src/shared/components/community.tsx

   1 import { Component, linkEvent } from 'inferno';
   2 import { Helmet } from 'inferno-helmet';
   3 import { Subscription } from 'rxjs';
   4 import { retryWhen, delay, take } from 'rxjs/operators';
   5 import { DataType } from '../interfaces';
   6 import {
   7   UserOperation,
   8   Community as CommunityI,
   9   GetCommunityResponse,
  10   CommunityResponse,
  11   CommunityUser,
  12   UserView,
  13   SortType,
  14   Post,
  15   GetPostsForm,
  16   GetCommunityForm,
  17   ListingType,
  18   GetPostsResponse,
  19   PostResponse,
  20   AddModToCommunityResponse,
  21   BanFromCommunityResponse,
  22   Comment,
  23   GetCommentsForm,
  24   GetCommentsResponse,
  25   CommentResponse,
  26   WebSocketJsonResponse,
  27   GetSiteResponse,
  28   Site,
  29 } from 'lemmy-js-client';
  30 import { WebSocketService } from '../services';
  31 import { PostListings } from './post-listings';
  32 import { CommentNodes } from './comment-nodes';
  33 import { SortSelect } from './sort-select';
  34 import { DataTypeSelect } from './data-type-select';
  35 import { Sidebar } from './sidebar';
  36 import { CommunityLink } from './community-link';
  37 import { BannerIconHeader } from './banner-icon-header';
  38 import {
  39   wsJsonToRes,
  40   fetchLimit,
  41   toast,
  42   getPageFromProps,
  43   getSortTypeFromProps,
  44   getDataTypeFromProps,
  45   editCommentRes,
  46   saveCommentRes,
  47   createCommentLikeRes,
  48   createPostLikeFindRes,
  49   editPostFindRes,
  50   commentsToFlatNodes,
  51   setupTippy,
  52   favIconUrl,
  53   notifyPost,
  54 } from '../utils';
  55 import { i18n } from '../i18next';
  56
  57 interface State {
  58   community: CommunityI;
  59   communityId: number;
  60   communityName: string;
  61   moderators: CommunityUser[];
  62   admins: UserView[];
  63   online: number;
  64   loading: boolean;
  65   posts: Post[];
  66   comments: Comment[];
  67   dataType: DataType;
  68   sort: SortType;
  69   page: number;
  70   site: Site;
  71 }
  72
  73 interface CommunityProps {
  74   dataType: DataType;
  75   sort: SortType;
  76   page: number;
  77 }
  78
  79 interface UrlParams {
  80   dataType?: string;
  81   sort?: SortType;
  82   page?: number;
  83 }
  84
  85 export class Community extends Component<any, State> {
  86   private subscription: Subscription;
  87   private emptyState: State = {
  88     community: {
  89       id: null,
  90       name: null,
  91       title: null,
  92       category_id: null,
  93       category_name: null,
  94       creator_id: null,
  95       creator_name: null,
  96       number_of_subscribers: null,
  97       number_of_posts: null,
  98       number_of_comments: null,
  99       published: null,
 100       removed: null,
 101       nsfw: false,
 102       deleted: null,
 103       local: null,
 104       actor_id: null,
 105       last_refreshed_at: null,
 106       creator_actor_id: null,
 107       creator_local: null,
 108     },
 109     moderators: [],
 110     admins: [],
 111     communityId: Number(this.props.match.params.id),
 112     communityName: this.props.match.params.name,
 113     online: null,
 114     loading: true,
 115     posts: [],
 116     comments: [],
 117     dataType: getDataTypeFromProps(this.props),
 118     sort: getSortTypeFromProps(this.props),
 119     page: getPageFromProps(this.props),
 120     site: {
 121       id: undefined,
 122       name: undefined,
 123       creator_id: undefined,
 124       published: undefined,
 125       creator_name: undefined,
 126       number_of_users: undefined,
 127       number_of_posts: undefined,
 128       number_of_comments: undefined,
 129       number_of_communities: undefined,
 130       enable_downvotes: undefined,
 131       open_registration: undefined,
 132       enable_nsfw: undefined,
 133       icon: undefined,
 134       banner: undefined,
 135       creator_preferred_username: undefined,
 136     },
