'use client'
import { useQuery, gql } from '@/lib/graphql/hooks'
import { use, useEffect } from 'react'
import Link from 'next/link'
import { TeamFlag } from '@/components/team-flag'
import { MatchCard } from '@/components/match-card'

const TEAM_QUERY = gql`
  query Team($slug: String!) {
    team(slug: $slug) {
      id name iso2 slug fifaCode continent confederation
      stats { appearances wins draws losses goalsFor goalsAgainst goalDiff titles winPct }
    }
  }
`
const TEAM_MATCHES_QUERY = gql`
  query TeamMatches($teamName: String!) {
    topScorers(limit: 100) {
      playerName goals penalties ownGoals tournaments
      team { name iso2 }
    }
  }
`

interface TeamData {
  id: number; name: string; iso2?: string | null; slug: string
  fifaCode?: string | null; continent?: string | null; confederation?: string | null
  stats?: {
    appearances: number; wins: number; draws: number; losses: number
    goalsFor: number; goalsAgainst: number; goalDiff: number; titles: number; winPct: number
  } | null
}

export default function TeamPage({ params }: { params: Promise<{ slug: string }> }) {
  const { slug } = use(params)
  const { data: teamData, loading } = useQuery(TEAM_QUERY, { variables: { slug } })
  const team: TeamData | null = teamData?.team ?? null

  useEffect(() => {
    document.title = team ? `${team.name} · World Cup` : 'Team · World Cup'
  }, [team])

  // Load all scorers to filter by team
  const { data: scorerData } = useQuery(gql`
    query TeamScorers {
      topScorers(limit: 200) {
        playerName goals penalties ownGoals tournaments
        team { id name iso2 }
      }
    }
  `)

  const allScorers = scorerData?.topScorers ?? []
  const teamScorers = team ? allScorers.filter((s: { team?: { id: number } | null }) => s.team?.id === team.id).slice(0, 15) : []

  if (loading && !teamData) {
    return <div className="max-w-[1200px] mx-auto px-7 py-10 text-[#2a5c35]">Loading team…</div>
  }

  if (!team) {
    return <div className="max-w-[1200px] mx-auto px-7 py-10 text-[#2a5c35]">Team not found.</div>
  }

  const s = team.stats
  const played = (s?.wins ?? 0) + (s?.draws ?? 0) + (s?.losses ?? 0)
  const maxScorer = Math.max(...teamScorers.map((sc: { goals: number }) => sc.goals), 1)

  return (
    <div className="max-w-[1200px] mx-auto px-7 py-10 pb-16">
      {/* Hero */}
      <div className="pitch-grid rounded-2xl p-8 mb-8" style={{
        background: 'linear-gradient(145deg,#0a1a0e,#0d2416)',
        border: '1px solid rgba(34,197,94,0.2)',
      }}>
        <div className="flex items-center gap-6 flex-wrap">
          <TeamFlag name={team.name} iso2={team.iso2} size="xl" />
          <div>
            <h1 className="font-['Bebas_Neue'] text-[56px] text-[#22c55e] leading-none">{team.name}</h1>
            <div className="flex gap-3 mt-2 flex-wrap">
              {team.fifaCode && <span className="text-[11px] text-[#2a5c35] font-bold tracking-wider">{team.fifaCode}</span>}
              {team.confederation && <span className="text-[11px] text-[#2a5c35]">{team.confederation}</span>}
              {team.continent && <span className="text-[11px] text-[#2a5c35]">{team.continent}</span>}
              {(s?.titles ?? 0) > 0 && (
                <span className="text-[11px] text-[#22c55e] font-bold">
                  {Array.from({ length: s?.titles ?? 0 }).map(() => '🏆').join('')} {s?.titles} title{(s?.titles ?? 0) !== 1 ? 's' : ''}
                </span>
              )}
            </div>
          </div>
        </div>
      </div>

