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import { Component, linkEvent } from 'inferno';
import { Helmet } from 'inferno-helmet';
import { Subscription } from 'rxjs';
import { retryWhen, delay, take } from 'rxjs/operators';
import {
UserOperation,
Community,
ListCommunitiesResponse,
CommunityResponse,
FollowCommunityForm,
ListCommunitiesForm,
SortType,
WebSocketJsonResponse,
GetSiteResponse,
Site,
} from '../interfaces';
import { WebSocketService } from '../services';
import { wsJsonToRes, toast, getPageFromProps } from '../utils';
import { CommunityLink } from './community-link';
import { i18n } from '../i18next';
declare const Sortable: any;
const communityLimit = 100;
interface CommunitiesState {
communities: Array<Community>;
page: number;
loading: boolean;
site: Site;
}
interface CommunitiesProps {
page: number;
}
export class Communities extends Component<any, CommunitiesState> {
private subscription: Subscription;
private emptyState: CommunitiesState = {
communities: [],
loading: true,
page: getPageFromProps(this.props),
site: undefined,
};
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();
WebSocketService.Instance.getSite();
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
static getDerivedStateFromProps(props: any): CommunitiesProps {
return {
page: getPageFromProps(props),
};
}
componentDidUpdate(_: any, lastState: CommunitiesState) {
if (lastState.page !== this.state.page) {
this.setState({ loading: true });
this.refetch();
}
}
get documentTitle(): string {
if (this.state.site) {
return `${i18n.t('communities')} - ${this.state.site.name}`;
} else {
return 'Lemmy';
}
}
render() {
return (
<div class="container">
<Helmet title={this.documentTitle} />
{this.state.loading ? (
<h5 class="">
<svg class="icon icon-spinner spin">
<use xlinkHref="#icon-spinner"></use>
</svg>
</h5>
) : (
<div>
<h5>{i18n.t('list_of_communities')}</h5>
<div class="table-responsive">
<table id="community_table" class="table table-sm table-hover">
<thead class="pointer">
<tr>
<th>{i18n.t('name')}</th>
<th class="d-none d-lg-table-cell">{i18n.t('title')}</th>
<th>{i18n.t('category')}</th>
<th class="text-right">{i18n.t('subscribers')}</th>
<th class="text-right d-none d-lg-table-cell">
{i18n.t('posts')}
</th>
<th class="text-right d-none d-lg-table-cell">
{i18n.t('comments')}
</th>
<th></th>
</tr>
</thead>
<tbody>
{this.state.communities.map(community => (
<tr>
<td>
<CommunityLink community={community} />
</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
)}
>
{i18n.t('unsubscribe')}
</span>
) : (
<span
class="pointer btn-link"
onClick={linkEvent(
community.id,
this.handleSubscribe
)}
>
{i18n.t('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-secondary mr-1"
onClick={linkEvent(this, this.prevPage)}
>
{i18n.t('prev')}
</button>
)}
{this.state.communities.length > 0 && (
<button
class="btn btn-secondary"
onClick={linkEvent(this, this.nextPage)}
>
{i18n.t('next')}
</button>
)}
</div>
);
}
updateUrl(paramUpdates: CommunitiesProps) {
const page = paramUpdates.page || this.state.page;
this.props.history.push(`/communities/page/${page}`);
}
nextPage(i: Communities) {
i.updateUrl({ page: i.state.page + 1 });
}
prevPage(i: Communities) {
i.updateUrl({ page: i.state.page - 1 });
}
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: communityLimit,
page: this.state.page,
};
WebSocketService.Instance.listCommunities(listCommunitiesForm);
}
parseMessage(msg: WebSocketJsonResponse) {
console.log(msg);
let res = wsJsonToRes(msg);
if (msg.error) {
toast(i18n.t(msg.error), 'danger');
return;
} else if (res.op == UserOperation.ListCommunities) {
let data = res.data as ListCommunitiesResponse;
this.state.communities = data.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 (res.op == UserOperation.FollowCommunity) {
let data = res.data as CommunityResponse;
let found = this.state.communities.find(c => c.id == data.community.id);
found.subscribed = data.community.subscribed;
found.number_of_subscribers = data.community.number_of_subscribers;
this.setState(this.state);
} else if (res.op == UserOperation.GetSite) {
let data = res.data as GetSiteResponse;
this.state.site = data.site;
this.setState(this.state);
}
}
}