import { useState } from "react";

import { WEBAPP_URL } from "@calcom/lib/constants";
import { useLocale } from "@calcom/lib/hooks/useLocale";
import isCalcom from "@calcom/lib/isCalcom";
import { trpc } from "@calcom/trpc/react";
import { Alert, Button, EmptyScreen, Icon } from "@calcom/ui";

import SkeletonLoaderTeamList from "./SkeletonloaderTeamList";
import TeamList from "./TeamList";

export function TeamsListing() {
  const { t } = useLocale();
  const [errorMessage, setErrorMessage] = useState("");

  const { data, isLoading } = trpc.viewer.teams.list.useQuery(undefined, {
    onError: (e) => {
      setErrorMessage(e.message);
    },
  });

  const teams = data?.filter((m) => m.accepted) || [];
  const invites = data?.filter((m) => !m.accepted) || [];

  const features = [
    {
      icon: <Icon.FiUsers className="h-5 w-5 text-gray-700" />,
      title: t("collective_scheduling"),
      description: t("make_it_easy_to_book"),
    },
    {
      icon: <Icon.FiRefreshCcw className="h-5 w-5 text-gray-700" />,
      title: t("round_robin"),
      description: t("find_the_best_person"),
    },
    {
      icon: <Icon.FiUserPlus className="h-5 w-5 text-gray-700" />,
      title: t("fixed_round_robin"),
      description: t("add_one_fixed_attendee"),
    },
  ];

  return (
    <>
      {!!errorMessage && <Alert severity="error" title={errorMessage} />}
      {invites.length > 0 && (
        <div className="mb-4">
          <h1 className="mb-2 text-lg font-medium">{t("open_invitations")}</h1>
          <TeamList teams={invites} />
        </div>
      )}
      {isLoading && <SkeletonLoaderTeamList />}
      {!teams.length && !isLoading && (
        <>
          {isCalcom ? (
            <div className="max-w-[1118px]">
              <div
                className="flex w-full justify-between overflow-hidden rounded-lg pt-4 pb-10 md:min-h-[295px] md:pt-10"
                style={{
                  background: "url(/team-banner-background.jpg)",
                  backgroundSize: "cover",
                  backgroundRepeat: "no-repeat",
                }}>
                <div className="mt-3 px-14">
                  <h1 className="font-cal text-3xl">{t("calcom_is_better_with_team")}</h1>
                  <p className="my-4 max-w-sm text-gray-600">{t("add_your_team_members")}</p>
                  <div className="space-y-2 sm:space-x-2">
                    <Button color="primary" href={`${WEBAPP_URL}/settings/teams/new`}>
                      {t("create_team")}
                    </Button>
                    <Button href="https://go.cal.com/teams-video" target="_blank" color="secondary">
                      {t("learn_more")}
                    </Button>
                  </div>
                </div>
              </div>
              <div className="mt-6 grid-cols-3 md:grid md:gap-6">
                {features.map((feature) => (
                  <div key={feature.title} className="mb-6 min-h-[180px] w-full rounded-md bg-gray-50 p-8">
                    {feature.icon}
                    <h2 className="font-cal mt-4 text-lg">{feature.title}</h2>
                    <p className="text-gray-700">{feature.description}</p>
                  </div>
                ))}
              </div>
            </div>
          ) : (
            <EmptyScreen
              Icon={Icon.FiUsers}
              headline={t("no_teams")}
              description={t("no_teams_description")}
              buttonRaw={
                <Button color="secondary" href={`${WEBAPP_URL}/settings/teams/new`}>
                  {t("create_team")}
                </Button>
              }
            />
          )}
        </>
      )}
      {teams.length > 0 && <TeamList teams={teams} />}
    </>
  );
}