var gphoto2 = require('gphoto2');
var GPhoto = new gphoto2.GPhoto2();
var fs = require('fs');

// List cameras / assign list item to variable to use below options
GPhoto.list(function (list) {
  if (list.length === 0) return;
  var camera = list[0];
  console.log('Found', camera.model);

  // get configuration tree
  camera.getConfig(function (er, settings) {
    console.log(settings);
  });

  // Set configuration values
  camera.setConfigValue('capturetarget', 1, function (er) {
    //...
  });

  // Take picture with camera object obtained from list()
  camera.takePicture({download: true}, function (er, data) {
    fs.writeFileSync(__dirname + '/picture.jpg', data);
  });

  // Take picture without downloading immediately
  camera.takePicture({download: false}, function (er, path) {
    console.log(path);
  });

  // Take picture and download it to filesystem
  camera.takePicture({
    targetPath: '/tmp/foo.XXXXXX'
  }, function (er, tmpname) {
    fs.renameSync(tmpname, __dirname + '/picture.jpg');
  });

  // Download a picture from camera
  camera.downloadPicture({
    cameraPath: '/store_00020001/DCIM/100CANON/IMG_1231.JPG',
    targetPath: '/tmp/foo.XXXXXX'
  }, function (er, tmpname) {
    fs.renameSync(tmpname, __dirname + '/picture.jpg');
  });

  // Get preview picture (from AF Sensor, fails silently if unsupported)
  camera.takePicture({
    preview: true,
    targetPath: '/tmp/foo.XXXXXX'
  }, function (er, tmpname) {
    fs.renameSync(tmpname, __dirname + '/picture.jpg');
  });
});