lemmy/ui/src/components/post.tsx

259 lines
8.3 KiB
TypeScript
Raw Normal View History

import { Component, linkEvent } from 'inferno';
import { Subscription } from "rxjs";
import { retryWhen, delay, take } from 'rxjs/operators';
import { UserOperation, Community, Post as PostI, GetPostResponse, PostResponse, Comment, CommentResponse, CommentSortType, CreatePostLikeResponse, CommunityUser, CommunityResponse, CommentNode as CommentNodeI } from '../interfaces';
import { WebSocketService } from '../services';
import { msgOp, hotRank } from '../utils';
import { PostListing } from './post-listing';
import { Sidebar } from './sidebar';
import { CommentForm } from './comment-form';
import { CommentNodes } from './comment-nodes';
import * as autosize from 'autosize';
interface PostState {
post: PostI;
comments: Array<Comment>;
2019-03-30 06:08:02 +00:00
commentSort: CommentSortType;
community: Community;
moderators: Array<CommunityUser>;
scrolled?: boolean;
scrolled_comment_id?: number;
loading: boolean;
}
export class Post extends Component<any, PostState> {
private subscription: Subscription;
private emptyState: PostState = {
post: null,
2019-03-30 06:08:02 +00:00
comments: [],
commentSort: CommentSortType.Hot,
community: null,
2019-04-05 20:22:59 +00:00
moderators: [],
scrolled: false,
loading: true
}
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
let postId = Number(this.props.match.params.id);
if (this.props.match.params.comment_id) {
this.state.scrolled_comment_id = this.props.match.params.comment_id;
}
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')
);
WebSocketService.Instance.getPost(postId);
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
componentDidMount() {
autosize(document.querySelectorAll('textarea'));
}
componentDidUpdate(_lastProps: any, lastState: PostState, _snapshot: any) {
if (this.state.scrolled_comment_id && !this.state.scrolled && lastState.comments.length > 0) {
var elmnt = document.getElementById(`comment-${this.state.scrolled_comment_id}`);
2019-04-05 20:22:59 +00:00
elmnt.scrollIntoView();
elmnt.classList.add("mark");
2019-04-05 20:22:59 +00:00
this.state.scrolled = true;
}
}
render() {
return (
<div class="container">
{this.state.loading ?
<h4><svg class="icon icon-spinner spin"><use xlinkHref="#icon-spinner"></use></svg></h4> :
<div class="row">
<div class="col-12 col-sm-8 col-lg-7 mb-3">
<PostListing post={this.state.post} showBody showCommunity editable />
<div className="mb-2" />
<CommentForm postId={this.state.post.id} />
{this.sortRadios()}
{this.commentsTree()}
</div>
<div class="col-12 col-sm-4 col-lg-3 mb-3">
{this.state.comments.length > 0 && this.newComments()}
</div>
<div class="col-12 col-sm-12 col-lg-2">
{this.sidebar()}
</div>
</div>
}
2019-03-27 19:54:55 +00:00
</div>
)
}
2019-03-30 06:08:02 +00:00
sortRadios() {
return (
<div class="btn-group btn-group-toggle mb-3">
<label className={`btn btn-sm btn-secondary ${this.state.commentSort === CommentSortType.Hot && 'active'}`}>Hot
<input type="radio" value={CommentSortType.Hot}
checked={this.state.commentSort === CommentSortType.Hot}
onChange={linkEvent(this, this.handleCommentSortChange)} />
</label>
<label className={`btn btn-sm btn-secondary ${this.state.commentSort === CommentSortType.Top && 'active'}`}>Top
<input type="radio" value={CommentSortType.Top}
checked={this.state.commentSort === CommentSortType.Top}
onChange={linkEvent(this, this.handleCommentSortChange)} />
</label>
<label className={`btn btn-sm btn-secondary ${this.state.commentSort === CommentSortType.New && 'active'}`}>New
<input type="radio" value={CommentSortType.New}
checked={this.state.commentSort === CommentSortType.New}
onChange={linkEvent(this, this.handleCommentSortChange)} />
</label>
