307 lines
8.8 KiB
TypeScript
307 lines
8.8 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, Post as PostI, PostResponse, Comment, CommentForm as CommentFormI, CommentResponse } from '../interfaces';
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import { WebSocketService, UserService } from '../services';
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import { msgOp } from '../utils';
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interface CommentNodeI {
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comment: Comment;
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children?: Array<CommentNodeI>;
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showReply?: boolean;
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};
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interface State {
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post: PostI;
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comments: Array<Comment>;
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}
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export class Post extends Component<any, State> {
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private subscription: Subscription;
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private emptyState: State = {
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post: {
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name: null,
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attributed_to: null,
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community_id: null,
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id: null,
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published: null,
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},
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comments: []
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}
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constructor(props, context) {
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super(props, context);
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this.state = this.emptyState;
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this.state.post.id = Number(this.props.match.params.id);
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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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WebSocketService.Instance.getPost(this.state.post.id);
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}
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componentWillUnmount() {
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this.subscription.unsubscribe();
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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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<div class="row">
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<div class="col-12 col-sm-8 col-lg-7 mb-3">
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{this.postHeader()}
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<CommentForm postId={this.state.post.id} />
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{this.commentsTree()}
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</div>
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<div class="col-12 col-sm-4 col-lg-3 mb-3">
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{this.newComments()}
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</div>
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<div class="col-12 col-sm-12 col-lg-2">
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{this.sidebar()}
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</div>
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</div>
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</div>
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)
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}
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postHeader() {
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let title = this.state.post.url
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? <h5><a href={this.state.post.url}>{this.state.post.name}</a></h5>
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: <h5>{this.state.post.name}</h5>;
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return (
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<div>
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{title}
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via {this.state.post.attributed_to} X hours ago
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{this.state.post.body}
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</div>
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)
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}
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newComments() {
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return (
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<div class="sticky-top">
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<h4>New Comments</h4>
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{this.state.comments.map(comment =>
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<CommentNodes nodes={[{comment: comment}]} />
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)}
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</div>
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)
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}
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sidebar() {
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return (
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<div class="sticky-top">
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<h4>Sidebar</h4>
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<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
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</div>
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);
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}
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// buildCommentsTree(): Array<CommentNodeI> {
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buildCommentsTree(): any {
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let tree: Array<CommentNodeI> = this.createCommentsTree(this.state.comments);
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console.log(tree); // TODO this is redoing every time and it shouldn't
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return tree;
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}
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private createCommentsTree(comments: Array<Comment>): Array<CommentNodeI> {
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let hashTable = {};
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for (let comment of comments) {
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let node: CommentNodeI = {
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comment: comment
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};
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hashTable[comment.id] = { ...node, children : [] };
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}
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let tree: Array<CommentNodeI> = [];
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for (let comment of comments) {
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if( comment.parent_id ) hashTable[comment.parent_id].children.push(hashTable[comment.id]);
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else tree.push(hashTable[comment.id]);
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}
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return tree;
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}
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commentsTree() {
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let nodes = this.buildCommentsTree();
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return (
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<div className="">
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<CommentNodes nodes={nodes} />
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</div>
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);
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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.GetPost) {
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let res: PostResponse = msg;
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this.state.post = res.post;
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this.state.comments = res.comments;
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this.setState(this.state);
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} else if (op == UserOperation.CreateComment) {
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let res: CommentResponse = msg;
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this.state.comments.unshift(res.comment);
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this.setState(this.state);
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}
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}
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}
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interface CommentNodesState {
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}
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interface CommentNodesProps {
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nodes: Array<CommentNodeI>;
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}
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export class CommentNodes extends Component<CommentNodesProps, CommentNodesState> {
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constructor(props, context) {
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super(props, context);
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this.handleReplyClick = this.handleReplyClick.bind(this);
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this.handleReplyCancel = this.handleReplyCancel.bind(this);
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}
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render() {
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return (
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<div className="comments">
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{this.props.nodes.map(node =>
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<div className={`comment ${node.comment.parent_id ? 'ml-4' : ''}`}>
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<div className="float-left small text-center">
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<div className="pointer upvote">▲</div>
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<div>20</div>
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<div className="pointer downvote">▼</div>
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</div>
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<div className="details ml-4">
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<ul class="list-inline mb-0 text-muted small">
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<li className="list-inline-item">
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<a href={node.comment.attributed_to}>{node.comment.attributed_to}</a>
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</li>
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<li className="list-inline-item">
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<span>(
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<span className="text-info"> +1300</span>
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<span> | </span>
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<span className="text-danger">-29</span>
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<span> ) points</span>
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</span>
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</li>
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<li className="list-inline-item">
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<span>X hours ago</span>
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</li>
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</ul>
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<p className="mb-0">{node.comment.content}</p>
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<ul class="list-inline mb-1 text-muted small font-weight-bold">
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<li className="list-inline-item">
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<span class="pointer" onClick={linkEvent(node, this.handleReplyClick)}>reply</span>
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</li>
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<li className="list-inline-item">
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<a className="text-muted" href="test">link</a>
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</li>
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</ul>
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</div>
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{node.showReply && <CommentForm node={node} onReplyCancel={this.handleReplyCancel} />}
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{node.children && <CommentNodes nodes={node.children}/>}
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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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handleReplyClick(i: CommentNodeI, event) {
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i.showReply = true;
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this.setState(this.state);
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}
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handleReplyCancel(i: CommentNodeI): any {
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i.showReply = false;
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this.setState(this.state);
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}
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}
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interface CommentFormProps {
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postId?: number;
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node?: CommentNodeI;
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onReplyCancel?(node: CommentNodeI);
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}
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interface CommentFormState {
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commentForm: CommentFormI;
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topReply: boolean;
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}
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export class CommentForm extends Component<CommentFormProps, CommentFormState> {
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private emptyState: CommentFormState = {
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commentForm: {
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auth: null,
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content: null,
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post_id: null,
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parent_id: null
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},
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topReply: true
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}
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constructor(props, context) {
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super(props, context);
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this.state = this.emptyState;
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if (this.props.node) {
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this.state.topReply = false;
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this.state.commentForm.post_id = this.props.node.comment.post_id;
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this.state.commentForm.parent_id = this.props.node.comment.id;
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} else {
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this.state.commentForm.post_id = this.props.postId;
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}
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console.log(this.state);
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this.handleReplyCancel = this.handleReplyCancel.bind(this);
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}
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render() {
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return (
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<div>
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<form onSubmit={linkEvent(this, this.handleCreateCommentSubmit)}>
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<div class="form-group row">
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<div class="col-sm-12">
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<textarea class="form-control" value={this.state.commentForm.content} onInput={linkEvent(this, this.handleCommentContentChange)} placeholder="Comment here" required />
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</div>
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</div>
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<div class="row">
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<div class="col-sm-12">
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<button type="submit" class="btn btn-secondary mr-2">Post</button>
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{!this.state.topReply && <button type="button" class="btn btn-secondary" onClick={this.handleReplyCancel}>Cancel</button>}
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</div>
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</div>
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</form>
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</div>
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);
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}
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handleCreateCommentSubmit(i: CommentForm, event) {
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WebSocketService.Instance.createComment(i.state.commentForm);
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i.state.commentForm.content = undefined;
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i.setState(i.state);
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event.target.reset();
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}
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handleCommentContentChange(i: CommentForm, event) {
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// TODO don't use setState, it triggers a re-render
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i.state.commentForm.content = event.target.value;
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}
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handleReplyCancel(event) {
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this.props.onReplyCancel(this.props.node);
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}
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}
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