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import PropTypes from 'prop-types';
import { Component } from 'react';
import DocumentHead from 'calypso/components/data/document-head';
import highlight from 'calypso/lib/highlight';
import Error from './error';
import DocService from './service';
export default class extends Component {
static displayName = 'SingleDocument';
static propTypes = {
path: PropTypes.string.isRequired,
term: PropTypes.string,
sectionId: PropTypes.string,
};
state = {
body: '',
error: null,
};
timeoutID = null;
componentDidMount() {
this.fetch();
}
componentDidUpdate( prevProps ) {
if ( this.props.path !== prevProps.path ) {
this.fetch();
}
if ( this.state.body ) {
this.setBodyScrollPosition();
}
}
componentWillUnmount() {
this.clearLoadingMessage();
}
fetch = () => {
this.setState( {
body: '',
error: null,
} );
this.delayLoadingMessage();
DocService.fetch( this.props.path, ( error, body ) => {
this.setState( { body, error } );
} );
};
setBodyScrollPosition = () => {
if ( this.props.sectionId ) {
const sectionNode = document.getElementById( this.props.sectionId );
if ( sectionNode ) {
sectionNode.scrollIntoView();
}
}
};
delayLoadingMessage = () => {
this.clearLoadingMessage();
this.timeoutID = setTimeout( () => {
if ( ! this.state.body ) {
this.setState( {
body: 'Loading…',
} );
}
}, 1000 );
};
clearLoadingMessage = () => {
if ( 'number' === typeof this.timeoutID ) {
window.clearTimeout( this.timeoutID );
this.timeoutID = null;
}
};
renderBody() {
const editURL = encodeURI(
'https://github.com/Automattic/wp-calypso/edit/trunk/' + this.props.path
);
const { body, error } = this.state;
if ( ! body || error ) {
return null;
}
return (
<div className="devdocs__body">
<a
className="devdocs__doc-edit-link"
href={ editURL }
target="_blank"
rel="noopener noreferrer"
>
Improve this document on GitHub
</a>
<div
className="devdocs__doc-content"
// eslint-disable-next-line react/no-danger
dangerouslySetInnerHTML={ { __html: highlight( this.props.term, body ) } }
/>
</div>
);
}
render() {
const { body, error } = this.state;
const titleMatches = body && body.length && body.match( /<h1[^>]+>(.+)<\/h1>/ );
const title = titleMatches && titleMatches[ 1 ];
return (
<div className="devdocs devdocs__doc">
{ title ? <DocumentHead title={ title } /> : null }
{ this.renderBody() }
{ error && <Error /> }
</div>
);
}
}
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