import { Stack, Text, Group, Box, Divider, Paper } from "@mantine/core";
import { usePlayerHeadToHead } from "@/features/matches/queries";
import { useMemo, useEffect, useState, Suspense } from "react";
import { CrownIcon } from "@phosphor-icons/react";
import MatchList from "@/features/matches/components/match-list";
import PlayerHeadToHeadSkeleton from "./player-head-to-head-skeleton";

interface PlayerHeadToHeadSheetProps {
  player1Id: string;
  player1Name: string;
  player2Id: string;
  player2Name: string;
  isOpen?: boolean;
}

const PlayerHeadToHeadContent = ({
  player1Id,
  player1Name,
  player2Id,
  player2Name,
  isOpen = true,
}: PlayerHeadToHeadSheetProps) => {
  const [shouldFetch, setShouldFetch] = useState(false);

  useEffect(() => {
    if (isOpen && !shouldFetch) {
      setShouldFetch(true);
    }
  }, [isOpen, shouldFetch]);

  const { data: matches, isLoading } = usePlayerHeadToHead(player1Id, player2Id, shouldFetch);

  const stats = useMemo(() => {
    if (!matches || matches.length === 0) {
      return {
        player1Wins: 0,
        player2Wins: 0,
        player1CupsFor: 0,
        player2CupsFor: 0,
        player1CupsAgainst: 0,
        player2CupsAgainst: 0,
        player1AvgMargin: 0,
        player2AvgMargin: 0,
      };
    }

    let player1Wins = 0;
    let player2Wins = 0;
    let player1CupsFor = 0;
    let player2CupsFor = 0;
    let player1CupsAgainst = 0;
    let player2CupsAgainst = 0;
    let player1TotalWinMargin = 0;
    let player2TotalWinMargin = 0;

    matches.forEach((match) => {
      const isPlayer1Home = match.home?.players?.some((p) => p.id === player1Id);
      const player1Cups = isPlayer1Home ? match.home_cups : match.away_cups;
      const player2Cups = isPlayer1Home ? match.away_cups : match.home_cups;

      if (player1Cups > player2Cups) {
        player1Wins++;
        player1TotalWinMargin += (player1Cups - player2Cups);
      } else if (player2Cups > player1Cups) {
        player2Wins++;
        player2TotalWinMargin += (player2Cups - player1Cups);
      }

      player1CupsFor += player1Cups;
      player2CupsFor += player2Cups;
      player1CupsAgainst += player2Cups;
      player2CupsAgainst += player1Cups;
    });

    const player1AvgMargin =
      player1Wins > 0 ? player1TotalWinMargin / player1Wins : 0;
    const player2AvgMargin =
      player2Wins > 0 ? player2TotalWinMargin / player2Wins : 0;

    return {
      player1Wins,
      player2Wins,
      player1CupsFor,
      player2CupsFor,
      player1CupsAgainst,
      player2CupsAgainst,
      player1AvgMargin,
      player2AvgMargin,
    };
  }, [matches, player1Id]);

  if (isLoading) {
    return (
      <Stack p="md" gap="md">
        <Text size="sm" c="dimmed" ta="center">
          Loading...
        </Text>
      </Stack>
    );
  }

  if (!matches || matches.length === 0) {
    return (
      <Stack p="md" gap="md">
        <Text size="sm" c="dimmed" ta="center">
          These players have not faced each other yet.
        </Text>
      </Stack>
    );
  }

  const totalMatches = stats.player1Wins + stats.player2Wins;
  const leader =
    stats.player1Wins > stats.player2Wins
      ? player1Name
      : stats.player2Wins > stats.player1Wins
      ? player2Name
      : null;

  return (
    <Stack gap="md">
      <Paper p="md" withBorder radius="md">
        <Stack gap="sm">
          <Group justify="center" gap="xs">
            <Text size="lg" fw={700}>
              {player1Name}
            </Text>
            <Text size="sm" c="dimmed">
              vs
            </Text>
            <Text size="lg" fw={700}>
              {player2Name}
            </Text>
          </Group>

