lemmy/ui/src/components/community.tsx

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import { Component, linkEvent } from 'inferno';
import { Link } from 'inferno-router';
import { Subscription } from "rxjs";
import { retryWhen, delay, take } from 'rxjs/operators';
import { UserOperation, Community as CommunityI, GetCommunityResponse, CommunityResponse, Post, GetPostsForm, ListingSortType, ListingType, GetPostsResponse, CreatePostLikeForm, CreatePostLikeResponse, CommunityUser} from '../interfaces';
import { WebSocketService, UserService } from '../services';
import { MomentTime } from './moment-time';
import { PostListing } from './post-listing';
import { Sidebar } from './sidebar';
import { msgOp, mdToHtml } from '../utils';
interface State {
community: CommunityI;
moderators: Array<CommunityUser>;
posts: Array<Post>;
sortType: ListingSortType;
}
export class Community extends Component<any, State> {
private subscription: Subscription;
private emptyState: State = {
community: {
id: null,
name: null,
title: null,
category_id: null,
category_name: null,
creator_id: null,
creator_name: null,
number_of_subscribers: null,
number_of_posts: null,
number_of_comments: null,
published: null
},
moderators: [],
posts: [],
sortType: ListingSortType.Hot,
}
constructor(props, context) {
super(props, context);
this.state = this.emptyState;
this.subscription = WebSocketService.Instance.subject
.pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
.subscribe(
(msg) => this.parseMessage(msg),
(err) => console.error(err),
() => console.log('complete')
);
let communityId = Number(this.props.match.params.id);
WebSocketService.Instance.getCommunity(communityId);
let getPostsForm: GetPostsForm = {
community_id: communityId,
limit: 10,
sort: ListingSortType[ListingSortType.Hot],
type_: ListingType[ListingType.Community]
}
WebSocketService.Instance.getPosts(getPostsForm);
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
render() {
return (
<div class="container">
<div class="row">
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<div class="col-12 col-lg-9">
<h4>/f/{this.state.community.name}</h4>
<div>{this.selects()}</div>
{this.state.posts.length > 0
? this.state.posts.map(post =>
<PostListing post={post} />)
: <div>no listings</div>
}
</div>
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<div class="col-12 col-lg-3">
<Sidebar community={this.state.community} moderators={this.state.moderators} />
</div>
</div>
</div>
)
}
selects() {
return (
<div className="mb-2">
<select value={this.state.sortType} onChange={linkEvent(this, this.handleSortChange)} class="custom-select w-auto">
<option disabled>Sort Type</option>
<option value={ListingSortType.Hot}>Hot</option>
<option value={ListingSortType.New}>New</option>
<option disabled></option>
<option value={ListingSortType.TopDay}>Top Day</option>
<option value={ListingSortType.TopWeek}>Week</option>
<option value={ListingSortType.TopMonth}>Month</option>
<option value={ListingSortType.TopYear}>Year</option>
<option value={ListingSortType.TopAll}>All</option>
</select>
</div>
)
}
handleSortChange(i: Community, event) {
i.state.sortType = Number(event.target.value);
i.setState(i.state);
let getPostsForm: GetPostsForm = {
community_id: i.state.community.id,
limit: 10,
sort: ListingSortType[i.state.sortType],
type_: ListingType[ListingType.Community]
}
WebSocketService.Instance.getPosts(getPostsForm);
}
parseMessage(msg: any) {
console.log(msg);
let op: UserOperation = msgOp(msg);
if (msg.error) {
alert(msg.error);
return;
} else if (op == UserOperation.GetCommunity) {
let res: GetCommunityResponse = msg;
this.state.community = res.community;
this.state.moderators = res.moderators;
this.setState(this.state);
} else if (op == UserOperation.GetPosts) {
let res: GetPostsResponse = msg;
this.state.posts = res.posts;
this.setState(this.state);
} else if (op == UserOperation.CreatePostLike) {
let res: CreatePostLikeResponse = msg;
let found = this.state.posts.find(c => c.id == res.post.id);
found.my_vote = res.post.my_vote;
found.score = res.post.score;
found.upvotes = res.post.upvotes;
found.downvotes = res.post.downvotes;
this.setState(this.state);
} else if (op == UserOperation.EditCommunity) {
let res: CommunityResponse = msg;
this.state.community = res.community;
this.setState(this.state);
} else if (op == UserOperation.FollowCommunity) {
let res: CommunityResponse = msg;
this.state.community.subscribed = res.community.subscribed;
this.state.community.number_of_subscribers = res.community.number_of_subscribers;
this.setState(this.state);
}
}
}