate,
+    HistoryReadUpdate,
+} from './updates'
 
 function _create<T extends UpdateHandler>(
     type: T['type'],
@@ -385,5 +389,35 @@ export namespace handlers {
         return _create('user_typing', filter, handler)
     }
 
+    /**
+     * Create a history read handler
+     *
+     * @param handler  History read handler
+     */
+    export function historyRead(
+        handler: HistoryReadHandler['callback']
+    ): HistoryReadHandler
+
+    /**
+     * Create a history read handler with a filter
+     *
+     * @param filter  Update filter
+     * @param handler  History read handler
+     */
+    export function historyRead<Mod>(
+        filter: UpdateFilter<HistoryReadUpdate, Mod>,
+        handler: HistoryReadHandler<
+            filters.Modify<HistoryReadUpdate, Mod>
+        >['callback']
+    ): HistoryReadHandler
+
+    /** @internal */
+    export function historyRead(
+        filter: any,
+        handler?: any
+    ): HistoryReadHandler {
+        return _create('history_read', filter, handler)
+    }
+
     // end-codegen
 }

packages/dispatcher/src/dispatcher.ts

@@ -25,18 +25,22 @@ import {
     PollVoteHandler,
     UserStatusUpdateHandler,
     UserTypingHandler,
+    HistoryReadHandler,
 } from './handler'
 // end-codegen-imports
 import { UpdateInfo } from './handler'
 import { filters, UpdateFilter } from './filters'
 import { handlers } from './builders'
-import { ChatMemberUpdate } from './updates'
+import {
-import { ChosenInlineResult } from './updates/chosen-inline-result'
+    ChatMemberUpdate,
-import { PollUpdate } from './updates/poll-update'
+    ChosenInlineResult,
-import { PollVoteUpdate } from './updates/poll-vote'
+    PollUpdate,
-import { UserStatusUpdate } from './updates/user-status-update'
+    PollVoteUpdate,
-import { UserTypingUpdate } from './updates/user-typing-update'
+    UserStatusUpdate,
-import { DeleteMessageUpdate } from './updates/delete-message-update'
+    UserTypingUpdate,
+    DeleteMessageUpdate,
+    HistoryReadUpdate,
+} from './updates'
 import { IStateStorage, UpdateState, StateKeyDelegate } from './state'
 import { defaultStateKeyDelegate } from './state'
 import { PropagationAction } from './propagation'
@@ -85,6 +89,10 @@ const deleteMessageParser: UpdateParser = [
     'delete_message',
     (client, upd) => new DeleteMessageUpdate(client, upd as any),
 ]
+const historyReadParser: UpdateParser = [
+    'history_read',
+    (client, upd) => new HistoryReadUpdate(client, upd as any),
+]
 
 const PARSERS: Partial<
     Record<(tl.TypeUpdate | tl.TypeMessage)['_'], UpdateParser>
@@ -127,6 +135,12 @@ const PARSERS: Partial<
     updateUserTyping: userTypingParser,
     updateDeleteChannelMessages: deleteMessageParser,
     updateDeleteMessages: deleteMessageParser,
+    updateReadHistoryInbox: historyReadParser,
+    updateReadHistoryOutbox: historyReadParser,
+    updateReadChannelInbox: historyReadParser,
+    updateReadChannelOutbox: historyReadParser,
+    updateReadChannelDiscussionInbox: historyReadParser,
+    updateReadChannelDiscussionOutbox: historyReadParser,
 }
 
 const HANDLER_TYPE_TO_UPDATE: Record<string, string[]> = {}
@@ -138,7 +152,9 @@ Object.keys(PARSERS).forEach((upd: keyof typeof PARSERS) => {
 })
 
 export declare interface Dispatcher<
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     State = never,
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     SceneName extends string = string
 > {
     on<T = {}>(
@@ -247,6 +263,14 @@ export declare interface Dispatcher<
      */
     on(name: 'user_typing', handler: UserTypingHandler['callback']): this
 
+    /**
+     * Register a plain old history read handler
+     *
+     * @param name  Event name
+     * @param handler  History read handler
+     */
+    on(name: 'history_read', handler: HistoryReadHandler['callback']): this
+
     // end-codegen-declare
 }
 
@@ -1674,5 +1698,33 @@ export class Dispatcher<
         this._addKnownHandler('userTyping', filter, handler, group)
     }
 
+    /**
+     * Register a history read handler without any filters
+     *
+     * @param handler  History read handler
+     * @param group  Handler group index
+     */
+    onHistoryRead(handler: HistoryReadHandler['callback'], group?: number): void
+
+    /**
+     * Register a history read handler with a filter
+     *
+     * @param filter  Update filter
+     * @param handler  History read handler
+     * @param group  Handler group index
+     */
+    onHistoryRead<Mod>(
+        filter: UpdateFilter<HistoryReadUpdate, Mod>,
+        handler: HistoryReadHandler<
+            filters.Modify<HistoryReadUpdate, Mod>
+        >['callback'],
+        group?: number
+    ): void
+
+    /** @internal */
+    onHistoryRead(filter: any, handler?: any, group?: number): void {
+        this._addKnownHandler('historyRead', filter, handler, group)
+    }
+
     // end-codegen
 }