 137   };
 138
 139   constructor(props: any, context: any) {
 140     super(props, context);
 141
 142     this.state = this.emptyState;
 143     this.handleSortChange = this.handleSortChange.bind(this);
 144     this.handleDataTypeChange = this.handleDataTypeChange.bind(this);
 145
 146     this.subscription = WebSocketService.Instance.subject
 147       .pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
 148       .subscribe(
 149         msg => this.parseMessage(msg),
 150         err => console.error(err),
 151         () => console.log('complete')
 152       );
 153
 154     let form: GetCommunityForm = {
 155       id: this.state.communityId ? this.state.communityId : null,
 156       name: this.state.communityName ? this.state.communityName : null,
 157     };
 158     WebSocketService.Instance.getCommunity(form);
 159     WebSocketService.Instance.getSite();
 160   }
 161
 162   componentWillUnmount() {
 163     this.subscription.unsubscribe();
 164   }
 165
 166   static getDerivedStateFromProps(props: any): CommunityProps {
 167     return {
 168       dataType: getDataTypeFromProps(props),
 169       sort: getSortTypeFromProps(props),
 170       page: getPageFromProps(props),
 171     };
 172   }
 173
 174   componentDidUpdate(_: any, lastState: State) {
 175     if (
 176       lastState.dataType !== this.state.dataType ||
 177       lastState.sort !== this.state.sort ||
 178       lastState.page !== this.state.page
 179     ) {
 180       this.setState({ loading: true });
 181       this.fetchData();
 182     }
 183   }
 184
 185   get documentTitle(): string {
 186     if (this.state.community.title) {
 187       return `${this.state.community.title} - ${this.state.site.name}`;
 188     } else {
 189       return 'Lemmy';
 190     }
 191   }
 192
 193   get favIcon(): string {
 194     return this.state.site.icon ? this.state.site.icon : favIconUrl;
 195   }
 196
 197   render() {
 198     return (
 199       <div class="container">
 200         <Helmet title={this.documentTitle}>
 201           <link
 202             id="favicon"
 203             rel="icon"
 204             type="image/x-icon"
 205             href={this.favIcon}
 206           />
 207         </Helmet>
 208         {this.state.loading ? (
 209           <h5>
 210             <svg class="icon icon-spinner spin">
 211               <use xlinkHref="#icon-spinner"></use>
 212             </svg>
 213           </h5>
 214         ) : (
 215           <div class="row">
 216             <div class="col-12 col-md-8">
 217               {this.communityInfo()}
 218               {this.selects()}
 219               {this.listings()}
 220               {this.paginator()}
 221             </div>
 222             <div class="col-12 col-md-4">
 223               <Sidebar
 224                 community={this.state.community}
 225                 moderators={this.state.moderators}
 226                 admins={this.state.admins}
 227                 online={this.state.online}
 228                 enableNsfw={this.state.site.enable_nsfw}
 229               />
 230             </div>
 231           </div>
 232         )}
 233       </div>
 234     );
 235   }
 236
 237   listings() {
 238     return this.state.dataType == DataType.Post ? (
 239       <PostListings
 240         posts={this.state.posts}
 241         removeDuplicates
 242         sort={this.state.sort}
 243         enableDownvotes={this.state.site.enable_downvotes}
 244         enableNsfw={this.state.site.enable_nsfw}
 245       />
 246     ) : (
 247       <CommentNodes
 248         nodes={commentsToFlatNodes(this.state.comments)}
 249         noIndent
 250         sortType={this.state.sort}
 251         showContext
 252         enableDownvotes={this.state.site.enable_downvotes}
 253       />
 254     );
 255   }
 256
 257   communityInfo() {
 258     return (
 259       <div>
 260         <BannerIconHeader
 261           banner={this.state.community.banner}
 262           icon={this.state.community.icon}
