230 lines
7 KiB
TypeScript
230 lines
7 KiB
TypeScript
import { Component, linkEvent } from 'inferno';
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import { Subscription } from "rxjs";
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import { retryWhen, delay, take } from 'rxjs/operators';
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import { UserOperation, Community as CommunityI, GetCommunityResponse, CommunityResponse, CommunityUser, UserView, SortType, Post, GetPostsForm, ListingType, GetPostsResponse, CreatePostLikeResponse } from '../interfaces';
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import { WebSocketService } from '../services';
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import { PostListings } from './post-listings';
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import { Sidebar } from './sidebar';
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import { msgOp, routeSortTypeToEnum, fetchLimit } from '../utils';
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interface State {
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community: CommunityI;
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communityId: number;
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communityName: string;
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moderators: Array<CommunityUser>;
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admins: Array<UserView>;
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loading: boolean;
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posts: Array<Post>;
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sort: SortType;
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page: number;
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}
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export class Community extends Component<any, State> {
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private subscription: Subscription;
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private emptyState: State = {
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community: {
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id: null,
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name: null,
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title: null,
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category_id: null,
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category_name: null,
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creator_id: null,
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creator_name: null,
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number_of_subscribers: null,
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number_of_posts: null,
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number_of_comments: null,
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published: null,
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removed: null,
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},
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moderators: [],
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admins: [],
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communityId: Number(this.props.match.params.id),
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communityName: this.props.match.params.name,
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loading: true,
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posts: [],
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sort: this.getSortTypeFromProps(this.props),
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page: this.getPageFromProps(this.props),
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}
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getSortTypeFromProps(props: any): SortType {
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return (props.match.params.sort) ?
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routeSortTypeToEnum(props.match.params.sort) :
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SortType.Hot;
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}
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getPageFromProps(props: any): number {
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return (props.match.params.page) ? Number(props.match.params.page) : 1;
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}
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constructor(props: any, context: any) {
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super(props, context);
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this.state = this.emptyState;
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this.subscription = WebSocketService.Instance.subject
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.pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
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.subscribe(
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(msg) => this.parseMessage(msg),
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(err) => console.error(err),
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() => console.log('complete')
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);
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if (this.state.communityId) {
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WebSocketService.Instance.getCommunity(this.state.communityId);
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} else if (this.state.communityName) {
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WebSocketService.Instance.getCommunityByName(this.state.communityName);
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}
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}
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componentWillUnmount() {
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this.subscription.unsubscribe();
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}
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// Necessary for back button for some reason
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componentWillReceiveProps(nextProps: any) {
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if (nextProps.history.action == 'POP') {
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this.state = this.emptyState;
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this.state.sort = this.getSortTypeFromProps(nextProps);
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this.state.page = this.getPageFromProps(nextProps);
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this.fetchPosts();
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}
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}
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render() {
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return (
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<div class="container">
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{this.state.loading ?
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<h5><svg class="icon icon-spinner spin"><use xlinkHref="#icon-spinner"></use></svg></h5> :
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<div class="row">
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<div class="col-12 col-md-9">
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<h5>{this.state.community.title}
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{this.state.community.removed &&
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<small className="ml-2 text-muted font-italic">removed</small>
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}
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</h5>
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{this.selects()}
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<PostListings posts={this.state.posts} />
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{this.paginator()}
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</div>
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<div class="col-12 col-md-3">
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<Sidebar
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community={this.state.community}
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moderators={this.state.moderators}
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admins={this.state.admins}
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/>
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</div>
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</div>
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}
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</div>
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)
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}
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selects() {
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return (
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<div className="mb-2">
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<select value={this.state.sort} onChange={linkEvent(this, this.handleSortChange)} class="custom-select w-auto">
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<option disabled>Sort Type</option>
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<option value={SortType.Hot}>Hot</option>
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<option value={SortType.New}>New</option>
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<option disabled>──────────</option>
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<option value={SortType.TopDay}>Top Day</option>
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<option value={SortType.TopWeek}>Week</option>
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<option value={SortType.TopMonth}>Month</option>
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<option value={SortType.TopYear}>Year</option>
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<option value={SortType.TopAll}>All</option>
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</select>
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</div>
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)
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}
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paginator() {
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return (
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<div class="mt-2">
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{this.state.page > 1 &&
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<button class="btn btn-sm btn-secondary mr-1" onClick={linkEvent(this, this.prevPage)}>Prev</button>
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}
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<button class="btn btn-sm btn-secondary" onClick={linkEvent(this, this.nextPage)}>Next</button>
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</div>
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);
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}
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nextPage(i: Community) {
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i.state.page++;
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i.setState(i.state);
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i.updateUrl();
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i.fetchPosts();
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}
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prevPage(i: Community) {
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i.state.page--;
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i.setState(i.state);
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i.updateUrl();
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i.fetchPosts();
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}
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handleSortChange(i: Community, event: any) {
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i.state.sort = Number(event.target.value);
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i.state.page = 1;
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i.setState(i.state);
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i.updateUrl();
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i.fetchPosts();
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}
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updateUrl() {
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let sortStr = SortType[this.state.sort].toLowerCase();
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this.props.history.push(`/c/${this.state.community.name}/sort/${sortStr}/page/${this.state.page}`);
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}
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fetchPosts() {
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let getPostsForm: GetPostsForm = {
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page: this.state.page,
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limit: fetchLimit,
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sort: SortType[this.state.sort],
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type_: ListingType[ListingType.Community],
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community_id: this.state.community.id,
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}
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WebSocketService.Instance.getPosts(getPostsForm);
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}
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parseMessage(msg: any) {
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console.log(msg);
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let op: UserOperation = msgOp(msg);
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if (msg.error) {
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alert(msg.error);
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return;
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} else if (op == UserOperation.GetCommunity) {
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let res: GetCommunityResponse = msg;
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this.state.community = res.community;
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this.state.moderators = res.moderators;
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this.state.admins = res.admins;
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document.title = `/c/${this.state.community.name} - Lemmy`;
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this.setState(this.state);
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this.fetchPosts();
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} else if (op == UserOperation.EditCommunity) {
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let res: CommunityResponse = msg;
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this.state.community = res.community;
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this.setState(this.state);
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} else if (op == UserOperation.FollowCommunity) {
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let res: CommunityResponse = msg;
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this.state.community.subscribed = res.community.subscribed;
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this.state.community.number_of_subscribers = res.community.number_of_subscribers;
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this.setState(this.state);
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} else if (op == UserOperation.GetPosts) {
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let res: GetPostsResponse = msg;
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this.state.posts = res.posts;
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this.state.loading = false;
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this.setState(this.state);
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} else if (op == UserOperation.CreatePostLike) {
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let res: CreatePostLikeResponse = msg;
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let found = this.state.posts.find(c => c.id == res.post.id);
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found.my_vote = res.post.my_vote;
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found.score = res.post.score;
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found.upvotes = res.post.upvotes;
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found.downvotes = res.post.downvotes;
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this.setState(this.state);
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}
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}
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}
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