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import { Component, linkEvent } from 'inferno';
import { Helmet } from 'inferno-helmet';
import { Subscription } from 'rxjs';
import { retryWhen, delay, take } from 'rxjs/operators';
import {
UserOperation,
Community as CommunityI,
GetCommunityResponse,
CommunityResponse,
CommunityUser,
UserView,
SortType,
Post,
GetPostsForm,
GetCommunityForm,
ListingType,
DataType,
GetPostsResponse,
PostResponse,
AddModToCommunityResponse,
BanFromCommunityResponse,
Comment,
GetCommentsForm,
GetCommentsResponse,
CommentResponse,
WebSocketJsonResponse,
GetSiteResponse,
Site,
} from '../interfaces';
import { WebSocketService } from '../services';
import { PostListings } from './post-listings';
import { CommentNodes } from './comment-nodes';
import { SortSelect } from './sort-select';
import { DataTypeSelect } from './data-type-select';
import { Sidebar } from './sidebar';
import {
wsJsonToRes,
fetchLimit,
toast,
getPageFromProps,
getSortTypeFromProps,
getDataTypeFromProps,
editCommentRes,
saveCommentRes,
createCommentLikeRes,
createPostLikeFindRes,
editPostFindRes,
commentsToFlatNodes,
setupTippy,
} from '../utils';
import { i18n } from '../i18next';
interface State {
community: CommunityI;
communityId: number;
communityName: string;
moderators: Array<CommunityUser>;
admins: Array<UserView>;
online: number;
loading: boolean;
posts: Array<Post>;
comments: Array<Comment>;
dataType: DataType;
sort: SortType;
page: number;
site: Site;
}
interface CommunityProps {
dataType: DataType;
sort: SortType;
page: number;
}
interface UrlParams {
dataType?: string;
sort?: string;
page?: number;
}
export class Community extends Component<any, State> {
private subscription: Subscription;
private emptyState: State = {
community: {
id: null,
name: null,
title: null,
category_id: null,
category_name: null,
creator_id: null,
creator_name: null,
number_of_subscribers: null,
number_of_posts: null,
number_of_comments: null,
published: null,
removed: null,
nsfw: false,
deleted: null,
local: null,
actor_id: null,
last_refreshed_at: null,
creator_actor_id: null,
creator_local: null,
},
moderators: [],
admins: [],
communityId: Number(this.props.match.params.id),
communityName: this.props.match.params.name,
online: null,
loading: true,
posts: [],
comments: [],
dataType: getDataTypeFromProps(this.props),
sort: getSortTypeFromProps(this.props),
page: getPageFromProps(this.props),
site: {
id: undefined,
name: undefined,
creator_id: undefined,
published: undefined,
creator_name: undefined,
number_of_users: undefined,
number_of_posts: undefined,
number_of_comments: undefined,
number_of_communities: undefined,
enable_downvotes: undefined,
open_registration: undefined,
enable_nsfw: undefined,
},
};
constructor(props: any, context: any) {
super(props, context);
this.state = this.emptyState;
this.handleSortChange = this.handleSortChange.bind(this);
this.handleDataTypeChange = this.handleDataTypeChange.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')
);
let form: GetCommunityForm = {
id: this.state.communityId ? this.state.communityId : null,
name: this.state.communityName ? this.state.communityName : null,
};
WebSocketService.Instance.getCommunity(form);
WebSocketService.Instance.getSite();
}
componentWillUnmount() {
this.subscription.unsubscribe();
}
static getDerivedStateFromProps(props: any): CommunityProps {
return {
dataType: getDataTypeFromProps(props),
sort: getSortTypeFromProps(props),
page: getPageFromProps(props),
};
}
componentDidUpdate(_: any, lastState: State) {
if (
