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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, SortType } from '../interfaces';
import { msgOp } from '../utils';
import { version } from '../version';
interface NavbarState {
isLoggedIn: boolean;
expanded: boolean;
expandUserDropdown: boolean;
unreadCount: number;
}
export class Navbar extends Component<any, NavbarState> {
private wsSub: Subscription;
private userSub: Subscription;
emptyState: NavbarState = {
isLoggedIn: (UserService.Instance.user !== undefined),
unreadCount: 0,
expanded: false,
expandUserDropdown: false
}
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
this.handleOverviewClick = this.handleOverviewClick.bind(this);
this.keepFetchingReplies();
// Subscribe to user changes
this.userSub = UserService.Instance.sub.subscribe(user => {
this.state.isLoggedIn = user.user !== undefined;
this.state.unreadCount = user.unreadCount;
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')
);
}
render() {
return (
<div>{this.navbar()}</div>
)
}
componentWillUnmount() {
this.wsSub.unsubscribe();
this.userSub.unsubscribe();
}
// TODO class active corresponding to current page
// TODO toggle css collapse
navbar() {
return (
<nav class="container navbar navbar-expand-md navbar-light navbar-bg p-0 px-3">
<Link title={version} class="navbar-brand" to="/">
<svg class="icon mr-2"><use xlinkHref="#icon-mouse"></use></svg>
Lemmy
</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">Forums</Link>
</li>
<li class="nav-item">
<Link class="nav-link" to="/search">Search</Link>
</li>
<li class="nav-item">
<Link class="nav-link" to="/create_post">Create Post</Link>
</li>
<li class="nav-item">
<Link class="nav-link" to="/create_community">Create Forum</Link>
</li>
</ul>
<ul class="navbar-nav ml-auto mr-2">
{this.state.isLoggedIn ?
<>
{
<li className="nav-item">
<Link class="inbox 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 dropdown ${this.state.expandUserDropdown && 'show'}`}>
<a class="pointer nav-link dropdown-toggle" onClick={linkEvent(this, this.expandUserDropdown)} role="button">
{UserService.Instance.user.username}
</a>
<div className={`dropdown-menu dropdown-menu-right ${this.state.expandUserDropdown && 'show'}`}>
<a role="button" class="dropdown-item pointer" onClick={linkEvent(this, this.handleOverviewClick)}>Overview</a>
<a role="button" class="dropdown-item pointer" onClick={ linkEvent(this, this.handleLogoutClick) }>Logout</a>
</div>
</li>
</>
:
<Link class="nav-link" to="/login">Login / Sign up</Link>
}
</ul>
</div>
</nav>
);
}
expandUserDropdown(i: Navbar) {
i.state.expandUserDropdown = !i.state.expandUserDropdown;
i.setState(i.state);
}
handleLogoutClick(i: Navbar) {
i.state.expandUserDropdown = false;
UserService.Instance.logout();
i.context.router.history.push('/');
}
handleOverviewClick(i: Navbar) {
i.state.expandUserDropdown = false;
i.setState(i.state);
let userPage = `/u/${UserService.Instance.user.username}`;
i.context.router.history.push(userPage);
}
expandNavbar(i: Navbar) {
i.state.expanded = !i.state.expanded;
i.setState(i.state);
}
parseMessage(msg: any) {
let op: UserOperation = msgOp(msg);
if (msg.error) {
return;
} else if (op == UserOperation.GetReplies) {
let res: GetRepliesResponse = msg;
this.sendRepliesCount(res);
}
}
keepFetchingReplies() {
this.fetchReplies();
setInterval(() => this.fetchReplies(), 30000);
}
fetchReplies() {
if (this.state.isLoggedIn) {
let repliesForm: GetRepliesForm = {
sort: SortType[SortType.New],
unread_only: true,
page: 1,
limit: 9999,
};
WebSocketService.Instance.getReplies(repliesForm);
}
}
sendRepliesCount(res: GetRepliesResponse) {
UserService.Instance.sub.next({user: UserService.Instance.user, unreadCount: res.replies.filter(r => !r.read).length});
}
}
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