function captureAction()

in src/windows/CameraProxy.js [470:531]
59 lines of code
2 McCabe index (conditional complexity)

    function captureAction () {
        var encodingProperties;
        var fileName;
        var tempFolder = getAppData().temporaryFolder;

        if (encodingType === Camera.EncodingType.PNG) {
            fileName = 'photo.png';
            encodingProperties = Windows.Media.MediaProperties.ImageEncodingProperties.createPng();
        } else {
            fileName = 'photo.jpg';
            encodingProperties = Windows.Media.MediaProperties.ImageEncodingProperties.createJpeg();
        }

        tempFolder.createFileAsync(fileName, OptUnique)
            .then(function (tempCapturedFile) {
                return new WinJS.Promise(function (complete) {
                    var photoStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
                    var finalStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
                    capture.capturePhotoToStreamAsync(encodingProperties, photoStream)
                        .then(function () {
                            return Windows.Graphics.Imaging.BitmapDecoder.createAsync(photoStream);
                        })
                        .then(function (dec) {
                            finalStream.size = 0; // BitmapEncoder requires the output stream to be empty
                            return Windows.Graphics.Imaging.BitmapEncoder.createForTranscodingAsync(finalStream, dec);
                        })
                        .then(function (enc) {
                            // We need to rotate the photo wrt sensor orientation
                            enc.bitmapTransform.rotation = orientationToRotation(sensor.getCurrentOrientation());
                            return enc.flushAsync();
                        })
                        .then(function () {
                            return tempCapturedFile.openAsync(Windows.Storage.FileAccessMode.readWrite);
                        })
                        .then(function (fileStream) {
                            return Windows.Storage.Streams.RandomAccessStream.copyAndCloseAsync(finalStream, fileStream);
                        })
                        .done(function () {
                            photoStream.close();
                            finalStream.close();
                            complete(tempCapturedFile);
                        }, function () {
                            photoStream.close();
                            finalStream.close();
                            throw new Error('An error has occured while capturing the photo.');
                        });
                });
            })
            .done(function (capturedFile) {
                destroyCameraPreview();
                savePhoto(capturedFile, {
                    destinationType: destinationType,
                    targetHeight: targetHeight,
                    targetWidth: targetWidth,
                    encodingType: encodingType,
                    saveToPhotoAlbum: saveToPhotoAlbum
                }, successCallback, errorCallback);
            }, function (err) {
                destroyCameraPreview();
                errorCallback(err);
            });
    }