'use client'

/**
 * CompliancePanel — 合規狀態面板 (不含 AppLayout)
 * Sprint 5R: 從 /compliance/page.tsx 抽取
 * @updated 2026-04-09 Claude Opus 4.6 Asia/Taipei
 */

import { useState, useEffect } from 'react'
import { useTranslations } from 'next-intl'
import { IwoooSReadOnlyBridge } from '@/components/security/iwooos-read-only-bridge'

const API_BASE = process.env.NEXT_PUBLIC_API_URL ?? ''

interface IncidentSummary {
  total_incidents: number
  resolved_rate: number
  severity_distribution: Array<{ severity: string; count: number }>
}

interface AutoRepairStats {
  approved_playbooks: number
  high_quality_playbooks: number
  total_executions: number
  overall_success_rate: number
  auto_repair_eligible: boolean
}

export function CompliancePanel() {
  const t = useTranslations('compliance')
  const [summary, setSummary] = useState<IncidentSummary | null>(null)
  const [repairStats, setRepairStats] = useState<AutoRepairStats | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)

  useEffect(() => {
    Promise.all([
      fetch(`${API_BASE}/api/v1/stats/incidents/summary?days=30`).then(r => r.ok ? r.json() : null).catch(() => null),
      fetch(`${API_BASE}/api/v1/auto-repair/stats`).then(r => r.ok ? r.json() : null).catch(() => null),
    ])
      .then(([s, r]) => {
        if (s) setSummary(s)
        if (r) setRepairStats(r)
      })
      .catch(() => setError('load_failed'))
      .finally(() => setLoading(false))
  }, [])

  const cardStyle = { background: '#fff', border: '0.5px solid #e0ddd4', borderRadius: 12, padding: '16px 18px' }
  const sevColors: Record<string, string> = { P0: '#cc2200', P1: '#F59E0B', P2: '#4A90D9', P3: '#22C55E' }

  return (
    <div style={{ padding: '24px', background: '#f5f4ed', minHeight: '100%' }}>
      <div style={{ marginBottom: '20px' }}>
        <h1 style={{ fontSize: 18, fontWeight: 700, color: '#141413', margin: 0 }}>{t('title')}</h1>
        <p style={{ fontSize: 12, color: '#87867f', margin: '4px 0 0' }}>{t('subtitle')}</p>
      </div>

      <IwoooSReadOnlyBridge />

      {loading ? (
        <div style={{ padding: '32px', textAlign: 'center', color: '#87867f', fontSize: 13 }}>{t('loading')}</div>
      ) : error ? (
        <div style={{ ...cardStyle, textAlign: 'center', color: '#cc2200', fontSize: 13 }}>{t('error')}</div>
      ) : (
        <>
          <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fill, minmax(170px, 1fr))', gap: 12, marginBottom: 16 }}>
            {summary && <>
              <div style={cardStyle}>
                <div style={{ fontSize: 11, color: '#87867f', marginBottom: 4, textTransform: 'uppercase', letterSpacing: '0.05em' }}>{t('totalIncidents')}</div>
                <div style={{ fontSize: 24, fontWeight: 700, color: '#141413' }}>{summary.total_incidents}</div>
                <div style={{ fontSize: 11, color: '#87867f', marginTop: 4 }}>30 days</div>
              </div>
              <div style={cardStyle}>
                <div style={{ fontSize: 11, color: '#87867f', marginBottom: 4, textTransform: 'uppercase', letterSpacing: '0.05em' }}>{t('resolvedRate')}</div>
                <div style={{ fontSize: 24, fontWeight: 700, color: summary.resolved_rate >= 80 ? '#22C55E' : summary.resolved_rate >= 50 ? '#F59E0B' : '#cc2200' }}>
                  {summary.resolved_rate.toFixed(1)}%
                </div>
              </div>
            </>}
            {repairStats && <>
              <div style={cardStyle}>
                <div style={{ fontSize: 11, color: '#87867f', marginBottom: 4, textTransform: 'uppercase', letterSpacing: '0.05em' }}>{t('approvedPlaybooks')}</div>
                <div style={{ fontSize: 24, fontWeight: 700, color: '#141413' }}>{repairStats.approved_playbooks}</div>
                <div style={{ fontSize: 11, color: '#87867f', marginTop: 4 }}>{t('highQualityPlaybooks')}: {repairStats.high_quality_playbooks}</div>
              </div>
              <div style={cardStyle}>
                <div style={{ fontSize: 11, color: '#87867f', marginBottom: 4, textTransform: 'uppercase', letterSpacing: '0.05em' }}>{t('executionSuccessRate')}</div>
                <div style={{ fontSize: 24, fontWeight: 700, color: repairStats.overall_success_rate >= 0.8 ? '#22C55E' : '#F59E0B' }}>
                  {(repairStats.overall_success_rate * 100).toFixed(1)}%
                </div>
              </div>
              <div style={cardStyle}>
                <div style={{ fontSize: 11, color: '#87867f', marginBottom: 4, textTransform: 'uppercase', letterSpacing: '0.05em' }}>{t('autoRepairEligible')}</div>
                <div style={{ fontSize: 18, fontWeight: 700, color: repairStats.auto_repair_eligible ? '#22C55E' : '#cc2200' }}>
                  {repairStats.auto_repair_eligible ? t('yes') : t('no')}
                </div>
              </div>
            </>}
          </div>

          {summary && summary.severity_distribution.length > 0 && (
            <div style={{ background: '#fff', border: '0.5px solid #e0ddd4', borderRadius: 12, overflow: 'hidden' }}>
              <div style={{ fontSize: 13, fontWeight: 700, padding: '10px 14px', borderBottom: '0.5px solid #e0ddd4', background: '#faf9f3', color: '#141413' }}>
                Severity Distribution
              </div>
              <div style={{ display: 'flex', gap: 0 }}>
                {summary.severity_distribution.map(({ severity, count }) => (
                  <div key={severity} style={{ flex: 1, padding: '12px 14px', borderRight: '0.5px solid #f0ede4', textAlign: 'center' }}>
                    <div style={{ fontSize: 11, fontWeight: 700, color: sevColors[severity] ?? '#87867f', marginBottom: 4 }}>{severity}</div>
                    <div style={{ fontSize: 20, fontWeight: 700, color: '#141413' }}>{count}</div>
                  </div>
                ))}
              </div>
            </div>
          )}
        </>
      )}
    </div>
  )
}