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.loading = false;
  69     } else {
  70       this.refetch();
  71     }
  72   }
  73
  74   componentWillUnmount() {
  75     if (isBrowser()) {
  76       this.subscription.unsubscribe();
  77     }
  78   }
  79
  80   static getDerivedStateFromProps(props: any): CommunitiesProps {
  81     return {
  82       page: getPageFromProps(props),
  83     };
  84   }
  85
  86   componentDidUpdate(_: any, lastState: CommunitiesState) {
  87     if (lastState.page !== this.state.page) {
  88       this.setState({ loading: true });
  89       this.refetch();
  90     }
  91   }
  92
  93   get documentTitle(): string {
  94     return `${i18n.t("communities")} - ${this.state.site_view.site.name}`;
  95   }
  96
  97   render() {
  98     return (
  99       <div class="container">
 100         <HtmlTags
 101           title={this.documentTitle}
 102           path={this.context.router.route.match.url}
 103         />
 104         {this.state.loading ? (
 105           <h5>
 106             <Spinner />
 107           </h5>
 108         ) : (
 109           <div>
 110             <div class="row">
 111               <div class="col-md-6">
 112                 <h4>{i18n.t("list_of_communities")}</h4>
 113               </div>
 114               <div class="col-md-6">
 115                 <div class="float-md-right">{this.searchForm()}</div>
 116               </div>
 117             </div>
 118
 119             <div class="table-responsive">
 120               <table id="community_table" class="table table-sm table-hover">
 121                 <thead class="pointer">
 122                   <tr>
 123                     <th>{i18n.t("name")}</th>
 124                     <th class="text-right">{i18n.t("subscribers")}</th>
 125                     <th class="text-right">
 126                       {i18n.t("users")} / {i18n.t("month")}
 127                     </th>
 128                     <th class="text-right d-none d-lg-table-cell">
 129                       {i18n.t("posts")}
 130                     </th>
 131                     <th class="text-right d-none d-lg-table-cell">
 132                       {i18n.t("comments")}
 133                     </th>
 134                     <th></th>
 135                   </tr>
 136                 </thead>
 137                 <tbody>
 138                   {this.state.communities.map(cv => (
 139                     <tr>
 140                       <td>
 141                         <CommunityLink community={cv.community} />
 142                       </td>
 143                       <td class="text-right">{cv.counts.subscribers}</td>
 144                       <td class="text-right">{cv.counts.users_active_month}</td>
 145                       <td class="text-right d-none d-lg-table-cell">
 146                         {cv.counts.posts}
 147                       </td>
 148                       <td class="text-right d-none d-lg-table-cell">
 149                         {cv.counts.comments}
 150                       </td>
 151                       <td class="text-right">
 152                         {cv.subscribed ? (
 153                           <span
 154                             class="pointer btn-link"
 155                             role="button"
 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                             role="button"
 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           id="communities-search"
 197           class="form-control mr-2 mb-2"
 198           value={this.state.searchText}
 199           placeholder={`${i18n.t("search")}...`}
 200           onInput={linkEvent(this, this.handleSearchChange)}
 201           required
 202           minLength={3}
 203         />
 204         <label class="sr-only" htmlFor="communities-search">
 205           {i18n.t("search")}
 206         </label>
 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.TopMonth,
 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.TopMonth,
 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     console.log(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.loading = false;
 318       window.scrollTo(0, 0);
 319       this.setState(this.state);
 320     } else if (op == UserOperation.FollowCommunity) {
 321       let data = wsJsonToRes<CommunityResponse>(msg).data;
 322       let found = this.state.communities.find(
 323         c => c.community.id == data.community_view.community.id
 324       );
 325       found.subscribed = data.community_view.subscribed;
 326       found.counts.subscribers = data.community_view.counts.subscribers;
 327       this.setState(this.state);
 328     }
 329   }
 330 }