      <div className="grid grid-cols-1 lg:grid-cols-[1fr_260px] gap-8">
        <div>
          {/* Stats grid */}
          {s && (
            <div className="mb-8">
              <h2 className="text-[11px] text-[#2a5c35] font-bold tracking-[0.14em] uppercase mb-4">World Cup Record</h2>
              <div className="grid grid-cols-2 sm:grid-cols-4 gap-3 mb-3">
                {[
                  { label: 'Appearances', value: s.appearances },
                  { label: 'Matches', value: played },
                  { label: 'Win %', value: `${s.winPct}%` },
                  { label: 'Goals For', value: s.goalsFor },
                ].map(item => (
                  <div key={item.label} className="rounded-xl p-4" style={{ background: '#0a1810', border: '1px solid rgba(34,197,94,0.12)' }}>
                    <div className="text-[9px] text-[#2a5c35] tracking-[0.1em] uppercase mb-1.5">{item.label}</div>
                    <div className="font-['Bebas_Neue'] text-3xl text-[#22c55e]">{item.value}</div>
                  </div>
                ))}
              </div>
              <div className="rounded-xl overflow-hidden" style={{ background: '#0a1810', border: '1px solid rgba(34,197,94,0.12)' }}>
                <div className="grid px-4 py-2.5 text-[9px] text-[#2a5c35] tracking-[0.1em] uppercase"
                  style={{ gridTemplateColumns: '1fr 44px 44px 44px 60px 60px 60px' }}>
                  <span>Team</span><span className="text-center">W</span><span className="text-center">D</span>
                  <span className="text-center">L</span><span className="text-center">GF</span>
                  <span className="text-center">GA</span><span className="text-center">GD</span>
                </div>
                <div className="grid px-4 py-3 border-t items-center"
                  style={{ gridTemplateColumns: '1fr 44px 44px 44px 60px 60px 60px', borderColor: 'rgba(34,197,94,0.06)' }}>
                  <div className="flex items-center gap-2">
                    <TeamFlag name={team.name} iso2={team.iso2} size="sm" />
                    <span className="text-sm text-[#dff5e8]">{team.name}</span>
                  </div>
                  {[s.wins, s.draws, s.losses, s.goalsFor, s.goalsAgainst].map((v, i) => (
                    <span key={i} className="text-center text-sm text-[#4a7a55]">{v}</span>
                  ))}
                  <span className="text-center text-sm text-[#4a7a55]">{s.goalDiff >= 0 ? `+${s.goalDiff}` : s.goalDiff}</span>
                </div>
              </div>
            </div>
          )}
        </div>

        {/* Sidebar: top scorers */}
        <div>
          {teamScorers.length > 0 && (
            <div>
              <h2 className="text-[11px] text-[#2a5c35] font-bold tracking-[0.14em] uppercase mb-4">Top Scorers</h2>
              <div className="rounded-2xl overflow-hidden" style={{ background: '#0a1810', border: '1px solid rgba(34,197,94,0.15)' }}>
                {teamScorers.map((sc: { playerName: string; goals: number; penalties: number; tournaments: number }, i: number) => (
                  <Link key={sc.playerName} href={`/players/${encodeURIComponent(sc.playerName)}`}>
                    <div className="flex items-center gap-2.5 px-3.5 py-2.5 border-b hover:bg-[rgba(34,197,94,0.03)] cursor-pointer"
                      style={{ borderColor: 'rgba(34,197,94,0.06)', background: i === 0 ? 'rgba(34,197,94,0.04)' : undefined }}>
                      <span className="text-[10px] text-[#2a5c35] w-4 text-right font-bold flex-shrink-0">{i + 1}</span>
                      <div className="flex-1 min-w-0">
                        <div className="text-[13px] font-semibold text-[#dff5e8] truncate">{sc.playerName}</div>
                        <div className="text-[10px] text-[#2a5c35]">
                          {sc.tournaments} WC{sc.tournaments !== 1 ? 's' : ''}{sc.penalties > 0 ? ` · ${sc.penalties}P` : ''}
                        </div>
                      </div>
                      <div className="w-10 h-1 rounded-full flex-shrink-0" style={{ background: 'rgba(34,197,94,0.1)' }}>
                        <div className="h-full rounded-full bg-[#22c55e]" style={{ width: `${(sc.goals / maxScorer) * 100}%` }} />
                      </div>
                      <span className="font-['Bebas_Neue'] text-xl text-[#22c55e] flex-shrink-0">{sc.goals}</span>
                    </div>
                  </Link>
                ))}
              </div>
            </div>
          )}
        </div>
      </div>
    </div>
  )
}