src/shared/components/communities.tsx

   1 import { Component, linkEvent } from 'inferno';
   2 import { HtmlTags } from './html-tags';
   3 import { Subscription } from 'rxjs';
   4 import {
   5   UserOperation,
   6   CommunityView,
   7   ListCommunitiesResponse,
   8   CommunityResponse,
   9   FollowCommunity,
  10   ListCommunities,
  11   SortType,
  12   ListingType,
  13   SiteView,
  14 } from 'lemmy-js-client';
  15 import { WebSocketService } from '../services';
  16 import {
  17   wsJsonToRes,
  18   toast,
  19   getPageFromProps,
  20   isBrowser,
  21   setIsoData,
  22   wsSubscribe,
  23   wsUserOp,
  24   wsClient,
  25   authField,
  26   setOptionalAuth,
  27 } from '../utils';
  28 import { CommunityLink } from './community-link';
  29 import { Spinner } from './icon';
  30 import { i18n } from '../i18next';
  31 import { InitialFetchRequest } from 'shared/interfaces';
  32
  33 const communityLimit = 100;
  34
  35 interface CommunitiesState {
  36   communities: CommunityView[];
  37   page: number;
  38   loading: boolean;
  39   site_view: SiteView;
  40   searchText: string;
  41 }
  42
  43 interface CommunitiesProps {
  44   page: number;
  45 }
  46
  47 export class Communities extends Component<any, CommunitiesState> {
  48   private subscription: Subscription;
  49   private isoData = setIsoData(this.context);
  50   private emptyState: CommunitiesState = {
  51     communities: [],
  52     loading: true,
  53     page: getPageFromProps(this.props),
  54     site_view: this.isoData.site_res.site_view,
  55     searchText: '',
  56   };
  57
  58   constructor(props: any, context: any) {
  59     super(props, context);
  60     this.state = this.emptyState;
  61
  62     this.parseMessage = this.parseMessage.bind(this);
  63     this.subscription = wsSubscribe(this.parseMessage);
  64
  65     // Only fetch the data if coming from another route
  66     if (this.isoData.path == this.context.router.route.match.url) {
  67       this.state.communities = this.isoData.routeData[0].communities;
  68       this.state.communities.sort(
  69         (a, b) => b.counts.subscribers - a.counts.subscribers
  70       );
  71       this.state.loading = false;
  72     } else {
  73       this.refetch();
  74     }
  75   }
  76
  77   componentWillUnmount() {
  78     if (isBrowser()) {
  79       this.subscription.unsubscribe();
  80     }
  81   }
  82
  83   static getDerivedStateFromProps(props: any): CommunitiesProps {
  84     return {
  85       page: getPageFromProps(props),
  86     };
  87   }
  88
  89   componentDidUpdate(_: any, lastState: CommunitiesState) {
  90     if (lastState.page !== this.state.page) {
  91       this.setState({ loading: true });
  92       this.refetch();
  93     }
  94   }
  95
  96   get documentTitle(): string {
  97     return `${i18n.t('communities')} - ${this.state.site_view.site.name}`;
  98   }
  99
 100   render() {
 101     return (
 102       <div class="container">
 103         <HtmlTags
 104           title={this.documentTitle}
 105           path={this.context.router.route.match.url}
 106         />
 107         {this.state.loading ? (
 108           <h5>
 109             <Spinner />
 110           </h5>
 111         ) : (
 112           <div>
 113             <div class="row">
 114               <div class="col-md-6">
 115                 <h4>{i18n.t('list_of_communities')}</h4>
 116               </div>
 117               <div class="col-md-6">
 118                 <div class="float-md-right">{this.searchForm()}</div>
 119               </div>
 120             </div>
 121
 122             <div class="table-responsive">
 123               <table id="community_table" class="table table-sm table-hover">
 124                 <thead class="pointer">
 125                   <tr>
 126                     <th>{i18n.t('name')}</th>
 127                     <th>{i18n.t('category')}</th>
 128                     <th class="text-right">{i18n.t('subscribers')}</th>
 129                     <th class="text-right">
 130                       {i18n.t('users')} / {i18n.t('month')}
 131                     </th>
 132                     <th class="text-right d-none d-lg-table-cell">
 133                       {i18n.t('posts')}
 134                     </th>
 135                     <th class="text-right d-none d-lg-table-cell">
 136                       {i18n.t('comments')}
 137                     </th>
 138                     <th></th>
 139                   </tr>
 140                 </thead>
 141                 <tbody>
 142                   {this.state.communities.map(cv => (
 143                     <tr>
 144                       <td>
 145                         <CommunityLink community={cv.community} />
 146                       </td>
 147                       <td>{cv.category.name}</td>
 148                       <td class="text-right">{cv.counts.subscribers}</td>
 149                       <td class="text-right">{cv.counts.users_active_month}</td>
 150                       <td class="text-right d-none d-lg-table-cell">
 151                         {cv.counts.posts}
 152                       </td>
 153                       <td class="text-right d-none d-lg-table-cell">
 154                         {cv.counts.comments}
 155                       </td>
 156                       <td class="text-right">
 157                         {cv.subscribed ? (
 158                           <span
 159                             class="pointer btn-link"
 160                             role="button"
 161                             onClick={linkEvent(
 162                               cv.community.id,
