OpenCart 🇺🇦

$this->language->load('payment/klarna_account');

$status = true;

$klarna_account = $this->config->get('klarna_account');

if (!isset($klarna_account[$address['iso_code_3']])) {
	$status = false;
} elseif (!$klarna_account[$address['iso_code_3']]['status']) {
	$status = false;
}

if ($status) {
	$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone_to_geo_zone WHERE geo_zone_id = '" . (int)$klarna_account[$address['iso_code_3']]['geo_zone_id'] . "' AND country_id = '" . (int)$address['country_id'] . "' AND (zone_id = '" . (int)$address['zone_id'] . "' OR zone_id = '0')");

	if ($klarna_account[$address['iso_code_3']]['total'] > 0 && $klarna_account[$address['iso_code_3']]['total'] > $total) {
		$status = false;
	} elseif (!$klarna_account[$address['iso_code_3']]['geo_zone_id']) {
		$status = true;
	} elseif ($query->num_rows) {
		$status = true;
	} else {
		$status = false;
	}

	// Maps countries to currencies
	$country_to_currency = array(
		'NOR' => 'NOK',
		'SWE' => 'SEK',
		'FIN' => 'EUR',
		'DNK' => 'DKK',
		'DEU' => 'EUR',
		'NLD' => 'EUR'
	);

	if (!isset($country_to_currency[$address['iso_code_3']]) || !$this->currency->has($country_to_currency[$address['iso_code_3']])) {
		$status = false;
	} 

	if ($address['iso_code_3'] == 'NLD' && $this->currency->has('EUR') && $this->currency->format($total, 'EUR', '', false) > 250.00) {
		$status = false;
	}			
}

$payment_option = array();

if ($status) {
	$total = $this->currency->format($total, $country_to_currency[$address['iso_code_3']], '', false);

	$pclasses = $this->config->get('klarna_account_pclasses');

	if (isset($pclasses[$address['iso_code_3']])) {
		$pclasses = $pclasses[$address['iso_code_3']];
	} else {
		$pclasses = array();
	}

	foreach ($pclasses as $pclass) {
		// 0 - Campaign
		// 1 - Account
		// 2 - Special
		// 3 - Fixed
		if (!in_array($pclass['type'], array(0, 1, 3))) {
			continue;
		}

		if ($pclass['type'] == 2) {
			$monthly_cost = -1;
		} else {
			if ($total < $pclass['minamount']) {
				continue;
			}

			if ($pclass['type'] == 3) {
				continue;
			} else {
				$sum = $total;

				$lowest_payment = $this->getLowestPaymentAccount($address['iso_code_3']);
				$monthly_cost = 0;

				$monthly_fee = $pclass['invoicefee'];
				$start_fee = $pclass['startfee'];

				$sum += $start_fee;

				$base = ($pclass['type'] == 1);

				$minimum_payment = ($pclass['type'] === 1) ? $this->getLowestPaymentAccount($address['iso_code_3']) : 0;

				if ($pclass['months'] == 0) {
					$payment = $sum;
				} elseif ($pclass['interestrate'] == 0) {
					$payment = $sum / $pclass['months'];
				} else {
					$interest_rate = $pclass['interestrate'] / (100.0 * 12);

					$payment = $sum * $interest_rate / (1 - pow((1 + $interest_rate), -$pclass['months']));
				}

				$payment += $monthly_fee;

				$balance = $sum;
				$pay_data = array();

				$months = $pclass['months'];

				while (($months != 0) && ($balance > 0.01)) {
					$interest = $balance * $pclass['interestrate'] / (100.0 * 12);
					$new_balance = $balance + $interest + $monthly_fee;

					if ($minimum_payment >= $new_balance || $payment >= $new_balance) {
						$pay_data[] = $new_balance;
						break;
					}

					$new_payment = max($payment, $minimum_payment);

					if ($base) {
						$new_payment = max($new_payment, $balance / 24.0 + $monthly_fee + $interest);
					}

					$balance = $new_balance - $new_payment;

					$pay_data[] = $new_payment;

					$months -= 1;
				}

				$monthly_cost = round(isset($pay_data[0]) ? ($pay_data[0]) : 0, 2);

				if ($monthly_cost < 0.01) {
					continue;
				}

				if ($pclass['type'] == 1 && $monthly_cost < $lowest_payment) {
					$monthly_cost = $lowest_payment;
				}

				if ($pclass['type'] == 0 && $monthly_cost < $lowest_payment) {
					continue;
				}
			}
		}

		$payment_option[$pclass['id']]['monthly_cost'] = $monthly_cost;
		$payment_option[$pclass['id']]['pclass_id'] = $pclass['id'];
		$payment_option[$pclass['id']]['months'] = $pclass['months'];
	}
}

if (!$payment_option) {
	$status = false;
}

$sort_order = array(); 

foreach ($payment_option as $key => $value) {
	$sort_order[$key] = $value['monthly_cost'];
}

array_multisort($sort_order, SORT_ASC, $payment_option);	

if ($address['company']) {
	$status = false;
}

$method = array();

if ($status) {
	$method = array(
		'code'       => 'klarna_account',
		'title'      => sprintf($this->language->get('text_pay_month'), $this->currency->format($this->currency->convert($payment_option[0]['monthly_cost'], $country_to_currency[$address['iso_code_3']], $this->currency->getCode()), 1, 1), $klarna_account[$address['iso_code_3']]['merchant'], strtolower($address['iso_code_2'])),
		'sort_order' => $klarna_account[$address['iso_code_3']]['sort_order']
	);
}

return $method;

switch ($country) {
	case 'SWE':
		$amount = 50.0;
		break;
	case 'NOR':
		$amount = 95.0;
		break;
	case 'FIN':
		$amount = 8.95;
		break;
	case 'DNK':
		$amount = 89.0;
		break;
	case 'DEU':
	case 'NLD':
		$amount = 6.95;
		break;
	default:
		$log = new Log('klarna_account.log');
		$log->write('Unknown country ' . $country);

		$amount = null;
		break;
}

return $amount;