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