lemmy/ui/src/components/main.tsx

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import { Component, linkEvent } from 'inferno';
import { Link } from 'inferno-router';
import { Subscription } from 'rxjs';
import { retryWhen, delay, take } from 'rxjs/operators';
import {
UserOperation,
CommunityUser,
GetFollowedCommunitiesResponse,
ListCommunitiesForm,
ListCommunitiesResponse,
Community,
SortType,
GetSiteResponse,
ListingType,
SiteResponse,
GetPostsResponse,
CreatePostLikeResponse,
Post,
GetPostsForm,
} from '../interfaces';
import { WebSocketService, UserService } from '../services';
import { PostListings } from './post-listings';
import { SortSelect } from './sort-select';
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import { SiteForm } from './site-form';
import {
msgOp,
repoUrl,
mdToHtml,
fetchLimit,
routeSortTypeToEnum,
routeListingTypeToEnum,
postRefetchSeconds,
} from '../utils';
import { i18n } from '../i18next';
import { T } from 'inferno-i18next';
interface MainState {
subscribedCommunities: Array<CommunityUser>;
trendingCommunities: Array<Community>;
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site: GetSiteResponse;
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showEditSite: boolean;
loading: boolean;
posts: Array<Post>;
type_: ListingType;
sort: SortType;
page: number;
}
export class Main extends Component<any, MainState> {
private subscription: Subscription;
private postFetcher: any;
private emptyState: MainState = {
subscribedCommunities: [],
trendingCommunities: [],
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site: {
op: null,
site: {
id: null,
name: null,
creator_id: null,
creator_name: null,
published: null,
number_of_users: null,
number_of_posts: null,
number_of_comments: null,
number_of_communities: null,
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},
admins: [],
banned: [],
online: null,
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},
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showEditSite: false,
loading: true,
posts: [],
type_: this.getListingTypeFromProps(this.props),
sort: this.getSortTypeFromProps(this.props),
page: this.getPageFromProps(this.props),
};
getListingTypeFromProps(props: any): ListingType {
return props.match.params.type
? routeListingTypeToEnum(props.match.params.type)
: UserService.Instance.user
? ListingType.Subscribed
: ListingType.All;
}
getSortTypeFromProps(props: any): SortType {
return props.match.params.sort
? routeSortTypeToEnum(props.match.params.sort)
: SortType.Hot;
}
getPageFromProps(props: any): number {
return props.match.params.page ? Number(props.match.params.page) : 1;
}
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
this.handleEditCancel = this.handleEditCancel.bind(this);
this.handleSortChange = this.handleSortChange.bind(this);
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')
);
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WebSocketService.Instance.getSite();
if (UserService.Instance.user) {
WebSocketService.Instance.getFollowedCommunities();
}
let listCommunitiesForm: ListCommunitiesForm = {
sort: SortType[SortType.Hot],
limit: 6,
};
WebSocketService.Instance.listCommunities(listCommunitiesForm);
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this.keepFetchingPosts();
}
componentWillUnmount() {
this.subscription.unsubscribe();
clearInterval(this.postFetcher);
}
// Necessary for back button for some reason
componentWillReceiveProps(nextProps: any) {
if (
nextProps.history.action == 'POP' ||
nextProps.history.action == 'PUSH'
) {
this.state.type_ = this.getListingTypeFromProps(nextProps);
this.state.sort = this.getSortTypeFromProps(nextProps);
this.state.page = this.getPageFromProps(nextProps);
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this.setState(this.state);
this.fetchPosts();
}
}
render() {
return (
<div class="container">
<div class="row">
<div class="col-12 col-md-8">{this.posts()}</div>
<div class="col-12 col-md-4">{this.my_sidebar()}</div>
</div>
</div>
);
}
my_sidebar() {
return (
<div>
{!this.state.loading && (
<div>
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<div class="card border-secondary mb-3">
<div class="card-body">
{this.trendingCommunities()}
{UserService.Instance.user &&
this.state.subscribedCommunities.length > 0 && (
<div>
<h5>
<T i18nKey="subscribed_to_communities">
#
<Link class="text-white" to="/communities">
#
</Link>
</T>
</h5>
<ul class="list-inline">
{this.state.subscribedCommunities.map(community => (
<li class="list-inline-item">
<Link to={`/c/${community.community_name}`}>
{community.community_name}
</Link>
</li>
))}
</ul>
</div>
)}
<Link
class="btn btn-sm btn-secondary btn-block"
to="/create_community"
>
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<T i18nKey="create_a_community">#</T>
</Link>
</div>
</div>
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{this.sidebar()}
{this.landing()}
</div>
