export const dynamic = 'force-dynamic'

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

export async function GET() {
  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) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })

  let query = supabase
    .from('capa_actions')
    .select(`
      id, incident_id, root_cause_ref, description, owner_user_id, department,
      due_date, priority, status, completed_at, verified_by, verified_at, created_at,
      incidents (reference_no, incident_type),
      owner:users!owner_user_id (name, email)
    `)
    .order('due_date', { ascending: true })

  if (profile.role === 'supervisor' || profile.role === 'worker') {
    query = query.eq('owner_user_id', user.id)
  }

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

export async function POST(request: NextRequest) {
  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 = await request.json()
  const { incident_id, description, owner_user_id, department, due_date, priority, root_cause_ref } = body

  if (!incident_id || !description || !owner_user_id || !department || !due_date)
    return NextResponse.json({ error: 'Missing required fields' }, { status: 422 })

  const { data: capa, error } = await supabase
    .from('capa_actions')
    .insert({
      incident_id,
      description,
      owner_user_id,
      department,
      due_date,
      priority: priority ?? 'med',
      root_cause_ref: root_cause_ref ?? null,
    })
    .select('id')
    .single()

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

  await supabase.rpc('write_audit_log', {
    p_table_name: 'capa_actions',
    p_record_id: capa.id,
    p_action: 'created',
    p_new_value: { incident_id, description, owner_user_id, department, due_date },
  })

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