packages/dispatcher/src/handler.ts

@@ -9,13 +9,16 @@ import {
 } from '@mtcute/client'
 import { tl } from '@mtcute/tl'
 import { PropagationAction } from './propagation'
-import { ChatMemberUpdate } from './updates'
+import {
-import { ChosenInlineResult } from './updates/chosen-inline-result'
+    ChatMemberUpdate,
-import { PollUpdate } from './updates/poll-update'
+    ChosenInlineResult,
-import { PollVoteUpdate } from './updates/poll-vote'
+    PollUpdate,
-import { UserStatusUpdate } from './updates/user-status-update'
+    PollVoteUpdate,
-import { UserTypingUpdate } from './updates/user-typing-update'
+    UserStatusUpdate,
-import { DeleteMessageUpdate } from './updates/delete-message-update'
+    UserTypingUpdate,
+    DeleteMessageUpdate,
+    HistoryReadUpdate,
+} from './updates'
 
 interface BaseUpdateHandler<Type, Handler, Checker> {
     type: Type
@@ -96,6 +99,10 @@ export type UserTypingHandler<T = UserTypingUpdate> = ParsedUpdateHandler<
     'user_typing',
     T
 >
+export type HistoryReadHandler<T = HistoryReadUpdate> = ParsedUpdateHandler<
+    'history_read',
+    T
+>
 
 export type UpdateHandler =
     | RawUpdateHandler
@@ -110,5 +117,6 @@ export type UpdateHandler =
     | PollVoteHandler
     | UserStatusUpdateHandler
     | UserTypingHandler
+    | HistoryReadHandler
 
 // end-codegen

packages/dispatcher/src/updates/history-read-update.ts

@@ -0,0 +1,123 @@
+import { tl } from '@mtcute/tl'
+import { TelegramClient } from '@mtcute/client'
+import { getMarkedPeerId, MAX_CHANNEL_ID } from '@mtcute/core'
+import { makeInspectable } from '@mtcute/client/src/types/utils'
+
+export class HistoryReadUpdate {
+    constructor (
+        readonly client: TelegramClient,
+        readonly raw:
+            | tl.RawUpdateReadHistoryInbox
+            | tl.RawUpdateReadHistoryOutbox
+            | tl.RawUpdateReadChannelInbox
+            | tl.RawUpdateReadChannelOutbox
+            | tl.RawUpdateReadChannelDiscussionInbox
+            | tl.RawUpdateReadChannelDiscussionOutbox
+    ) {}
+
+    /**
+     * Whether this update is about an "outbox" read
+     * (i.e. a message you have sent earlier was read)
+     */
+    get isOutbox(): boolean {
+        switch (this.raw._) {
+            case 'updateReadChannelDiscussionOutbox':
+            case 'updateReadHistoryOutbox':
+            case 'updateReadChannelOutbox':
+                return true
+            default:
+                return false
+        }
+    }
+
+    /**
+     * Whether this update is about messages in a discussion group
+     * (e.g. from a comments thread)
+     */
+    get isDiscussion(): boolean {
+        switch (this.raw._) {
+            case 'updateReadChannelDiscussionOutbox':
+            case 'updateReadChannelDiscussionInbox':
+                return true
+            default:
+                return false
+        }
+    }
+
+    /**
+     * Marked peer ID of the chat where the messages were read.
+     *
+     * If `isDiscussion == true`, contains the discussion group.
+     */
+    get chatId(): number {
+        switch (this.raw._) {
+            case 'updateReadHistoryOutbox':
+            case 'updateReadHistoryInbox':
+                return getMarkedPeerId(this.raw.peer)
+            case 'updateReadChannelOutbox':
+            case 'updateReadChannelInbox':
+            case 'updateReadChannelDiscussionOutbox':
+            case 'updateReadChannelDiscussionInbox':
+                return MAX_CHANNEL_ID - this.raw.channelId
+        }
+    }
+
+    /**
+     * For inbox updates (i.e. `isOutbox = false`),
+     * number of messages that are still unread in the chat.
+     *
+     * For other updates, `0`
+     */
+    get unreadCount(): number {
+        switch (this.raw._) {
+            case 'updateReadHistoryInbox':
+            case 'updateReadChannelInbox':
+                return this.raw.stillUnreadCount
+            // `updateReadChannelDiscussionInbox` does not contain that data for some reason
+            case 'updateReadChannelDiscussionInbox':
+            case 'updateReadHistoryOutbox':
+            case 'updateReadChannelOutbox':
+            case 'updateReadChannelDiscussionOutbox':
+                return 0
+        }
+    }
+
+    /**
+     * ID of the last read message.
+     *
+     * Note that if `isDiscussion == true`, this contains the ID of the
+     * last read message inside that thread, and not in the group itself.
+     */
+    get maxReadId(): number {
+        switch (this.raw._) {
+            case 'updateReadHistoryOutbox':
+            case 'updateReadHistoryInbox':
+            case 'updateReadChannelOutbox':
+            case 'updateReadChannelInbox':
+                return this.raw.maxId
+            case 'updateReadChannelDiscussionOutbox':
+            case 'updateReadChannelDiscussionInbox':
+                return this.raw.readMaxId
+        }
+    }
+
+    /**
+     * ID of the thread (i.e. ID of the top message).
+     *
+     * For non-discussion updates, 0.
+     */
+    get threadId(): number {
+        switch (this.raw._) {
+            case 'updateReadHistoryOutbox':
+            case 'updateReadHistoryInbox':
+            case 'updateReadChannelOutbox':
+            case 'updateReadChannelInbox':
+                return 0
+            case 'updateReadChannelDiscussionOutbox':
+            case 'updateReadChannelDiscussionInbox':
+                return this.raw.topMsgId
+        }
+    }
+}
+
+makeInspectable(HistoryReadUpdate)

packages/dispatcher/src/updates/index.ts

@@ -1 +1,8 @@
 export * from './chat-member-update'
+export * from './chosen-inline-result'
+export * from './delete-message-update'
+export * from './poll-update'
+export * from './poll-vote'
+export * from './user-status-update'
+export * from './user-typing-update'
+export * from './history-read-update'