import template from "./Popover.html";

  import style from "antd/lib/popover/style/index.css";

  
  class Popover {

      template = template;
  

      useModules = ["$compile", "$timeout", "esNgAntd"];

      props = {
          title: String,
          content: String,
          context: Object,
          placement: String,
          getPopupContainer: Function,

          trigger: String,

      };
  
      state = {
          visible: false,
          content: this.props.content ? this.props.content : "",
          clickTarget: null,

          trigger: this.props.trigger || "hover",
          closing: false,

      };
  

      constructor() {

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

          this.state.target = $element[0];
          let title = this.props.title
              ? `<div class="ant-popover-title"><span>${this.props.title}</span></div>`
              : "";
          let content = `<div>

              <div style="outline:none" ng-class="'ant-popover ant-popover-placement-${this.props.placement}'+(!state.visible?' ant-popover-hidden': '')+(state.visible?' ant-zoom-big-enter ant-zoom-big-enter-active': '')" ng-mouseleave="onMouseLeave()" ng-mouseenter="onMouseEnter()">

                  <div class="ant-popover-content">

                      <div class="ant-popover-arrow">
                          <span class="ant-popover-arrow-content"></span>
                      </div>

                      <div class="ant-popover-inner">
                          <div>
                              ${title}

                              <div class="ant-popover-inner-content"></div>

                          </div>
                      </div>
                  </div>
              </div>
          </div>`;
          let div = document.createElement("div");
          if (typeof this.props.getPopupContainer() === "function") {
              this.state.popupContainer = this.props.getPopupContainer()();
          }
          if (!this.state.popupContainer) {
              div.style.position = "absolute";
              div.style.top = "0px";
              div.style.left = "0px";
              div.style.width = "100%";
              div.innerHTML = content;
              document.body.appendChild(div);
          } else {

              this.state.popupContainer.appendChild(div);
          }
          div.addEventListener("click", function (event) {
              event.stopPropagation();
          });
          this.state.target.addEventListener("click", (e) => {
              e.stopPropagation();
          });
          $compile(div)($scope);

          div.querySelector(".ant-popover-inner-content").innerHTML =
              this.state.content;
          $compile(div.querySelector(".ant-popover-inner-content"))(
              $scope.$parent
          );

          this.state.popover = div;
      }
  
      myEvent() {
          setTimeout(() => {
              this.state.visible = false;
              this.$apply();
              document.body.removeEventListener("click", this.myEvent);
          }, 0);
      }
  
      handleClick() {

          if (this.state.trigger !== "click") {
              return;
          }

          if (this.state.visible === false) {
              // 气泡层（显示）
              this.state.visible = true;

              // 处理位置

              this.handlePosition();
              // 事件绑定
              document.body.addEventListener("click", this.myEvent);
          } else {
              setTimeout(() => {
                  this.state.visible = false;
                  this.$apply();
                  document.body.removeEventListener("click", this.myEvent);
              }, 0);
          }
      }
  

      showPopover() {
          // 气泡层（显示）
          this.state.visible = true;
          // 调整位置
          this.handlePosition();
      }
  
      hidePopover() {
          this.state.closing = true;
          $timeout(function () {
              if (this.state.closing === false) {
                  return;
              }
              this.state.visible = false;
          }, 100);
      }
  
      onMouseEnter() {
          if (this.state.trigger !== "hover") {
              return;
          }
          if (this.state.closing === true) {
              this.state.closing = false;
          }
          this.showPopover();
      }
  
      onMouseLeave() {
          if (this.state.trigger !== "hover") {
              return;
          }
          this.hidePopover();
      }
  

      handlePosition() {
          setTimeout(function () {
              let popover = this.state.popover.querySelector(".ant-popover");
              if (this.props.placement === "top") {
                  popover.style["top"] = this.getTop();
              } else if (this.props.placement === "bottom") {
                  popover.style["top"] = this.getTop();
              }
              popover.style.left = this.getLeft() + "px";
          }, 0);
      }
  
      getLeft() {
          let parent = this.props.getPopupContainer();
          let popover = this.state.popover.querySelector(".ant-popover");
          let target = this.state.target;
          if (parent) {
              return -(popover.clientWidth / 2 - target.clientWidth / 2);
          } else {

              let offset = esNgAntd.getOffset(target);

              return (

                  offset.left - (popover.clientWidth / 2 - target.clientWidth / 2)

              );
          }
      }
  
      getTop() {
          let parent = this.props.getPopupContainer();
          let popover = this.state.popover.querySelector(".ant-popover");
          let target = this.state.target;
          if (parent) {
              if (this.props.placement === "top") {
                  return -popover.clientHeight + "px";
              } else if (this.props.placement === "bottom") {
              }
          } else {

              let offset = esNgAntd.getOffset(target);

              if (this.props.placement === "top") {

                  return offset.top - popover.clientHeight - 4 + "px";

              } else if (this.props.placement === "bottom") {

                  return offset.top + target.clientHeight + 4 + "px";

              }
          }
      }
  }