Include channel message length limit data

app/Models/Chat/Channel.php

@@ -402,6 +402,13 @@ public function isValid()
         return $this->validationErrors()->isEmpty();
     }
 
+    public function messageLengthLimit(): int
+    {
+        return $this->isAnnouncement()
+            ? static::ANNOUNCE_MESSAGE_LENGTH_LIMIT
+            : config('osu.chat.message_length_limit');
+    }
+
     public function multiplayerMatch()
     {
         return $this->belongsTo(LegacyMatch::class, 'match_id');
@@ -430,7 +437,7 @@ public function receiveMessage(User $sender, ?string $content, bool $isAction =
             throw new API\ChatMessageEmptyException(osu_trans('api.error.chat.empty'));
         }
 
-        $maxLength = $this->isAnnouncement() ? static::ANNOUNCE_MESSAGE_LENGTH_LIMIT : config('osu.chat.message_length_limit');
+        $maxLength = $this->messageLengthLimit();
         if (mb_strlen($content, 'UTF-8') > $maxLength) {
             throw new API\ChatMessageTooLongException(osu_trans('api.error.chat.too_long'));
         }

app/Transformers/Chat/ChannelTransformer.php

@@ -46,6 +46,7 @@ public function transform(Channel $channel)
             'channel_id' => $channel->channel_id,
             'description' => $channel->description,
             'icon' => $channel->displayIconFor($this->user),
+            'message_length_limit' => $channel->messageLengthLimit(),
             'moderated' => $channel->moderated,
             'name' => $channel->displayNameFor($this->user),
             'type' => $channel->type,

resources/js/chat/input-box.tsx

@@ -7,7 +7,8 @@ import BigButton from 'components/big-button';
 import { trim } from 'lodash';
 import { action, autorun, computed, makeObservable, reaction } from 'mobx';
 import { disposeOnUnmount, observer } from 'mobx-react';
-import Message, { maxLength } from 'models/chat/message';
+import { maxMessageLength } from 'models/chat/channel';
+import Message from 'models/chat/message';
 import core from 'osu-core-singleton';
 import * as React from 'react';
 import TextareaAutosize from 'react-autosize-textarea';
@@ -112,7 +113,7 @@ export default class InputBox extends React.Component<Props> {
           autoComplete='off'
           className={classWithModifiers('chat-input__box', { disabled: this.inputDisabled })}
           disabled={this.inputDisabled}
-          maxLength={maxLength}
+          maxLength={channel?.messageLengthLimit ?? maxMessageLength}
           maxRows={channel?.type === 'ANNOUNCE' ? 10 : 3}
           name='textbox'
           onChange={this.handleChange}

resources/js/interfaces/chat/channel-json.ts

@@ -21,6 +21,7 @@ export default interface ChannelJson {
   description?: string;
   icon?: string;
   last_message_id?: number;
+  message_length_limit: number;
   name: string;
   type: ChannelType;
   users?: number[];

resources/js/models/chat/channel.ts

@@ -12,6 +12,8 @@ import Message from './message';
 
 const hideableChannelTypes: Set<ChannelType> = new Set(['ANNOUNCE', 'PM']);
 
+export const maxMessageLength = 1024;
+
 export default class Channel {
   private static readonly defaultIcon = '/images/layout/chat/channel-default.png'; // TODO: update with channel-specific icons?
 
@@ -24,6 +26,7 @@ export default class Channel {
   @observable lastReadId?: number;
   @observable loadingEarlierMessages = false;
   @observable loadingMessages = false;
+  @observable messageLengthLimit = maxMessageLength;
   @observable name = '';
   needsRefresh = true;
   @observable newPmChannel = false;
@@ -261,6 +264,7 @@ export default class Channel {
     this.description = json.description;
     this.type = json.type;
     this.icon = json.icon ?? Channel.defaultIcon;
+    this.messageLengthLimit = json.message_length_limit;
     this.userIds = json.users ?? this.userIds;
 
     this.serverLastMessageId = json.last_message_id;

resources/js/models/chat/create-announcement.ts

@@ -10,7 +10,7 @@ import core from 'osu-core-singleton';
 import { onError } from 'utils/ajax';
 import { uuid } from 'utils/seq';
 import { presence, present } from 'utils/string';
-import { maxLength } from './message';
+import { maxMessageLength } from './channel';
 
 interface LocalStorageProps extends Record<InputKey, string> {
   validUsers: number[];
@@ -23,7 +23,7 @@ const localStorageKey = 'createAnnouncement';
 
 export const maxLengths = Object.freeze({
   description: 255,
-  message: maxLength,
+  message: maxMessageLength,
   name: 50,
 });
 

resources/js/models/chat/message.ts

@@ -8,8 +8,6 @@ import * as moment from 'moment';
 import core from 'osu-core-singleton';
 import { uuid } from 'utils/seq';
 
-export const maxLength = 1024;
-
 export default class Message {
   @observable channelId = -1;
   @observable content = '';