"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = shadow;
var _tokens = require("./tokens");
var _reactNative = require("react-native");
const SHADOW_COLOR = _tokens.colors.black;
const SHADOW_OPACITY = 0.24;
function shadow() {
  let elevation = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
  if (elevation instanceof _reactNative.Animated.Value) {
    const inputRange = [0, 1, 2, 3, 8, 24];
    return {
      shadowColor: SHADOW_COLOR,
      shadowOffset: {
        width: new _reactNative.Animated.Value(0),
        height: elevation.interpolate({
          inputRange,
          outputRange: [0, 0.5, 0.75, 2, 7, 23]
        })
      },
      shadowOpacity: elevation.interpolate({
        inputRange: [0, 1],
        outputRange: [0, SHADOW_OPACITY],
        extrapolate: 'clamp'
      }),
      shadowRadius: elevation.interpolate({
        inputRange,
        outputRange: [0, 0.75, 1.5, 3, 8, 24]
      })
    };
  } else {
    if (elevation === 0) {
      return {};
    }
    let height, radius;
    switch (elevation) {
      case 1:
        height = 0.5;
        radius = 0.75;
        break;
      case 2:
        height = 0.75;
        radius = 1.5;
        break;
      default:
        height = elevation - 1;
        radius = elevation;
    }
    return {
      shadowColor: SHADOW_COLOR,
      shadowOffset: {
        width: 0,
        height
      },
      shadowOpacity: SHADOW_OPACITY,
      shadowRadius: radius
    };
  }
}
//# sourceMappingURL=shadow.js.map