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import { Component, linkEvent } from 'inferno';
import { Subscription } from "rxjs";
import { retryWhen, delay, take } from 'rxjs/operators';
import { UserOperation, Community, Post as PostI, PostResponse, Comment, CommentForm } from '../interfaces';
import { WebSocketService, UserService } from '../services';
import { msgOp } from '../utils';
interface State {
post: PostI;
commentForm: CommentForm;
comments: Array<Comment>;
}
export class Post extends Component<any, State> {
private subscription: Subscription;
private emptyState: State = {
post: {
name: null,
attributed_to: null,
community_id: null,
id: null,
published: null,
},
commentForm: {
auth: null,
content: null,
post_id: null
},
comments: []
}
constructor(props, context) {
super(props, context);
let postId = Number(this.props.match.params.id);
this.state = this.emptyState;
this.state.commentForm.post_id = postId;
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();
}
render() {
return (
<div class="container">
<div class="row">
<div class="col-12 col-lg-6 mb-4">
{this.state.post.name}
{this.commentForm()}
{this.comments()}
</div>
</div>
</div>
)
}
comments() {
return (
<div>
<h3>Comments</h3>
{this.state.comments.map(comment =>
<div>{comment.content}</div>
)}
</div>
)
}
commentForm() {
return (
<div>
<form onSubmit={linkEvent(this, this.handleCreateCommentSubmit)}>
<h3>Create Comment</h3>
<div class="form-group row">
<label class="col-sm-2 col-form-label">Name</label>
<div class="col-sm-10">
<textarea class="form-control" value={this.state.commentForm.content} onInput={linkEvent(this, this.handleCommentContentChange)} required minLength={3} />
</div>
</div>
<div class="form-group row">
<div class="col-sm-10">
<button type="submit" class="btn btn-secondary">Create</button>
</div>
</div>
</form>
</div>
);
}
handleCreateCommentSubmit(i: Post, event) {
event.preventDefault();
WebSocketService.Instance.createComment(i.state.commentForm);
}
handleCommentContentChange(i: Post, event) {
i.state.commentForm.content = event.target.value;
i.setState(i.state);
}
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: PostResponse = msg;
this.state.post = res.post;
this.state.comments = res.comments;
this.setState(this.state);
}
}
}
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