'use server'

import { createClient } from '@/utils/supabase/server'
import { revalidatePath } from 'next/cache'

export async function submitLeaveRequest(formData: FormData) {
  const supabase = await createClient()

  const { data: { user } } = await supabase.auth.getUser()
  if (!user) return { error: 'Oturum bulunamadı.' }

  const startDate = formData.get('start_date') as string
  const endDate = formData.get('end_date') as string
  const reason = formData.get('reason') as string
  const companyId = formData.get('company_id') as string // which company they are requesting leave for

  if (!startDate || !endDate || !companyId || !reason) {
    return { error: 'Tüm alanları doldurunuz.' }
  }

  // Find their employee record for this specific company
  const { data: employeeData, error: empError } = await supabase
    .from('employees')
    .select('id')
    .eq('user_id', user.id)
    .eq('company_id', companyId)
    .single()

  if (empError || !employeeData) {
    return { error: 'Seçili şirket için personel kaydınız bulunamadı.' }
  }

  const { error } = await supabase
    .from('leave_requests')
    .insert([{
      employee_id: employeeData.id,
      start_date: startDate,
      end_date: endDate,
      reason: reason,
      status: 'pending' // default
    }])

  if (error) {
    return { error: 'İzin talebi oluşturulurken hata: ' + error.message }
  }

  revalidatePath('/leave-requests')
  return { success: true }
}

export async function updateLeaveStatus(id: string, newStatus: 'approved' | 'rejected') {
  const supabase = await createClient()

  const { error } = await supabase
    .from('leave_requests')
    .update({ status: newStatus })
    .eq('id', id)

  if (error) {
    return { error: 'Durum güncellenirken hata oluştu: ' + error.message }
  }

  revalidatePath('/leave-requests')
  return { success: true }
}