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