feat(client): support reactions

packages/client/src/client.ts

@@ -33,9 +33,11 @@ import {
     MaybeDynamic,
     Message,
     MessageMedia,
+    MessageReactions,
     ParsedUpdate,
     PartialExcept,
     PartialOnly,
+    PeerReaction,
     PeersIndex,
     Photo,
     Poll,
@@ -172,19 +174,23 @@ import {
 } from './methods/messages/get-discussion-message'
 import { getHistory } from './methods/messages/get-history'
 import { getMessageGroup } from './methods/messages/get-message-group'
+import { getMessageReactions } from './methods/messages/get-message-reactions'
 import { getMessagesUnsafe } from './methods/messages/get-messages-unsafe'
 import { getMessages } from './methods/messages/get-messages'
+import { getReactionUsers } from './methods/messages/get-reaction-users'
 import { getScheduledMessages } from './methods/messages/get-scheduled-messages'
 import { iterHistory } from './methods/messages/iter-history'
 import { _normalizeInline } from './methods/messages/normalize-inline'
 import { _parseEntities } from './methods/messages/parse-entities'
 import { pinMessage } from './methods/messages/pin-message'
 import { readHistory } from './methods/messages/read-history'
+import { readReactions } from './methods/messages/read-reactions'
 import { searchGlobal } from './methods/messages/search-global'
 import { searchMessages } from './methods/messages/search-messages'
 import { sendCopy } from './methods/messages/send-copy'
 import { sendMediaGroup } from './methods/messages/send-media-group'
 import { sendMedia } from './methods/messages/send-media'
+import { sendReaction } from './methods/messages/send-reaction'
 import { sendScheduled } from './methods/messages/send-scheduled'
 import { sendText } from './methods/messages/send-text'
 import { sendTyping } from './methods/messages/send-typing'
@@ -2430,6 +2436,36 @@ export interface TelegramClient extends BaseTelegramClient {
      * @param message  ID of one of the messages in the group
      */
     getMessageGroup(chatId: InputPeerLike, message: number): Promise<Message[]>
+    /**
+     * Get reactions to a message.
+     *
+     * > Apps should short-poll reactions for visible messages
+     * > (that weren't sent by the user) once every 15-30 seconds,
+     * > but only if `message.reactions` is set
+     *
+     * @param chatId  ID of the chat with the message
+     * @param messages  Message ID
+     * @returns  Reactions to the corresponding message, or `null` if there are none
+     */
+    getMessageReactions(
+        chatId: InputPeerLike,
+        messages: number
+    ): Promise<MessageReactions | null>
+    /**
+     * Get reactions to messages.
+     *
+     * > Apps should short-poll reactions for visible messages
+     * > (that weren't sent by the user) once every 15-30 seconds,
+     * > but only if `message.reactions` is set
+     *
+     * @param chatId  ID of the chat with messages
+     * @param messages  Message IDs
+     * @returns  Reactions to corresponding messages, or `null` if there are none
+     */
+    getMessageReactions(
+        chatId: InputPeerLike,
+        messages: number[]
+    ): Promise<(MessageReactions | null)[]>
     /**
      * Get a single message from PM or legacy group by its ID.
      * For channels, use {@link getMessages}.
@@ -2496,6 +2532,37 @@ export interface TelegramClient extends BaseTelegramClient {
         messageIds: number[],
         fromReply?: boolean
     ): Promise<(Message | null)[]>
+    /**
+     * Get users who have reacted to the message.
+     *
+     * @param chatId  Chat ID
+     * @param messageId  Message ID
+     * @param params
+     */
+    getReactionUsers(
+        chatId: InputPeerLike,
+        messageId: number,
+        params?: {
+            /**
+             * Get only reactions with the specified emoji
+             */
+            emoji?: string
+
+            /**
+             * Limit the number of events returned.
+             *
+             * Defaults to `Infinity`, i.e. all events are returned
+             */
+            limit?: number
+
+            /**
+             * Chunk size, usually not needed.
+             *
+             * Defaults to `100`
+             */
+            chunkSize?: number
+        }
+    ): AsyncIterableIterator<PeerReaction>
     /**
      * Get a single scheduled message in chat by its ID
      *
@@ -2603,6 +2670,12 @@ export interface TelegramClient extends BaseTelegramClient {
         message?: number,
         clearMentions?: boolean
     ): Promise<void>
+    /**
+     * Mark all reactions in chat as read.
+     *
+     * @param chatId  Chat ID
+     */
+    readReactions(chatId: InputPeerLike): Promise<void>
     /**
      * Search for messages globally from all of your chats
      *
@@ -2979,6 +3052,21 @@ export interface TelegramClient extends BaseTelegramClient {
             clearDraft?: boolean
         }
     ): Promise<Message>
+    /**
+     * Send or remove a reaction.
+     *
+     * @param chatId  Chat ID with the message to react to
+     * @param message  Message ID to react to
+     * @param emoji  Reaction emoji (or `null` to remove)
+     * @param big  (default: `false`) Whether to use a big reaction
+     * @returns  Message to which the reaction was sent
+     */
+    sendReaction(
+        chatId: InputPeerLike,
+        message: number,
+        emoji: string | null,
+        big?: boolean
+    ): Promise<Message>
     /**
      * Send s previously scheduled message.
      *
@@ -3891,19 +3979,23 @@ export class TelegramClient extends BaseTelegramClient {
     getDiscussionMessage = getDiscussionMessage
     getHistory = getHistory
     getMessageGroup = getMessageGroup
+    getMessageReactions = getMessageReactions
     getMessagesUnsafe = getMessagesUnsafe
     getMessages = getMessages
+    getReactionUsers = getReactionUsers
     getScheduledMessages = getScheduledMessages
     iterHistory = iterHistory
     protected _normalizeInline = _normalizeInline
     protected _parseEntities = _parseEntities
     pinMessage = pinMessage
     readHistory = readHistory
+    readReactions = readReactions
     searchGlobal = searchGlobal
     searchMessages = searchMessages
     sendCopy = sendCopy
     sendMediaGroup = sendMediaGroup
     sendMedia = sendMedia
+    sendReaction = sendReaction
     sendScheduled = sendScheduled
     sendText = sendText
     sendTyping = sendTyping

