import React, { useRef, useState } from "react";
import { observer } from "mobx-react-lite";
import Link from "next/link";
// headless ui
import { Transition } from "@headlessui/react";
// icons
import { FileText, HelpCircle, MessagesSquare, MoveLeft, Zap } from "lucide-react";
// ui
import { DiscordIcon, GithubIcon, Tooltip } from "@plane/ui";
// hooks
import { useApplication } from "hooks/store";
import useOutsideClickDetector from "hooks/use-outside-click-detector";
import { usePlatformOS } from "hooks/use-platform-os";
// assets
import packageJson from "package.json";

const HELP_OPTIONS = [
  {
    name: "Documentation",
    href: "https://docs.plane.so/",
    Icon: FileText,
  },
  {
    name: "Join our Discord",
    href: "https://discord.com/invite/A92xrEGCge",
    Icon: DiscordIcon,
  },
  {
    name: "Report a bug",
    href: "https://github.com/makeplane/plane/issues/new/choose",
    Icon: GithubIcon,
  },
];

export interface WorkspaceHelpSectionProps {
  setSidebarActive?: React.Dispatch<React.SetStateAction<boolean>>;
}

export const WorkspaceHelpSection: React.FC<WorkspaceHelpSectionProps> = observer(() => {
  // store hooks
  const {
    theme: { sidebarCollapsed, toggleSidebar },
    commandPalette: { toggleShortcutModal },
  } = useApplication();
  const { isMobile } = usePlatformOS();
  // states
  const [isNeedHelpOpen, setIsNeedHelpOpen] = useState(false);
  // refs
  const helpOptionsRef = useRef<HTMLDivElement | null>(null);

  const handleCrispWindowShow = () => {
    if (window) {
      window.$crisp.push(["do", "chat:show"]);
    }
  };

  useOutsideClickDetector(helpOptionsRef, () => setIsNeedHelpOpen(false));

  const isCollapsed = sidebarCollapsed || false;

  return (
    <>
      <div
        className={`flex w-full items-center justify-between gap-1 self-baseline border-t border-custom-border-200 bg-custom-sidebar-background-100 px-4 py-2 ${
          isCollapsed ? "flex-col" : ""
        }`}
      >
        {!isCollapsed && (
          <div className="w-1/2 cursor-default rounded-md bg-green-500/10 px-2.5 py-1.5 text-center text-sm font-medium text-green-500 outline-none">
            Free Plan
          </div>
        )}
        <div className={`flex items-center gap-1 ${isCollapsed ? "flex-col justify-center" : "w-1/2 justify-evenly"}`}>
          <Tooltip tooltipContent="Shortcuts" isMobile={isMobile}>
            <button
              type="button"
              className={`grid place-items-center rounded-md p-1.5 text-custom-text-200 outline-none hover:bg-custom-background-90 hover:text-custom-text-100 ${
                isCollapsed ? "w-full" : ""
              }`}
              onClick={() => toggleShortcutModal(true)}
            >
              <Zap className="h-3.5 w-3.5" />
            </button>
          </Tooltip>
          <Tooltip tooltipContent="Help" isMobile={isMobile}>
            <button
              type="button"
              className={`grid place-items-center rounded-md p-1.5 text-custom-text-200 outline-none hover:bg-custom-background-90 hover:text-custom-text-100 ${
                isCollapsed ? "w-full" : ""
              }`}
              onClick={() => setIsNeedHelpOpen((prev) => !prev)}
            >
              <HelpCircle className="h-3.5 w-3.5" />
            </button>
          </Tooltip>

          <button
            type="button"
            className="grid place-items-center rounded-md p-1.5 text-custom-text-200 outline-none hover:bg-custom-background-90 hover:text-custom-text-100 md:hidden"
            onClick={() => toggleSidebar()}
          >
            <MoveLeft className="h-3.5 w-3.5" />
          </button>

          <Tooltip tooltipContent={`${isCollapsed ? "Expand" : "Hide"}`} isMobile={isMobile}>
            <button
              type="button"
              className={`hidden place-items-center rounded-md p-1.5 text-custom-text-200 outline-none hover:bg-custom-background-90 hover:text-custom-text-100 md:grid ${
                isCollapsed ? "w-full" : ""
              }`}
              onClick={() => toggleSidebar()}
            >
              <MoveLeft className={`h-3.5 w-3.5 duration-300 ${isCollapsed ? "rotate-180" : ""}`} />
            </button>
          </Tooltip>
        </div>

        <div className="relative">
          <Transition
            show={isNeedHelpOpen}
            enter="transition ease-out duration-100"
            enterFrom="transform opacity-0 scale-95"
            enterTo="transform opacity-100 scale-100"
            leave="transition ease-in duration-75"
            leaveFrom="transform opacity-100 scale-100"
            leaveTo="transform opacity-0 scale-95"
          >
            <div
              className={`absolute bottom-2 min-w-[10rem] ${
                isCollapsed ? "left-full" : "-left-[75px]"
              } divide-y divide-custom-border-200 whitespace-nowrap rounded bg-custom-background-100 p-1 shadow-custom-shadow-xs`}
              ref={helpOptionsRef}
            >
              <div className="space-y-1 pb-2">
                {HELP_OPTIONS.map(({ name, Icon, href }) => (
                  <Link href={href} key={name} target="_blank">
                    <span className="flex items-center gap-x-2 rounded px-2 py-1 text-xs hover:bg-custom-background-80">
                      <div className="grid flex-shrink-0 place-items-center">
                        <Icon className="h-3.5 w-3.5 text-custom-text-200" size={14} />
                      </div>
                      <span className="text-xs">{name}</span>
                    </span>
                  </Link>
                ))}
                <button
                  type="button"
                  onClick={handleCrispWindowShow}
                  className="flex w-full items-center gap-x-2 rounded px-2 py-1 text-xs hover:bg-custom-background-80"
                >
                  <div className="grid flex-shrink-0 place-items-center">
                    <MessagesSquare className="h-3.5 w-3.5 text-custom-text-200" />
                  </div>
                  <span className="text-xs">Chat with us</span>
                </button>
              </div>
              <div className="px-2 pb-1 pt-2 text-[10px]">Version: v{packageJson.version}</div>
            </div>
          </Transition>
        </div>
      </div>
    </>
  );
});