import { SelectorIcon } from "@heroicons/react/outline";
import {
  CalendarIcon,
  ClockIcon,
  CogIcon,
  ExternalLinkIcon,
  LinkIcon,
  LogoutIcon,
  PuzzleIcon,
} from "@heroicons/react/solid";
import { signOut, useSession } from "next-auth/client";
import Link from "next/link";
import { useRouter } from "next/router";
import React, { ReactNode, useEffect } from "react";
import { Toaster } from "react-hot-toast";

import LicenseBanner from "@ee/components/LicenseBanner";
import HelpMenuItemDynamic from "@ee/lib/intercom/HelpMenuItemDynamic";

import classNames from "@lib/classNames";
import { shouldShowOnboarding } from "@lib/getting-started";
import { useLocale } from "@lib/hooks/useLocale";
import { collectPageParameters, telemetryEventTypes, useTelemetry } from "@lib/telemetry";
import { trpc } from "@lib/trpc";

import Loader from "@components/Loader";
import { HeadSeo } from "@components/seo/head-seo";
import Avatar from "@components/ui/Avatar";
import Dropdown, {
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@components/ui/Dropdown";

import { useViewerI18n } from "./I18nLanguageHandler";
import Logo from "./Logo";

function useMeQuery() {
  const meQuery = trpc.useQuery(["viewer.me"]);

  return meQuery;
}

function useRedirectToLoginIfUnauthenticated() {
  const [session, loading] = useSession();
  const router = useRouter();
  const query = useMeQuery();

  useEffect(() => {
    if (!loading && !session) {
      router.replace({
        pathname: "/auth/login",
        query: {
          callbackUrl: `${location.pathname}${location.search}`,
        },
      });
    }
  }, [loading, session, router]);

  if (query.status !== "loading" && !query.data) {
    router.replace("/auth/login");
  }
}

function useRedirectToOnboardingIfNeeded() {
  const [session, loading] = useSession();
  const router = useRouter();
  const query = useMeQuery();
  const user = query.data;

  useEffect(() => {
    if (!loading && user) {
      if (shouldShowOnboarding(user)) {
        router.replace({
          pathname: "/getting-started",
        });
      }
    }
  }, [loading, session, router, user]);
}

export function ShellSubHeading(props: {
  title: ReactNode;
  subtitle?: ReactNode;
  actions?: ReactNode;
  className?: string;
}) {
  return (
    <div className={classNames("block sm:flex justify-between mb-3", props.className)}>
      <div>
        <h2 className="flex items-center content-center space-x-2 text-lg font-bold text-gray-900">
          {props.title}
        </h2>
        {props.subtitle && <p className="mr-4 text-sm text-neutral-500">{props.subtitle}</p>}
      </div>
      {props.actions && <div className="flex-shrink-0 mb-4">{props.actions}</div>}
    </div>
  );
}

export default function Shell(props: {
  centered?: boolean;
  title?: string;
  heading: ReactNode;
  subtitle?: ReactNode;
  children: ReactNode;
  CTA?: ReactNode;
}) {
  const { t } = useLocale();
  const router = useRouter();
  useRedirectToLoginIfUnauthenticated();
  useRedirectToOnboardingIfNeeded();

  const telemetry = useTelemetry();

  const navigation = [
    {
      name: t("event_types_page_title"),
      href: "/event-types",
      icon: LinkIcon,
      current: router.asPath.startsWith("/event-types"),
    },
    {
      name: t("bookings"),
      href: "/bookings/upcoming",
      icon: ClockIcon,
      current: router.asPath.startsWith("/bookings"),
    },
    {
      name: t("availability"),
      href: "/availability",
      icon: CalendarIcon,
      current: router.asPath.startsWith("/availability"),
    },
    {
      name: t("integrations"),
      href: "/integrations",
      icon: PuzzleIcon,
      current: router.asPath.startsWith("/integrations"),
    },
    {
      name: t("settings"),
      href: "/settings/profile",
      icon: CogIcon,
      current: router.asPath.startsWith("/settings"),
    },
  ];

  useEffect(() => {
    telemetry.withJitsu((jitsu) => {
      return jitsu.track(telemetryEventTypes.pageView, collectPageParameters(router.asPath));
    });
  }, [telemetry, router.asPath]);

  const pageTitle = typeof props.heading === "string" ? props.heading : props.title;

  const i18n = useViewerI18n();

  if (i18n.status === "loading") {
    // show spinner whilst i18n is loading to avoid language flicker
    return (
      <div className="z-50 absolute w-full h-screen bg-gray-50 flex items-center">
        <Loader />
      </div>
    );
  }
  return (
    <>
      <HeadSeo
        title={pageTitle ?? "Cal.com"}
        description={props.subtitle ? props.subtitle?.toString() : ""}
        nextSeoProps={{
          nofollow: true,
          noindex: true,
        }}
      />
      <div>
        <Toaster position="bottom-right" />
      </div>