)}
</div>
);
}
trendingCommunities() {
return (
<div>
<h5>
<T i18nKey="trending_communities">
#
<Link class="text-white" to="/communities">
#
</Link>
</T>
</h5>
<ul class="list-inline">
{this.state.trendingCommunities.map(community => (
<li class="list-inline-item">
<Link to={`/c/${community.name}`}>{community.name}</Link>
</li>
))}
</ul>
</div>
);
}
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sidebar() {
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return (
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<div>
{!this.state.showEditSite ? (
this.siteInfo()
) : (
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<SiteForm
site={this.state.site.site}
onCancel={this.handleEditCancel}
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/>
)}
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</div>
);
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}
updateUrl() {
let typeStr = ListingType[this.state.type_].toLowerCase();
let sortStr = SortType[this.state.sort].toLowerCase();
this.props.history.push(
`/home/type/${typeStr}/sort/${sortStr}/page/${this.state.page}`
);
}
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siteInfo() {
return (
<div>
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<div class="card border-secondary mb-3">
<div class="card-body">
<h5 class="mb-0">{`${this.state.site.site.name}`}</h5>
{this.canAdmin && (
<ul class="list-inline mb-1 text-muted small font-weight-bold">
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<li className="list-inline-item">
<span
class="pointer"
onClick={linkEvent(this, this.handleEditClick)}
>
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<T i18nKey="edit">#</T>
</span>
</li>
</ul>
)}
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<ul class="my-2 list-inline">
<li className="list-inline-item badge badge-secondary">
<T
i18nKey="number_online"
interpolation={{ count: this.state.site.online }}
>
#
</T>
</li>
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<li className="list-inline-item badge badge-secondary">
<T
i18nKey="number_of_users"
interpolation={{
count: this.state.site.site.number_of_users,
}}
>
#
</T>
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</li>
<li className="list-inline-item badge badge-secondary">
<T
i18nKey="number_of_communities"
interpolation={{
count: this.state.site.site.number_of_communities,
}}
>
#
</T>
</li>
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<li className="list-inline-item badge badge-secondary">
<T
i18nKey="number_of_posts"
interpolation={{
count: this.state.site.site.number_of_posts,
}}
>
#
</T>
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</li>
<li className="list-inline-item badge badge-secondary">
<T
i18nKey="number_of_comments"
interpolation={{
count: this.state.site.site.number_of_comments,
}}
>
#
</T>
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</li>
<li className="list-inline-item">
<Link className="badge badge-secondary" to="/modlog">
<T i18nKey="modlog">#</T>
</Link>
</li>
</ul>
<ul class="mt-1 list-inline small mb-0">
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<li class="list-inline-item">
<T i18nKey="admins" class="d-inline">
#
</T>
:
</li>
{this.state.site.admins.map(admin => (
<li class="list-inline-item">
<Link class="text-info" to={`/u/${admin.name}`}>
{admin.name}
</Link>
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</li>
))}
</ul>
</div>
</div>
{this.state.site.site.description && (
<div class="card border-secondary mb-3">
<div class="card-body">
<div
className="md-div"
dangerouslySetInnerHTML={mdToHtml(
this.state.site.site.description
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)}
/>
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</div>
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</div>
)}
</div>
);
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}
landing() {
return (
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<div class="card border-secondary">
<div class="card-body">
<h5>
<T i18nKey="powered_by" class="d-inline">
#
</T>
<svg class="icon mx-2">
<use xlinkHref="#icon-mouse">#</use>
</svg>
<a href={repoUrl}>
Lemmy<sup>beta</sup>
</a>
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</h5>
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<p class="mb-0">
<T i18nKey="landing_0">
#
<a href="https://en.wikipedia.org/wiki/Social_network_aggregation">
#
</a>
<a href="https://en.wikipedia.org/wiki/Fediverse">#</a>
<br></br>
<code>#</code>
<br></br>
<b>#</b>
<br></br>
<a href={repoUrl}>#</a>
<br></br>
<a href="https://www.rust-lang.org">#</a>
<a href="https://actix.rs/">#</a>
<a href="https://infernojs.org">#</a>
<a href="https://www.typescriptlang.org/">#</a>
</T>
</p>
</div>
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</div>
);
}
posts() {
return (
<div>
{this.state.loading ? (
<h5>
<svg class="icon icon-spinner spin">
<use xlinkHref="#icon-spinner"></use>
