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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 { UserOperation, Community, ListCommunitiesResponse, CommunityResponse, FollowCommunityForm, ListCommunitiesForm, SortType } from '../interfaces';
import { WebSocketService } from '../services';
import { msgOp } from '../utils';
declare const Sortable: any;
interface CommunitiesState {
communities: Array<Community>;
page: number;
loading: boolean;
}
export class Communities extends Component<any, CommunitiesState> {
private subscription: Subscription;
private emptyState: CommunitiesState = {
communities: [],
loading: true,
page: this.getPageFromProps(this.props),
}
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')
);
this.refetch();
}
getPageFromProps(props: any): number {
return (props.match.params.page) ? Number(props.match.params.page) : 1;
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
componentDidMount() {
document.title = "Communities - Lemmy";
}
// Necessary for back button for some reason
componentWillReceiveProps(nextProps: any) {
if (nextProps.history.action == 'POP') {
this.state = this.emptyState;
this.state.page = this.getPageFromProps(nextProps);
this.refetch();
}
}
render() {
return (
<div class="container">
{this.state.loading ?
<h5 class=""><svg class="icon icon-spinner spin"><use xlinkHref="#icon-spinner"></use></svg></h5> :
<div>
<h5>List of communities</h5>
<div class="table-responsive">
<table id="community_table" class="table table-sm table-hover">
<thead class="pointer">
<tr>
<th>Name</th>
<th class="d-none d-lg-table-cell">Title</th>
<th>Category</th>
<th class="text-right">Subscribers</th>
<th class="text-right d-none d-lg-table-cell">Posts</th>
<th class="text-right d-none d-lg-table-cell">Comments</th>
<th></th>
</tr>
</thead>
<tbody>
{this.state.communities.map(community =>
<tr>
<td><Link to={`/c/${community.name}`}>{community.name}</Link></td>
<td class="d-none d-lg-table-cell">{community.title}</td>
<td>{community.category_name}</td>
<td class="text-right">{community.number_of_subscribers}</td>
<td class="text-right d-none d-lg-table-cell">{community.number_of_posts}</td>
<td class="text-right d-none d-lg-table-cell">{community.number_of_comments}</td>
<td class="text-right">
{community.subscribed ?
<span class="pointer btn-link" onClick={linkEvent(community.id, this.handleUnsubscribe)}>Unsubscribe</span> :
<span class="pointer btn-link" onClick={linkEvent(community.id, this.handleSubscribe)}>Subscribe</span>
}
</td>
</tr>
)}
</tbody>
</table>
</div>
{this.paginator()}
</div>
}
</div>
);
}
paginator() {
return (
<div class="mt-2">
{this.state.page > 1 &&
<button class="btn btn-sm btn-secondary mr-1" onClick={linkEvent(this, this.prevPage)}>Prev</button>
}
<button class="btn btn-sm btn-secondary" onClick={linkEvent(this, this.nextPage)}>Next</button>
</div>
);
}
updateUrl() {
this.props.history.push(`/communities/page/${this.state.page}`);
}
nextPage(i: Communities) {
i.state.page++;
i.setState(i.state);
i.updateUrl();
i.refetch();
}
prevPage(i: Communities) {
i.state.page--;
i.setState(i.state);
i.updateUrl();
i.refetch();
}
handleUnsubscribe(communityId: number) {
let form: FollowCommunityForm = {
community_id: communityId,
follow: false
};
WebSocketService.Instance.followCommunity(form);
}
handleSubscribe(communityId: number) {
let form: FollowCommunityForm = {
community_id: communityId,
follow: true
};
WebSocketService.Instance.followCommunity(form);
}
refetch() {
let listCommunitiesForm: ListCommunitiesForm = {
sort: SortType[SortType.TopAll],
limit: 100,
page: this.state.page,
}
WebSocketService.Instance.listCommunities(listCommunitiesForm);
}
parseMessage(msg: any) {
console.log(msg);
let op: UserOperation = msgOp(msg);
if (msg.error) {
alert(msg.error);
return;
} else if (op == UserOperation.ListCommunities) {
let res: ListCommunitiesResponse = msg;
this.state.communities = res.communities;
this.state.communities.sort((a, b) => b.number_of_subscribers - a.number_of_subscribers);
this.state.loading = false;
window.scrollTo(0,0);
this.setState(this.state);
let table = document.querySelector('#community_table');
Sortable.initTable(table);
} else if (op == UserOperation.FollowCommunity) {
let res: CommunityResponse = msg;
let found = this.state.communities.find(c => c.id == res.community.id);
found.subscribed = res.community.subscribed;
found.number_of_subscribers = res.community.number_of_subscribers;
this.setState(this.state);
}
}
}
|