packages/client/src/methods/_imports.ts

@@ -55,6 +55,8 @@ import {
     BotStoppedUpdate,
     BotChatJoinRequestUpdate,
     ChatJoinRequestUpdate,
+    PeerReaction,
+    MessageReactions,
 } from '../types'
 
 // @copy

packages/client/src/methods/messages/get-message-reactions.ts

@@ -0,0 +1,95 @@
+import { TelegramClient } from '../../client'
+import { InputPeerLike, PeersIndex, MessageReactions } from '../../types'
+import { assertIsUpdatesGroup } from '../../utils/updates-utils'
+import { getMarkedPeerId, MaybeArray } from '@mtcute/core'
+import { assertTypeIs } from '../../utils/type-assertion'
+
+/**
+ * Get reactions to a message.
+ *
+ * > Apps should short-poll reactions for visible messages
+ * > (that weren't sent by the user) once every 15-30 seconds,
+ * > but only if `message.reactions` is set
+ *
+ * @param chatId  ID of the chat with the message
+ * @param messages  Message ID
+ * @returns  Reactions to the corresponding message, or `null` if there are none
+ * @internal
+ */
+export async function getMessageReactions(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    messages: number
+): Promise<MessageReactions | null>
+
+/**
+ * Get reactions to messages.
+ *
+ * > Apps should short-poll reactions for visible messages
+ * > (that weren't sent by the user) once every 15-30 seconds,
+ * > but only if `message.reactions` is set
+ *
+ * @param chatId  ID of the chat with messages
+ * @param messages  Message IDs
+ * @returns  Reactions to corresponding messages, or `null` if there are none
+ * @internal
+ */
+export async function getMessageReactions(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    messages: number[]
+): Promise<(MessageReactions | null)[]>
+
+/**
+ * @internal
+ */
+export async function getMessageReactions(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    messages: MaybeArray<number>
+): Promise<MaybeArray<MessageReactions | null>> {
+    const single = !Array.isArray(messages)
+    if (!Array.isArray(messages)) {
+        messages = [messages]
+    }
+
+    const res = await this.call({
+        _: 'messages.getMessagesReactions',
+        peer: await this.resolvePeer(chatId),
+        id: messages,
+    })
+
+    assertIsUpdatesGroup('messages.getMessagesReactions', res)
+
+    // normally the group contains updateMessageReactions
+    // for each message requested that has reactions
+    //
+    // these updates are not ordered in any way, so
+    // we don't need to pass them to updates engine
+
+    const index: Record<number, MessageReactions> = {}
+
+    const peers = PeersIndex.from(res)
+
+    for (const update of res.updates) {
+        assertTypeIs(
+            'messages.getMessagesReactions',
+            update,
+            'updateMessageReactions'
+        )
+
+        index[update.msgId] = new MessageReactions(
+            this,
+            update.msgId,
+            getMarkedPeerId(update.peer),
+            update.reactions,
+            peers
+        )
+    }
+
+    if (single) {
+        return index[messages[0]] ?? null
+    }
+
+    return messages.map((messageId) => index[messageId] ?? null)
+}