lastState.dataType !== this.state.dataType ||
lastState.sort !== this.state.sort ||
lastState.page !== this.state.page
) {
this.setState({ loading: true });
this.fetchData();
}
}
get documentTitle(): string {
if (this.state.community.name) {
return `/c/${this.state.community.name} - ${this.state.site.name}`;
} else {
return 'Lemmy';
}
}
render() {
return (
<div class="container">
<Helmet title={this.documentTitle} />
{this.selects()}
{this.state.loading ? (
<h5>
<svg class="icon icon-spinner spin">
<use xlinkHref="#icon-spinner"></use>
</svg>
</h5>
) : (
<div class="row">
<div class="col-12 col-md-8">
<h5>
{this.state.community.title}
{this.state.community.removed && (
<small className="ml-2 text-muted font-italic">
{i18n.t('removed')}
</small>
)}
{this.state.community.nsfw && (
<small className="ml-2 text-muted font-italic">
{i18n.t('nsfw')}
</small>
)}
</h5>
{this.listings()}
{this.paginator()}
</div>
<div class="col-12 col-md-4">
<Sidebar
community={this.state.community}
moderators={this.state.moderators}
admins={this.state.admins}
online={this.state.online}
enableNsfw={this.state.site.enable_nsfw}
/>
</div>
</div>
)}
</div>
);
}
listings() {
return this.state.dataType == DataType.Post ? (
<PostListings
posts={this.state.posts}
removeDuplicates
sort={this.state.sort}
enableDownvotes={this.state.site.enable_downvotes}
enableNsfw={this.state.site.enable_nsfw}
/>
) : (
<CommentNodes
nodes={commentsToFlatNodes(this.state.comments)}
noIndent
sortType={this.state.sort}
showContext
enableDownvotes={this.state.site.enable_downvotes}
/>
);
}
selects() {
return (
<div class="mb-3">
<span class="mr-3">
<DataTypeSelect
type_={this.state.dataType}
onChange={this.handleDataTypeChange}
/>
</span>
<span class="mr-2">
<SortSelect sort={this.state.sort} onChange={this.handleSortChange} />
</span>
<a
href={`/feeds/c/${this.state.communityName}.xml?sort=${
SortType[this.state.sort]
}`}
target="_blank"
title="RSS"
rel="noopener"
>
<svg class="icon text-muted small">
<use xlinkHref="#icon-rss">#</use>
</svg>
</a>
</div>
);
}
paginator() {
return (
<div class="my-2">
{this.state.page > 1 && (
<button
class="btn btn-secondary mr-1"
onClick={linkEvent(this, this.prevPage)}
>
{i18n.t('prev')}
</button>
)}
{this.state.posts.length > 0 && (
<button
class="btn btn-secondary"
onClick={linkEvent(this, this.nextPage)}
>
{i18n.t('next')}
</button>
)}
</div>
);
}
nextPage(i: Community) {
i.updateUrl({ page: i.state.page + 1 });
window.scrollTo(0, 0);
}
prevPage(i: Community) {
i.updateUrl({ page: i.state.page - 1 });
window.scrollTo(0, 0);
}
handleSortChange(val: SortType) {
this.updateUrl({ sort: SortType[val].toLowerCase(), page: 1 });
window.scrollTo(0, 0);
}
handleDataTypeChange(val: DataType) {
this.updateUrl({ dataType: DataType[val].toLowerCase(), page: 1 });
window.scrollTo(0, 0);
}
updateUrl(paramUpdates: UrlParams) {
const dataTypeStr =
paramUpdates.dataType || DataType[this.state.dataType].toLowerCase();
const sortStr =
paramUpdates.sort || SortType[this.state.sort].toLowerCase();
const page = paramUpdates.page || this.state.page;
this.props.history.push(
`/c/${this.state.community.name}/data_type/${dataTypeStr}/sort/${sortStr}/page/${page}`
);
}
fetchData() {
if (this.state.dataType == DataType.Post) {
let getPostsForm: GetPostsForm = {
page: this.state.page,
limit: fetchLimit,
sort: SortType[this.state.sort],
type_: ListingType[ListingType.Community],
community_id: this.state.community.id,
};
WebSocketService.Instance.getPosts(getPostsForm);
} else {
let getCommentsForm: GetCommentsForm = {
page: this.state.page,
limit: fetchLimit,
