import { globalKeyDownManager } from "./keydown_manager.js";

class ContextMenu {
  constructor(ui) {
    this.wrapperUi = ui;

    this.menus = {
      world: ui.querySelector("#context-menu"),
      object: ui.querySelector("#object-context-menu"),
      boxEditor: ui.querySelector("#box-editor-context-menu"),
      boxEditorManager: ui.querySelector("#box-editor-manager-context-menu"),
      playSubMenu: ui.querySelector("#play-submenu"),
      gotoSubMenu: ui.querySelector("#goto-submenu"),
      fitSubMenu: ui.querySelector("#cm-fit-submenu"),
      //thisSubMenu: ui.querySelector("#cm-this-submenu"),
    };

    for (let m in this.menus) {
      for (let i = 0; i < this.menus[m].children.length; i++) {
        this.menus[m].children[i].onclick = (event) => {
          //event.preventDefault();
          event.stopPropagation();

          let ret = this.handler.handleContextMenuEvent(event);
          if (ret) {
            this.hide();
          }
        };
      }
    }

    let motherMenu = {
      "#cm-goto": "#goto-submenu",
      "#cm-new": "#new-submenu",
      "#cm-play": "#play-submenu",
      "#cm-fit": "#cm-fit-submenu",
      //"#cm-this": "#cm-this-submenu",
    };

    for (let item in motherMenu) {
      let menu = ui.querySelector(item);
      menu.onclick = (event) => {
        return false;
      };

      let self = this;
      menu.onmouseenter = function (event) {
        if (this.timerId) {
          clearTimeout(this.timerId);
          this.timerId = null;
        }

        let menu = event.currentTarget.querySelector(motherMenu[item]);
        menu.style.display = "inherit";

        let motherMenuRect = event.currentTarget.getBoundingClientRect();
        let posX = motherMenuRect.right;
        let posY = motherMenuRect.bottom;

        if (self.wrapperUi.clientHeight < posY + menu.clientHeight) {
          menu.style.bottom = "0%";
          menu.style.top = "";
        } else {
          menu.style.top = "0%";
          menu.style.bottom = "";
        }

        if (self.wrapperUi.clientWidth < posX + menu.clientWidth) {
          menu.style.right = "100%";
          menu.style.left = "";
        } else {
          menu.style.left = "100%";
          menu.style.right = "";
        }
      };

      menu.onmouseleave = function (event) {
        let ui = event.currentTarget.querySelector(motherMenu[item]);
        this.timerId = setTimeout(() => {
          ui.style.display = "none";
          this.timerId = null;
        }, 200);
      };
    }

    this.wrapperUi.onclick = (event) => {
      this.hide();
      event.preventDefault();
      event.stopPropagation();
    };

    this.wrapperUi.oncontextmenu = (event) => {
      //event.currentTarget.style.display="none";
      event.preventDefault();
      event.stopPropagation();
    };
  }

  // install dynamic menu, like object new
  installMenu(name, ui, funcHandler) {
    this.menus[name] = ui;

    for (let i = 0; i < ui.children.length; i++) {
      ui.children[i].onclick = (event) => {
        //event.preventDefault();
        event.stopPropagation();

        let ret = funcHandler(event);
        if (ret) {
          this.hide();
        }
      };
    }
  }

  hide() {
    this.wrapperUi.style.display = "none";
    globalKeyDownManager.deregister("context menu");
  }

  show(name, posX, posY, handler, funcSetPos) {
    this.handler = handler;

    //hide all others
    for (let m in this.menus) {
      if (m !== name) this.menus[m].style.display = "none";
    }

    // show
    this.wrapperUi.style.display = "block";

    let menu = this.menus[name];
    menu.style.display = "inherit";

    this.currentMenu = menu;

    if (funcSetPos) {
      funcSetPos(menu);
    } else {
      if (this.wrapperUi.clientHeight < posY + menu.clientHeight) {
        menu.style.top = this.wrapperUi.clientHeight - menu.clientHeight + "px";
      } else {
        menu.style.top = posY + "px";
      }

      if (this.wrapperUi.clientWidth < posX + menu.clientWidth) {
        menu.style.left = this.wrapperUi.clientWidth - menu.clientWidth + "px";
      } else {
        menu.style.left = posX + "px";
      }
    }

    globalKeyDownManager.register((event) => {
      let menuRect = this.currentMenu.getBoundingClientRect();
      let ret = this.handler.handleContextMenuKeydownEvent(event, {
        x: menuRect.left,
        y: menuRect.top,
      });
      if (!ret) {
        this.hide();
      }

      return false; // false means don't propogate
    }, "context menu");
  }
}

export { ContextMenu };