export const dynamic = 'force-dynamic'

import { NextRequest, NextResponse } from 'next/server'
import { createClient } from '@/lib/supabase/server'

interface TriageBody {
  severity: number
  is_fatality: boolean
  is_serious_bodily_injury: boolean
  is_dangerous_occurrence: boolean
  is_occupational_disease: boolean
  triage_notes: string | null
}

export async function PATCH(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  const { id } = await params
  const supabase = await createClient()

  const { data: { user }, error: authError } = await supabase.auth.getUser()
  if (authError || !user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })

  const { data: profile } = await supabase
    .from('users').select('role').eq('id', user.id).single()
  if (!profile || !['hse', 'admin'].includes(profile.role))
    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })

  const body: TriageBody = await request.json()
  if (body.severity < 1 || body.severity > 5)
    return NextResponse.json({ error: 'severity must be 1–5' }, { status: 422 })

  const { data: incident } = await supabase
    .from('incidents').select('status').eq('id', id).single()
  if (!incident) return NextResponse.json({ error: 'Not found' }, { status: 404 })
  if (incident.status !== 'reported')
    return NextResponse.json({ error: 'Incident is not in reported status' }, { status: 409 })

  const { error } = await supabase
    .from('incidents')
    .update({
      severity: body.severity,
      is_fatality: body.is_fatality,
      is_serious_bodily_injury: body.is_serious_bodily_injury,
      is_dangerous_occurrence: body.is_dangerous_occurrence,
      is_occupational_disease: body.is_occupational_disease,
      triage_notes: body.triage_notes ?? null,
      triaged_by: user.id,
      triaged_at: new Date().toISOString(),
      status: 'triaged',
    })
    .eq('id', id)

  if (error) return NextResponse.json({ error: 'Update failed' }, { status: 500 })

  await supabase.rpc('write_audit_log', {
    p_table_name: 'incidents',
    p_record_id: id,
    p_action: 'triage',
    p_new_value: { severity: body.severity, status: 'triaged', triaged_by: user.id },
  })

  return NextResponse.json({ ok: true })
}