packages/client/src/methods/messages/get-reaction-users.ts

@@ -0,0 +1,77 @@
+import { TelegramClient } from '../../client'
+import {
+    InputPeerLike,
+    PeerReaction,
+    PeersIndex,
+} from '../../types'
+import { tl } from '@mtcute/tl'
+
+/**
+ * Get users who have reacted to the message.
+ *
+ * @param chatId  Chat ID
+ * @param messageId  Message ID
+ * @param params
+ * @internal
+ */
+export async function* getReactionUsers(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    messageId: number,
+    params?: {
+        /**
+         * Get only reactions with the specified emoji
+         */
+        emoji?: string
+
+        /**
+         * Limit the number of events returned.
+         *
+         * Defaults to `Infinity`, i.e. all events are returned
+         */
+        limit?: number
+
+        /**
+         * Chunk size, usually not needed.
+         *
+         * Defaults to `100`
+         */
+        chunkSize?: number
+    }
+): AsyncIterableIterator<PeerReaction> {
+    if (!params) params = {}
+
+    const peer = await this.resolvePeer(chatId)
+
+    let current = 0
+    let offset: string | undefined = undefined
+    const total = params.limit || Infinity
+    const chunkSize = Math.min(params.chunkSize ?? 100, total)
+
+    for (;;) {
+        const res: tl.RpcCallReturn['messages.getMessageReactionsList'] =
+            await this.call({
+                _: 'messages.getMessageReactionsList',
+                peer,
+                id: messageId,
+                reaction: params.emoji,
+                limit: Math.min(chunkSize, total - current),
+                offset,
+            })
+
+        if (!res.reactions.length) break
+
+        offset = res.nextOffset
+
+        const peers = PeersIndex.from(res)
+
+        for (const reaction of res.reactions) {
+            const parsed = new PeerReaction(this, reaction, peers)
+
+            current += 1
+            yield parsed
+
+            if (current >= total) break
+        }
+    }
+}

packages/client/src/methods/messages/read-reactions.ts

@@ -0,0 +1,20 @@
+import { TelegramClient } from '../../client'
+import { InputPeerLike } from '../../types'
+import { createDummyUpdate } from '../../utils/updates-utils'
+
+/**
+ * Mark all reactions in chat as read.
+ *
+ * @param chatId  Chat ID
+ * @internal
+ */
+export async function readReactions(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+): Promise<void> {
+    const res = await this.call({
+        _: 'messages.readReactions',
+        peer: await this.resolvePeer(chatId)
+    })
+    this._handleUpdate(createDummyUpdate(res.pts, res.ptsCount))
+}

