import template from "./Select.html";

  import style from "antd/lib/select/style/index.css";
  angular
      .module("esNgAntd")

      .directive("antdSelect", function ($compile, $timeout, esNgAntd) {

          return {

              controllerAs: "antdSelect",

              restrict: "E",
              transclude: true,
              replace: true,
              scope: {
                  value: "@",

                  defaultValue: "@",

                  placeholder: "@",
                  onChange: "&",
                  placeholder: "@",
                  getPopupContainer: "&",

                  size: "@",

              },
              template: template,

              controller: function ($scope, $element, $attrs) {

                  this.getContext = function () {
                      return $scope;
                  };

                  $scope.state = {
                      open: false,
                      childrens: [],
                      label: null,

                      value: $scope.value || $scope.defaultValue,

                      popup: null,
                  };

                  $scope.setValue = function (value) {
                      let option = $scope.state.childrens.find(function (option) {
                          return option.value === value;
                      });
  
                      if (option) {
                          option.label = option.element.text();
                          $scope.state.label = option.label;
                          $scope.state.value = option.value;
                      } else {
                          $scope.state.label = null;
                          $scope.state.value = null;
                      }
                  };
  

                  $scope.addOption = function (option) {
                      $scope.state.childrens.push(option);
                  };

                  $scope.handleClick = function (option) {
                      $scope.state.open = !$scope.state.open;
                      $scope.state.label = option.label;
                      $scope.state.value = option.value;
                      $scope.onChange({
                          value: $scope.state.value,
                      });
                  };

                  $scope.getOffset = function (ele) {
                      if (!ele || ele.nodeType != 1) {
                          return;
                      }

                      let func = $scope.getPopupContainer();

                      if (typeof func === "function" && func() !== undefined) {

                          let containerElement = func();
                          containerElement.style.position = "relative";

                          return {
                              top: $element[0].offsetTop,
                              left: $element[0].offsetLeft,
                          };
                      } else {
                          let rect = ele.getBoundingClientRect();
                          let doc = ele.ownerDocument.documentElement;
                          return {
                              top: rect.top + window.pageYOffset - doc.clientTop,
                              left:
                                  rect.left + window.pageXOffset - doc.clientLeft,
                          };
                      }
                  };

                  $scope.myEvent = function () {
                      $timeout(() => {
                          $scope.state.open = false;
                          document.body.removeEventListener(
                              "click",
                              $scope.myEvent
                          );
                      }, 0);
                  };

                  $scope.handleBlur = function () {
                      // 事件绑定
                      document.body.addEventListener("click", $scope.myEvent);
                  };

                  $scope.handleOpen = function (event) {
                      event.stopPropagation();
                      const { height, width } =
                          $element[0].getBoundingClientRect();
                      const { top, left } = $scope.getOffset($element[0]); // 处理标签
  
                      $scope.state.childrens.forEach(function (item) {
                          item.label = item.element.text();
                      });
                      let div = document.createElement("div");
                      div.style.position = "absolute";
                      div.style.left = 0;
                      div.style.top = 0;
                      div.style.width = "100%";
                      div.appendChild(
                          $compile(`<div><div ng-class="'ant-select-dropdown ant-select-dropdown-placement-bottomLeft'+(!state.open?' ant-select-dropdown-hidden':'')" style="width: ${width}px; left: ${left}px; top: ${
                              top + height + 2
                          }px;">
              <div class="ant-select-item ant-select-item-option" ng-click="handleClick(option)" ng-repeat="option in state.childrens">
                  <div class="ant-select-item-option-content">{{option.label}}</div>
              </div>

          </div></div>`)($scope)[0]

                      );

                      if ($scope.state.popup === null) {
                          let func = $scope.getPopupContainer();

                          if (
                              typeof func === "function" &&
                              func() !== undefined
                          ) {
                              $element[0].style.position = "relative";
                              $scope.getPopupContainer()().appendChild(div);
                          } else {
                              document.body.appendChild(div);
                          }
  
                          $scope.state.popup = div;

                      }
  

                      $scope.state.open = !$scope.state.open;
                      $scope.handleBlur();
                  };
              },

              require: ["?^antdForm", "?^antdFormItem"],

              link: function (
                  $scope,
                  $element,
                  $attrs,
                  $controllers,
                  $transclude
              ) {

                  let [antdForm, antdFormItem] = $controllers;

                  esNgAntd.createStyle("ant-select", style);

                  if (antdForm) {
                      $scope.antdForm = antdForm.getContext();
                      $scope.antdForm.state.formItems.push($scope);

                  }

                  if (antdFormItem) {
                      $scope.antdFormItem = antdFormItem.getContext();

                  }
  
                  $timeout(function () {
                      $scope.setValue($scope.value || $scope.defaultValue);
                  }, 100);

              },
          };
      });