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

import Button from "@calcom/ui/Button";
import Dropdown, {
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@calcom/ui/Dropdown";
import LicenseBanner from "@ee/components/LicenseBanner";
import TrialBanner from "@ee/components/TrialBanner";
import HelpMenuItem from "@ee/components/support/HelpMenuItem";

import classNames from "@lib/classNames";
import { NEXT_PUBLIC_BASE_URL } from "@lib/config/constants";
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 CustomBranding from "@components/CustomBranding";
import Loader from "@components/Loader";
import { HeadSeo } from "@components/seo/head-seo";

import pkg from "../package.json";
import { useViewerI18n } from "./I18nLanguageHandler";
import Logo from "./Logo";

export function useMeQuery() {
  const meQuery = trpc.useQuery(["viewer.me"], {
    retry(failureCount) {
      return failureCount > 3;
    },
  });

  return meQuery;
}

function useRedirectToLoginIfUnauthenticated() {
  const { data: session, status } = useSession();
  const loading = status === "loading";
  const router = useRouter();

  useEffect(() => {
    if (router.pathname.startsWith("/apps")) {
      return;
    }

    if (!loading && !session) {
      router.replace({
        pathname: "/auth/login",
        query: {
          callbackUrl: `${NEXT_PUBLIC_BASE_URL}/${location.pathname}${location.search}`,
        },
      });
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [loading, session]);

  return {
    loading: loading && !session,
  };
}

function useRedirectToOnboardingIfNeeded() {
  const router = useRouter();
  const query = useMeQuery();
  const user = query.data;

  const [isRedirectingToOnboarding, setRedirecting] = useState(false);

  useEffect(() => {
    user && setRedirecting(shouldShowOnboarding(user));
  }, [router, user]);

  useEffect(() => {
    if (isRedirectingToOnboarding) {
      router.replace({
        pathname: "/getting-started",
      });
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [isRedirectingToOnboarding]);
  return {
    isRedirectingToOnboarding,
  };
}

export function ShellSubHeading(props: {
  title: ReactNode;
  subtitle?: ReactNode;
  actions?: ReactNode;
  className?: string;
}) {
  return (
    <div className={classNames("mb-3 block justify-between sm:flex", props.className)}>
      <div>
        <h2 className="flex content-center items-center space-x-2 text-base font-bold leading-6 text-gray-900 rtl:space-x-reverse">
          {props.title}
        </h2>
        {props.subtitle && <p className="text-sm text-neutral-500 ltr:mr-4">{props.subtitle}</p>}
      </div>
      {props.actions && <div className="flex-shrink-0">{props.actions}</div>}
    </div>
  );
}

export default function Shell(props: {
  centered?: boolean;
  title?: string;
  heading?: ReactNode;
  subtitle?: ReactNode;
  children: ReactNode;
  CTA?: ReactNode;
  large?: boolean;
  HeadingLeftIcon?: ReactNode;
  backPath?: string; // renders back button to specified path
  // use when content needs to expand with flex
  flexChildrenContainer?: boolean;
}) {
  const { t } = useLocale();
  const router = useRouter();
  const { loading } = useRedirectToLoginIfUnauthenticated();
  const { isRedirectingToOnboarding } = 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: CalendarIcon,
      current: router.asPath.startsWith("/bookings"),
    },
    {
      name: t("availability"),
      href: "/availability",
      icon: ClockIcon,
      current: router.asPath.startsWith("/availability"),
    },
    {
      name: t("apps"),
      href: "/apps",
      icon: ViewGridIcon,
      current: router.asPath.startsWith("/apps"),
      child: [
        {
          name: t("app_store"),
          href: "/apps",
          current: router.asPath === "/apps",
        },
        {
          name: t("installed_apps"),
          href: "/apps/installed",
          current: router.asPath === "/apps/installed",
        },
      ],
    },
    {
      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 query = useMeQuery();
  const user = query.data;

  const i18n = useViewerI18n();
  const { status } = useSession();

