lemmy/ui/src/components/navbar.tsx

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import { Component, linkEvent } from 'inferno';
import { Link } from 'inferno-router';
import { Subscription } from 'rxjs';
import { retryWhen, delay, take } from 'rxjs/operators';
import { WebSocketService, UserService } from '../services';
import {
UserOperation,
GetRepliesForm,
GetRepliesResponse,
GetUserMentionsForm,
GetUserMentionsResponse,
GetPrivateMessagesForm,
PrivateMessagesResponse,
SortType,
GetSiteResponse,
Comment,
PrivateMessage,
WebSocketJsonResponse,
} from '../interfaces';
import {
wsJsonToRes,
pictshareAvatarThumbnail,
showAvatars,
fetchLimit,
isCommentType,
toast,
} from '../utils';
import { version } from '../version';
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import { i18n } from '../i18next';
import { T } from 'inferno-i18next';
interface NavbarState {
isLoggedIn: boolean;
expanded: boolean;
replies: Array<Comment>;
mentions: Array<Comment>;
messages: Array<PrivateMessage>;
fetchCount: number;
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unreadCount: number;
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siteName: string;
}
export class Navbar extends Component<any, NavbarState> {
private wsSub: Subscription;
private userSub: Subscription;
emptyState: NavbarState = {
isLoggedIn: UserService.Instance.user !== undefined,
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unreadCount: 0,
fetchCount: 0,
replies: [],
mentions: [],
messages: [],
expanded: false,
siteName: undefined,
};
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
this.keepFetchingUnreads();
// Subscribe to user changes
this.userSub = UserService.Instance.sub.subscribe(user => {
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this.state.isLoggedIn = user.user !== undefined;
this.state.unreadCount = user.unreadCount;
this.requestNotificationPermission();
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this.setState(this.state);
});
this.wsSub = WebSocketService.Instance.subject
.pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
.subscribe(
msg => this.parseMessage(msg),
err => console.error(err),
() => console.log('complete')
);
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if (this.state.isLoggedIn) {
this.requestNotificationPermission();
}
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WebSocketService.Instance.getSite();
}
render() {
return <div>{this.navbar()}</div>;
}
componentWillUnmount() {
this.wsSub.unsubscribe();
this.userSub.unsubscribe();
}
// TODO class active corresponding to current page
navbar() {
return (
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<nav class="container-fluid navbar navbar-expand-md navbar-light shadow p-0 px-3">
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<Link title={version} class="navbar-brand" to="/">
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{this.state.siteName}
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</Link>
<button
class="navbar-toggler"
type="button"
onClick={linkEvent(this, this.expandNavbar)}
>
<span class="navbar-toggler-icon"></span>
</button>
<div
className={`${!this.state.expanded && 'collapse'} navbar-collapse`}
>
<ul class="navbar-nav mr-auto">
<li class="nav-item">
<Link class="nav-link" to="/communities">
<T i18nKey="communities">#</T>
</Link>
</li>
<li class="nav-item">
<Link class="nav-link" to="/search">
<T i18nKey="search">#</T>
</Link>
</li>
<li class="nav-item">
<Link
class="nav-link"
to={{
pathname: '/create_post',
state: { prevPath: this.currentLocation },
}}
>
<T i18nKey="create_post">#</T>
</Link>
</li>
<li class="nav-item">
<Link class="nav-link" to="/create_community">
<T i18nKey="create_community">#</T>
</Link>
</li>
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<li className="nav-item">
<Link
class="nav-link ml-2"
to="/sponsors"
title={i18n.t('donate_to_lemmy')}
>
<svg class="icon">
<use xlinkHref="#icon-coffee"></use>
</svg>
</Link>
</li>
</ul>
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<ul class="navbar-nav ml-auto">
{this.state.isLoggedIn ? (
<>
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<li className="nav-item mt-1">
<Link class="nav-link" to="/inbox">
<svg class="icon">
<use xlinkHref="#icon-mail"></use>
</svg>
{this.state.unreadCount > 0 && (
<span class="ml-1 badge badge-light">
{this.state.unreadCount}
</span>
)}
</Link>
</li>
<li className="nav-item">
<Link
class="nav-link"
