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 class="text-right">{i18n.t("subscribers")}</th>
 128                     <th class="text-right">
 129                       {i18n.t("users")} / {i18n.t("month")}
 130                     </th>
 131                     <th class="text-right d-none d-lg-table-cell">
 132                       {i18n.t("posts")}
 133                     </th>
 134                     <th class="text-right d-none d-lg-table-cell">
 135                       {i18n.t("comments")}
 136                     </th>
 137                     <th></th>
 138                   </tr>
 139                 </thead>
 140                 <tbody>
 141                   {this.state.communities.map(cv => (
 142                     <tr>
 143                       <td>
 144                         <CommunityLink community={cv.community} />
 145                       </td>
 146                       <td class="text-right">{cv.counts.subscribers}</td>
 147                       <td class="text-right">{cv.counts.users_active_month}</td>
 148                       <td class="text-right d-none d-lg-table-cell">
 149                         {cv.counts.posts}
 150                       </td>
 151                       <td class="text-right d-none d-lg-table-cell">
 152                         {cv.counts.comments}
 153                       </td>
 154                       <td class="text-right">
 155                         {cv.subscribed ? (
 156                           <span
 157                             class="pointer btn-link"
 158                             role="button"
 159                             onClick={linkEvent(
 160                               cv.community.id,
 161                               this.handleUnsubscribe
 162                             )}
 163                           >
 164                             {i18n.t("unsubscribe")}
 165                           </span>
 166                         ) : (
 167                           <span
 168                             class="pointer btn-link"
 169                             role="button"
 170                             onClick={linkEvent(
 171                               cv.community.id,
 172                               this.handleSubscribe
 173                             )}
 174                           >
 175                             {i18n.t("subscribe")}
 176                           </span>
 177                         )}
 178                       </td>
 179                     </tr>
 180                   ))}
 181                 </tbody>
 182               </table>
 183             </div>
 184             {this.paginator()}
 185           </div>
 186         )}
 187       </div>
 188     );
 189   }
 190
 191   searchForm() {
 192     return (
 193       <form
 194         class="form-inline"
 195         onSubmit={linkEvent(this, this.handleSearchSubmit)}
 196       >
 197         <input
 198           type="text"
 199           id="communities-search"
 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         <label class="sr-only" htmlFor="communities-search">
 208           {i18n.t("search")}
 209         </label>
 210         <button type="submit" class="btn btn-secondary mr-2 mb-2">
 211           <span>{i18n.t("search")}</span>
 212         </button>
 213       </form>
 214     );
 215   }
 216
 217   paginator() {
 218     return (
 219       <div class="mt-2">
 220         {this.state.page > 1 && (
 221           <button
 222             class="btn btn-secondary mr-1"
 223             onClick={linkEvent(this, this.prevPage)}
 224           >
 225             {i18n.t("prev")}
 226           </button>
 227         )}
 228
 229         {this.state.communities.length > 0 && (
 230           <button
 231             class="btn btn-secondary"
 232             onClick={linkEvent(this, this.nextPage)}
 233           >
 234             {i18n.t("next")}
 235           </button>
 236         )}
 237       </div>
 238     );
 239   }
 240
 241   updateUrl(paramUpdates: CommunitiesProps) {
 242     const page = paramUpdates.page || this.state.page;
 243     this.props.history.push(`/communities/page/${page}`);
 244   }
 245
 246   nextPage(i: Communities) {
 247     i.updateUrl({ page: i.state.page + 1 });
 248   }
 249
 250   prevPage(i: Communities) {
 251     i.updateUrl({ page: i.state.page - 1 });
 252   }
 253
 254   handleUnsubscribe(communityId: number) {
 255     let form: FollowCommunity = {
 256       community_id: communityId,
 257       follow: false,
 258       auth: authField(),
 259     };
 260     WebSocketService.Instance.send(wsClient.followCommunity(form));
 261   }
 262
 263   handleSubscribe(communityId: number) {
 264     let form: FollowCommunity = {
 265       community_id: communityId,
 266       follow: true,
 267       auth: authField(),
 268     };
 269     WebSocketService.Instance.send(wsClient.followCommunity(form));
 270   }
 271
 272   handleSearchChange(i: Communities, event: any) {
 273     i.setState({ searchText: event.target.value });
 274   }
 275
 276   handleSearchSubmit(i: Communities) {
 277     const searchParamEncoded = encodeURIComponent(i.state.searchText);
 278     i.context.router.history.push(
 279       `/search/q/${searchParamEncoded}/type/Communities/sort/TopAll/page/1`
 280     );
 281   }
 282
 283   refetch() {
 284     let listCommunitiesForm: ListCommunities = {
 285       type_: ListingType.All,
 286       sort: SortType.TopAll,
 287       limit: communityLimit,
 288       page: this.state.page,
 289       auth: authField(false),
 290     };
 291
 292     WebSocketService.Instance.send(
 293       wsClient.listCommunities(listCommunitiesForm)
 294     );
 295   }
 296
 297   static fetchInitialData(req: InitialFetchRequest): Promise<any>[] {
 298     let pathSplit = req.path.split("/");
 299     let page = pathSplit[3] ? Number(pathSplit[3]) : 1;
 300     let listCommunitiesForm: ListCommunities = {
 301       type_: ListingType.All,
 302       sort: SortType.TopAll,
 303       limit: communityLimit,
 304       page,
 305     };
 306     setOptionalAuth(listCommunitiesForm, req.auth);
 307
 308     return [req.client.listCommunities(listCommunitiesForm)];
 309   }
 310
 311   parseMessage(msg: any) {
 312     let op = wsUserOp(msg);
 313     if (msg.error) {
 314       toast(i18n.t(msg.error), "danger");
 315       return;
 316     } else if (op == UserOperation.ListCommunities) {
 317       let data = wsJsonToRes<ListCommunitiesResponse>(msg).data;
 318       this.state.communities = data.communities;
 319       this.state.communities.sort(
 320         (a, b) => b.counts.subscribers - a.counts.subscribers
 321       );
 322       this.state.loading = false;
 323       window.scrollTo(0, 0);
 324       this.setState(this.state);
 325     } else if (op == UserOperation.FollowCommunity) {
 326       let data = wsJsonToRes<CommunityResponse>(msg).data;
 327       let found = this.state.communities.find(
 328         c => c.community.id == data.community_view.community.id
 329       );
 330       found.subscribed = data.community_view.subscribed;
 331       found.counts.subscribers = data.community_view.counts.subscribers;
 332       this.setState(this.state);
 333     }
 334   }
 335 }