pwabuilder-lib/lib/iconTools.js

PWA Builder Core Library

'use strict';

var path = require('path');

var Q = require('q');

var fileTools = require('./fileTools'),
		download = require('./download'),
		log = require('./log');

function getIcon(iconUrl, iconFilePath, callback) {

	var iconFolder = path.dirname(iconFilePath);

	log.debug('Downloading icon file from \'' + iconUrl + '\' to \'' + iconFilePath + '\'...');
  
	return fileTools.mkdirp(iconFolder).then(function () {
    return download(iconUrl, iconFilePath).then(function (response) {
      if (response.statusCode === 200 && !response.contentType.match(/image/)) {
        return Q.reject(new Error('Downloaded file  \'' + iconUrl + '\' does not appear to be an image. The content type of the response was \'' + response.contentType + '\'.'));
      }
      
      return iconFilePath;
    });
  })
  .nodeify(callback);
}

function copyDefaultIcon(manifest, platformId, iconSize, source, targetPath, callback) {
	
	if (manifest.icons && manifest.icons[iconSize]) {
		return Q.resolve().nodeify(callback);
	}

	log.info('Copying the default icon for the \'' + platformId + '\' platform...');

	var iconFilename = path.basename(source);
	var target = path.join(targetPath, iconFilename);

	return fileTools.copyFile(source, target).then(function () {
    manifest.icons = manifest.icons || {};
    manifest.icons[iconSize] = iconFilename;
    return Q.resolve(targetPath);
  })
  .nodeify(callback);
}

module.exports = {
	getIcon: getIcon,
	copyDefaultIcon: copyDefaultIcon
};