angular.module('material.core')
.factory('$mdConstant', MdConstantFactory);

/**
 * Factory function that creates the grab-bag $mdConstant service.
 * @ngInject
 */
function MdConstantFactory($sniffer) {

  var webkit = /webkit/i.test($sniffer.vendorPrefix);
  function vendorProperty(name) {
    return webkit ?  ('webkit' + name.charAt(0).toUpperCase() + name.substring(1)) : name;
  }

  return {
    KEY_CODE: {
      ENTER: 13,
      ESCAPE: 27,
      SPACE: 32,
      PAGE_UP: 33,
      PAGE_DOWN: 34,
      END: 35,
      HOME: 36,
      LEFT_ARROW : 37,
      UP_ARROW : 38,
      RIGHT_ARROW : 39,
      DOWN_ARROW : 40,
      TAB : 9,
      BACKSPACE: 8,
      DELETE: 46
    },
    CSS: {
      /* Constants */
      TRANSITIONEND: 'transitionend' + (webkit ? ' webkitTransitionEnd' : ''),
      ANIMATIONEND: 'animationend' + (webkit ? ' webkitAnimationEnd' : ''),

      TRANSFORM: vendorProperty('transform'),
      TRANSFORM_ORIGIN: vendorProperty('transformOrigin'),
      TRANSITION: vendorProperty('transition'),
      TRANSITION_DURATION: vendorProperty('transitionDuration'),
      ANIMATION_PLAY_STATE: vendorProperty('animationPlayState'),
      ANIMATION_DURATION: vendorProperty('animationDuration'),
      ANIMATION_NAME: vendorProperty('animationName'),
      ANIMATION_TIMING: vendorProperty('animationTimingFunction'),
      ANIMATION_DIRECTION: vendorProperty('animationDirection')
    },
    MEDIA: {
      'sm': '(max-width: 599px)',
      'gt-sm': '(min-width: 600px)',
      'md': '(min-width: 600px) and (max-width: 959px)',
      'gt-md': '(min-width: 960px)',
      'lg': '(min-width: 960px) and (max-width: 1199px)',
      'gt-lg': '(min-width: 1200px)'
    },
    MEDIA_PRIORITY: [
      'gt-lg',
      'lg',
      'gt-md',
      'md',
      'gt-sm',
      'sm'
    ]
  };
}
