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import React, { Component } from "react";
import {
Loader,
Message,
Segment,
Header,
Comment,
Divider,
Breadcrumb
} from "semantic-ui-react";
import { Link } from "@reach/router";
import Post from "./Post";
class Board extends Component {
constructor() {
super();
this.state = {
isLoaded: false,
threadList: [],
error: null,
loadingMore: false
};
this.handleScroll = this.handleScroll.bind(this);
this.threadOffset = 10;
}
componentDidMount() {
fetch(
`https://bienvenidoainternet.org/cgi/api/list?dir=${this.props.dir}&replies=5&limit=10`
)
.then(response => {
return response.json();
})
.then(resource => {
if (resource["state"] === "error") {
this.setState({ error: resource });
}
this.setState({ isLoaded: true, threadList: resource["threads"] });
});
window.scrollTo(0, 0);
window.addEventListener("scroll", this.handleScroll);
}
componentWillUnmount() {
window.removeEventListener("scroll", this.handleScroll);
}
handleScroll() {
const { scrollHeight, scrollTop, clientHeight } = document.documentElement;
if (scrollHeight - scrollTop === clientHeight && !this.state.loadingMore) {
this.setState({ loadingMore: true });
this.fetchMoreThreads();
}
}
fetchMoreThreads() {
fetch(
`https://bienvenidoainternet.org/cgi/api/list?dir=${this.props.dir}&replies=5&limit=10&offset=${this.threadOffset}`
)
.then(response => {
return response.json();
})
.then(resource => {
if (resource.state === "success") {
if (resource.threads.length > 0) {
const moreThreads = this.state.threadList.concat(resource.threads);
this.threadOffset += 10;
this.setState({ threadList: moreThreads, loadingMore: false });
}
}
return;
});
}
componentDidUpdate(prevProps) {
// Uso tipico (no olvides de comparar los props):
if (this.props.dir !== prevProps.dir) {
this.setState({
isLoaded: false,
threadList: [],
error: null
});
this.componentDidMount();
}
}
render() {
const { isLoaded, error, threadList, loadingMore } = this.state;
if (error != null) {
return (
<div>
<Message negative>
<Message.Header>API Status: {error.state}</Message.Header>
<p>{error.message}</p>
</Message>
</div>
);
}
if (!isLoaded) {
return (
<Loader active centered="true">
Cargando ...
</Loader>
);
}
const currentBoard = this.props.boardList.find(board => {
return board.dir === this.props.dir;
});
document.title = currentBoard.name + " - B.a.I";
return (
<React.Fragment>
<Breadcrumb>
<Breadcrumb.Section link as={Link} to="/">
Home
</Breadcrumb.Section>
<Breadcrumb.Divider icon="right chevron" />
<Breadcrumb.Section link>{currentBoard.name}</Breadcrumb.Section>
</Breadcrumb>
{threadList.map(thread => (
<Segment.Group key={"seg_" + thread.timestamp + thread.id}>
<Header as="h3" attached>
<Link to={`/${this.props.dir}/read/${thread.id}`}>
{thread.subject}
</Link>
<Header.Subheader>
{thread.total_replies} respuestas
</Header.Subheader>
</Header>
<Segment attached>
<Comment.Group>
<Post
index={0}
post={thread}
locked={thread.locked}
threadId={thread.id}
currentBoard={currentBoard}
/>
<Divider />
{thread.replies.map((reply, index, replies) => (
<Post
index={thread.total_replies - replies.length + index + 1}
post={reply}
locked={thread.locked}
threadId={thread.id}
key={"reply_" + reply.id}
currentBoard={currentBoard}
/>
))}
</Comment.Group>
</Segment>
</Segment.Group>
))}
{loadingMore ? (
<Loader active inline="centered" style={{ marginTop: "3em" }}>
Cargando más hilos ...
</Loader>
) : null}
</React.Fragment>
);
}
}
export default Board;
|
