class ApplianceChangeController
{
    public static function get($key)
    {
        global $ovdb;

        $key = $key;

        $results = $ovdb->perform("SELECT
      date_entered,
      reason,
      items_changed,
      base_plate_sku,
      pouch_sku,
      entered_by,
      DATEDIFF(date_entered, @prev) AS DaysDifference,
      @prev := date_entered as DateChanged
    FROM
      gastrotrack_vault.appliance_change,
      (SELECT @prev := NULL) AS vars
      WHERE entered_by = '$key' AND ItemsChanged = 'Appliance'
      ORDER BY date_entered ASC;");

        // if (is_array($results)) {
        //     foreach ($results as &$result) {
        //         $result['data'] = json_decode($result['data']);
        //     }
        // }

        echo Response::json($results, 'No appliance changes could be detected.');

        die;
    }

    public static function post()
    {
        global $ovdb;

        if (!page::post('weight') && !page::post('username')) {
            echo Response::json(null, 'This post request did not include all mandatory parameters.');
            die;
        }

        $reason = page::post('weight');
        $item = page::post('item');
        $pouchSKU = page::post('pouchSKU');
        $bpSKU = page::post('bpSKU');
        $username = page::post('username');
        //$data = rtrim(json_encode(page::post("data")));

        $applianceRan = false;
        $pouchRan = false;
        $bpRan = false;
        // does a record exist?
        //if(!self::doesRecordExist($id, $factory)){
            // No record exists for this app+factory. Insert it.
      if ($item == 'Pouch') {
          $applianceRan = self::_applianceChange($reason, $item, null, $pouchSKU, $username);
          $pouchRan = self::_pouchReduce($pouchSKU, $username);
          $bpRan = true;
      } else {
          $applianceRan = self::_applianceChange($reason, $item, $bpSKU, $pouchSKU, $username);
          $pouchRan = self::_pouchReduce($pouchSKU, $username);
          $bpRan = self::_bpReduce($bpSKU, $username);
      }
        // } else {
        // 	$results = $ovdb->insert("UPDATE freepoint.applications SET factory = '$factory', data = '$data' WHERE id = '$id' AND factory = '$factory'");
        // }

        if ($applianceRan && $pouchRan && $bpRan) {
            echo Response::json(array('id' => 'success', 'message' => 'The weight data has been saved.'));
        } else {
            echo Response::json(array('id' => 'error', 'message' => 'The weight data could not be saved.'));
        }
    }

    private static function _applianceChange($reason, $item, $bpSKU, $pouchSKU, $username)
    {
        global $ovdb;

        // get all users that match this email (should only be one)
        $results = $ovdb->perform("INSERT INTO
      gastrotrack_vault.appliance_change (date_entered, reason, items_changed, base_plate_sku, pouch_sku, entered_by )
    VALUES (DATE_ADD(NOW(),INTERVAL 3 HOUR), '$reason', '$item', '$bpSKU', '$pouchSKU',DATE_ADD(NOW(),INTERVAL 3 HOUR), '$username');");

        // check if there are results and return the first or false
      if (is_object($results)) {
          return true;
      } else {
          return false;
      }
    }

    private static function _pouchReduce($pouchSKU, $username)
    {
        global $ovdb;

        // get all users that match this email (should only be one)
        $results = $ovdb->perform("INSERT INTO gastrotrack_vault.product_stock (sku, units,
        date_entered, entered_by )
        VALUES ('$pouchSKU',-1,DATE_ADD(NOW(),INTERVAL 3 HOUR),'$username');");

        // check if there are results and return the first or false
      if (is_object($results)) {
          return true;
      } else {
          return false;
      }
    }

    private static function _bpReduce($bpSKU, $username)
    {
        global $ovdb;

        // get all users that match this email (should only be one)
        $results = $ovdb->perform("INSERT INTO gastrotrack_vault.product_stock (sku, units,
      date_entered,entered_by )
      VALUES ('$bpSKU',-1,DATE_ADD(NOW(),INTERVAL 3 HOUR),'$username');");

        // check if there are results and return the first or false
      if (is_object($results)) {
          return true;
      } else {
          return false;
      }
    }
}