packages/client/src/methods/messages/send-reaction.ts

@@ -0,0 +1,60 @@
+import { TelegramClient } from '../../client'
+import {
+    InputPeerLike,
+    Message,
+    MtTypeAssertionError,
+    PeersIndex,
+} from '../../types'
+import { assertIsUpdatesGroup } from '../../utils/updates-utils'
+import { tl } from '@mtcute/tl'
+
+/**
+ * Send or remove a reaction.
+ *
+ * @param chatId  Chat ID with the message to react to
+ * @param message  Message ID to react to
+ * @param emoji  Reaction emoji (or `null` to remove)
+ * @param big  Whether to use a big reaction
+ * @returns  Message to which the reaction was sent
+ * @internal
+ */
+export async function sendReaction(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    message: number,
+    emoji: string | null,
+    big = false
+): Promise<Message> {
+    const res = await this.call({
+        _: 'messages.sendReaction',
+        peer: await this.resolvePeer(chatId),
+        msgId: message,
+        reaction: emoji ?? undefined,
+        big,
+    })
+
+    assertIsUpdatesGroup('messages.sendReaction', res)
+
+    // normally the group contains 2 updates:
+    // updateEditChannelMessage
+    // updateMessageReactions
+    // idk why, they contain literally the same data
+    // so we can just return the message from the first one
+
+    this._handleUpdate(res, true)
+
+    const upd = res.updates.find(
+        (it) => it._ === 'updateEditChannelMessage'
+    ) as tl.RawUpdateEditChannelMessage | undefined
+    if (!upd) {
+        throw new MtTypeAssertionError(
+            'messages.sendReaction (@ .updates[*])',
+            'updateEditChannelMessage',
+            'undefined'
+        )
+    }
+
+    const peers = PeersIndex.from(res)
+
+    return new Message(this, upd.message, peers)
+}

packages/client/src/types/messages/index.ts

@@ -5,3 +5,4 @@ export * from './message'
 export * from './search-filters'
 export * from './draft-message'
 export * from './dialog'
+export * from './reactions'

packages/client/src/types/messages/message.ts

@@ -1,11 +1,8 @@
 import { User, Chat, InputPeerLike, PeersIndex } from '../peers'
 import { tl } from '@mtcute/tl'
 import { BotKeyboard, ReplyMarkup } from '../bots'
-import { assertNever, getMarkedPeerId, toggleChannelIdMark } from "@mtcute/core";
-import {
-    MtArgumentError,
-    MtTypeAssertionError,
-} from '../errors'
+import { assertNever, getMarkedPeerId, toggleChannelIdMark } from '@mtcute/core'
+import { MtArgumentError, MtTypeAssertionError } from '../errors'
 import { TelegramClient } from '../../client'
 import { MessageEntity } from './message-entity'
 import { makeInspectable } from '../utils'
@@ -13,6 +10,7 @@ import { InputMediaLike, WebPage } from '../media'
 import { _messageActionFromTl, MessageAction } from './message-action'
 import { _messageMediaFromTl, MessageMedia } from './message-media'
 import { FormattedString } from '../parser'
+import { MessageReactions } from './reactions'
 
 /**
  * A message or a service message
@@ -314,7 +312,7 @@ export class Message {
             }
 
             if (r.comments) {
-                const o = (obj as unknown) as Message.MessageCommentsInfo
+                const o = obj as unknown as Message.MessageCommentsInfo
                 o.discussion = getMarkedPeerId(r.channelId!, 'channel')
                 o.repliers =
                     r.recentRepliers?.map((it) => getMarkedPeerId(it)) ?? []
@@ -490,6 +488,34 @@ export class Message {
         return this._markup
     }
 