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

      <div
        className={classNames("flex h-screen overflow-hidden", props.large ? "bg-white" : "bg-gray-100")}
        data-testid="dashboard-shell">
        {status === "authenticated" && (
          <div className="hidden md:flex lg:flex-shrink-0">
            <div className="flex w-14 flex-col lg:w-56">
              <div className="flex h-0 flex-1 flex-col border-r border-gray-200 bg-white">
                <div className="flex flex-1 flex-col overflow-y-auto pt-3 pb-4 lg:pt-5">
                  <Link href="/event-types">
                    <a className="px-4 md:hidden lg:inline">
                      <Logo small />
                    </a>
                  </Link>
                  {/* logo icon for tablet */}
                  <Link href="/event-types">
                    <a className="md:inline lg:hidden">
                      <Logo small icon />
                    </a>
                  </Link>
                  <nav className="mt-2 flex-1 space-y-1 bg-white px-2 lg:mt-5">
                    {navigation.map((item) => (
                      <Fragment key={item.name}>
                        <Link 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 rounded-sm px-2 py-2 text-sm font-medium"
                            )}>
                            <item.icon
                              className={classNames(
                                item.current
                                  ? "text-neutral-500"
                                  : "text-neutral-400 group-hover:text-neutral-500",
                                "h-5 w-5 flex-shrink-0 ltr:mr-3 rtl:ml-3"
                              )}
                              aria-hidden="true"
                            />
                            <span className="hidden lg:inline">{item.name}</span>
                          </a>
                        </Link>
                        {item.child &&
                          router.asPath.startsWith(item.href) &&
                          item.child.map((item) => {
                            return (
                              <Link key={item.name} href={item.href}>
                                <a
                                  className={classNames(
                                    item.current
                                      ? "text-neutral-900"
                                      : "text-neutral-500 hover:text-neutral-900",
                                    "group hidden items-center rounded-sm px-2 py-2 pl-10 text-sm font-medium lg:flex"
                                  )}>
                                  <span className="hidden lg:inline">{item.name}</span>
                                </a>
                              </Link>
                            );
                          })}
                      </Fragment>
                    ))}
                  </nav>
                </div>
                <TrialBanner />
                <div className="rounded-sm pb-2 pl-3 pt-2 pr-2 hover:bg-gray-100 lg:mx-2 lg:pl-2">
                  <span className="hidden lg:inline">
                    <UserDropdown />
                  </span>
                  <span className="hidden md:inline lg:hidden">
                    <UserDropdown small />
                  </span>
                </div>
                <small style={{ fontSize: "0.5rem" }} className="mx-3 mt-1 mb-2 hidden opacity-50 lg:block">
                  &copy; {new Date().getFullYear()} Cal.com, Inc. v.{pkg.version + "-"}
                  {process.env.NEXT_PUBLIC_WEBSITE_URL === "https://cal.com" ? "h" : "sh"}
                  <span className="lowercase">-{user && user.plan}</span>
                </small>
              </div>
            </div>
          </div>
        )}

        <div className="flex w-0 flex-1 flex-col overflow-hidden">
          <main
            className={classNames(
              "relative z-0 flex-1 overflow-y-auto focus:outline-none",
              status === "authenticated" && "max-w-[1700px]",
              props.flexChildrenContainer && "flex flex-col"
            )}>
            {/* show top navigation for md and smaller (tablet and phones) */}
            {status === "authenticated" && (
              <nav className="flex items-center justify-between border-b border-gray-200 bg-white p-4 md:hidden">
                <Link href="/event-types">
                  <a>
                    <Logo />
                  </a>
                </Link>
                <div className="flex items-center gap-3 self-center">
                  <button className="rounded-full bg-white p-2 text-gray-400 hover:bg-gray-50 hover:text-gray-500 focus:outline-none focus:ring-2 focus:ring-black focus:ring-offset-2">
                    <span className="sr-only">{t("view_notifications")}</span>
                    <Link href="/settings/profile">
                      <a>
                        <CogIcon className="h-6 w-6" aria-hidden="true" />
                      </a>
                    </Link>
                  </button>
                  <UserDropdown small />
                </div>
              </nav>
            )}
            <div
              className={classNames(
                props.centered && "mx-auto md:max-w-5xl",
                props.flexChildrenContainer && "flex flex-1 flex-col",
                !props.large && "py-8"
              )}>
              {!!props.backPath && (
                <div className="mx-3 mb-8 sm:mx-8">
                  <Button
                    onClick={() => router.push(props.backPath as string)}
                    StartIcon={ArrowLeftIcon}
                    color="secondary">
                    Back
                  </Button>
                </div>
              )}
              {props.heading && props.subtitle && (
                <div
                  className={classNames(
                    props.large && "bg-gray-100 py-8 lg:mb-8 lg:pt-16 lg:pb-7",
                    "block min-h-[80px] justify-between px-4 sm:flex sm:px-6 md:px-8"
                  )}>
                  {props.HeadingLeftIcon && <div className="ltr:mr-4">{props.HeadingLeftIcon}</div>}
                  <div className="mb-8 w-full">
                    <h1 className="font-cal mb-1 text-xl font-bold capitalize tracking-wide text-gray-900">
                      {props.heading}
                    </h1>
                    <p className="min-h-10 text-sm text-neutral-500 ltr:mr-4 rtl:ml-4">{props.subtitle}</p>
                  </div>
                  {props.CTA && <div className="mb-4 flex-shrink-0">{props.CTA}</div>}
                </div>
              )}
              <div
                className={classNames(
                  "px-4 sm:px-6 md:px-8",
                  props.flexChildrenContainer && "flex flex-1 flex-col"
                )}>
                {props.children}
              </div>
              {/* show bottom navigation for md and smaller (tablet and phones) */}
              {status === "authenticated" && (
                <nav className="bottom-nav fixed bottom-0 z-30 flex w-full bg-white shadow md:hidden">
                  {/* note(PeerRich): using flatMap instead of map to remove settings from bottom nav */}
                  {navigation.flatMap((item, itemIdx) =>
                    item.href === "/settings/profile" ? (
                      []
                    ) : (
                      <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-center text-xs font-medium hover:bg-gray-50 focus:z-10 sm:text-sm"
                          )}
                          aria-current={item.current ? "page" : undefined}>
                          <item.icon
                            className={classNames(
                              item.current ? "text-gray-900" : "text-gray-400 group-hover:text-gray-500",
                              "mx-auto mb-1 block h-5 w-5 flex-shrink-0 text-center"
                            )}
                            aria-hidden="true"
                          />
                          <span className="truncate">{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 { t } = useLocale();
  const query = useMeQuery();
  const user = query.data;
  const mutation = trpc.useMutation("viewer.away", {
    onSettled() {
      utils.invalidateQueries("viewer.me");
    },
  });
  const utils = trpc.useContext();

