Get charLimit from the initial state

app/javascript/mastodon/features/compose/components/compose_form.js

@@ -18,6 +18,7 @@ import { isMobile } from '../../../is_mobile';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import { length } from 'stringz';
 import { countableText } from '../util/counter';
+import { charLimit } from "../../../initial_state"
 
 const messages = defineMessages({
   placeholder: { id: 'compose_form.placeholder', defaultMessage: 'What is on your mind?' },
@@ -146,7 +147,7 @@ export default class ComposeForm extends ImmutablePureComponent {
     const { intl, onPaste, showSearch, anyMedia } = this.props;
     const disabled = this.props.is_submitting;
     const text     = [this.props.spoiler_text, countableText(this.props.text)].join('');
-    const disabledButton = disabled || this.props.is_uploading || length(text) > 500 || (text.length !== 0 && text.trim().length === 0 && !anyMedia);
+    const disabledButton = disabled || this.props.is_uploading || length(text) > charLimit || (text.length !== 0 && text.trim().length === 0 && !anyMedia);
     let publishText = '';
 
     if (this.props.privacy === 'private' || this.props.privacy === 'direct') {
@@ -200,7 +201,7 @@ export default class ComposeForm extends ImmutablePureComponent {
             <SensitiveButtonContainer />
             <SpoilerButtonContainer />
           </div>
-          <div className='character-counter__wrapper'><CharacterCounter max={500} text={text} /></div>
+          <div className='character-counter__wrapper'><CharacterCounter max={charLimit} text={text} /></div>
         </div>
 
         <div className='compose-form__publish'>

app/javascript/mastodon/initial_state.js

@@ -11,5 +11,6 @@ export const boostModal = getMeta('boost_modal');
 export const deleteModal = getMeta('delete_modal');
 export const me = getMeta('me');
 export const searchEnabled = getMeta('search_enabled');
+export const charLimit = getMeta('char_limit') || 5000;
 
 export default initialState;