      <div className="flex h-screen overflow-hidden bg-gray-100">
        <div className="hidden md:flex md:flex-shrink-0">
          <div className="flex flex-col w-56">
            <div className="flex flex-col flex-1 h-0 bg-white border-r border-gray-200">
              <div className="flex flex-col flex-1 pt-5 pb-4 overflow-y-auto">
                <Link href="/event-types">
                  <a className="px-4">
                    <Logo small />
                  </a>
                </Link>
                <nav className="flex-1 px-2 mt-5 space-y-1 bg-white">
                  {navigation.map((item) => (
                    <Link key={item.name} href={item.href}>
                      <a
                        className={classNames(
                          item.current
                            ? "bg-neutral-100 text-neutral-900"
                            : "text-neutral-500 hover:bg-gray-50 hover:text-neutral-900",
                          "group flex items-center px-2 py-2 text-sm font-medium rounded-sm"
                        )}>
                        <item.icon
                          className={classNames(
                            item.current
                              ? "text-neutral-500"
                              : "text-neutral-400 group-hover:text-neutral-500",
                            "mr-3 flex-shrink-0 h-5 w-5"
                          )}
                          aria-hidden="true"
                        />
                        {item.name}
                      </a>
                    </Link>
                  ))}
                </nav>
              </div>
              <div className="p-4 pt-2 pr-2">
                <UserDropdown />
              </div>
            </div>
          </div>
        </div>

        <div className="flex flex-col flex-1 w-0 overflow-hidden">
          <main className="flex-1 relative z-0 overflow-y-auto focus:outline-none max-w-[1700px]">
            {/* show top navigation for md and smaller (tablet and phones) */}
            <nav className="flex items-center justify-between p-4 bg-white shadow md:hidden">
              <Link href="/event-types">
                <a>
                  <Logo />
                </a>
              </Link>
              <div className="flex items-center self-center gap-3">
                <button className="p-2 text-gray-400 bg-white rounded-full hover:text-gray-500 hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-black">
                  <span className="sr-only">View notifications</span>
                  <Link href="/settings/profile">
                    <a>
                      <CogIcon className="w-6 h-6" aria-hidden="true" />
                    </a>
                  </Link>
                </button>
                <UserDropdown small />
              </div>
            </nav>
            <div className={classNames(props.centered && "md:max-w-5xl mx-auto", "py-8")}>
              <div className="block sm:flex justify-between px-4 sm:px-6 md:px-8 min-h-[80px]">
                <div className="w-full mb-8">
                  <h1 className="mb-1 text-xl font-bold tracking-wide text-gray-900 font-cal">
                    {props.heading}
                  </h1>
                  <p className="mr-4 text-sm text-neutral-500">{props.subtitle}</p>
                </div>
                <div className="flex-shrink-0 mb-4">{props.CTA}</div>
              </div>
              <div className="px-4 sm:px-6 md:px-8">{props.children}</div>
              {/* show bottom navigation for md and smaller (tablet and phones) */}
              <nav className="fixed bottom-0 flex w-full bg-white shadow bottom-nav md:hidden">
                {/* note(PeerRich): using flatMap instead of map to remove settings from bottom nav */}
                {navigation.flatMap((item, itemIdx) =>
                  item.name === "Settings" ? (
                    []
                  ) : (
                    <Link key={item.name} href={item.href}>
                      <a
                        className={classNames(
                          item.current ? "text-gray-900" : "text-neutral-400 hover:text-gray-700",
                          itemIdx === 0 ? "rounded-l-lg" : "",
                          itemIdx === navigation.length - 1 ? "rounded-r-lg" : "",
                          "group relative min-w-0 flex-1 overflow-hidden bg-white py-2 px-2 text-xs sm:text-sm font-medium text-center hover:bg-gray-50 focus:z-10"
                        )}
                        aria-current={item.current ? "page" : undefined}>
                        <item.icon
                          className={classNames(
                            item.current ? "text-gray-900" : "text-gray-400 group-hover:text-gray-500",
                            "block mx-auto flex-shrink-0 h-5 w-5 mb-1 text-center"
                          )}
                          aria-hidden="true"
                        />
                        <span>{item.name}</span>
                      </a>
                    </Link>
                  )
                )}
              </nav>
              {/* add padding to content for mobile navigation*/}
              <div className="block pt-12 md:hidden" />
            </div>
            <LicenseBanner />
          </main>
        </div>
      </div>
    </>
  );
}

function UserDropdown({ small }: { small?: boolean }) {
  const query = useMeQuery();
  const user = query.data;

