import React, { Component } from 'react';
import { classNames, ObjectUtils, UniqueComponentId } from 'primereact/utils';
import { CSSTransition } from 'primereact/csstransition';

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 _arrayWithoutHoles(arr) {
  if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}

function _iterableToArray(iter) {
  if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}

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 _nonIterableSpread() {
  throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

function _toConsumableArray(arr) {
  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}

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 _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 PanelMenuSub = /*#__PURE__*/function (_Component) {
  _inherits(PanelMenuSub, _Component);

  var _super = _createSuper(PanelMenuSub);

  function PanelMenuSub(props) {
    var _this;

    _classCallCheck(this, PanelMenuSub);

    _this = _super.call(this, props);
    _this.state = {
      activeItem: _this.findActiveItem()
    };
    return _this;
  }

  _createClass(PanelMenuSub, [{
    key: "onItemClick",
    value: function onItemClick(event, item) {
      if (item.disabled) {
        event.preventDefault();
        return;
      }

      if (!item.url) {
        event.preventDefault();
      }

      if (item.command) {
        item.command({
          originalEvent: event,
          item: item
        });
      }

      var activeItem = this.state.activeItem;
      var active = this.isItemActive(item);

      if (active) {
        item.expanded = false;
        this.setState({
          activeItem: this.props.multiple ? activeItem.filter(function (a_item) {
            return a_item !== item;
          }) : null
        });
      } else {
        if (!this.props.multiple && activeItem) {
          activeItem.expanded = false;
        }

        item.expanded = true;
        this.setState({
          activeItem: this.props.multiple ? [].concat(_toConsumableArray(activeItem || []), [item]) : item
        });
      }
    }
  }, {
    key: "findActiveItem",
    value: function findActiveItem() {
      if (this.props.model) {
        if (this.props.multiple) {
          return this.props.model.filter(function (item) {
            return item.expanded;
          });
        } else {
          var activeItem = null;
          this.props.model.forEach(function (item) {
            if (item.expanded) {
              if (!activeItem) activeItem = item;else item.expanded = false;
            }
          });
          return activeItem;
        }
      }

      return null;
    }
  }, {
    key: "isItemActive",
    value: function isItemActive(item) {
      return this.state.activeItem && (this.props.multiple ? this.state.activeItem.indexOf(item) > -1 : this.state.activeItem === item);
    }
  }, {
    key: "renderSeparator",
    value: function renderSeparator(index) {
      return /*#__PURE__*/React.createElement("li", {
        key: 'separator_' + index,
        className: "p-menu-separator"
      });
    }
  }, {
    key: "renderSubmenu",
    value: function renderSubmenu(item, active) {
      var submenuWrapperClassName = classNames('p-toggleable-content', {
        'p-toggleable-content-collapsed': !active
      });
      var submenuContentRef = /*#__PURE__*/React.createRef();

      if (item.items) {
        return /*#__PURE__*/React.createElement(CSSTransition, {
          nodeRef: submenuContentRef,
          classNames: "p-toggleable-content",
          timeout: {
            enter: 1000,
            exit: 450
          },
          "in": active,
          unmountOnExit: true
        }, /*#__PURE__*/React.createElement("div", {
          ref: submenuContentRef,
          className: submenuWrapperClassName
        }, /*#__PURE__*/React.createElement(PanelMenuSub, {
          model: item.items,
          multiple: this.props.multiple
        })));
      }

      return null;
    }
  }, {
    key: "renderMenuitem",
    value: function renderMenuitem(item, index) {
      var _this2 = this;

