import React, { Component } from 'react';

function _classCallCheck(instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
}

function _defineProperties(target, props) {
  for (var i = 0; i < props.length; i++) {
    var descriptor = props[i];
    descriptor.enumerable = descriptor.enumerable || false;
    descriptor.configurable = true;
    if ("value" in descriptor) descriptor.writable = true;
    Object.defineProperty(target, descriptor.key, descriptor);
  }
}

function _createClass(Constructor, protoProps, staticProps) {
  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
  if (staticProps) _defineProperties(Constructor, staticProps);
  Object.defineProperty(Constructor, "prototype", {
    writable: false
  });
  return Constructor;
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}

function _inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function");
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      writable: true,
      configurable: true
    }
  });
  Object.defineProperty(subClass, "prototype", {
    writable: false
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _typeof(obj) {
  "@babel/helpers - typeof";

  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
    return typeof obj;
  } : function (obj) {
    return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
  }, _typeof(obj);
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

function _possibleConstructorReturn(self, call) {
  if (call && (_typeof(call) === "object" || typeof call === "function")) {
    return call;
  } else if (call !== void 0) {
    throw new TypeError("Derived constructors may only return object or undefined");
  }

  return _assertThisInitialized(self);
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
var GMap = /*#__PURE__*/function (_Component) {
  _inherits(GMap, _Component);

  var _super = _createSuper(GMap);

  function GMap() {
    _classCallCheck(this, GMap);

    return _super.apply(this, arguments);
  }

  _createClass(GMap, [{
    key: "initMap",
    value: function initMap() {
      this.map = new google.maps.Map(this.container, this.props.options);

      if (this.props.onMapReady) {
        this.props.onMapReady({
          map: this.map
        });
      }

      this.initOverlays(this.props.overlays);
      this.bindMapEvent('click', this.props.onMapClick);
      this.bindMapEvent('dragend', this.props.onMapDragEnd);
      this.bindMapEvent('zoom_changed', this.props.onZoomChanged);
    }
  }, {
    key: "initOverlays",
    value: function initOverlays(overlays) {
      if (overlays) {
        var _iterator = _createForOfIteratorHelper(overlays),
            _step;

        try {
          for (_iterator.s(); !(_step = _iterator.n()).done;) {
            var overlay = _step.value;
            overlay.setMap(this.map);
            this.bindOverlayEvents(overlay);
          }
        } catch (err) {
          _iterator.e(err);
        } finally {
          _iterator.f();
        }
      }
    }
  }, {
    key: "bindOverlayEvents",
    value: function bindOverlayEvents(overlay) {
      var _this = this;

      overlay.addListener('click', function (event) {
        if (_this.props.onOverlayClick) {
          _this.props.onOverlayClick({
            originalEvent: event,
            overlay: overlay,
            map: _this.map
          });
        }
      });

      if (overlay.getDraggable()) {
        this.bindDragEvents(overlay);
      }
    }
  }, {
    key: "bindDragEvents",
    value: function bindDragEvents(overlay) {
      this.bindDragEvent(overlay, 'dragstart', this.props.onOverlayDragStart);
      this.bindDragEvent(overlay, 'drag', this.props.onOverlayDrag);
      this.bindDragEvent(overlay, 'dragend', this.props.onOverlayDragEnd);
    }
  }, {
    key: "bindMapEvent",
    value: function bindMapEvent(eventName, callback) {
      this.map.addListener(eventName, function (event) {
        if (callback) {
          callback(event);
        }
      });
    }
  }, {
    key: "bindDragEvent",
    value: function bindDragEvent(overlay, eventName, callback) {
      var _this2 = this;

      overlay.addListener(eventName, function (event) {
        if (callback) {
          callback({
            originalEvent: event,
            overlay: overlay,
            map: _this2.map
          });
        }
      });
    }
  }, {
    key: "getMap",
    value: function getMap() {
      return this.map;
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate(prevProps, prevState, snapshot) {
      if (prevProps.overlays !== this.props.overlays) {
        if (prevProps.overlays) {
          var _iterator2 = _createForOfIteratorHelper(prevProps.overlays),
              _step2;

          try {
            for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
              var overlay = _step2.value;
              google.maps.event.clearInstanceListeners(overlay);
              overlay.setMap(null);
            }
          } catch (err) {
            _iterator2.e(err);
          } finally {
            _iterator2.f();
          }
        }

        this.initOverlays(this.props.overlays);
      }
    }
  }, {
    key: "componentDidMount",
    value: function componentDidMount() {
      this.initMap();
    }
  }, {
    key: "render",
    value: function render() {
      var _this3 = this;

      return /*#__PURE__*/React.createElement("div", {
        ref: function ref(el) {
          return _this3.container = el;
        },
        style: this.props.style,
        className: this.props.className
      });
    }
  }]);

  return GMap;
}(Component);

_defineProperty(GMap, "defaultProps", {
  options: null,
  overlays: null,
  style: null,
  className: null,
  onMapReady: null,
  onMapClick: null,
  onMapDragEnd: null,
  onZoomChanged: null,
  onOverlayDragStart: null,
  onOverlayDrag: null,
  onOverlayDragEnd: null,
  onOverlayClick: null
});

export { GMap };