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   loading: boolean;
  22 }
  23
  24 export class PostListings extends Component<PostListingsProps, PostListingsState> {
  25
  26   private subscription: Subscription;
  27   private emptyState: PostListingsState = {
  28     community: {
  29       id: null,
  30       name: null,
  31       title: null,
  32       category_id: null,
  33       category_name: null,
  34       creator_id: null,
  35       creator_name: null,
  36       number_of_subscribers: null,
  37       number_of_posts: null,
  38       number_of_comments: null,
  39       published: null
  40     },
  41     moderators: [],
  42     posts: [],
  43     sortType: SortType.Hot,
  44     type_: this.props.communityId
  45     ? ListingType.Community
  46     : UserService.Instance.user
  47     ? ListingType.Subscribed
  48     : ListingType.All,
  49     loading: true
  50   }
  51
  52   constructor(props: any, context: any) {
  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: SortType[SortType.Hot],
  71     }
  72     WebSocketService.Instance.getPosts(getPostsForm);
  73   }
  74
  75   componentWillUnmount() {
  76     this.subscription.unsubscribe();
  77   }
  78
  79   render() {
  80     return (
  81       <div>
  82         {this.state.loading ?
  83         <h4><svg class="icon icon-spinner spin"><use xlinkHref="#icon-spinner"></use></svg></h4> :
  84         <div>
  85           <div>{this.selects()}</div>
  86           {this.state.posts.length > 0
  87             ? this.state.posts.map(post =>
  88               <PostListing post={post} showCommunity={!this.props.communityId}/>)
  89                 : <div>No Listings. {!this.props.communityId && <span>Subscribe to some <Link to="/communities">forums</Link>.</span>}</div>
  90           }
  91         </div>
  92         }
  93       </div>
  94     )
  95   }
  96
  97   selects() {
  98     return (
  99       <div className="mb-2">
 100         <select value={this.state.sortType} onChange={linkEvent(this, this.handleSortChange)} class="custom-select w-auto">
 101           <option disabled>Sort Type</option>
 102           <option value={SortType.Hot}>Hot</option>
 103           <option value={SortType.New}>New</option>
 104           <option disabled>──────────</option>
 105           <option value={SortType.TopDay}>Top Day</option>
 106           <option value={SortType.TopWeek}>Week</option>
 107           <option value={SortType.TopMonth}>Month</option>
 108           <option value={SortType.TopYear}>Year</option>
 109           <option value={SortType.TopAll}>All</option>
 110         </select>
 111         {!this.props.communityId &&
 112           UserService.Instance.user &&
 113             <select value={this.state.type_} onChange={linkEvent(this, this.handleTypeChange)} class="ml-2 custom-select w-auto">
 114               <option disabled>Type</option>
 115               <option value={ListingType.All}>All</option>
 116               <option value={ListingType.Subscribed}>Subscribed</option>
 117             </select>
 118
 119         }
 120       </div>
 121     )
 122
 123   }
 124
 125   handleSortChange(i: PostListings, event: any) {
 126     i.state.sortType = Number(event.target.value);
 127     i.setState(i.state);
 128
 129     let getPostsForm: GetPostsForm = {
 130       community_id: i.state.community.id,
 131       limit: 10,
 132       sort: SortType[i.state.sortType],
 133       type_: ListingType[ListingType.Community]
 134     }
 135     WebSocketService.Instance.getPosts(getPostsForm);
 136   }
 137
 138   handleTypeChange(i: PostListings, event: any) {
 139     i.state.type_ = Number(event.target.value);
 140     i.setState(i.state);
 141
 142     let getPostsForm: GetPostsForm = {
 143       limit: 10,
 144       sort: SortType[i.state.sortType],
 145       type_: ListingType[i.state.type_]
 146     }
 147     WebSocketService.Instance.getPosts(getPostsForm);
 148   }
 149
 150   parseMessage(msg: any) {
 151     console.log(msg);
 152     let op: UserOperation = msgOp(msg);
 153     if (msg.error) {
 154       alert(msg.error);
 155       return;
 156     } else if (op == UserOperation.GetPosts) {
 157       let res: GetPostsResponse = msg;
 158       this.state.posts = res.posts;
 159       this.state.loading = false;
 160       this.setState(this.state);
 161     } else if (op == UserOperation.CreatePostLike) {
 162       let res: CreatePostLikeResponse = msg;
 163       let found = this.state.posts.find(c => c.id == res.post.id);
 164       found.my_vote = res.post.my_vote;
 165       found.score = res.post.score;
 166       found.upvotes = res.post.upvotes;
 167       found.downvotes = res.post.downvotes;
 168       this.setState(this.state);
 169     }
 170   }
 171 }
 172
 173