src/shared/components/post/post-listings.tsx

   1 import { Component } from "inferno";
   2 import { T } from "inferno-i18next-dess";
   3 import { Link } from "inferno-router";
   4 import {
   5   AddAdmin,
   6   AddModToCommunity,
   7   BanFromCommunity,
   8   BanPerson,
   9   BlockPerson,
  10   CreatePostLike,
  11   CreatePostReport,
  12   DeletePost,
  13   EditPost,
  14   FeaturePost,
  15   Language,
  16   LockPost,
  17   PostView,
  18   PurgePerson,
  19   PurgePost,
  20   RemovePost,
  21   SavePost,
  22   TransferCommunity,
  23 } from "lemmy-js-client";
  24 import { I18NextService } from "../../services";
  25 import { PostListing } from "./post-listing";
  26
  27 interface PostListingsProps {
  28   posts: PostView[];
  29   allLanguages: Language[];
  30   siteLanguages: number[];
  31   showCommunity?: boolean;
  32   removeDuplicates?: boolean;
  33   enableDownvotes?: boolean;
  34   enableNsfw?: boolean;
  35   viewOnly?: boolean;
  36   onPostEdit(form: EditPost): void;
  37   onPostVote(form: CreatePostLike): void;
  38   onPostReport(form: CreatePostReport): void;
  39   onBlockPerson(form: BlockPerson): void;
  40   onLockPost(form: LockPost): void;
  41   onDeletePost(form: DeletePost): void;
  42   onRemovePost(form: RemovePost): void;
  43   onSavePost(form: SavePost): void;
  44   onFeaturePost(form: FeaturePost): void;
  45   onPurgePerson(form: PurgePerson): void;
  46   onPurgePost(form: PurgePost): void;
  47   onBanPersonFromCommunity(form: BanFromCommunity): void;
  48   onBanPerson(form: BanPerson): void;
  49   onAddModToCommunity(form: AddModToCommunity): void;
  50   onAddAdmin(form: AddAdmin): void;
  51   onTransferCommunity(form: TransferCommunity): void;
  52 }
  53
  54 export class PostListings extends Component<PostListingsProps, any> {
  55   duplicatesMap = new Map<number, PostView[]>();
  56
  57   constructor(props: any, context: any) {
  58     super(props, context);
  59   }
  60
  61   get posts() {
  62     return this.props.removeDuplicates
  63       ? this.removeDuplicates()
  64       : this.props.posts;
  65   }
  66
  67   render() {
  68     return (
  69       <div className="post-listings">
  70         {this.posts.length > 0 ? (
  71           this.posts.map((post_view, idx) => (
  72             <>
  73               <PostListing
  74                 post_view={post_view}
  75                 crossPosts={this.duplicatesMap.get(post_view.post.id)}
  76                 showCommunity={this.props.showCommunity}
  77                 enableDownvotes={this.props.enableDownvotes}
  78                 enableNsfw={this.props.enableNsfw}
  79                 hideAvatars={true}
  80                 viewOnly={this.props.viewOnly}
  81                 allLanguages={this.props.allLanguages}
  82                 siteLanguages={this.props.siteLanguages}
  83                 onPostEdit={this.props.onPostEdit}
  84                 onPostVote={this.props.onPostVote}
  85                 onPostReport={this.props.onPostReport}
  86                 onBlockPerson={this.props.onBlockPerson}
  87                 onLockPost={this.props.onLockPost}
  88                 onDeletePost={this.props.onDeletePost}
  89                 onRemovePost={this.props.onRemovePost}
  90                 onSavePost={this.props.onSavePost}
  91                 onFeaturePost={this.props.onFeaturePost}
  92                 onPurgePerson={this.props.onPurgePerson}
  93                 onPurgePost={this.props.onPurgePost}
  94                 onBanPersonFromCommunity={this.props.onBanPersonFromCommunity}
  95                 onBanPerson={this.props.onBanPerson}
  96                 onAddModToCommunity={this.props.onAddModToCommunity}
  97                 onAddAdmin={this.props.onAddAdmin}
  98                 onTransferCommunity={this.props.onTransferCommunity}
  99               />
 100               {idx + 1 !== this.posts.length && <hr className="my-3" />}
 101             </>
 102           ))
 103         ) : (
 104           <>
 105             <div>{I18NextService.i18n.t("no_posts")}</div>
 106             {this.props.showCommunity && (
 107               <T i18nKey="subscribe_to_communities">
 108                 #<Link to="/communities">#</Link>
 109               </T>
 110             )}
 111           </>
 112         )}
 113       </div>
 114     );
 115   }
 116
 117   removeDuplicates(): PostView[] {
 118     // Must use a spread to clone the props, because splice will fail below otherwise.
 119     const posts = [...this.props.posts].filter(empty => empty);
 120
 121     // A map from post url to list of posts (dupes)
 122     const urlMap = new Map<string, PostView[]>();
 123
 124     // Loop over the posts, find ones with same urls
 125     for (const pv of posts) {
 126       const url = pv.post.url;
 127       if (
 128         !pv.post.deleted &&
 129         !pv.post.removed &&
 130         !pv.community.deleted &&
 131         !pv.community.removed &&
 132         url
 133       ) {
 134         if (!urlMap.get(url)) {
 135           urlMap.set(url, [pv]);
 136         } else {
 137           urlMap.get(url)?.push(pv);
 138         }
 139       }
 140     }
 141
 142     // Sort by oldest
 143     // Remove the ones that have no length
 144     for (const e of urlMap.entries()) {
 145       if (e[1].length == 1) {
 146         urlMap.delete(e[0]);
 147       } else {
 148         e[1].sort((a, b) => a.post.published.localeCompare(b.post.published));
 149       }
 150     }
 151
 152     for (let i = 0; i < posts.length; i++) {
 153       const pv = posts[i];
 154       const url = pv.post.url;
 155       if (url) {
 156         const found = urlMap.get(url);
 157         if (found) {
 158           // If its the oldest, add
 159           if (pv.post.id == found[0].post.id) {
 160             this.duplicatesMap.set(pv.post.id, found.slice(1));
 161           }
 162           // Otherwise, delete it
 163           else {
 164             posts.splice(i--, 1);
 165           }
 166         }
 167       }
 168     }
 169
 170     return posts;
 171   }
 172 }