to={`/u/${UserService.Instance.user.username}`}
>
<span>
{UserService.Instance.user.avatar && showAvatars() && (
<img
src={pictshareAvatarThumbnail(
UserService.Instance.user.avatar
)}
height="32"
width="32"
class="rounded-circle mr-2"
/>
)}
{UserService.Instance.user.username}
</span>
</Link>
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</li>
</>
) : (
<Link class="nav-link" to="/login">
<T i18nKey="login_sign_up">#</T>
</Link>
)}
</ul>
</div>
</nav>
);
}
expandNavbar(i: Navbar) {
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i.state.expanded = !i.state.expanded;
i.setState(i.state);
}
parseMessage(msg: WebSocketJsonResponse) {
let res = wsJsonToRes(msg);
if (msg.error) {
if (msg.error == 'not_logged_in') {
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UserService.Instance.logout();
location.reload();
}
return;
} else if (res.op == UserOperation.GetReplies) {
let data = res.data as GetRepliesResponse;
let unreadReplies = data.replies.filter(r => !r.read);
if (
unreadReplies.length > 0 &&
this.state.fetchCount > 1 &&
JSON.stringify(this.state.replies) !== JSON.stringify(unreadReplies)
) {
this.notify(unreadReplies);
}
this.state.replies = unreadReplies;
this.setState(this.state);
this.sendUnreadCount();
} else if (res.op == UserOperation.GetUserMentions) {
let data = res.data as GetUserMentionsResponse;
let unreadMentions = data.mentions.filter(r => !r.read);
if (
unreadMentions.length > 0 &&
this.state.fetchCount > 1 &&
JSON.stringify(this.state.mentions) !== JSON.stringify(unreadMentions)
) {
this.notify(unreadMentions);
}
this.state.mentions = unreadMentions;
this.setState(this.state);
this.sendUnreadCount();
} else if (res.op == UserOperation.GetPrivateMessages) {
let data = res.data as PrivateMessagesResponse;
let unreadMessages = data.messages.filter(r => !r.read);
if (
unreadMessages.length > 0 &&
this.state.fetchCount > 1 &&
JSON.stringify(this.state.messages) !== JSON.stringify(unreadMessages)
) {
this.notify(unreadMessages);
}
this.state.messages = unreadMessages;
this.setState(this.state);
this.sendUnreadCount();
} else if (res.op == UserOperation.GetSite) {
let data = res.data as GetSiteResponse;
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if (data.site) {
this.state.siteName = data.site.name;
WebSocketService.Instance.site = data.site;
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this.setState(this.state);
}
}
}
keepFetchingUnreads() {
this.fetchUnreads();
setInterval(() => this.fetchUnreads(), 15000);
}
fetchUnreads() {
if (this.state.isLoggedIn) {
let repliesForm: GetRepliesForm = {
sort: SortType[SortType.New],
unread_only: true,
page: 1,
limit: fetchLimit,
};
let userMentionsForm: GetUserMentionsForm = {
sort: SortType[SortType.New],
unread_only: true,
page: 1,
limit: fetchLimit,
};
let privateMessagesForm: GetPrivateMessagesForm = {
unread_only: true,
page: 1,
limit: fetchLimit,
};
if (this.currentLocation !== '/inbox') {
WebSocketService.Instance.getReplies(repliesForm);
WebSocketService.Instance.getUserMentions(userMentionsForm);
WebSocketService.Instance.getPrivateMessages(privateMessagesForm);
this.state.fetchCount++;
}
}
}
get currentLocation() {
return this.context.router.history.location.pathname;
}
sendUnreadCount() {
UserService.Instance.sub.next({
user: UserService.Instance.user,
unreadCount: this.unreadCount,
});
}
get unreadCount() {
return (
this.state.replies.filter(r => !r.read).length +
this.state.mentions.filter(r => !r.read).length +
this.state.messages.filter(r => !r.read).length
);
}
requestNotificationPermission() {
if (UserService.Instance.user) {
document.addEventListener('DOMContentLoaded', function() {
if (!Notification) {
toast(i18n.t('notifications_error'), 'danger');
return;
}
if (Notification.permission !== 'granted')
Notification.requestPermission();
});
}
}
notify(replies: Array<Comment | PrivateMessage>) {
let recentReply = replies[0];
if (Notification.permission !== 'granted') Notification.requestPermission();
else {
var notification = new Notification(
`${replies.length} ${i18n.t('unread_messages')}`,
{
icon: recentReply.creator_avatar
? recentReply.creator_avatar
: `${window.location.protocol}//${window.location.host}/static/assets/apple-touch-icon.png`,
body: `${recentReply.creator_name}: ${recentReply.content}`,
}
);
notification.onclick = () => {
this.context.router.history.push(
isCommentType(recentReply)
? `/post/${recentReply.post_id}/comment/${recentReply.id}`
: `/inbox`
);
};
}
}
}