salix/modules/item/back/methods/item-image-queue/download.js

const https = require('https');
const fs = require('fs-extra');
const path = require('path');

module.exports = Self => {
    Self.remoteMethod('download', {
        description: 'Returns last entries',
        accessType: 'WRITE',
        returns: {
            type: ['Object'],
            root: true
        },
        http: {
            path: `/download`,
            verb: 'GET'
        }
    });

    Self.download = async() => {
        const models = Self.app.models;

        try {
            const imageQueue = await Self.find({limit: 25});
            const rootPath = models.Image.getPath();
            const tempPath = path.join(rootPath, 'temp');

            // Create temporary path
            await fs.mkdir(tempPath, {recursive: true});

            for (let image of imageQueue) {
                const fileName = `${image.itemFk}.png`;
                const filePath = path.join(tempPath, fileName);
                const file = fs.createWriteStream(filePath);

                https.get(image.url, async response => {
                    response.pipe(file);
                });

                file.on('finish', async function() {
                    await models.Image.registerImage('catalog', fileName, filePath);
                    await image.destroy();
                });

                file.on('error', err => {
                    fs.unlink(filePath);

                    throw err;
                });
            }

            return imageQueue;
        } catch (e) {
            throw e;
        }
    };
};