export const dynamic = 'force-dynamic'

import { notFound } from 'next/navigation'
import { createClient } from '@/lib/supabase/server'
import { IncidentDetail, type Incident } from '@/components/incidents/incident-detail'
import { IncidentHeader } from '@/components/incidents/incident-header'
import { SimilarIncidentsPanel } from '@/components/incidents/similar-incidents-panel'
import { ClosurePanel } from '@/components/incidents/closure-panel'
import { InvestigationPanel } from '@/components/incidents/investigation-panel'

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

export default async function HseIncidentDetailPage({ params }: Props) {
  const { id } = await params
  const supabase = await createClient()

  const { data: incident, error } = await supabase
    .from('incidents')
    .select(`
      id, reference_no, incident_type, description, severity, status,
      injury_involved, asset_involved, medical_status, lost_days, type_details,
      is_fatality, is_serious_bodily_injury, is_dangerous_occurrence, is_occupational_disease,
      reported_at, closed_at,
      sites (id, name),
      zones (id, name),
      reporter:users!reported_by (id, name, email),
      evidence_files (id, stage, file_url, file_type, uploaded_at)
    `)
    .eq('id', id)
    .eq('evidence_files.deleted', false)
    .single()

  if (error || !incident) notFound()

  const status = (incident as { status: string }).status

  const { data: investigation } = await supabase
    .from('investigations')
    .select(`
      id, method, five_why_steps, fishbone_categories,
      findings_text, root_cause_summary, alcohol_test_result,
      witness_statement_refs, completed_at,
      investigator:users!investigator_id (name, email)
    `)
    .eq('incident_id', id)
    .maybeSingle()

  const needsJkkp = Boolean(
    (incident as { is_fatality?: boolean }).is_fatality ||
    (incident as { is_serious_bodily_injury?: boolean }).is_serious_bodily_injury ||
    (incident as { is_dangerous_occurrence?: boolean }).is_dangerous_occurrence ||
    ((incident as { lost_days?: number | null }).lost_days ?? 0) >= 4
  )

  return (
    <>
      <IncidentHeader
        incidentId={id}
        referenceNo={(incident as { reference_no: string | null }).reference_no}
        status={status}
        backHref="/hse/incidents"
        canTriage={status === 'reported'}
        canInvestigate={status === 'triaged'}
        canAddCapa={(['investigating', 'capa_pending'] as string[]).includes(status)}
      />
      <main className="max-w-3xl mx-auto px-4 py-6">
        <IncidentDetail incident={incident as unknown as Incident} />

        {investigation && (
          <InvestigationPanel investigation={investigation as never} />
        )}

        {needsJkkp && (
          <div className="mt-4 flex gap-3 flex-wrap">
            <a
              href={`/ims/api/incidents/${id}/jkkp-pdf?form=jkkp6`}
              target="_blank"
              className="inline-block bg-gray-800 text-white rounded-lg px-4 py-2 text-sm font-semibold hover:bg-gray-900"
            >
              Download JKKP 6 (PDF)
            </a>
            <a
              href={`/ims/api/incidents/${id}/jkkp-pdf?form=jkkp7`}
              target="_blank"
              className="inline-block bg-gray-600 text-white rounded-lg px-4 py-2 text-sm font-semibold hover:bg-gray-700"
            >
              Download JKKP 7 (PDF)
            </a>
          </div>
        )}
        <ClosurePanel incidentId={id} status={status} canClose canAddAddenda />
        <SimilarIncidentsPanel incidentId={id} />
      </main>
    </>
  )
}