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import { CodeBlockLowlight } from '@tiptap/extension-code-block-lowlight';
import { textblockTypeInputRule } from '@tiptap/core';
import { isFunction } from 'lodash';
const extractLanguage = (element) => element.getAttribute('lang');
const backtickInputRegex = /^```([a-z]+)?[\s\n]$/;
const tildeInputRegex = /^~~~([a-z]+)?[\s\n]$/;
const loadLanguageFromInputRule = (languageLoader) => (match) => {
const language = match[1];
if (isFunction(languageLoader?.loadLanguages)) {
languageLoader.loadLanguages([language]);
}
return {
language,
};
};
export default CodeBlockLowlight.extend({
isolating: true,
addOptions() {
return {
...this.parent?.(),
languageLoader: {},
};
},
addAttributes() {
return {
language: {
default: null,
parseHTML: (element) => extractLanguage(element),
},
class: {
// eslint-disable-next-line @gitlab/require-i18n-strings
default: 'code highlight',
},
};
},
addInputRules() {
const { languageLoader } = this.options;
return [
textblockTypeInputRule({
find: backtickInputRegex,
type: this.type,
getAttributes: loadLanguageFromInputRule(languageLoader),
}),
textblockTypeInputRule({
find: tildeInputRegex,
type: this.type,
getAttributes: loadLanguageFromInputRule(languageLoader),
}),
];
},
renderHTML({ HTMLAttributes }) {
return [
'pre',
{
...HTMLAttributes,
class: `content-editor-code-block ${HTMLAttributes.class}`,
},
['code', {}, 0],
];
},
});
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