+    /**
+     * Whether this message can be forwarded
+     *
+     * `false` for service mesasges and private restricted chats/chanenls
+     */
+    get canBeForwarded(): boolean {
+        return this.raw._ === 'message' && !this.raw.noforwards
+    }
+
+    private _reactions?: MessageReactions | null
+    get reactions(): MessageReactions | null {
+        if (this._reactions === undefined) {
+            if (this.raw._ === 'messageService' || !this.raw.reactions) {
+                this._reactions = null
+            } else {
+                this._reactions = new MessageReactions(
+                    this.client,
+                    this.raw.id,
+                    getMarkedPeerId(this.raw.peerId),
+                    this.raw.reactions,
+                    this._peers
+                )
+            }
+        }
+
+        return this._reactions
+    }
+
     /**
      * Generated permalink to this message, only for groups and channels
      *
@@ -892,6 +918,21 @@ export class Message {
             clearMentions
         )
     }
+
+    /**
+     * React to this message
+     *
+     * @param emoji  Reaction emoji
+     * @param big  Whether to use a big reaction
+     */
+    async react(emoji: string | null, big?: boolean): Promise<Message> {
+        return this.client.sendReaction(
+            this.chat.inputPeer,
+            this.raw.id,
+            emoji,
+            big
+        )
+    }
 }
 
 makeInspectable(Message, ['isScheduled'], ['link'])

packages/client/src/types/messages/reactions.ts

@@ -0,0 +1,118 @@
+import { TelegramClient } from '../../client'
+import { tl } from '@mtcute/tl'
+import { makeInspectable } from '../utils'
+import { getMarkedPeerId } from '@mtcute/core'
+import { PeersIndex, User } from '../peers'
+import { assertTypeIs } from '../../utils/type-assertion'
+
+export class PeerReaction {
+    constructor(
+        readonly client: TelegramClient,
+        readonly raw: tl.RawMessagePeerReaction,
+        readonly _peers: PeersIndex
+    ) {}
+
+    /**
+     * Emoji representing the reaction
+     */
+    get emoji(): string {
+        return this.raw.reaction!
+    }
+
+    /**
+     * Whether this is a big reaction
+     */
+    get big(): boolean {
+        return this.raw.big!
+    }
+
+    /**
+     * Whether this reaction is unread by the current user
+     */
+    get unread(): boolean {
+        return this.raw.unread!
+    }
+
+    /**
+     * ID of the user who has reacted
+     */
+    get userId(): number {
+        return getMarkedPeerId(this.raw.peerId)
+    }
+
+    private _user?: User
+
+    /**
+     * User who has reacted
+     */
+    get user(): User {
+        if (!this._user) {
+            assertTypeIs('PeerReaction#user', this.raw.peerId, 'peerUser')
+
+            this._user = new User(
+                this.client,
+                this._peers.user(this.raw.peerId.userId)
+            )
+        }
+
+        return this._user
+    }
+}
+
+makeInspectable(PeerReaction)
+
+export class MessageReactions {
+    constructor(
+        readonly client: TelegramClient,
+        readonly messageId: number,
+        readonly chatId: number,
+        readonly raw: tl.RawMessageReactions,
+        readonly _peers: PeersIndex
+    ) {}
+
+    /**
+     * Whether you can use {@link getUsers}
+     * (or {@link TelegramClient.getReactionUsers})
+     * to get the users who reacted to this message
+     */
+    get usersVisible(): boolean {
+        return this.raw.canSeeList!
+    }
+
+    /**
+     * Reactions on the message, along with their counts
+     */
+    get reactions(): tl.TypeReactionCount[] {
+        return this.raw.results
+    }
+
+    private _recentReactions?: PeerReaction[]
+
+    /**
+     * Recently reacted users.
+     * To get a full list of users, use {@link getUsers}
+     */
+    get recentReactions(): PeerReaction[] {
+        if (!this.raw.recentReactions) {
+            return []
+        }
+
+        if (!this._recentReactions) {
+            this._recentReactions = this.raw.recentReactions.map(
+                (reaction) =>
+                    new PeerReaction(this.client, reaction, this._peers)
+            )
+        }
+
+        return this._recentReactions
+    }
+
+    /**
+     * Get the users who reacted to this message
+     */
+    getUsers(params?: Parameters<TelegramClient['getReactionUsers']>[2]): AsyncIterableIterator<PeerReaction> {
+        return this.client.getReactionUsers(this.messageId, this.chatId, params)
+    }
+}
+
+makeInspectable(MessageReactions)