website-scraper/node-website-scraper

import CssText from './../path-containers/css-text.js';
import { getCharsetFromCss, updateResourceEncoding } from '../../utils/index.js';

class CssResourceHandler {
    constructor (options, methods) {
        this.options = options;
        this.downloadChildrenPaths = methods.downloadChildrenPaths;
        this.updateMissingSources = this.options.updateMissingSources === true || Array.isArray(this.options.updateMissingSources);
    }

    async handle (resource) {
        prepareToLoad(resource);

        const pathContainer = new CssText(resource.getText());

        const updatedText = await this.downloadChildrenPaths(pathContainer, resource, this.updateMissingSources);
        resource.setText(updatedText);
        return resource;
    }
}

function prepareToLoad (resource) {
    const charset = getCharsetFromCss(resource.getText());
    if (charset && charset === 'utf-8') { // do we need to support more charsets here?
        updateResourceEncoding(resource, 'utf8');
    }
}

export default CssResourceHandler;