 163                               this.handleUnsubscribe
 164                             )}
 165                           >
 166                             {i18n.t('unsubscribe')}
 167                           </span>
 168                         ) : (
 169                           <span
 170                             class="pointer btn-link"
 171                             role="button"
 172                             onClick={linkEvent(
 173                               cv.community.id,
 174                               this.handleSubscribe
 175                             )}
 176                           >
 177                             {i18n.t('subscribe')}
 178                           </span>
 179                         )}
 180                       </td>
 181                     </tr>
 182                   ))}
 183                 </tbody>
 184               </table>
 185             </div>
 186             {this.paginator()}
 187           </div>
 188         )}
 189       </div>
 190     );
 191   }
 192
 193   searchForm() {
 194     return (
 195       <form
 196         class="form-inline"
 197         onSubmit={linkEvent(this, this.handleSearchSubmit)}
 198       >
 199         <input
 200           type="text"
 201           class="form-control mr-2 mb-2"
 202           value={this.state.searchText}
 203           placeholder={`${i18n.t('search')}...`}
 204           onInput={linkEvent(this, this.handleSearchChange)}
 205           required
 206           minLength={3}
 207         />
 208         <button type="submit" class="btn btn-secondary mr-2 mb-2">
 209           <span>{i18n.t('search')}</span>
 210         </button>
 211       </form>
 212     );
 213   }
 214
 215   paginator() {
 216     return (
 217       <div class="mt-2">
 218         {this.state.page > 1 && (
 219           <button
 220             class="btn btn-secondary mr-1"
 221             onClick={linkEvent(this, this.prevPage)}
 222           >
 223             {i18n.t('prev')}
 224           </button>
 225         )}
 226
 227         {this.state.communities.length > 0 && (
 228           <button
 229             class="btn btn-secondary"
 230             onClick={linkEvent(this, this.nextPage)}
 231           >
 232             {i18n.t('next')}
 233           </button>
 234         )}
 235       </div>
 236     );
 237   }
 238
 239   updateUrl(paramUpdates: CommunitiesProps) {
 240     const page = paramUpdates.page || this.state.page;
 241     this.props.history.push(`/communities/page/${page}`);
 242   }
 243
 244   nextPage(i: Communities) {
 245     i.updateUrl({ page: i.state.page + 1 });
 246   }
 247
 248   prevPage(i: Communities) {
 249     i.updateUrl({ page: i.state.page - 1 });
 250   }
 251
 252   handleUnsubscribe(communityId: number) {
 253     let form: FollowCommunity = {
 254       community_id: communityId,
 255       follow: false,
 256       auth: authField(),
 257     };
 258     WebSocketService.Instance.send(wsClient.followCommunity(form));
 259   }
 260
 261   handleSubscribe(communityId: number) {
 262     let form: FollowCommunity = {
 263       community_id: communityId,
 264       follow: true,
 265       auth: authField(),
 266     };
 267     WebSocketService.Instance.send(wsClient.followCommunity(form));
 268   }
 269
 270   handleSearchChange(i: Communities, event: any) {
 271     i.setState({ searchText: event.target.value });
 272   }
 273
 274   handleSearchSubmit(i: Communities) {
 275     const searchParamEncoded = encodeURIComponent(i.state.searchText);
 276     i.context.router.history.push(
 277       `/search/q/${searchParamEncoded}/type/Communities/sort/TopAll/page/1`
 278     );
 279   }
 280
 281   refetch() {
 282     let listCommunitiesForm: ListCommunities = {
 283       type_: ListingType.All,
 284       sort: SortType.TopAll,
 285       limit: communityLimit,
 286       page: this.state.page,
 287       auth: authField(false),
 288     };
 289
 290     WebSocketService.Instance.send(
 291       wsClient.listCommunities(listCommunitiesForm)
 292     );
 293   }
 294
 295   static fetchInitialData(req: InitialFetchRequest): Promise<any>[] {
 296     let pathSplit = req.path.split('/');
 297     let page = pathSplit[3] ? Number(pathSplit[3]) : 1;
 298     let listCommunitiesForm: ListCommunities = {
 299       type_: ListingType.All,
 300       sort: SortType.TopAll,
 301       limit: communityLimit,
 302       page,
 303     };
 304     setOptionalAuth(listCommunitiesForm, req.auth);
 305
 306     return [req.client.listCommunities(listCommunitiesForm)];
 307   }
 308
 309   parseMessage(msg: any) {
 310     let op = wsUserOp(msg);
 311     if (msg.error) {
 312       toast(i18n.t(msg.error), 'danger');
 313       return;
 314     } else if (op == UserOperation.ListCommunities) {
 315       let data = wsJsonToRes<ListCommunitiesResponse>(msg).data;
 316       this.state.communities = data.communities;
 317       this.state.communities.sort(
 318         (a, b) => b.counts.subscribers - a.counts.subscribers
 319       );
 320       this.state.loading = false;
 321       window.scrollTo(0, 0);
 322       this.setState(this.state);
 323     } else if (op == UserOperation.FollowCommunity) {
 324       let data = wsJsonToRes<CommunityResponse>(msg).data;
 325       let found = this.state.communities.find(
 326         c => c.community.id == data.community_view.community.id
 327       );
 328       found.subscribed = data.community_view.subscribed;
 329       found.counts.subscribers = data.community_view.counts.subscribers;
 330       this.setState(this.state);
 331     }
 332   }
 333 }