lemmy/ui/src/components/search.tsx

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2019-04-23 22:05:50 +00:00
import { Component, linkEvent } from 'inferno';
import { Subscription } from "rxjs";
import { retryWhen, delay, take } from 'rxjs/operators';
import { UserOperation, Post, Comment, SortType, SearchForm, SearchResponse, SearchType } from '../interfaces';
import { WebSocketService } from '../services';
import { msgOp, fetchLimit } from '../utils';
import { PostListing } from './post-listing';
import { CommentNodes } from './comment-nodes';
interface SearchState {
q: string,
type_: SearchType,
sort: SortType,
page: number,
searchResponse: SearchResponse;
loading: boolean;
}
export class Search extends Component<any, SearchState> {
private subscription: Subscription;
private emptyState: SearchState = {
q: undefined,
type_: SearchType.Both,
sort: SortType.TopAll,
page: 1,
searchResponse: {
op: null,
posts: [],
comments: [],
},
loading: false,
}
constructor(props: any, context: any) {
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')
);
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
componentDidMount() {
document.title = "Search - Lemmy";
}
render() {
return (
<div class="container">
<div class="row">
<div class="col-12">
<h5>Search</h5>
{this.selects()}
{this.searchForm()}
{this.state.type_ == SearchType.Both &&
this.both()
}
{this.state.type_ == SearchType.Comments &&
this.comments()
}
{this.state.type_ == SearchType.Posts &&
this.posts()
}
{this.noResults()}
{this.paginator()}
</div>
</div>
</div>
)
}
searchForm() {
return (
<form class="form-inline" onSubmit={linkEvent(this, this.handleSearchSubmit)}>
<input type="text" class="form-control mr-2" value={this.state.q} placeholder="Search..." onInput={linkEvent(this, this.handleQChange)} required minLength={3} />
<button type="submit" class="btn btn-secondary mr-2">
{this.state.loading ?
<svg class="icon icon-spinner spin"><use xlinkHref="#icon-spinner"></use></svg> :
<span>Search</span>
}
</button>
</form>
)
}
selects() {
return (
<div className="mb-2">
<select value={this.state.type_} onChange={linkEvent(this, this.handleTypeChange)} class="custom-select custom-select-sm w-auto">
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<option disabled>Type</option>
<option value={SearchType.Both}>Both</option>
<option value={SearchType.Comments}>Comments</option>
<option value={SearchType.Posts}>Posts</option>
</select>
<select value={this.state.sort} onChange={linkEvent(this, this.handleSortChange)} class="custom-select custom-select-sm w-auto ml-2">
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<option disabled>Sort Type</option>
<option value={SortType.New}>New</option>
<option value={SortType.TopDay}>Top Day</option>
<option value={SortType.TopWeek}>Week</option>
<option value={SortType.TopMonth}>Month</option>
<option value={SortType.TopYear}>Year</option>
<option value={SortType.TopAll}>All</option>
</select>
</div>
)
}
both() {
let combined: Array<{type_: string, data: Comment | Post}> = [];
let comments = this.state.searchResponse.comments.map(e => {return {type_: "comments", data: e}});
let posts = this.state.searchResponse.posts.map(e => {return {type_: "posts", data: e}});
combined.push(...comments);
combined.push(...posts);
// Sort it
if (this.state.sort == SortType.New) {
combined.sort((a, b) => b.data.published.localeCompare(a.data.published));
} else {
combined.sort((a, b) => b.data.score - a.data.score);
}
return (
<div>
{combined.map(i =>
<div>
{i.type_ == "posts"
? <PostListing post={i.data as Post} showCommunity viewOnly />
: <CommentNodes nodes={[{comment: i.data as Comment}]} viewOnly noIndent />
}
</div>
)
}
</div>
)
}
comments() {
return (
<div>
{this.state.searchResponse.comments.map(comment =>
<CommentNodes nodes={[{comment: comment}]} noIndent viewOnly />
)}
</div>
);
}
posts() {
return (
<div>
{this.state.searchResponse.posts.map(post =>
<PostListing post={post} showCommunity viewOnly />
)}
</div>
);
}
paginator() {
return (
<div class="mt-2">
{this.state.page > 1 &&
<button class="btn btn-sm btn-secondary mr-1" onClick={linkEvent(this, this.prevPage)}>Prev</button>
}
<button class="btn btn-sm btn-secondary" onClick={linkEvent(this, this.nextPage)}>Next</button>
</div>
);
}
noResults() {
let res = this.state.searchResponse;
return (
<div>
{res && res.op && res.posts.length == 0 && res.comments.length == 0 &&
<span>No Results</span>
}
</div>
)
}
nextPage(i: Search) {
i.state.page++;
i.setState(i.state);
i.search();
}
prevPage(i: Search) {
i.state.page--;
i.setState(i.state);
i.search();
}
search() {
// TODO community
let form: SearchForm = {
q: this.state.q,
type_: SearchType[this.state.type_],
sort: SortType[this.state.sort],
page: this.state.page,
limit: fetchLimit,
};
WebSocketService.Instance.search(form);
}
handleSortChange(i: Search, event: any) {
i.state.sort = Number(event.target.value);
i.state.page = 1;
i.setState(i.state);
i.search();
}
handleTypeChange(i: Search, event: any) {
i.state.type_ = Number(event.target.value);
i.state.page = 1;
i.setState(i.state);
i.search();
}
handleSearchSubmit(i: Search, event: any) {
event.preventDefault();
i.state.loading = true;
i.search();
i.setState(i.state);
}
handleQChange(i: Search, event: any) {
i.state.q = 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.Search) {
let res: SearchResponse = msg;
this.state.searchResponse = res;
this.state.loading = false;
document.title = `Search - ${this.state.q} - Lemmy`;
this.setState(this.state);
}
}
}