import { Box, Tabs, TabList, TabPanels, Tab, TabPanel, VStack, HStack, Image, Text, Skeleton, Badge } from '@chakra-ui/react';
import { useQuery } from '@tanstack/react-query';
import React from 'react';
import { facrApi } from '../../services/facr/facrApi';
import { usePublicSettings } from '../../hooks/usePublicSettings';
import { getCompetitionAliasesPublic, CompetitionAlias } from '../../services/competitionAliases';
import { TeamLogo } from '../common/TeamLogo';
import { sortCategoriesWithOrder } from '../../utils/categorySort';
import '../../styles/logos.css';

const Row: React.FC<{ d: string; h: string; hid?: string; hl?: string; a: string; aid?: string; al?: string; s?: string; clubName?: string }> = ({ d, h, hid, hl, a, aid, al, s, clubName }) => (
  <HStack justify="space-between" borderRadius="lg" p={3} bg="white" boxShadow="sm">
    <Text w="140px" fontSize="sm" color="gray.600">{d}</Text>
    <HStack flex={1} justify="flex-end" spacing={4}>
      <HStack minW="40%" justify="flex-end" spacing={2}>
        <Text noOfLines={1} textAlign="right" flex={1}>{h}</Text>
        <Box className="logo-container" w="28px" h="28px">
          <TeamLogo
            teamId={hid}
            teamName={h}
            facrLogo={hl}
            size="custom"
            boxSize="28px"
          />
        </Box>
      </HStack>
      <HStack minW="60px" justify="center" spacing={2}>
        <Text fontWeight="bold" textAlign="center">{s || '-:-'}</Text>
        {(() => {
          if (!s || !clubName) return null;
          const m = s.match(/^(\d+)\s*[:\-]\s*(\d+)$/);
          if (!m) return null;
          const hG = parseInt(m[1], 10), aG = parseInt(m[2], 10);
          const norm = (x: string) => String(x||'').normalize('NFD').replace(/[\u0300-\u036f]/g,'').replace(/\s+/g,' ').trim().toLowerCase();
          const strip = (x: string) => norm(x).replace(/\b(mestsky|m\.?f\.?k\.?|mfk|tj|sk|sokol|fotbalovy|fotbalový|fotbalovy\s+klub|fotbalovy\s+klub)\b/g,'').replace(/\s+/g,' ').trim();
          const ourHome = (() => { const A = strip(h); const B = strip(clubName); return A && B && (A===B || A.endsWith(B) || B.endsWith(A)); })();
          const ourAway = (() => { const A = strip(a); const B = strip(clubName); return A && B && (A===B || A.endsWith(B) || B.endsWith(A)); })();
          if (!ourHome && !ourAway) return null;
          if (hG === aG) return <Badge colorScheme="blue" variant="subtle">Remíza</Badge>;
          const our = ourHome ? hG : aG; const opp = ourHome ? aG : hG;
          return our > opp ? <Badge colorScheme="green" variant="subtle">Výhra</Badge> : <Badge colorScheme="red" variant="subtle">Prohra</Badge>;
        })()}
      </HStack>
      <HStack minW="40%" spacing={2}>
        <Box className="logo-container" w="28px" h="28px">
          <TeamLogo
            teamId={aid}
            teamName={a}
            facrLogo={al}
            size="custom"
            boxSize="28px"
          />
        </Box>
        <Text noOfLines={1} flex={1}>{a}</Text>
      </HStack>
    </HStack>
  </HStack>
);

const CompetitionMatches: React.FC = () => {
  const { data: settings } = usePublicSettings();
  const clubId = settings?.club_id;
  const clubType = settings?.club_type || 'football';
  const { data, isLoading } = useQuery({
    queryKey: ['facr-club', clubId, clubType],
    queryFn: () => facrApi.getClub(clubId!, clubType as any),
    enabled: !!clubId,
  });
  // Load competition aliases
  const [aliases, setAliases] = React.useState<Record<string, { alias: string; original_name?: string; display_order?: number }>>({});
  React.useEffect(() => {
    let mounted = true;
    (async () => {
      try {
        const list: CompetitionAlias[] = await getCompetitionAliasesPublic();
        if (!mounted) return;
        const map: Record<string, { alias: string; original_name?: string; display_order?: number }> = {};
        (list || []).forEach((a) => { if (a?.code && a?.alias) map[a.code] = { alias: a.alias, original_name: a.original_name, display_order: a.display_order }; });
        setAliases(map);
      } catch {}
    })();
    return () => { mounted = false; };
  }, []);

  // Precompute sorted competitions safely (must be before any early returns to keep hooks order stable)
  const competitions = data?.competitions ?? [];
  const sortedCompetitions = React.useMemo(() => {
    const arr = Array.isArray(competitions) ? competitions : [];
    return sortCategoriesWithOrder(
      arr.map(c => ({
        ...c,
        name: aliases[c.code]?.alias || aliases[c.id]?.alias || c.name,
        alias: aliases[c.code]?.alias || aliases[c.id]?.alias,
        display_order: (aliases[c.code]?.display_order) ?? (aliases[c.id]?.display_order),
      }))
    );
  }, [competitions, aliases]);

  if (isLoading) return <Skeleton height="200px" />;
  
  if (!clubId) {
    return (
      <Box p={4} bg="yellow.50" borderRadius="md" borderWidth="1px" borderColor="yellow.200">
        <Text color="gray.700">
          Pro zobrazení zápasů je potřeba nastavit klub v administraci (Nastavení → Základní údaje).
        </Text>
      </Box>
    );
  }
  
  if (!data || !data.competitions || data.competitions.length === 0) {
    return (
      <Box p={4} bg="gray.50" borderRadius="md" borderWidth="1px" borderColor="gray.200">
        <Text color="gray.600">
          Žádné soutěže ani zápasy nejsou k dispozici pro vybraný klub.
        </Text>
      </Box>
    );
  }

  // Sort competitions by age (Muži first, then U19, U17, etc.) and respect custom order (computed above)

  return (
    <Box>
      <Tabs variant="soft-rounded" colorScheme="blue" isFitted>
        <TabList>
          {sortedCompetitions.map((c) => {
            const label = c.alias || c.name;
            return <Tab key={c.id}>{label}</Tab>;
          })}
        </TabList>
        <TabPanels>
          {sortedCompetitions.map((c) => (
            <TabPanel key={c.id} px={0}>
              <VStack align="stretch" spacing={3}>
                {(c.matches || []).slice(0, 6).map((m, idx) => (
                  <Row key={m.match_id || idx} d={m.date_time} h={m.home} hid={m.home_id} hl={m.home_logo_url} a={m.away} aid={m.away_id} al={m.away_logo_url} s={m.score} clubName={data.name} />
                ))}
                {(c.matches || []).length === 0 && (
                  <Text color="gray.500">Žádné zápasy k dispozici.</Text>
                )}
              </VStack>
            </TabPanel>
          ))}
        </TabPanels>
      </Tabs>
    </Box>
  );
};

export default CompetitionMatches;
