<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Migration_Simplify_supplier_invoice_status extends CI_Migration
{
 public function up()
 {
  if(!$this->db->table_exists('supplier_invoices'))return;
  $this->db->query("ALTER TABLE supplier_invoices MODIFY status ENUM('draft','submitted','approved','verified','posted','partial','paid','cancelled','reversed') NOT NULL DEFAULT 'verified'");
  $this->db->query("UPDATE supplier_invoices SET status='verified' WHERE status IN('draft','submitted','approved')");
  $this->db->query("UPDATE supplier_invoices SET status='partial' WHERE status='posted' AND balance>0");
  $this->db->query("UPDATE supplier_invoices SET status='paid',balance=0 WHERE status='posted' AND balance<=0");
  $this->db->query("ALTER TABLE supplier_invoices MODIFY status ENUM('verified','partial','paid','cancelled','reversed') NOT NULL DEFAULT 'verified'");
 }

 public function down()
 {
  if(!$this->db->table_exists('supplier_invoices'))return;
  $this->db->query("ALTER TABLE supplier_invoices MODIFY status ENUM('draft','submitted','approved','verified','posted','partial','paid','cancelled','reversed') NOT NULL DEFAULT 'draft'");
  $this->db->query("UPDATE supplier_invoices SET status='approved' WHERE status='verified'");
  $this->db->query("UPDATE supplier_invoices SET status='posted' WHERE status='partial' AND paid_amount<=0");
  $this->db->query("ALTER TABLE supplier_invoices MODIFY status ENUM('draft','submitted','approved','posted','partial','paid','cancelled','reversed') NOT NULL DEFAULT 'draft'");
 }
}