</svg>
</h5>
) : (
<div>
{this.selects()}
<PostListings posts={this.state.posts} showCommunity />
{this.paginator()}
</div>
)}
</div>
);
}
selects() {
return (
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<div className="mb-3">
<div class="btn-group btn-group-toggle">
<label
className={`btn btn-sm btn-secondary
${this.state.type_ == ListingType.Subscribed && 'active'}
${UserService.Instance.user == undefined ? 'disabled' : 'pointer'}
`}
>
<input
type="radio"
value={ListingType.Subscribed}
checked={this.state.type_ == ListingType.Subscribed}
onChange={linkEvent(this, this.handleTypeChange)}
disabled={UserService.Instance.user == undefined}
/>
{i18n.t('subscribed')}
</label>
<label
className={`pointer btn btn-sm btn-secondary ${this.state.type_ ==
ListingType.All && 'active'}`}
>
<input
type="radio"
value={ListingType.All}
checked={this.state.type_ == ListingType.All}
onChange={linkEvent(this, this.handleTypeChange)}
/>
{i18n.t('all')}
</label>
</div>
<span class="ml-2">
<SortSelect sort={this.state.sort} onChange={this.handleSortChange} />
</span>
</div>
);
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}
paginator() {
return (
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<div class="my-2">
{this.state.page > 1 && (
<button
class="btn btn-sm btn-secondary mr-1"
onClick={linkEvent(this, this.prevPage)}
>
<T i18nKey="prev">#</T>
</button>
)}
<button
class="btn btn-sm btn-secondary"
onClick={linkEvent(this, this.nextPage)}
>
<T i18nKey="next">#</T>
</button>
</div>
);
}
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get canAdmin(): boolean {
return (
UserService.Instance.user &&
this.state.site.admins
.map(a => a.id)
.includes(UserService.Instance.user.id)
);
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}
handleEditClick(i: Main) {
i.state.showEditSite = true;
i.setState(i.state);
}
handleEditCancel() {
this.state.showEditSite = false;
this.setState(this.state);
}
nextPage(i: Main) {
i.state.page++;
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i.state.loading = true;
i.setState(i.state);
i.updateUrl();
i.fetchPosts();
window.scrollTo(0, 0);
}
prevPage(i: Main) {
i.state.page--;
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i.state.loading = true;
i.setState(i.state);
i.updateUrl();
i.fetchPosts();
window.scrollTo(0, 0);
}
handleSortChange(val: SortType) {
this.state.sort = val;
this.state.page = 1;
this.state.loading = true;
this.setState(this.state);
this.updateUrl();
this.fetchPosts();
window.scrollTo(0, 0);
}
handleTypeChange(i: Main, event: any) {
i.state.type_ = Number(event.target.value);
i.state.page = 1;
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i.state.loading = true;
i.setState(i.state);
i.updateUrl();
i.fetchPosts();
window.scrollTo(0, 0);
}
keepFetchingPosts() {
this.fetchPosts();
this.postFetcher = setInterval(() => this.fetchPosts(), postRefetchSeconds);
}
fetchPosts() {
let getPostsForm: GetPostsForm = {
page: this.state.page,
limit: fetchLimit,
sort: SortType[this.state.sort],
type_: ListingType[this.state.type_],
};
WebSocketService.Instance.getPosts(getPostsForm);
}
parseMessage(msg: any) {
console.log(msg);
let op: UserOperation = msgOp(msg);
if (msg.error) {
alert(i18n.t(msg.error));
return;
} else if (op == UserOperation.GetFollowedCommunities) {
let res: GetFollowedCommunitiesResponse = msg;
this.state.subscribedCommunities = res.communities;
this.setState(this.state);
} else if (op == UserOperation.ListCommunities) {
let res: ListCommunitiesResponse = msg;
this.state.trendingCommunities = res.communities;
this.setState(this.state);
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} else if (op == UserOperation.GetSite) {
let res: GetSiteResponse = msg;
// This means it hasn't been set up yet
if (!res.site) {
this.context.router.history.push('/setup');
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}
this.state.site.admins = res.admins;
this.state.site.site = res.site;
this.state.site.banned = res.banned;
this.state.site.online = res.online;
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this.setState(this.state);
document.title = `${WebSocketService.Instance.site.name}`;
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} else if (op == UserOperation.EditSite) {
let res: SiteResponse = msg;
this.state.site.site = res.site;
this.state.showEditSite = false;
this.setState(this.state);
} else if (op == UserOperation.GetPosts) {
let res: GetPostsResponse = msg;
this.state.posts = res.posts;
this.state.loading = false;
this.setState(this.state);
} else if (op == UserOperation.CreatePostLike) {
let res: CreatePostLikeResponse = msg;
let found = this.state.posts.find(c => c.id == res.post.id);
found.my_vote = res.post.my_vote;
found.score = res.post.score;
found.upvotes = res.post.upvotes;
found.downvotes = res.post.downvotes;
this.setState(this.state);
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}
}
}