export const dynamic = 'force-dynamic'

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

export async function GET(
  _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', 'supervisor'].includes(profile.role))
    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })

  const { data, error } = await supabase
    .from('incident_addenda')
    .select('id, body, created_at, author:users!author (name)')
    .eq('incident_id', id)
    .order('created_at', { ascending: true })

  if (error) return NextResponse.json({ error: 'Fetch failed' }, { status: 500 })
  return NextResponse.json(data ?? [])
}

export async function POST(
  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', 'supervisor'].includes(profile.role))
    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })

  const body: { body?: string } = await request.json().catch(() => ({}))
  const text = (body.body ?? '').trim()
  if (!text) return NextResponse.json({ error: 'body required' }, { status: 422 })
  if (text.length > 5000)
    return NextResponse.json({ error: 'body must be 5000 characters or fewer' }, { status: 422 })

  const { data: addendum, error } = await supabase
    .from('incident_addenda')
    .insert({ incident_id: id, author: user.id, body: text })
    .select('id')
    .single()

  if (error || !addendum) return NextResponse.json({ error: 'Insert failed' }, { status: 500 })

  await supabase.rpc('write_audit_log', {
    p_table_name: 'incident_addenda',
    p_record_id: addendum.id,
    p_action: 'INSERT',
    p_new_value: { incident_id: id, author: user.id, body: text },
  })

  return NextResponse.json({ id: addendum.id }, { status: 201 })
}