ui/src/components/post-listings.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 as CommunityI, GetCommunityResponse, CommunityResponse, Post, GetPostsForm, ListingSortType, ListingType, GetPostsResponse, CreatePostLikeForm, CreatePostLikeResponse, CommunityUser} from '../interfaces';
   6 import { WebSocketService, UserService } from '../services';
   7 import { MomentTime } from './moment-time';
   8 import { PostListing } from './post-listing';
   9 import { Sidebar } from './sidebar';
  10 import { msgOp, mdToHtml } from '../utils';
  11
  12
  13 interface PostListingsProps {
  14   communityId?: number;
  15 }
  16
  17 interface PostListingsState {
  18   community: CommunityI;
  19   moderators: Array<CommunityUser>;
  20   posts: Array<Post>;
  21   sortType: ListingSortType;
  22   type_: ListingType;
  23 }
  24
  25 export class PostListings extends Component<PostListingsProps, PostListingsState> {
  26
  27   private subscription: Subscription;
  28   private emptyState: PostListingsState = {
  29     community: {
  30       id: null,
  31       name: null,
  32       title: null,
  33       category_id: null,
  34       category_name: null,
  35       creator_id: null,
  36       creator_name: null,
  37       number_of_subscribers: null,
  38       number_of_posts: null,
  39       number_of_comments: null,
  40       published: null
  41     },
  42     moderators: [],
  43     posts: [],
  44     sortType: ListingSortType.Hot,
  45     type_: this.props.communityId
  46     ? ListingType.Community
  47     : UserService.Instance.loggedIn
  48     ? ListingType.Subscribed
  49     : ListingType.All
  50   }
  51
  52   constructor(props, context) {
  53     super(props, context);
  54
  55
  56     this.state = this.emptyState;
  57
  58     this.subscription = WebSocketService.Instance.subject
  59       .pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
  60       .subscribe(
  61         (msg) => this.parseMessage(msg),
  62         (err) => console.error(err),
  63         () => console.log('complete')
  64       );
  65
  66     let getPostsForm: GetPostsForm = {
  67       type_: ListingType[this.state.type_],
  68       community_id: this.props.communityId,
  69       limit: 10,
  70       sort: ListingSortType[ListingSortType.Hot],
  71     }
  72     WebSocketService.Instance.getPosts(getPostsForm);
  73   }
  74
  75   componentWillUnmount() {
  76     this.subscription.unsubscribe();
  77   }
  78
  79   render() {
  80     return (
  81       <div>
  82         <div>{this.selects()}</div>
  83         {this.state.posts.length > 0
  84           ? this.state.posts.map(post =>
  85             <PostListing post={post} showCommunity={!this.props.communityId}/>)
  86           : <div>No Listings. Subscribe to some <Link to="/communities">forums</Link>.</div>
  87         }
  88       </div>
  89     )
  90   }
  91
  92   selects() {
  93     return (
  94       <div className="mb-2">
  95         <select value={this.state.sortType} onChange={linkEvent(this, this.handleSortChange)} class="custom-select w-auto">
  96           <option disabled>Sort Type</option>
  97           <option value={ListingSortType.Hot}>Hot</option>
  98           <option value={ListingSortType.New}>New</option>
  99           <option disabled>──────────</option>
 100           <option value={ListingSortType.TopDay}>Top Day</option>
 101           <option value={ListingSortType.TopWeek}>Week</option>
 102           <option value={ListingSortType.TopMonth}>Month</option>
 103           <option value={ListingSortType.TopYear}>Year</option>
 104           <option value={ListingSortType.TopAll}>All</option>
 105         </select>
 106         {!this.props.communityId &&
 107           UserService.Instance.loggedIn &&
 108           <select value={this.state.type_} onChange={linkEvent(this, this.handleTypeChange)} class="ml-2 custom-select w-auto">
 109           <option disabled>Type</option>
 110           <option value={ListingType.All}>All</option>
 111           <option value={ListingType.Subscribed}>Subscribed</option>
 112         </select>
 113
 114         }
 115       </div>
 116     )
 117
 118   }
 119
 120   handleSortChange(i: PostListings, event) {
 121     i.state.sortType = Number(event.target.value);
 122     i.setState(i.state);
 123
 124     let getPostsForm: GetPostsForm = {
 125       community_id: i.state.community.id,
 126       limit: 10,
 127       sort: ListingSortType[i.state.sortType],
 128       type_: ListingType[ListingType.Community]
 129     }
 130     WebSocketService.Instance.getPosts(getPostsForm);
 131   }
 132
 133   handleTypeChange(i: PostListings, event) {
 134     i.state.type_ = Number(event.target.value);
 135     i.setState(i.state);
 136
 137     let getPostsForm: GetPostsForm = {
 138       limit: 10,
 139       sort: ListingSortType[i.state.sortType],
 140       type_: ListingType[i.state.type_]
 141     }
 142     WebSocketService.Instance.getPosts(getPostsForm);
 143   }
 144
 145   parseMessage(msg: any) {
 146     console.log(msg);
 147     let op: UserOperation = msgOp(msg);
 148     if (msg.error) {
 149       alert(msg.error);
 150       return;
 151     } else if (op == UserOperation.GetPosts) {
 152       let res: GetPostsResponse = msg;
 153       this.state.posts = res.posts;
 154       this.setState(this.state);
 155     } else if (op == UserOperation.CreatePostLike) {
 156       let res: CreatePostLikeResponse = msg;
 157       let found = this.state.posts.find(c => c.id == res.post.id);
 158       found.my_vote = res.post.my_vote;
 159       found.score = res.post.score;
 160       found.upvotes = res.post.upvotes;
 161       found.downvotes = res.post.downvotes;
 162       this.setState(this.state);
 163     }
 164   }
 165 }
 166
 167