 263         />
 264         <h5 class="mb-0">{this.state.community.title}</h5>
 265         <CommunityLink
 266           community={this.state.community}
 267           realLink
 268           useApubName
 269           muted
 270           hideAvatar
 271         />
 272         <hr />
 273       </div>
 274     );
 275   }
 276
 277   selects() {
 278     return (
 279       <div class="mb-3">
 280         <span class="mr-3">
 281           <DataTypeSelect
 282             type_={this.state.dataType}
 283             onChange={this.handleDataTypeChange}
 284           />
 285         </span>
 286         <span class="mr-2">
 287           <SortSelect sort={this.state.sort} onChange={this.handleSortChange} />
 288         </span>
 289         <a
 290           href={`/feeds/c/${this.state.communityName}.xml?sort=${this.state.sort}`}
 291           target="_blank"
 292           title="RSS"
 293           rel="noopener"
 294         >
 295           <svg class="icon text-muted small">
 296             <use xlinkHref="#icon-rss">#</use>
 297           </svg>
 298         </a>
 299       </div>
 300     );
 301   }
 302
 303   paginator() {
 304     return (
 305       <div class="my-2">
 306         {this.state.page > 1 && (
 307           <button
 308             class="btn btn-secondary mr-1"
 309             onClick={linkEvent(this, this.prevPage)}
 310           >
 311             {i18n.t('prev')}
 312           </button>
 313         )}
 314         {this.state.posts.length > 0 && (
 315           <button
 316             class="btn btn-secondary"
 317             onClick={linkEvent(this, this.nextPage)}
 318           >
 319             {i18n.t('next')}
 320           </button>
 321         )}
 322       </div>
 323     );
 324   }
 325
 326   nextPage(i: Community) {
 327     i.updateUrl({ page: i.state.page + 1 });
 328     window.scrollTo(0, 0);
 329   }
 330
 331   prevPage(i: Community) {
 332     i.updateUrl({ page: i.state.page - 1 });
 333     window.scrollTo(0, 0);
 334   }
 335
 336   handleSortChange(val: SortType) {
 337     this.updateUrl({ sort: val, page: 1 });
 338     window.scrollTo(0, 0);
 339   }
 340
 341   handleDataTypeChange(val: DataType) {
 342     this.updateUrl({ dataType: DataType[val], page: 1 });
 343     window.scrollTo(0, 0);
 344   }
 345
 346   updateUrl(paramUpdates: UrlParams) {
 347     const dataTypeStr = paramUpdates.dataType || DataType[this.state.dataType];
 348     const sortStr = paramUpdates.sort || this.state.sort;
 349     const page = paramUpdates.page || this.state.page;
 350     this.props.history.push(
 351       `/c/${this.state.community.name}/data_type/${dataTypeStr}/sort/${sortStr}/page/${page}`
 352     );
 353   }
 354
 355   fetchData() {
 356     if (this.state.dataType == DataType.Post) {
 357       let getPostsForm: GetPostsForm = {
 358         page: this.state.page,
 359         limit: fetchLimit,
 360         sort: this.state.sort,
 361         type_: ListingType.Community,
 362         community_id: this.state.community.id,
 363       };
 364       WebSocketService.Instance.getPosts(getPostsForm);
 365     } else {
 366       let getCommentsForm: GetCommentsForm = {
 367         page: this.state.page,
 368         limit: fetchLimit,
 369         sort: this.state.sort,
 370         type_: ListingType.Community,
 371         community_id: this.state.community.id,
 372       };
 373       WebSocketService.Instance.getComments(getCommentsForm);
 374     }
 375   }
 376
 377   parseMessage(msg: WebSocketJsonResponse) {
 378     console.log(msg);
 379     let res = wsJsonToRes(msg);
 380     if (msg.error) {
 381       toast(i18n.t(msg.error), 'danger');
 382       this.context.router.history.push('/');
 383       return;
 384     } else if (msg.reconnect) {
 385       this.fetchData();
 386     } else if (res.op == UserOperation.GetCommunity) {
 387       let data = res.data as GetCommunityResponse;
 388       this.state.community = data.community;
