function resizeImage()

in src/windows/CameraProxy.js [77:130]
25 lines of code
2 McCabe index (conditional complexity)

function resizeImage (successCallback, errorCallback, file, targetWidth, targetHeight, encodingType) {
    var tempPhotoFileName = '';
    var targetContentType = '';

    if (encodingType === Camera.EncodingType.PNG) {
        tempPhotoFileName = 'camera_cordova_temp_return.png';
        targetContentType = 'image/png';
    } else {
        tempPhotoFileName = 'camera_cordova_temp_return.jpg';
        targetContentType = 'image/jpeg';
    }

    var storageFolder = getAppData().localFolder;
    file.copyAsync(storageFolder, file.name, Windows.Storage.NameCollisionOption.replaceExisting)
        .then(function (storageFile) {
            return fileIO.readBufferAsync(storageFile);
        })
        .then(function (buffer) {
            var strBase64 = encodeToBase64String(buffer);
            var imageData = 'data:' + file.contentType + ';base64,' + strBase64;
            var image = new Image(); /* eslint no-undef : 0 */
            image.src = imageData;
            image.onload = function () {
                var ratio = Math.min(targetWidth / this.width, targetHeight / this.height);
                var imageWidth = ratio * this.width;
                var imageHeight = ratio * this.height;

                var canvas = document.createElement('canvas');
                var storageFileName;

                canvas.width = imageWidth;
                canvas.height = imageHeight;

                canvas.getContext('2d').drawImage(this, 0, 0, imageWidth, imageHeight);

                var fileContent = canvas.toDataURL(targetContentType).split(',')[1];

                var storageFolder = getAppData().localFolder;

                storageFolder.createFileAsync(tempPhotoFileName, OptUnique)
                    .then(function (storagefile) {
                        var content = Windows.Security.Cryptography.CryptographicBuffer.decodeFromBase64String(fileContent);
                        storageFileName = storagefile.name;
                        return fileIO.writeBufferAsync(storagefile, content);
                    })
                    .done(function () {
                        successCallback('ms-appdata:///local/' + storageFileName);
                    }, errorCallback);
            };
        })
        .done(null, function (err) {
            errorCallback(err);
        });
}