'use client'

/**
 * ResultSummary — Audit-Kopf: Titel + check_id + 4 KPI-Kacheln über den
 * Dokument-Tabs. Co-Pilot-Ton (grün wenn gut, rot nur bei echten offenen
 * Punkten, gelb für „zu prüfen"). Rechnet aus result.results (Haupt-Engine).
 */

import React from 'react'

import type { CheckItem, DocResult } from './ChecklistView'

type Tone = 'gray' | 'green' | 'red' | 'amber'

const TONE: Record<Tone, string> = {
  gray: 'text-gray-800',
  green: 'text-green-700',
  red: 'text-red-700',
  amber: 'text-amber-700',
}

function Tile({ label, value, tone }: { label: string; value: React.ReactNode; tone: Tone }) {
  return (
    <div className="border border-gray-200 rounded-lg p-3 bg-white">
      <div className={`text-2xl font-semibold leading-none ${TONE[tone]}`}>{value}</div>
      <div className="text-xs text-gray-500 mt-1.5">{label}</div>
    </div>
  )
}

function isReview(c: CheckItem): boolean {
  return c.severity === 'INFO' && !c.passed && !c.skipped
}

export function ResultSummary({ results }: { results: any }) {
  const docs: DocResult[] = results.results || []
  const company = results.extracted_profile?.company_profile?.companyName as string | undefined

  let offen = 0
  let zuPruefen = 0
  let konform = 0
  let checked = 0
  for (const d of docs) {
    if (d.error) continue
    checked++
    const l1Score = d.checks.filter(c => (c.level ?? 1) === 1 && c.severity !== 'INFO')
    const l1Failed = l1Score.filter(c => !c.passed).length
    const l2Failed = d.checks.filter(
      c => (c.level ?? 1) === 2 && !c.skipped && !c.passed && c.severity !== 'INFO',
    ).length
    offen += l1Failed + l2Failed
    zuPruefen += d.checks.filter(isReview).length
    if (l1Failed === 0 && (d.completeness_pct ?? 0) === 100) konform++
  }

  return (
    <div className="space-y-3">
      <div>
        <h2 className="text-lg font-semibold text-gray-900">
          Compliance-Check{company ? `: ${company}` : ''}
        </h2>
        <p className="text-xs text-gray-500 mt-0.5">
          {results.check_id && (
            <>ID <code className="bg-gray-100 px-1 rounded">{results.check_id}</code> · </>
          )}
          {docs.length} Dokument{docs.length !== 1 ? 'e' : ''} geprüft
        </p>
      </div>
      <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
        <Tile label="Dokumente" value={docs.length} tone="gray" />
        <Tile
          label="Konform"
          value={`${konform}/${checked || docs.length}`}
          tone={checked > 0 && konform === checked ? 'green' : 'gray'}
        />
        <Tile
          label="Offene Pflichtangaben"
          value={offen}
          tone={offen > 0 ? 'red' : 'green'}
        />
        <Tile
          label="Zu prüfen"
          value={zuPruefen}
          tone={zuPruefen > 0 ? 'amber' : 'gray'}
        />
      </div>
    </div>
  )
}