 389       this.state.moderators = data.moderators;
 390       this.state.online = data.online;
 391       this.setState(this.state);
 392       this.fetchData();
 393     } else if (
 394       res.op == UserOperation.EditCommunity ||
 395       res.op == UserOperation.DeleteCommunity ||
 396       res.op == UserOperation.RemoveCommunity
 397     ) {
 398       let data = res.data as CommunityResponse;
 399       this.state.community = data.community;
 400       this.setState(this.state);
 401     } else if (res.op == UserOperation.FollowCommunity) {
 402       let data = res.data as CommunityResponse;
 403       this.state.community.subscribed = data.community.subscribed;
 404       this.state.community.number_of_subscribers =
 405         data.community.number_of_subscribers;
 406       this.setState(this.state);
 407     } else if (res.op == UserOperation.GetPosts) {
 408       let data = res.data as GetPostsResponse;
 409       this.state.posts = data.posts;
 410       this.state.loading = false;
 411       this.setState(this.state);
 412       setupTippy();
 413     } else if (
 414       res.op == UserOperation.EditPost ||
 415       res.op == UserOperation.DeletePost ||
 416       res.op == UserOperation.RemovePost ||
 417       res.op == UserOperation.LockPost ||
 418       res.op == UserOperation.StickyPost
 419     ) {
 420       let data = res.data as PostResponse;
 421       editPostFindRes(data, this.state.posts);
 422       this.setState(this.state);
 423     } else if (res.op == UserOperation.CreatePost) {
 424       let data = res.data as PostResponse;
 425       this.state.posts.unshift(data.post);
 426       notifyPost(data.post, this.context.router);
 427       this.setState(this.state);
 428     } else if (res.op == UserOperation.CreatePostLike) {
 429       let data = res.data as PostResponse;
 430       createPostLikeFindRes(data, this.state.posts);
 431       this.setState(this.state);
 432     } else if (res.op == UserOperation.AddModToCommunity) {
 433       let data = res.data as AddModToCommunityResponse;
 434       this.state.moderators = data.moderators;
 435       this.setState(this.state);
 436     } else if (res.op == UserOperation.BanFromCommunity) {
 437       let data = res.data as BanFromCommunityResponse;
 438
 439       this.state.posts
 440         .filter(p => p.creator_id == data.user.id)
 441         .forEach(p => (p.banned = data.banned));
 442
 443       this.setState(this.state);
 444     } else if (res.op == UserOperation.GetComments) {
 445       let data = res.data as GetCommentsResponse;
 446       this.state.comments = data.comments;
 447       this.state.loading = false;
 448       this.setState(this.state);
 449     } else if (
 450       res.op == UserOperation.EditComment ||
 451       res.op == UserOperation.DeleteComment ||
 452       res.op == UserOperation.RemoveComment
 453     ) {
 454       let data = res.data as CommentResponse;
 455       editCommentRes(data, this.state.comments);
 456       this.setState(this.state);
 457     } else if (res.op == UserOperation.CreateComment) {
 458       let data = res.data as CommentResponse;
 459
 460       // Necessary since it might be a user reply
 461       if (data.recipient_ids.length == 0) {
 462         this.state.comments.unshift(data.comment);
 463         this.setState(this.state);
 464       }
 465     } else if (res.op == UserOperation.SaveComment) {
 466       let data = res.data as CommentResponse;
 467       saveCommentRes(data, this.state.comments);
 468       this.setState(this.state);
 469     } else if (res.op == UserOperation.CreateCommentLike) {
 470       let data = res.data as CommentResponse;
 471       createCommentLikeRes(data, this.state.comments);
 472       this.setState(this.state);
 473     } else if (res.op == UserOperation.GetSite) {
 474       let data = res.data as GetSiteResponse;
 475       this.state.site = data.site;
 476       this.state.admins = data.admins;
 477       this.setState(this.state);
 478     }
 479   }
 480 }