</div>
)
}
newComments() {
return (
<div class="sticky-top">
<h4>New Comments</h4>
{this.state.comments.map(comment =>
2019-03-27 19:54:55 +00:00
<CommentNodes nodes={[{comment: comment}]} noIndent />
)}
</div>
)
}
sidebar() {
return (
<div class="sticky-top">
<Sidebar community={this.state.community} moderators={this.state.moderators} />
</div>
);
}
2019-03-30 06:08:02 +00:00
handleCommentSortChange(i: Post, event: any) {
2019-03-30 06:08:02 +00:00
i.state.commentSort = Number(event.target.value);
i.setState(i.state);
}
2019-03-30 06:08:02 +00:00
private buildCommentsTree(): Array<CommentNodeI> {
let map = new Map<number, CommentNodeI>();
for (let comment of this.state.comments) {
let node: CommentNodeI = {
2019-03-30 06:08:02 +00:00
comment: comment,
children: []
};
2019-03-30 06:08:02 +00:00
map.set(comment.id, { ...node });
}
let tree: Array<CommentNodeI> = [];
2019-03-30 06:08:02 +00:00
for (let comment of this.state.comments) {
if( comment.parent_id ) {
map.get(comment.parent_id).children.push(map.get(comment.id));
}
else {
tree.push(map.get(comment.id));
}
}
2019-03-30 06:08:02 +00:00
this.sortTree(tree);
return tree;
}
2019-03-30 06:08:02 +00:00
sortTree(tree: Array<CommentNodeI>) {
if (this.state.commentSort == CommentSortType.Top) {
tree.sort((a, b) => b.comment.score - a.comment.score);
} else if (this.state.commentSort == CommentSortType.New) {
tree.sort((a, b) => b.comment.published.localeCompare(a.comment.published));
} else if (this.state.commentSort == CommentSortType.Hot) {
tree.sort((a, b) => hotRank(b.comment) - hotRank(a.comment));
}
for (let node of tree) {
this.sortTree(node.children);
}
}
commentsTree() {
let nodes = this.buildCommentsTree();
return (
2019-03-27 18:37:16 +00:00
<div className="">
<CommentNodes nodes={nodes} />
</div>
);
}
parseMessage(msg: any) {
console.log(msg);
let op: UserOperation = msgOp(msg);
if (msg.error) {
alert(msg.error);
return;
} else if (op == UserOperation.GetPost) {
let res: GetPostResponse = msg;
this.state.post = res.post;
2019-03-27 18:37:16 +00:00
this.state.comments = res.comments;
this.state.community = res.community;
this.state.moderators = res.moderators;
this.state.loading = false;
this.setState(this.state);
} else if (op == UserOperation.CreateComment) {
let res: CommentResponse = msg;
this.state.comments.unshift(res.comment);
this.setState(this.state);
2019-03-29 04:56:23 +00:00
} else if (op == UserOperation.EditComment) {
let res: CommentResponse = msg;
let found = this.state.comments.find(c => c.id == res.comment.id);
found.content = res.comment.content;
found.updated = res.comment.updated;
this.setState(this.state);
}
else if (op == UserOperation.CreateCommentLike) {
let res: CommentResponse = msg;
let found: Comment = this.state.comments.find(c => c.id === res.comment.id);
found.score = res.comment.score;
found.upvotes = res.comment.upvotes;
found.downvotes = res.comment.downvotes;
if (res.comment.my_vote !== null)
found.my_vote = res.comment.my_vote;
this.setState(this.state);
} else if (op == UserOperation.CreatePostLike) {
let res: CreatePostLikeResponse = msg;
this.state.post.my_vote = res.post.my_vote;
this.state.post.score = res.post.score;
this.state.post.upvotes = res.post.upvotes;
this.state.post.downvotes = res.post.downvotes;
this.setState(this.state);
} else if (op == UserOperation.EditPost) {
let res: PostResponse = msg;
this.state.post = res.post;
this.setState(this.state);
} else if (op == UserOperation.EditCommunity) {
let res: CommunityResponse = msg;
this.state.community = res.community;
this.state.post.community_id = res.community.id;
this.state.post.community_name = res.community.name;
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);
}
}
}
2019-03-29 04:56:23 +00:00