Add edit history to web UI (#17390)

* Add edit history to web UI

* Change history reducer to store items per status

* Fix missing loading prop

app/javascript/mastodon/features/ui/components/compare_history_modal.js

@@ -0,0 +1,79 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { connect } from 'react-redux';
+import { FormattedMessage } from 'react-intl';
+import { closeModal } from 'mastodon/actions/modal';
+import emojify from 'mastodon/features/emoji/emoji';
+import escapeTextContentForBrowser from 'escape-html';
+import InlineAccount from 'mastodon/components/inline_account';
+import IconButton from 'mastodon/components/icon_button';
+import RelativeTimestamp from 'mastodon/components/relative_timestamp';
+
+const mapStateToProps = (state, { statusId }) => ({
+  versions: state.getIn(['history', statusId, 'items']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onClose() {
+    dispatch(closeModal());
+  },
+
+});
+
+export default @connect(mapStateToProps, mapDispatchToProps)
+class CompareHistoryModal extends React.PureComponent {
+
+  static propTypes = {
+    onClose: PropTypes.func.isRequired,
+    index: PropTypes.number.isRequired,
+    statusId: PropTypes.string.isRequired,
+    versions: ImmutablePropTypes.list.isRequired,
+  };
+
+  render () {
+    const { index, versions, onClose } = this.props;
+    const currentVersion = versions.get(index);
+
+    const emojiMap = currentVersion.get('emojis').reduce((obj, emoji) => {
+      obj[`:${emoji.get('shortcode')}:`] = emoji.toJS();
+      return obj;
+    }, {});
+
+    const content = { __html: emojify(currentVersion.get('content'), emojiMap) };
+    const spoilerContent = { __html: emojify(escapeTextContentForBrowser(currentVersion.get('spoiler_text')), emojiMap) };
+
+    const formattedDate = <RelativeTimestamp timestamp={currentVersion.get('created_at')} short={false} />;
+    const formattedName = <InlineAccount accountId={currentVersion.get('account')} />;
+
+    const label = currentVersion.get('original') ? (
+      <FormattedMessage id='status.history.created' defaultMessage='{name} created {date}' values={{ name: formattedName, date: formattedDate }} />
+    ) : (
+      <FormattedMessage id='status.history.edited' defaultMessage='{name} edited {date}' values={{ name: formattedName, date: formattedDate }} />
+    );
+
+    return (
+      <div className='modal-root__modal compare-history-modal'>
+        <div className='report-modal__target'>
+          <IconButton className='report-modal__close' icon='times' onClick={onClose} size={20} />
+          {label}
+        </div>
+
+        <div className='compare-history-modal__container'>
+          <div className='status__content'>
+            {currentVersion.get('spoiler_text').length > 0 && (
+              <React.Fragment>
+                <div className='translate' dangerouslySetInnerHTML={spoilerContent} />
+                <hr />
+              </React.Fragment>
+            )}
+
+            <div className='status__content__text status__content__text--visible translate' dangerouslySetInnerHTML={content} />
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}

app/javascript/mastodon/features/ui/components/modal_root.js

@@ -19,7 +19,8 @@ import {
   EmbedModal,
   ListEditor,
   ListAdder,
-} from '../../../features/ui/util/async-components';
+  CompareHistoryModal,
+} from 'mastodon/features/ui/util/async-components';
 
 const MODAL_COMPONENTS = {
   'MEDIA': () => Promise.resolve({ default: MediaModal }),
@@ -34,7 +35,8 @@ const MODAL_COMPONENTS = {
   'EMBED': EmbedModal,
   'LIST_EDITOR': ListEditor,
   'FOCAL_POINT': () => Promise.resolve({ default: FocalPointModal }),
-  'LIST_ADDER':ListAdder,
+  'LIST_ADDER': ListAdder,
+  'COMPARE_HISTORY': CompareHistoryModal,
 };
 
 export default class ModalRoot extends React.PureComponent {

app/javascript/mastodon/features/ui/util/async-components.js

@@ -157,3 +157,7 @@ export function Directory () {
 export function FollowRecommendations () {
   return import(/* webpackChunkName: "features/follow_recommendations" */'../../follow_recommendations');
 }
+
+export function CompareHistoryModal () {
+  return import(/*webpackChunkName: "modals/compare_history_modal" */'../components/compare_history_modal');
+}