"use client";

import { useLocale } from "@calcom/lib/hooks/useLocale";
import { trpc } from "@calcom/trpc";
import classNames from "@calcom/ui/classNames";
import { SkeletonText } from "@calcom/ui/components/skeleton";

import { useInsightsBookingParameters } from "../../hooks/useInsightsBookingParameters";
import { ChartCard } from "../ChartCard";
import { KPICard } from "../KPICard";

export const BookingKPICards = () => {
  const { t } = useLocale();
  const insightsBookingParams = useInsightsBookingParameters();

  const { data, isSuccess, isPending } = trpc.viewer.insights.bookingKPIStats.useQuery(
    insightsBookingParams,
    {
      staleTime: 180000,
      refetchOnWindowFocus: false,
      trpc: {
        context: { skipBatch: true },
      },
    }
  );

  const eventCategories: {
    title: string;
    index: "created" | "completed" | "rescheduled" | "cancelled";
  }[] = [
    {
      title: t("events_created"),
      index: "created",
    },
    {
      title: t("events_completed"),
      index: "completed",
    },
    {
      title: t("events_rescheduled"),
      index: "rescheduled",
    },
    {
      title: t("events_cancelled"),
      index: "cancelled",
    },
  ];

  const performanceCategories: {
    title: string;
    index: "rating" | "no_show" | "no_show_guest" | "csat";
  }[] = [
    {
      title: t("event_ratings"),
      index: "rating",
    },
    {
      title: t("event_no_show"),
      index: "no_show",
    },
    {
      title: t("event_no_show_guest"),
      index: "no_show_guest",
    },
    {
      title: t("csat_score"),
      index: "csat",
    },
  ];

  if (isPending) {
    return (
      <LoadingKPICards eventCategories={eventCategories} performanceCategories={performanceCategories} />
    );
  }

  if (!isSuccess || !data) return null;

  return (
    <div className="space-y-4">
      <ChartCard title={t("events")}>
        <StatContainer>
          {eventCategories.map((item, index) => (
            <StatItem key={item.title} index={index}>
              <KPICard
                title={item.title}
                previousMetricData={data[item.index]}
                previousDateRange={data.previousRange}
              />
            </StatItem>
          ))}
        </StatContainer>
      </ChartCard>

      <ChartCard title={t("performance")}>
        <StatContainer>
          {performanceCategories.map((item, index) => (
            <StatItem key={item.title} index={index}>
              <KPICard
                title={item.title}
                previousMetricData={data[item.index]}
                previousDateRange={data.previousRange}
              />
            </StatItem>
          ))}
        </StatContainer>
      </ChartCard>
    </div>
  );
};

const LoadingKPICards = (props: {
  eventCategories: { title: string; index: string }[];
  performanceCategories: { title: string; index: string }[];
}) => {
  const { eventCategories, performanceCategories } = props;
  const { t } = useLocale();

  return (
    <div className="space-y-4">
      <ChartCard title={t("events")}>
        <StatContainer>
          {eventCategories.map((item, index) => (
            <StatItem key={item.title} index={index}>
              <div>
                <SkeletonText className="mb-2 h-4 w-24" />
                <div className="items-baseline justify-start space-x-3 truncate">
                  <SkeletonText className="h-8 w-16" />
                </div>
                <div className="mt-4 justify-start space-x-2">
                  <SkeletonText className="h-4 w-20" />
                </div>
              </div>
            </StatItem>
          ))}
        </StatContainer>
      </ChartCard>

      <ChartCard title={t("performance")}>
        <StatContainer>
          {performanceCategories.map((item, index) => (
            <StatItem key={item.title} index={index}>
              <div>
                <SkeletonText className="mb-2 h-4 w-24" />
                <div className="items-baseline justify-start space-x-3 truncate">
                  <SkeletonText className="h-8 w-16" />
                </div>
                <div className="mt-4 justify-start space-x-2">
                  <SkeletonText className="h-4 w-20" />
                </div>
              </div>
            </StatItem>
          ))}
        </StatContainer>
      </ChartCard>
    </div>
  );
};

// StatContainer: wraps the grid
function StatContainer({ children }: { children: React.ReactNode }) {
  return <div className="group grid grid-cols-1 sm:grid-cols-2 md:grid-cols-4">{children}</div>;
}

// StatItem: handles border logic
function StatItem({ index, children }: { index: number; children: React.ReactNode }) {
  return (
    <div
      className={classNames(
        "border-muted flex-1 p-4",
        index === 0 && "border-b sm:border-r md:border-b-0 md:border-r",
        index === 1 && "border-b sm:border-r-0 md:border-b-0 md:border-r",
        index === 2 && "border-b sm:border-b-0 sm:border-r md:border-b-0"
      )}>
      {children}
    </div>
  );
}