          <Group justify="center" gap="lg">
            <Stack gap={0} align="center">
              <Text size="xl" fw={700}>
                {stats.player1Wins}
              </Text>
              <Text size="xs" c="dimmed">
                {player1Name}
              </Text>
            </Stack>
            <Text size="md" c="dimmed">
              -
            </Text>
            <Stack gap={0} align="center">
              <Text size="xl" fw={700}>
                {stats.player2Wins}
              </Text>
              <Text size="xs" c="dimmed">
                {player2Name}
              </Text>
            </Stack>
          </Group>

          {leader && (
            <Group justify="center" gap="xs">
              <CrownIcon size={16} weight="fill" color="gold" />
              <Text size="xs" c="dimmed">
                {leader} leads the series
              </Text>
            </Group>
          )}

          {!leader && totalMatches > 0 && (
            <Text size="xs" c="dimmed" ta="center">
              Series is tied
            </Text>
          )}
        </Stack>
      </Paper>

      <Stack gap={0}>
        <Text size="sm" fw={600} px="md" mb="xs">
          Stats Comparison
        </Text>

        <Paper withBorder>
          <Stack gap={0}>
            <Group justify="space-between" px="md" py="sm">
              <Group gap="xs">
                <Text size="sm" fw={600}>
                  {stats.player1CupsFor}
                </Text>
                <Text size="xs" c="dimmed">
                  cups
                </Text>
              </Group>
              <Text size="xs" fw={500}>
                Total Cups
              </Text>
              <Group gap="xs">
                <Text size="xs" c="dimmed">
                  cups
                </Text>
                <Text size="sm" fw={600}>
                  {stats.player2CupsFor}
                </Text>
              </Group>
            </Group>
            <Divider />

            <Group justify="space-between" px="md" py="sm">
              <Group gap="xs">
                <Text size="sm" fw={600}>
                  {totalMatches > 0
                    ? (stats.player1CupsFor / totalMatches).toFixed(1)
                    : "0.0"}
                </Text>
                <Text size="xs" c="dimmed">
                  avg
                </Text>
              </Group>
              <Text size="xs" fw={500}>
                Avg Cups/Match
              </Text>
              <Group gap="xs">
                <Text size="xs" c="dimmed">
                  avg
                </Text>
                <Text size="sm" fw={600}>
                  {totalMatches > 0
                    ? (stats.player2CupsFor / totalMatches).toFixed(1)
                    : "0.0"}
                </Text>
              </Group>
            </Group>
            <Divider />

            <Group justify="space-between" px="md" py="sm">
              <Group gap="xs">
                <Text size="sm" fw={600}>
                  {!isNaN(stats.player1AvgMargin)
                    ? stats.player1AvgMargin.toFixed(1)
                    : "0.0"}
                </Text>
                <Text size="xs" c="dimmed">
                  margin
                </Text>
              </Group>
              <Text size="xs" fw={500}>
                Avg Win Margin
              </Text>
              <Group gap="xs">
                <Text size="xs" c="dimmed">
                  margin
                </Text>
                <Text size="sm" fw={600}>
                  {!isNaN(stats.player2AvgMargin)
                    ? stats.player2AvgMargin.toFixed(1)
                    : "0.0"}
                </Text>
              </Group>
            </Group>
          </Stack>
        </Paper>
      </Stack>

      <Stack gap="xs">
        <Text size="sm" fw={600} px="md">
          Match History ({totalMatches})
        </Text>
        <MatchList matches={matches} hideH2H />
      </Stack>
    </Stack>
  );
};

const PlayerHeadToHeadSheet = (props: PlayerHeadToHeadSheetProps) => {
  return (
    <Suspense fallback={<PlayerHeadToHeadSkeleton />}>
      <PlayerHeadToHeadContent {...props} />
    </Suspense>
  );
};

export default PlayerHeadToHeadSheet;
