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import React from 'react';
import CodeBlock from './CodeBlock';
import Text from './Text';
import { ParserPropTypes } from './types';
const denotesCodeBlock = (line: string): boolean => {
return line.match(/^\s*```.*$/) !== null;
};
const denotesDottedList = (line: string): boolean => {
return line.match(/^ ?[-*] .*$/) !== null;
};
const denotesOpenHtml = (line: string): string => {
const regex = /<([^/\s]*)[^<]*[^/]>/g;
const match = regex.exec(line);
return match ? match[1] : '';
};
const denotesClosingHtml = (line: string, tag: string): boolean => {
const regex = new RegExp(`</${tag}[^<]*>`);
return line.match(regex) !== null;
};
const denotesSelfClosingHtml = (line: string): string[] | null => {
const regex = /(<[^/\s]*[^<]*\/>)/g;
return line.match(regex);
};
const declaresNoLineBreak = (line: string): boolean => {
return line.match(/\\\|$/) !== null;
};
const Content: React.FC<ParserPropTypes> = ({ rawLines }) => {
if (!rawLines.length) return null;
const line = rawLines.splice(0, 1)[0];
let buffer;
if (denotesCodeBlock(line)) {
const closeIndex = rawLines.findIndex(rawLine => denotesCodeBlock(rawLine));
const codeBlockLines = rawLines.splice(0, closeIndex + 1).slice(0, closeIndex);
buffer = <CodeBlock rawLines={codeBlockLines} />;
} else if (denotesDottedList(line)) {
const closeIndex = rawLines.findIndex(rawLine => !denotesDottedList(rawLine));
const dottedListLines = rawLines.splice(0, closeIndex).slice(0, closeIndex);
dottedListLines.unshift(line);
buffer = <ul>{dottedListLines.map(li => <li><Text line={li.slice(2)} /></li>)}</ul>;
} else if ((buffer = denotesOpenHtml(line))) {
const tag = buffer;
const closeIndex = denotesClosingHtml(line, tag) ? -1 : rawLines.findIndex(
rawLine => denotesClosingHtml(rawLine, tag),
);
const htmlLines = rawLines.splice(0, closeIndex + 1);
htmlLines.unshift(line);
buffer = <div dangerouslySetInnerHTML={{ __html: htmlLines.join('\n') }} />;
} else if ((buffer = denotesSelfClosingHtml(line)) !== null) {
const match = buffer[0];
const [before, after] = line.split(match);
buffer = (
<>
<Text line={before} />
<div dangerouslySetInnerHTML={{ __html: match }} />
<Text line={after} />
</>
);
} else if (declaresNoLineBreak(line)) {
const closeIndex = rawLines.findIndex(rawLine => !declaresNoLineBreak(rawLine));
const lineBreakLines = rawLines.splice(0, closeIndex).map(rawLine => rawLine.slice(0, -2));
lineBreakLines.unshift(line.slice(0, -2));
lineBreakLines.push(rawLines.splice(0, 1)[0]);
buffer = <p>{lineBreakLines.map(lineBreakLine => <Text line={lineBreakLine} />)}</p>;
} else if (denotesClosingHtml(line, '')) {
buffer = null;
} else {
buffer = <p><Text line={line} /></p>;
}
return (
<>
{ buffer }
<Content rawLines={rawLines} />
</>
);
};
export default Content;
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