ui/src/components/communities.tsx

   1 import { Component, linkEvent } from 'inferno';
   2 import { Link } from 'inferno-router';
   3 import { Subscription } from "rxjs";
   4 import { retryWhen, delay, take } from 'rxjs/operators';
   5 import { UserOperation, Community, Post as PostI, GetPostResponse, PostResponse, Comment, CommentForm as CommentFormI, CommentResponse, CommentLikeForm, CommentSortType, CreatePostLikeResponse, ListCommunitiesResponse } from '../interfaces';
   6 import { WebSocketService, UserService } from '../services';
   7 import { msgOp, hotRank,mdToHtml } from '../utils';
   8
   9 declare const Sortable: any;
  10
  11 interface CommunitiesState {
  12   communities: Array<Community>;
  13 }
  14
  15 export class Communities extends Component<any, CommunitiesState> {
  16   private subscription: Subscription;
  17   private emptyState: CommunitiesState = {
  18     communities: []
  19   }
  20
  21   constructor(props, context) {
  22     super(props, context);
  23     this.state = this.emptyState;
  24     this.subscription = WebSocketService.Instance.subject
  25       .pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
  26       .subscribe(
  27         (msg) => this.parseMessage(msg),
  28         (err) => console.error(err),
  29         () => console.log('complete')
  30       );
  31     WebSocketService.Instance.listCommunities();
  32   }
  33
  34   componentDidMount() {
  35     let table = document.querySelector('#community_table');
  36     Sortable.initTable(table);
  37   }
  38
  39   render() {
  40     return (
  41       <div class="container-fluid">
  42         <h4>Communities</h4>
  43         <div class="table-responsive">
  44           <table id="community_table" class="table table-sm table-hover" data-sortable>
  45             <thead>
  46               <tr>
  47                 <th>Name</th>
  48                 <th>Title</th>
  49                 <th>Category</th>
  50                 <th class="text-right">Subscribers</th>
  51                 <th class="text-right">Posts</th>
  52                 <th class="text-right">Comments</th>
  53               </tr>
  54             </thead>
  55             <tbody>
  56               {this.state.communities.map(community =>
  57                 <tr>
  58                   <td><Link to={`/community/${community.id}`}>{community.name}</Link></td>
  59                   <td>{community.title}</td>
  60                   <td>{community.category_name}</td>
  61                   <td class="text-right">{community.number_of_subscribers}</td>
  62                   <td class="text-right">{community.number_of_posts}</td>
  63                   <td class="text-right">{community.number_of_comments}</td>
  64                 </tr>
  65               )}
  66             </tbody>
  67           </table>
  68         </div>
  69       </div>
  70     );
  71   }
  72
  73
  74
  75   parseMessage(msg: any) {
  76     console.log(msg);
  77     let op: UserOperation = msgOp(msg);
  78     if (msg.error) {
  79       alert(msg.error);
  80       return;
  81     } else if (op == UserOperation.ListCommunities) {
  82       let res: ListCommunitiesResponse = msg;
  83       this.state.communities = res.communities;
  84       this.state.communities.sort((a, b) => b.number_of_subscribers - a.number_of_subscribers);
  85       this.setState(this.state);
  86     }
  87   }
  88 }