      var active = this.isItemActive(item);
      var className = classNames('p-menuitem', item.className);
      var linkClassName = classNames('p-menuitem-link', {
        'p-disabled': item.disabled
      });
      var iconClassName = classNames('p-menuitem-icon', item.icon);
      var submenuIconClassName = classNames('p-panelmenu-icon pi pi-fw', {
        'pi-angle-right': !active,
        'pi-angle-down': active
      });
      var icon = item.icon && /*#__PURE__*/React.createElement("span", {
        className: iconClassName
      });
      var label = item.label && /*#__PURE__*/React.createElement("span", {
        className: "p-menuitem-text"
      }, item.label);
      var submenuIcon = item.items && /*#__PURE__*/React.createElement("span", {
        className: submenuIconClassName
      });
      var submenu = this.renderSubmenu(item, active);
      var content = /*#__PURE__*/React.createElement("a", {
        href: item.url || '#',
        className: linkClassName,
        target: item.target,
        onClick: function onClick(event) {
          return _this2.onItemClick(event, item, index);
        },
        role: "menuitem",
        "aria-disabled": item.disabled
      }, submenuIcon, icon, label);

      if (item.template) {
        var defaultContentOptions = {
          onClick: function onClick(event) {
            return _this2.onItemClick(event, item, index);
          },
          className: linkClassName,
          labelClassName: 'p-menuitem-text',
          iconClassName: iconClassName,
          submenuIconClassName: submenuIconClassName,
          element: content,
          props: this.props,
          leaf: !item.items,
          active: active
        };
        content = ObjectUtils.getJSXElement(item.template, item, defaultContentOptions);
      }

      return /*#__PURE__*/React.createElement("li", {
        key: item.label + '_' + index,
        className: className,
        style: item.style,
        role: "none"
      }, content, submenu);
    }
  }, {
    key: "renderItem",
    value: function renderItem(item, index) {
      if (item.separator) return this.renderSeparator(index);else return this.renderMenuitem(item, index);
    }
  }, {
    key: "renderMenu",
    value: function renderMenu() {
      var _this3 = this;

      if (this.props.model) {
        return this.props.model.map(function (item, index) {
          return _this3.renderItem(item, index);
        });
      }

      return null;
    }
  }, {
    key: "render",
    value: function render() {
      var className = classNames('p-submenu-list', this.props.className);
      var menu = this.renderMenu();
      return /*#__PURE__*/React.createElement("ul", {
        className: className,
        role: "tree"
      }, menu);
    }
  }]);

  return PanelMenuSub;
}(Component);

_defineProperty(PanelMenuSub, "defaultProps", {
  model: null,
  multiple: false
});

var PanelMenu = /*#__PURE__*/function (_Component2) {
  _inherits(PanelMenu, _Component2);

  var _super2 = _createSuper(PanelMenu);

  function PanelMenu(props) {
    var _this4;

    _classCallCheck(this, PanelMenu);

    _this4 = _super2.call(this, props);
    _this4.state = {
      id: props.id,
      activeItem: _this4.findActiveItem()
    };
    return _this4;
  }

  _createClass(PanelMenu, [{
    key: "onItemClick",
    value: function onItemClick(event, item) {
      if (item.disabled) {
        event.preventDefault();
        return;
      }

      if (!item.url) {
        event.preventDefault();
      }

      if (item.command) {
        item.command({
          originalEvent: event,
          item: item
        });
      }

      var activeItem = this.state.activeItem;
      var active = this.isItemActive(item);

      if (active) {
        item.expanded = false;
        this.setState({
          activeItem: this.props.multiple ? activeItem.filter(function (a_item) {
            return a_item !== item;
          }) : null
        });
      } else {
        if (!this.props.multiple && activeItem) {
          activeItem.expanded = false;
        }

        item.expanded = true;
        this.setState({
          activeItem: this.props.multiple ? [].concat(_toConsumableArray(activeItem || []), [item]) : item
        });
      }
    }
  }, {
    key: "findActiveItem",
    value: function findActiveItem() {
      if (this.props.model) {
        if (this.props.multiple) {
          return this.props.model.filter(function (item) {
            return item.expanded;
          });
        } else {
          var activeItem = null;
          this.props.model.forEach(function (item) {
            if (item.expanded) {
              if (!activeItem) activeItem = item;else item.expanded = false;
            }
          });
          return activeItem;
        }
      }

