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// @flow
import React from 'react';
import { Link } from 'react-router-dom';
import Highlight, { defaultProps } from 'prism-react-renderer';
import { Line, Paragraph, BlockQuote } from 'src/components/message/style';
import {
AspectRatio,
EmbedContainer,
EmbedComponent,
} from 'src/components/rich-text-editor/style';
import ThreadAttachment from 'src/components/message/threadAttachment';
import { getStringElements } from '../utils/getStringElements';
import { hasStringElements } from '../utils/hasStringElements';
import mentionsDecorator from '../mentions-decorator';
import linksDecorator from '../links-decorator';
import type { Node } from 'react';
import { SPECTRUM_URLS } from 'shared/regexps';
import type { KeyObj, KeysObj, DataObj } from '../message/types';
import type {
EmbedData,
ExternalEmbedData,
InternalEmbedData,
} from '../../../draft-utils/add-embeds-to-draft-js';
const ExternalEmbed = (props: { ...ExternalEmbedData, src?: string }) => {
let { aspectRatio, url, src, width = '100%', height = 200 } = props;
if (!src && url) src = url;
if (typeof src !== 'string') return null;
// if an aspect ratio is passed in, we need to use the EmbedComponent which does some trickery with padding to force an aspect ratio. Otherwise we should just use a regular iFrame
if (aspectRatio && aspectRatio !== undefined) {
return (
<AspectRatio style={{ height }} ratio={aspectRatio}>
<EmbedComponent
title={`iframe-${src}`}
width={width}
height={height}
allowFullScreen={true}
frameBorder="0"
src={src}
/>
</AspectRatio>
);
} else {
return (
<EmbedContainer style={{ height }}>
<iframe
title={`iframe-${src}`}
width={width}
height={height}
allowFullScreen={true}
frameBorder="0"
src={src}
/>
</EmbedContainer>
);
}
};
const InternalEmbed = (props: InternalEmbedData) => {
if (props.entity !== 'thread') return null;
return <ThreadAttachment id={props.id} />;
};
const Embed = (props: EmbedData) => {
if (props.type === 'internal') {
return <InternalEmbed {...props} />;
}
return <ExternalEmbed {...props} />;
};
const EMPTY_THEME = {
plain: {},
styles: [],
};
type Options = {
headings: boolean,
};
export const createRenderer = (options: Options) => {
return {
inline: {
BOLD: (children: Array<Node>, { key }: KeyObj) => (
<span style={{ fontWeight: 700 }} key={key}>
{children}
</span>
),
ITALIC: (children: Array<Node>, { key }: KeyObj) => (
<em key={key}>{children}</em>
),
CODE: (children: Array<Node>, { key }: KeyObj) => (
<code key={key}>{children}</code>
),
},
blocks: {
unstyled: (children: Array<Node>, { keys }: KeysObj) => {
// If the children are text, render a paragraph
if (hasStringElements(children)) {
return children.map((child, index) => (
<Paragraph key={keys[index]}>{child}</Paragraph>
));
}
return children;
},
'code-block': (children: Array<any>, { keys, data }: KeysObj) => {
return children.map((child, index) => (
<Highlight
{...defaultProps}
code={getStringElements(child).join('\n')}
language={Array.isArray(data) && data[0].language}
theme={EMPTY_THEME}
key={keys[index]}
>
{({ className, style, tokens, getLineProps, getTokenProps }) => (
<Line className={className} style={style}>
{tokens.map((line, i) => (
<div key={i} {...getLineProps({ line, key: i })}>
{line.map((token, key) => (
<span key={key} {...getTokenProps({ token, key })} />
))}
</div>
))}
</Line>
)}
</Highlight>
));
},
blockquote: (children: Array<Node>, { keys }: KeysObj) =>
children.map((child, index) => (
<BlockQuote key={keys[index] || index}>{child}</BlockQuote>
)),
...(!options.headings
? {}
: {
'header-one': (children: Array<Node>, { keys }: KeysObj) =>
children.map((child, index) => (
<h1 key={keys[index]}>{child}</h1>
)),
'header-two': (children: Array<Node>, { keys }: KeysObj) =>
children.map((child, index) => (
<h2 key={keys[index]}>{child}</h2>
)),
'header-three': (children: Array<Node>, { keys }: KeysObj) =>
children.map((child, index) => (
<h3 key={keys[index]}>{child}</h3>
)),
}),
'unordered-list-item': (children: Array<Node>, { keys }: KeysObj) => (
<ul key={keys.join('|')}>
{children.map((child, index) => (
<li key={keys[index]}>{child}</li>
))}
</ul>
),
'ordered-list-item': (children: Array<Node>, { keys }: KeysObj) => (
<ol key={keys.join('|')}>
{children.map((child, index) => (
<li key={keys[index]}>{child}</li>
))}
</ol>
),
},
entities: {
LINK: (children: Array<Node>, data: DataObj, { key }: KeyObj) => {
const link = data.url || data.href;
if (link) {
const regexp = new RegExp(SPECTRUM_URLS, 'ig');
const match = regexp.exec(link);
if (match && match[0] && match[1]) {
return <Link to={match[1]}>{children}</Link>;
}
}
return (
<a key={key} href={link} target="_blank" rel="noopener noreferrer">
{children}
</a>
);
},
IMAGE: (
children: Array<Node>,
data: { src?: string, alt?: string },
{ key }: KeyObj
) => <img key={key} src={data.src} alt={data.alt || 'Image'} />,
embed: (children: Array<Node>, data: Object, { key }: KeyObj) => (
<Embed key={key} {...data} />
),
},
decorators: [mentionsDecorator, linksDecorator],
};
};
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