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