import { useState, useEffect } from 'react'
import { useAuth } from '../context/AuthContext'

const ACTION_LABELS = {
  connexion: 'Connexion',
  changement_mot_de_passe: 'Changement mot de passe',
  recommandation_ajout: 'Recommandation ajoutée',
  recommandation_modification: 'Recommandation modifiée',
  recommandation_suppression: 'Recommandation supprimée',
  invite_ajout: 'Invité ajouté',
  invite_modification: 'Invité modifié',
  invite_suppression: 'Invité supprimé',
  invite_email_envoye: 'Email invitation envoyé',
  candidature_demarrage: 'Candidature démarrée',
  candidature_refus: 'Candidature refusée',
  absence_ajout: 'Absence ajoutée',
  absence_suppression: 'Absence supprimée',
}

export default function AdminLogs() {
  const { authFetch } = useAuth()
  const [logs, setLogs] = useState([])
  const [page, setPage] = useState(1)
  const [pages, setPages] = useState(1)
  const [loading, setLoading] = useState(true)

  const load = async (p) => {
    setLoading(true)
    setPage(p)
    try {
      const r = await authFetch(`/api/activity-logs?page=${p}&limit=50`)
      if (r.ok) { const d = await r.json(); setLogs(d.logs); setPages(d.pages) }
    } catch {} finally { setLoading(false) }
  }

  useEffect(() => { load(1) }, [])

  return (
    <div className="space-y-4">
      <h2 className="text-xl font-bold text-gray-800">Journal d'activité</h2>

      {loading ? (
        <p className="text-center text-gray-400 py-8">Chargement...</p>
      ) : logs.length === 0 ? (
        <p className="text-center text-gray-400 py-8">Aucune activité enregistrée</p>
      ) : (
        <div className="bg-white rounded-xl shadow-sm overflow-x-auto">
          <table className="w-full text-sm">
            <thead>
              <tr className="bg-gray-50 text-left text-xs text-gray-500 uppercase">
                <th className="px-4 py-3">Date</th>
                <th className="px-4 py-3">Utilisateur</th>
                <th className="px-4 py-3">Action</th>
                <th className="px-4 py-3">Détails</th>
              </tr>
            </thead>
            <tbody className="divide-y">
              {logs.map((log) => (
                <tr key={log.id} className="hover:bg-gray-50">
                  <td className="px-4 py-2.5 text-gray-500 whitespace-nowrap">
                    {new Date(log.created_at).toLocaleDateString('fr-FR', { day: '2-digit', month: '2-digit', year: 'numeric', hour: '2-digit', minute: '2-digit' })}
                  </td>
                  <td className="px-4 py-2.5 whitespace-nowrap font-medium">{log.user_prenom} {log.user_nom}</td>
                  <td className="px-4 py-2.5 whitespace-nowrap">
                    <span className="bg-blue-100 text-blue-800 text-xs font-medium px-2 py-0.5 rounded">
                      {ACTION_LABELS[log.action] || log.action}
                    </span>
                  </td>
                  <td className="px-4 py-2.5 text-gray-600 max-w-xs truncate">
                    {log.details ? (() => { try { return JSON.stringify(JSON.parse(log.details), null, 1).replace(/[{}"]/g, '').replace(/,/g, ', ').trim() } catch { return log.details } })() : '-'}
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      )}

      {pages > 1 && (
        <div className="flex justify-center gap-2">
          {Array.from({ length: pages }, (_, i) => i + 1).map((p) => (
            <button key={p} onClick={() => load(p)}
              className={`w-8 h-8 rounded-lg text-sm font-medium ${p === page ? 'bg-blue-900 text-white' : 'bg-white text-gray-600 border hover:bg-gray-50'}`}>
              {p}
            </button>
          ))}
        </div>
      )}
    </div>
  )
}