export const dynamic = 'force-dynamic'

import { notFound, redirect } from 'next/navigation'
import Link from 'next/link'
import { createClient } from '@/lib/supabase/server'
import { getSession } from '@/lib/auth/get-session'
import { VerifyForm } from '@/components/capa/verify-form'
import { CloseCapaButton } from '@/components/capa/close-capa-button'

interface Props {
  params: Promise<{ id: string }>
}

const PRIORITY_BADGE: Record<string, string> = {
  low: 'bg-gray-100 text-gray-600',
  med: 'bg-yellow-100 text-yellow-700',
  high: 'bg-red-100 text-red-700',
}

export default async function CapaDetailPage({ params }: Props) {
  const { id } = await params
  const session = await getSession()
  if (!session) redirect(`/login?redirect=/hse/capa/${id}`)

  const supabase = await createClient()

  const { data: capa } = await supabase
    .from('capa_actions')
    .select(`
      id, incident_id, root_cause_ref, description, department,
      due_date, priority, status, completed_at, verified_by, verified_at, created_at,
      owner_notes,
      incidents (reference_no, incident_type),
      owner:users!owner_user_id (name, email)
    `)
    .eq('id', id)
    .single()

  if (!capa) notFound()

  const isHse = session && ['hse', 'admin'].includes(session.role)
  const status = (capa as { status: string }).status

  return (
    <main className="max-w-2xl mx-auto px-4 py-6">
      <Link href="/hse/capa" className="text-sm text-blue-600 hover:underline mb-4 inline-block">
        ← CAPA Board
      </Link>

      <div className="bg-white rounded-xl shadow-sm p-5 mb-4 space-y-4">
        <div className="flex items-start justify-between">
          <div>
            <p className="text-xs text-gray-500 mb-1">
              Incident: {(capa.incidents as unknown as { reference_no: string | null } | null)?.reference_no ?? '—'}
            </p>
            <p className="text-gray-900 font-medium">{(capa as { description: string }).description}</p>
          </div>
          <span className={`px-2 py-1 rounded text-xs font-semibold ${PRIORITY_BADGE[(capa as { priority: string }).priority] ?? ''}`}>
            {(capa as { priority: string }).priority}
          </span>
        </div>

        <div className="grid grid-cols-2 gap-3 text-sm">
          <div>
            <p className="text-xs text-gray-500">Owner</p>
            <p className="text-gray-800">{(capa.owner as unknown as { name: string } | null)?.name ?? '—'}</p>
          </div>
          <div>
            <p className="text-xs text-gray-500">Department</p>
            <p className="text-gray-800">{(capa as { department: string }).department}</p>
          </div>
          <div>
            <p className="text-xs text-gray-500">Due Date</p>
            <p className="text-gray-800">{(capa as { due_date: string }).due_date}</p>
          </div>
          <div>
            <p className="text-xs text-gray-500">Status</p>
            <p className="text-gray-800 capitalize">{status.replace(/_/g, ' ')}</p>
          </div>
          {(capa as { owner_notes: string | null }).owner_notes && (
            <div className="col-span-2">
              <p className="text-xs text-gray-500">Owner Notes</p>
              <p className="text-sm text-gray-800 whitespace-pre-wrap">
                {(capa as { owner_notes: string }).owner_notes}
              </p>
            </div>
          )}
        </div>

        {(capa as { root_cause_ref: string | null }).root_cause_ref && (
          <div>
            <p className="text-xs text-gray-500">Root Cause Reference</p>
            <p className="text-sm text-gray-800">{(capa as { root_cause_ref: string }).root_cause_ref}</p>
          </div>
        )}

        {(capa as { completed_at: string | null }).completed_at && (
          <p className="text-xs text-gray-500">
            Completed: {new Date((capa as { completed_at: string }).completed_at).toLocaleString('en-MY', { timeZone: 'Asia/Kuala_Lumpur' })}
          </p>
        )}
      </div>

      {isHse && status === 'pending_verification' && (
        <VerifyForm capaId={id} />
      )}

      {isHse && status === 'verified' && (
        <CloseCapaButton capaId={id} />
      )}
    </main>
  )
}