Add option to be notified when a followed user posts (#13546)

* Add bell button

Fix #4890

* Remove duplicate type from post-deployment migration

* Fix legacy class type mappings

* Improve query performance with better index

* Fix validation

* Remove redundant index from notifications

app/javascript/mastodon/features/account_timeline/components/header.js

@@ -55,6 +55,10 @@ export default class Header extends ImmutablePureComponent {
     this.props.onReblogToggle(this.props.account);
   }
 
+  handleNotifyToggle = () => {
+    this.props.onNotifyToggle(this.props.account);
+  }
+
   handleMute = () => {
     this.props.onMute(this.props.account);
   }
@@ -106,6 +110,7 @@ export default class Header extends ImmutablePureComponent {
           onMention={this.handleMention}
           onDirect={this.handleDirect}
           onReblogToggle={this.handleReblogToggle}
+          onNotifyToggle={this.handleNotifyToggle}
           onReport={this.handleReport}
           onMute={this.handleMute}
           onBlockDomain={this.handleBlockDomain}

app/javascript/mastodon/features/account_timeline/containers/header_container.js

@@ -76,9 +76,9 @@ const mapDispatchToProps = (dispatch, { intl }) => ({
 
   onReblogToggle (account) {
     if (account.getIn(['relationship', 'showing_reblogs'])) {
-      dispatch(followAccount(account.get('id'), false));
+      dispatch(followAccount(account.get('id'), { reblogs: false }));
     } else {
-      dispatch(followAccount(account.get('id'), true));
+      dispatch(followAccount(account.get('id'), { reblogs: true }));
     }
   },
 
@@ -90,6 +90,14 @@ const mapDispatchToProps = (dispatch, { intl }) => ({
     }
   },
 
+  onNotifyToggle (account) {
+    if (account.getIn(['relationship', 'notifying'])) {
+      dispatch(followAccount(account.get('id'), { notify: false }));
+    } else {
+      dispatch(followAccount(account.get('id'), { notify: true }));
+    }
+  },
+
   onReport (account) {
     dispatch(initReport(account));
   },