      return null;
    }
  }, {
    key: "isItemActive",
    value: function isItemActive(item) {
      return this.state.activeItem && (this.props.multiple ? this.state.activeItem.indexOf(item) > -1 : this.state.activeItem === item);
    }
  }, {
    key: "componentDidMount",
    value: function componentDidMount() {
      if (!this.state.id) {
        this.setState({
          id: UniqueComponentId()
        });
      }
    }
  }, {
    key: "renderPanel",
    value: function renderPanel(item, index) {
      var _this5 = this;

      var active = this.isItemActive(item);
      var className = classNames('p-panelmenu-panel', item.className);
      var headerClassName = classNames('p-component p-panelmenu-header', {
        'p-highlight': active,
        'p-disabled': item.disabled
      });
      var submenuIconClassName = classNames('p-panelmenu-icon pi', {
        'pi-chevron-right': !active,
        ' pi-chevron-down': active
      });
      var iconClassName = classNames('p-menuitem-icon', item.icon);
      var submenuIcon = item.items && /*#__PURE__*/React.createElement("span", {
        className: submenuIconClassName
      });
      var itemIcon = item.icon && /*#__PURE__*/React.createElement("span", {
        className: iconClassName
      });
      var label = item.label && /*#__PURE__*/React.createElement("span", {
        className: "p-menuitem-text"
      }, item.label);
      var contentWrapperClassName = classNames('p-toggleable-content', {
        'p-toggleable-content-collapsed': !active
      });
      var menuContentRef = /*#__PURE__*/React.createRef();
      var content = /*#__PURE__*/React.createElement("a", {
        href: item.url || '#',
        className: "p-panelmenu-header-link",
        onClick: function onClick(e) {
          return _this5.onItemClick(e, item);
        },
        "aria-expanded": active,
        id: this.state.id + '_header',
        "aria-controls": this.state.id + 'content',
        "aria-disabled": item.disabled
      }, submenuIcon, itemIcon, label);

      if (item.template) {
        var defaultContentOptions = {
          onClick: function onClick(event) {
            return _this5.onItemClick(event, item);
          },
          className: 'p-panelmenu-header-link',
          labelClassName: 'p-menuitem-text',
          submenuIconClassName: submenuIconClassName,
          iconClassName: iconClassName,
          element: content,
          props: this.props,
          leaf: !item.items,
          active: active
        };
        content = ObjectUtils.getJSXElement(item.template, item, defaultContentOptions);
      }

      return /*#__PURE__*/React.createElement("div", {
        key: item.label + '_' + index,
        className: className,
        style: item.style
      }, /*#__PURE__*/React.createElement("div", {
        className: headerClassName,
        style: item.style
      }, content), /*#__PURE__*/React.createElement(CSSTransition, {
        nodeRef: menuContentRef,
        classNames: "p-toggleable-content",
        timeout: {
          enter: 1000,
          exit: 450
        },
        "in": active,
        unmountOnExit: true,
        options: this.props.transitionOptions
      }, /*#__PURE__*/React.createElement("div", {
        ref: menuContentRef,
        className: contentWrapperClassName,
        role: "region",
        id: this.state.id + '_content',
        "aria-labelledby": this.state.id + '_header'
      }, /*#__PURE__*/React.createElement("div", {
        className: "p-panelmenu-content"
      }, /*#__PURE__*/React.createElement(PanelMenuSub, {
        model: item.items,
        className: "p-panelmenu-root-submenu",
        multiple: this.props.multiple
      })))));
    }
  }, {
    key: "renderPanels",
    value: function renderPanels() {
      var _this6 = this;

      if (this.props.model) {
        return this.props.model.map(function (item, index) {
          return _this6.renderPanel(item, index);
        });
      }

      return null;
    }
  }, {
    key: "render",
    value: function render() {
      var className = classNames('p-panelmenu p-component', this.props.className);
      var panels = this.renderPanels();
      return /*#__PURE__*/React.createElement("div", {
        id: this.props.id,
        className: className,
        style: this.props.style
      }, panels);
    }
  }]);

  return PanelMenu;
}(Component);

_defineProperty(PanelMenu, "defaultProps", {
  id: null,
  model: null,
  style: null,
  className: null,
  multiple: false,
  transitionOptions: null
});

export { PanelMenu };