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">
 131                       {i18n.t('users')} / {i18n.t('month')}
 132                     </th>
 133                     <th class="text-right d-none d-lg-table-cell">
 134                       {i18n.t('posts')}
 135                     </th>
 136                     <th class="text-right d-none d-lg-table-cell">
 137                       {i18n.t('comments')}
 138                     </th>
 139                     <th></th>
 140                   </tr>
 141                 </thead>
 142                 <tbody>
 143                   {this.state.communities.map(cv => (
 144                     <tr>
 145                       <td>
 146                         <CommunityLink community={cv.community} />
 147                       </td>
 148                       <td>{cv.category.name}</td>
 149                       <td class="text-right">{cv.counts.subscribers}</td>
 150                       <td class="text-right">{cv.counts.users_active_month}</td>
 151                       <td class="text-right d-none d-lg-table-cell">
 152                         {cv.counts.posts}
 153                       </td>
 154                       <td class="text-right d-none d-lg-table-cell">
 155                         {cv.counts.comments}
 156                       </td>
 157                       <td class="text-right">
 158                         {cv.subscribed ? (
 159                           <span
 160                             class="pointer btn-link"
 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                             onClick={linkEvent(
 172                               cv.community.id,
 173                               this.handleSubscribe
 174                             )}
 175                           >
 176                             {i18n.t('subscribe')}
 177                           </span>
 178                         )}
 179                       </td>
 180                     </tr>
 181                   ))}
 182                 </tbody>
 183               </table>
 184             </div>
 185             {this.paginator()}
 186           </div>
 187         )}
 188       </div>
 189     );
 190   }
 191
 192   searchForm() {
 193     return (
 194       <form
 195         class="form-inline"
 196         onSubmit={linkEvent(this, this.handleSearchSubmit)}
 197       >
 198         <input
 199           type="text"
 200           class="form-control mr-2 mb-2"
 201           value={this.state.searchText}
 202           placeholder={`${i18n.t('search')}...`}
 203           onInput={linkEvent(this, this.handleSearchChange)}
 204           required
 205           minLength={3}
 206         />
 207         <button type="submit" class="btn btn-secondary mr-2 mb-2">
 208           <span>{i18n.t('search')}</span>
 209         </button>
 210       </form>
 211     );
 212   }
 213
 214   paginator() {
 215     return (
 216       <div class="mt-2">
 217         {this.state.page > 1 && (
 218           <button
 219             class="btn btn-secondary mr-1"
 220             onClick={linkEvent(this, this.prevPage)}
 221           >
 222             {i18n.t('prev')}
 223           </button>
 224         )}
 225
 226         {this.state.communities.length > 0 && (
 227           <button
 228             class="btn btn-secondary"
 229             onClick={linkEvent(this, this.nextPage)}
 230           >
 231             {i18n.t('next')}
 232           </button>
 233         )}
 234       </div>
 235     );
 236   }
 237
 238   updateUrl(paramUpdates: CommunitiesProps) {
 239     const page = paramUpdates.page || this.state.page;
 240     this.props.history.push(`/communities/page/${page}`);
 241   }
 242
 243   nextPage(i: Communities) {
 244     i.updateUrl({ page: i.state.page + 1 });
 245   }
 246
 247   prevPage(i: Communities) {
 248     i.updateUrl({ page: i.state.page - 1 });
 249   }
 250
 251   handleUnsubscribe(communityId: number) {
 252     let form: FollowCommunity = {
 253       community_id: communityId,
 254       follow: false,
 255       auth: authField(),
 256     };
 257     WebSocketService.Instance.send(wsClient.followCommunity(form));
 258   }
 259
 260   handleSubscribe(communityId: number) {
 261     let form: FollowCommunity = {
 262       community_id: communityId,
 263       follow: true,
 264       auth: authField(),
 265     };
 266     WebSocketService.Instance.send(wsClient.followCommunity(form));
 267   }
 268
 269   handleSearchChange(i: Communities, event: any) {
 270     i.setState({ searchText: event.target.value });
 271   }
 272
 273   handleSearchSubmit(i: Communities) {
 274     const searchParamEncoded = encodeURIComponent(i.state.searchText);
 275     i.context.router.history.push(
 276       `/search/q/${searchParamEncoded}/type/Communities/sort/TopAll/page/1`
 277     );
 278   }
 279
 280   refetch() {
 281     let listCommunitiesForm: ListCommunities = {
 282       type_: ListingType.All,
 283       sort: SortType.TopAll,
 284       limit: communityLimit,
 285       page: this.state.page,
 286       auth: authField(false),
 287     };
 288
 289     WebSocketService.Instance.send(
 290       wsClient.listCommunities(listCommunitiesForm)
 291     );
 292   }
 293
 294   static fetchInitialData(req: InitialFetchRequest): Promise<any>[] {
 295     let pathSplit = req.path.split('/');
 296     let page = pathSplit[3] ? Number(pathSplit[3]) : 1;
 297     let listCommunitiesForm: ListCommunities = {
 298       type_: ListingType.All,
 299       sort: SortType.TopAll,
 300       limit: communityLimit,
 301       page,
 302     };
 303     setOptionalAuth(listCommunitiesForm, req.auth);
 304
 305     return [req.client.listCommunities(listCommunitiesForm)];
 306   }
 307
 308   parseMessage(msg: any) {
 309     let op = wsUserOp(msg);
 310     if (msg.error) {
 311       toast(i18n.t(msg.error), 'danger');
 312       return;
 313     } else if (op == UserOperation.ListCommunities) {
 314       let data = wsJsonToRes<ListCommunitiesResponse>(msg).data;
 315       this.state.communities = data.communities;
 316       this.state.communities.sort(
 317         (a, b) => b.counts.subscribers - a.counts.subscribers
 318       );
 319       this.state.loading = false;
 320       window.scrollTo(0, 0);
 321       this.setState(this.state);
 322     } else if (op == UserOperation.FollowCommunity) {
 323       let data = wsJsonToRes<CommunityResponse>(msg).data;
 324       let found = this.state.communities.find(
 325         c => c.community.id == data.community_view.community.id
 326       );
 327       found.subscribed = data.community_view.subscribed;
 328       found.counts.subscribers = data.community_view.counts.subscribers;
 329       this.setState(this.state);
 330     }
 331   }
 332 }