plane/web/layouts/app-layout/sidebar.tsx

import { FC, useRef } from "react";
import { observer } from "mobx-react";
// components
import { ProjectSidebarList } from "@/components/project";
import {
  WorkspaceHelpSection,
  WorkspaceSidebarDropdown,
  WorkspaceSidebarMenu,
  WorkspaceSidebarQuickAction,
} from "@/components/workspace";
// hooks
import { useAppTheme } from "@/hooks/store";
import useOutsideClickDetector from "@/hooks/use-outside-click-detector";

export interface IAppSidebar {}

export const AppSidebar: FC<IAppSidebar> = observer(() => {
  // store hooks
  const { toggleSidebar, sidebarCollapsed } = useAppTheme();
  // refs
  const ref = useRef<HTMLDivElement>(null);

  useOutsideClickDetector(ref, () => {
    if (sidebarCollapsed === false) {
      if (window.innerWidth < 768) {
        toggleSidebar();
      }
    }
  });

  return (
    <div
      className={`fixed inset-y-0 z-20 flex h-full flex-shrink-0 flex-grow-0 flex-col border-r border-custom-sidebar-border-200 bg-custom-sidebar-background-100
        duration-300 md:relative
        ${sidebarCollapsed ? "-ml-[280px]" : ""}
        sm:${sidebarCollapsed ? "-ml-[280px]" : ""}
        md:ml-0 ${sidebarCollapsed ? "w-[80px]" : "w-[280px]"}
        lg:ml-0 ${sidebarCollapsed ? "w-[80px]" : "w-[280px]"}
      `}
    >
      <div ref={ref} className="flex h-full w-full flex-1 flex-col">
        <WorkspaceSidebarDropdown />
        <WorkspaceSidebarQuickAction />
        <WorkspaceSidebarMenu />
        <ProjectSidebarList />
        <WorkspaceHelpSection />
      </div>
    </div>
  );
});