lemmy/ui/src/components/community.tsx

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import { Component } from 'inferno';
import { Subscription } from "rxjs";
import { retryWhen, delay, take } from 'rxjs/operators';
import { UserOperation, Community as CommunityI, GetCommunityResponse, CommunityResponse, CommunityUser} from '../interfaces';
import { WebSocketService } from '../services';
import { PostListings } from './post-listings';
import { Sidebar } from './sidebar';
import { msgOp } from '../utils';
interface State {
community: CommunityI;
communityId: number;
moderators: Array<CommunityUser>;
}
export class Community extends Component<any, State> {
private subscription: Subscription;
private emptyState: State = {
community: {
id: null,
name: null,
title: null,
category_id: null,
category_name: null,
creator_id: null,
creator_name: null,
number_of_subscribers: null,
number_of_posts: null,
number_of_comments: null,
published: null
},
moderators: [],
communityId: Number(this.props.match.params.id)
}
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
this.subscription = WebSocketService.Instance.subject
.pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
.subscribe(
(msg) => this.parseMessage(msg),
(err) => console.error(err),
() => console.log('complete')
);
WebSocketService.Instance.getCommunity(this.state.communityId);
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
render() {
return (
<div class="container">
<div class="row">
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<div class="col-12 col-lg-9">
<h4>/f/{this.state.community.name}</h4>
<PostListings communityId={this.state.communityId} />
</div>
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<div class="col-12 col-lg-3">
<Sidebar community={this.state.community} moderators={this.state.moderators} />
</div>
</div>
</div>
)
}
parseMessage(msg: any) {
console.log(msg);
let op: UserOperation = msgOp(msg);
if (msg.error) {
alert(msg.error);
return;
} else if (op == UserOperation.GetCommunity) {
let res: GetCommunityResponse = msg;
this.state.community = res.community;
this.state.moderators = res.moderators;
this.setState(this.state);
} else if (op == UserOperation.EditCommunity) {
let res: CommunityResponse = msg;
this.state.community = res.community;
this.setState(this.state);
} else if (op == UserOperation.FollowCommunity) {
let res: CommunityResponse = msg;
this.state.community.subscribed = res.community.subscribed;
this.state.community.number_of_subscribers = res.community.number_of_subscribers;
this.setState(this.state);
}
}
}