  return (
    !!user && (
      <Dropdown>
        <DropdownMenuTrigger asChild>
          <div className="flex items-center space-x-2 cursor-pointer group">
            <Avatar
              imageSrc={user.avatar}
              alt={user.username}
              className={classNames(
                small ? "w-8 h-8" : "w-10 h-10",
                "bg-gray-300 rounded-full flex-shrink-0"
              )}
            />
            {!small && (
              <>
                <span className="flex-grow text-sm">
                  <span className="block font-medium text-gray-900 truncate">{user.name}</span>
                  <span className="block font-normal truncate text-neutral-500">/{user.username}</span>
                </span>
                <SelectorIcon
                  className="flex-shrink-0 w-5 h-5 text-gray-400 group-hover:text-gray-500"
                  aria-hidden="true"
                />
              </>
            )}
          </div>
        </DropdownMenuTrigger>
        <DropdownMenuContent>
          <DropdownMenuItem>
            <a
              target="_blank"
              rel="noopener noreferrer"
              href={`${process.env.NEXT_PUBLIC_APP_URL}/${user?.username || ""}`}
              className="flex px-4 py-2 text-sm text-neutral-500">
              View public page <ExternalLinkIcon className="w-3 h-3 mt-1 ml-1 text-neutral-400" />
            </a>
          </DropdownMenuItem>
          <DropdownMenuSeparator className="h-px bg-gray-200" />
          <DropdownMenuItem>
            <a
              href="https://cal.com/slack"
              target="_blank"
              rel="noreferrer"
              className="flex px-4 py-2 text-sm font-medium text-neutral-700 hover:bg-gray-100 hover:text-gray-900">
              <svg
                viewBox="0 0 2447.6 2452.5"
                className={classNames(
                  "text-neutral-400 group-hover:text-neutral-500",
                  "mt-0.5 mr-3 flex-shrink-0 h-4 w-4"
                )}
                xmlns="http://www.w3.org/2000/svg">
                <g clipRule="evenodd" fillRule="evenodd">
                  <path
                    d="m897.4 0c-135.3.1-244.8 109.9-244.7 245.2-.1 135.3 109.5 245.1 244.8 245.2h244.8v-245.1c.1-135.3-109.5-245.1-244.9-245.3.1 0 .1 0 0 0m0 654h-652.6c-135.3.1-244.9 109.9-244.8 245.2-.2 135.3 109.4 245.1 244.7 245.3h652.7c135.3-.1 244.9-109.9 244.8-245.2.1-135.4-109.5-245.2-244.8-245.3z"
                    fill="#9BA6B6"></path>
                  <path
                    d="m2447.6 899.2c.1-135.3-109.5-245.1-244.8-245.2-135.3.1-244.9 109.9-244.8 245.2v245.3h244.8c135.3-.1 244.9-109.9 244.8-245.3zm-652.7 0v-654c.1-135.2-109.4-245-244.7-245.2-135.3.1-244.9 109.9-244.8 245.2v654c-.2 135.3 109.4 245.1 244.7 245.3 135.3-.1 244.9-109.9 244.8-245.3z"
                    fill="#9BA6B6"></path>
                  <path
                    d="m1550.1 2452.5c135.3-.1 244.9-109.9 244.8-245.2.1-135.3-109.5-245.1-244.8-245.2h-244.8v245.2c-.1 135.2 109.5 245 244.8 245.2zm0-654.1h652.7c135.3-.1 244.9-109.9 244.8-245.2.2-135.3-109.4-245.1-244.7-245.3h-652.7c-135.3.1-244.9 109.9-244.8 245.2-.1 135.4 109.4 245.2 244.7 245.3z"
                    fill="#9BA6B6"></path>
                  <path
                    d="m0 1553.2c-.1 135.3 109.5 245.1 244.8 245.2 135.3-.1 244.9-109.9 244.8-245.2v-245.2h-244.8c-135.3.1-244.9 109.9-244.8 245.2zm652.7 0v654c-.2 135.3 109.4 245.1 244.7 245.3 135.3-.1 244.9-109.9 244.8-245.2v-653.9c.2-135.3-109.4-245.1-244.7-245.3-135.4 0-244.9 109.8-244.8 245.1 0 0 0 .1 0 0"
                    fill="#9BA6B6"></path>
                </g>
              </svg>
              Join our Slack
            </a>
          </DropdownMenuItem>
          <HelpMenuItemDynamic />
          <DropdownMenuSeparator className="h-px bg-gray-200" />
          <DropdownMenuItem>
            <a
              onClick={() => signOut({ callbackUrl: "/auth/logout" })}
              className="flex px-4 py-2 text-sm font-medium cursor-pointer hover:bg-gray-100 hover:text-gray-900">
              <LogoutIcon
                className={classNames(
                  "text-neutral-400 group-hover:text-neutral-500",
                  "mr-2 flex-shrink-0 h-5 w-5"
                )}
                aria-hidden="true"
              />
              Sign out
            </a>
          </DropdownMenuItem>
        </DropdownMenuContent>
      </Dropdown>
    )
  );
}