  return (
    <Dropdown>
      <DropdownMenuTrigger asChild>
        <button className="group flex w-full cursor-pointer appearance-none items-center text-left">
          <span
            className={classNames(
              small ? "h-8 w-8" : "h-10 w-10",
              "relative flex-shrink-0 rounded-full bg-gray-300  ltr:mr-3 rtl:ml-3"
            )}>
            <img
              className="rounded-full"
              src={process.env.NEXT_PUBLIC_WEBSITE_URL + "/" + user?.username + "/avatar.png"}
              alt={user?.username || "Nameless User"}
            />
            {!user?.away && (
              <div className="absolute bottom-0 right-0 h-3 w-3 rounded-full border-2 border-white bg-green-500"></div>
            )}
            {user?.away && (
              <div className="absolute bottom-0 right-0 h-3 w-3 rounded-full border-2 border-white bg-yellow-500"></div>
            )}
          </span>
          {!small && (
            <span className="flex flex-grow items-center truncate">
              <span className="flex-grow truncate text-sm">
                <span className="block truncate font-medium text-gray-900">
                  {user?.username || "Nameless User"}
                </span>
                <span className="block truncate font-normal text-neutral-500">
                  {user?.username ? `cal.com/${user.username}` : "No public page"}
                </span>
              </span>
              <SelectorIcon
                className="h-5 w-5 flex-shrink-0 text-gray-400 group-hover:text-gray-500"
                aria-hidden="true"
              />
            </span>
          )}
        </button>
      </DropdownMenuTrigger>
      <DropdownMenuContent portalled={true}>
        <DropdownMenuItem>
          <a
            onClick={() => {
              mutation.mutate({ away: !user?.away });
              utils.invalidateQueries("viewer.me");
            }}
            className="flex min-w-max cursor-pointer px-4 py-2 text-sm hover:bg-gray-100 hover:text-gray-900">
            <MoonIcon
              className={classNames(
                user?.away
                  ? "text-purple-500 group-hover:text-purple-700"
                  : "text-gray-500 group-hover:text-gray-700",
                "h-5 w-5 flex-shrink-0 ltr:mr-3 rtl:ml-3"
              )}
              aria-hidden="true"
            />
            {user?.away ? t("set_as_free") : t("set_as_away")}
          </a>
        </DropdownMenuItem>
        <DropdownMenuSeparator className="h-px bg-gray-200" />
        {user?.username && (
          <DropdownMenuItem>
            <a
              target="_blank"
              rel="noopener noreferrer"
              href={`${process.env.NEXT_PUBLIC_WEBSITE_URL}/${user.username}`}
              className="flex items-center px-4 py-2 text-sm text-gray-700">
              <ExternalLinkIcon className="h-5 w-5 text-gray-500 ltr:mr-3 rtl:ml-3" /> {t("view_public_page")}
            </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 text-gray-700 hover:bg-gray-100 hover:text-gray-900">
            <svg
              viewBox="0 0 2447.6 2452.5"
              className={classNames(
                "text-gray-500 group-hover:text-gray-700",
                "mt-0.5 h-4 w-4 flex-shrink-0 ltr:mr-4 rtl:ml-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="currentColor"></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="currentColor"></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="currentColor"></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="currentColor"></path>
              </g>
            </svg>
            {t("join_our_slack")}
          </a>
        </DropdownMenuItem>
        <DropdownMenuItem>
          <a
            target="_blank"
            rel="noopener noreferrer"
            href="https://cal.com/roadmap"
            className="flex items-center px-4 py-2 text-sm text-gray-700">
            <MapIcon className="h-5 w-5 text-gray-500 ltr:mr-3 rtl:ml-3" /> {t("visit_roadmap")}
          </a>
        </DropdownMenuItem>

        <HelpMenuItem />

        <DropdownMenuSeparator className="h-px bg-gray-200" />
        <DropdownMenuItem>
          <a
            onClick={() => signOut({ callbackUrl: "/auth/logout" })}
            className="flex cursor-pointer px-4 py-2 text-sm hover:bg-gray-100 hover:text-gray-900">
            <LogoutIcon
              className={classNames(
                "text-gray-500 group-hover:text-gray-700",
                "h-5 w-5 flex-shrink-0 ltr:mr-3 rtl:ml-3"
              )}
              aria-hidden="true"
            />
            {t("sign_out")}
          </a>
        </DropdownMenuItem>
      </DropdownMenuContent>
    </Dropdown>
  );
}