var utils = require('../common/utils.wxs');

function animate(options) {
  if (options.duration) {
    return utils._style({
      'transition-duration': options.duration + 's',
      transform: 'translate3d( ' + -100 * options.currentIndex + '%,0, 0)',
    });
  }
  return '';
}

function trackStyle(options) {
  if (options.distance || options.lineWidth) {
    return utils._style({
      '-webkit-transform': 'translateX(' + options.distance + 'px)',
      transform: 'translateX(' + options.distance + 'px)',
      'transition-duration': options.isInit ? '0' : '0.3s',
      width: options.lineWidth + 'px',
      opacity: 1,
    });
  }

  return '';
}

module.exports = {
  animate: animate,
  trackStyle: trackStyle,
};