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