sort: SortType[this.state.sort],
type_: ListingType[ListingType.Community],
community_id: this.state.community.id,
};
WebSocketService.Instance.getComments(getCommentsForm);
}
}
parseMessage(msg: WebSocketJsonResponse) {
console.log(msg);
let res = wsJsonToRes(msg);
if (msg.error) {
toast(i18n.t(msg.error), 'danger');
this.context.router.history.push('/');
return;
} else if (msg.reconnect) {
this.fetchData();
} else if (res.op == UserOperation.GetCommunity) {
let data = res.data as GetCommunityResponse;
this.state.community = data.community;
this.state.moderators = data.moderators;
this.state.online = data.online;
this.setState(this.state);
this.fetchData();
} else if (
res.op == UserOperation.EditCommunity ||
res.op == UserOperation.DeleteCommunity ||
res.op == UserOperation.RemoveCommunity
) {
let data = res.data as CommunityResponse;
this.state.community = data.community;
this.setState(this.state);
} else if (res.op == UserOperation.FollowCommunity) {
let data = res.data as CommunityResponse;
this.state.community.subscribed = data.community.subscribed;
this.state.community.number_of_subscribers =
data.community.number_of_subscribers;
this.setState(this.state);
} else if (res.op == UserOperation.GetPosts) {
let data = res.data as GetPostsResponse;
this.state.posts = data.posts;
this.state.loading = false;
this.setState(this.state);
setupTippy();
} else if (
res.op == UserOperation.EditPost ||
res.op == UserOperation.DeletePost ||
res.op == UserOperation.RemovePost ||
res.op == UserOperation.LockPost ||
res.op == UserOperation.StickyPost
) {
let data = res.data as PostResponse;
editPostFindRes(data, this.state.posts);
this.setState(this.state);
} else if (res.op == UserOperation.CreatePost) {
let data = res.data as PostResponse;
this.state.posts.unshift(data.post);
this.setState(this.state);
} else if (res.op == UserOperation.CreatePostLike) {
let data = res.data as PostResponse;
createPostLikeFindRes(data, this.state.posts);
this.setState(this.state);
} else if (res.op == UserOperation.AddModToCommunity) {
let data = res.data as AddModToCommunityResponse;
this.state.moderators = data.moderators;
this.setState(this.state);
} else if (res.op == UserOperation.BanFromCommunity) {
let data = res.data as BanFromCommunityResponse;
this.state.posts
.filter(p => p.creator_id == data.user.id)
.forEach(p => (p.banned = data.banned));
this.setState(this.state);
} else if (res.op == UserOperation.GetComments) {
let data = res.data as GetCommentsResponse;
this.state.comments = data.comments;
this.state.loading = false;
this.setState(this.state);
} else if (
res.op == UserOperation.EditComment ||
res.op == UserOperation.DeleteComment ||
res.op == UserOperation.RemoveComment
) {
let data = res.data as CommentResponse;
editCommentRes(data, this.state.comments);
this.setState(this.state);
} else if (res.op == UserOperation.CreateComment) {
let data = res.data as CommentResponse;
// Necessary since it might be a user reply
if (data.recipient_ids.length == 0) {
this.state.comments.unshift(data.comment);
this.setState(this.state);
}
} else if (res.op == UserOperation.SaveComment) {
let data = res.data as CommentResponse;
saveCommentRes(data, this.state.comments);
this.setState(this.state);
} else if (res.op == UserOperation.CreateCommentLike) {
let data = res.data as CommentResponse;
createCommentLikeRes(data, this.state.comments);
this.setState(this.state);
} else if (res.op == UserOperation.GetSite) {
let data = res.data as GetSiteResponse;
this.state.site = data.site;
this.state.admins = data.admins;
this.setState(this.state);
}
}
}