import { Box, Card, Chip, Table, TableBody, TableCell, TableHead, TableRow, Typography } from '@mui/material'
import { Trophy, CheckCircle2 } from 'lucide-react'
import { LABEL_SX, DATA_SX, CRITERION_ALIASES, getTitle, scoreBar } from './compareUtils'
import type { WeightingKey } from '../../domain/needBuilder'
import { MissingDataCell } from './CompareCell'
import type { UnifiedMatchResult } from '../../domain/unifiedResult'

interface Props {
  compareItems: UnifiedMatchResult[]
  relevantCriteria: Array<{ key: string; label: string; weight: number }>
  overallWinnerIdx: number
  activeNeed: { companyName: string }
}

export function CompareCriteriaCard({ compareItems, relevantCriteria, overallWinnerIdx, activeNeed }: Props) {
  return (
    <Card sx={{ mb: 3, overflow: 'hidden' }}>
      <Box sx={{ p: 2.5, borderBottom: '1px solid #e2e8f0', bgcolor: '#f8fafc', display: 'flex', alignItems: 'center', gap: 2 }}>
        <Trophy size={18} color="#d4920e" />
        <Box>
          <Typography variant="h6" sx={{ fontWeight: 700, lineHeight: 1.2 }}>Vergleich nach Suchkriterien</Typography>
          <Typography variant="caption" color="text.secondary">Basierend auf der Suche: {activeNeed.companyName}</Typography>
        </Box>
        {overallWinnerIdx !== -1 && (
          <Box sx={{ ml: 'auto', bgcolor: '#fffbeb', border: '1px solid #fbbf24', borderRadius: 2, px: 2, py: 1, display: 'flex', alignItems: 'center', gap: 1 }}>
            <Trophy size={16} color="#d4920e" />
            <Box>
              <Typography variant="caption" sx={{ color: '#92400e', fontWeight: 700, display: 'block', lineHeight: 1 }}>Gesamtsieger</Typography>
              <Typography variant="body2" sx={{ fontWeight: 800, color: '#7a4f00' }}>{getTitle(compareItems[overallWinnerIdx])}</Typography>
            </Box>
          </Box>
        )}
      </Box>
      <Box sx={{ overflowX: 'auto' }}>
        <Table sx={{ tableLayout: 'auto' }}>
          <TableHead>
            <TableRow sx={{ bgcolor: '#f8fafc' }}>
              <TableCell sx={{ ...LABEL_SX, bgcolor: '#f8fafc', fontSize: 11 }}>Kriterium</TableCell>
              {compareItems.map(item => (
                <TableCell key={item.matchId} sx={{ ...DATA_SX, bgcolor: '#f8fafc' }}>
                  <Typography variant="caption" sx={{ fontWeight: 700, color: '#152642' }} noWrap>
                    {getTitle(item)}
                  </Typography>
                </TableCell>
              ))}
            </TableRow>
          </TableHead>
          <TableBody>
            {relevantCriteria.map(({ key, label }) => {
              const allCriteria = (item: typeof compareItems[0]) =>
                item.match.allFactors ?? [...item.match.positiveFactors, ...item.match.negativeFactors]

              const factors = compareItems.map(item =>
                allCriteria(item).find(f => CRITERION_ALIASES[key as WeightingKey].some(a => a.toLowerCase() === f.criterion.toLowerCase()))
              )
              const numericScores = factors.map(f => f?.score ?? null)
              const presentScores = numericScores.filter((s): s is number => s !== null)
              const maxScore = presentScores.length > 0 ? Math.max(...presentScores) : 0
              const winnerIdx = compareItems.length > 1 && presentScores.length > 1 && numericScores.filter(s => s === maxScore).length === 1
                ? numericScores.indexOf(maxScore)
                : -1

              return (
                <TableRow key={key} hover>
                  <TableCell sx={LABEL_SX}>
                    <Typography variant="body2" sx={{ fontWeight: 600 }}>{label}</Typography>
                  </TableCell>
                  {factors.map((factor, idx) => (
                    <TableCell key={idx} sx={{ ...DATA_SX, bgcolor: idx === winnerIdx ? 'rgba(26,122,74,0.05)' : undefined }}>
                      {factor ? (
                        <Box>
                          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, mb: 0.5 }}>
                            {scoreBar(factor.score / 100)}
                            {idx === winnerIdx && (
                              <Chip label="Besser" size="small"
                                icon={<CheckCircle2 size={10} />}
                                sx={{ height: 18, fontSize: 9, bgcolor: '#f0fdf4', color: '#166534',
                                  '& .MuiChip-icon': { color: '#1a7a4a', ml: 0.5 },
                                  '& .MuiChip-label': { px: 0.75 } }} />
                            )}
                          </Box>
                          <Typography variant="caption" color="text.secondary"
                            sx={{ display: '-webkit-box', WebkitLineClamp: 2, WebkitBoxOrient: 'vertical', overflow: 'hidden', lineHeight: 1.4 }}>
                            {factor.explanation}
                          </Typography>
                        </Box>
                      ) : (
                        <MissingDataCell reason="Kein Score für dieses Kriterium" />
                      )}
                    </TableCell>
                  ))}
                </TableRow>
              )
            })}
          </TableBody>
        </Table>
      </Box>
    </Card>
  )
}