<?php
class ControllerExtensionPaymentLaybuy extends Controller {
	public function index() {
		$this->load->language('extension/payment/laybuy');

		$this->load->model('extension/payment/laybuy');

		$this->load->model('checkout/order');

		$data['heading_title'] = $this->language->get('heading_title');

		$data['text_plan_preview'] = $this->language->get('text_plan_preview');
		$data['text_payment'] = $this->language->get('text_payment');
		$data['text_due_date'] = $this->language->get('text_due_date');
		$data['text_amount'] = $this->language->get('text_amount');
		$data['text_downpayment'] = $this->language->get('text_downpayment');
		$data['text_today'] = $this->language->get('text_today');
		$data['text_delivery_msg'] = $this->language->get('text_delivery_msg');
		$data['text_fee_msg'] = $this->language->get('text_fee_msg');
		$data['text_month'] = $this->language->get('text_month');
		$data['text_loading'] = $this->language->get('text_loading');

		$data['entry_initial'] = $this->language->get('entry_initial');
		$data['entry_months'] = $this->language->get('entry_months');

		$data['button_confirm'] = $this->language->get('button_confirm');

		$data['action'] = $this->url->link('extension/payment/laybuy/postToLaybuy');

		$order_info = $this->model_checkout_order->getOrder($this->session->data['order_id']);

		$data['order_info'] = $order_info;

		$data['total'] = $order_info['total'];

		$data['currency_symbol_left'] = $this->currency->getSymbolLeft($this->session->data['currency']);

		$data['currency_symbol_right'] = $this->currency->getSymbolRight($this->session->data['currency']);

		$data['initial_payments'] = $this->model_extension_payment_laybuy->getInitialPayments();

		$data['months'] = $this->model_extension_payment_laybuy->getMonths();

		return $this->load->view('extension/payment/laybuy', $data);
	}

	public function postToLaybuy()	{
		$this->load->model('extension/payment/laybuy');

		$this->model_extension_payment_laybuy->log('Posting to Laybuy');

		if ($this->request->server['REQUEST_METHOD'] == 'POST') {
			$this->load->model('checkout/order');

			$order_info = $this->model_checkout_order->getOrder($this->session->data['order_id']);

			if ($order_info) {
				$this->model_extension_payment_laybuy->log('Order ID: ' . $order_info['order_id']);

				$data = array();

				$data['VERSION']      = '0.2';
				$data['MEMBER']       = $this->config->get('laybuys_membership_id');
				$data['RETURNURL']    = $this->url->link('extension/payment/laybuy/callback', '', true);
				$data['CANCELURL']    = $this->url->link('extension/payment/laybuy/cancel', '', true);
				$data['AMOUNT']       = round(floatval($order_info['total']), 2, PHP_ROUND_HALF_DOWN);
				$data['CURRENCY']     = $order_info['currency_code'];
				$data['INIT']         = (int)$this->request->post['INIT'];
				$data['MONTHS']       = (int)$this->request->post['MONTHS'];
				$data['MIND']         = ((int)$this->config->get('laybuy_min_deposit')) ? (int)$this->config->get('laybuy_min_deposit') : 20;
				$data['MAXD']         = ((int)$this->config->get('laybuy_max_deposit')) ? (int)$this->config->get('laybuy_max_deposit') : 50;
				$data['CUSTOM']       = $order_info['order_id'] . ':' . md5($this->config->get('laybuy_token'));
				$data['EMAIL']        = $order_info['email'];

				$data_string = '';

				foreach ($data as $param => $value) {
					$data_string .= $param . '=' . $value . '&';
				}

				$data_string = rtrim($data_string, '&');

				$this->model_extension_payment_laybuy->log('Data String: ' . $data_string);

				$this->model_extension_payment_laybuy->log('Gateway URL: ' . $this->config->get('laybuy_gateway_url'));

				$ch = curl_init();
				curl_setopt($ch, CURLOPT_URL, $this->config->get('laybuy_gateway_url'));
				curl_setopt($ch, CURLOPT_POST, true);
				curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
				curl_setopt($ch, CURLOPT_HEADER, false);
				curl_setopt($ch, CURLOPT_TIMEOUT, 30);
				curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
				$result = curl_exec($ch);
				if (curl_errno($ch)) {
					$this->model_extension_payment_laybuy->log('cURL error: ' . curl_errno($ch));
				}
				curl_close($ch);

				$result = json_decode($result, true);

				$this->model_extension_payment_laybuy->log('Response: ' . print_r($result, true));

			 	if (isset($result['ACK']) && isset($result['TOKEN']) && $result['ACK'] == 'SUCCESS') {
					$this->model_extension_payment_laybuy->log('Success response. Redirecting to PayPal.');

					$this->response->redirect($this->config->get('laybuy_gateway_url') . '?TOKEN=' . $result['TOKEN']);
				} else {
					$this->model_extension_payment_laybuy->log('Failure response. Redirecting to checkout/failure.');

					$this->response->redirect($this->url->link('checkout/failure', '', true));
				}
			} else {
				$this->model_extension_payment_laybuy->log('No matching order. Redirecting to checkout/failure.');

				$this->response->redirect($this->url->link('checkout/failure', '', true));
			}
		} else {
			$this->model_extension_payment_laybuy->log('No $_POST data. Redirecting to checkout/failure.');

			$this->response->redirect($this->url->link('checkout/failure', '', true));
		}
	}

	public function callback() {
		$this->load->model('extension/payment/laybuy');

		$this->model_extension_payment_laybuy->log('Receiving callback');

		if ($this->request->server['REQUEST_METHOD'] == 'POST' && isset($this->request->post['RESULT']) && $this->request->post['RESULT'] == 'SUCCESS') {
			$this->load->model('checkout/order');

			$custom = $this->request->post['CUSTOM'];

			$custom = explode(':', $custom);

			$order_id = $custom[0];

			$token = $custom[1];

			$this->model_extension_payment_laybuy->log('Received Token: ' . $token);

			$this->model_extension_payment_laybuy->log('Actual Token: ' . md5($this->config->get('laybuy_token')));

			if (hash_equals(md5($this->config->get('laybuy_token')), $token)) {
				$this->model_extension_payment_laybuy->log('Order ID: ' . $order_id);

				$order_info = $this->model_checkout_order->getOrder($order_id);

				if ($order_info) {
					$this->model_checkout_order->addOrderHistory($order_id, $this->config->get('laybuy_order_status_id_pending'));

					$transaction_report = $this->model_extension_payment_laybuy->prepareTransactionReport($this->request->post);

					$this->model_extension_payment_laybuy->addTransaction($transaction_report, 1);

					$this->model_extension_payment_laybuy->log('Success. Redirecting to checkout/success.');

					$this->response->redirect($this->url->link('checkout/success', '', true));
				} else {
					$this->model_extension_payment_laybuy->log('No matching order. Redirecting to checkout/failure.');

					$this->response->redirect($this->url->link('checkout/failure', '', true));
				}
			} else {
				$this->model_extension_payment_laybuy->log('Token does not match. Redirecting to checkout/failure.');

				$this->response->redirect($this->url->link('checkout/failure', '', true));
			}
		} elseif ($this->request->server['REQUEST_METHOD'] == 'POST' && isset($this->request->post['RESULT']) && $this->request->post['RESULT'] == 'FAILURE') {
			$this->model_extension_payment_laybuy->log('Failure Response: ' . $this->request->post);

			$this->model_extension_payment_laybuy->log('Redirecting to checkout/failure.');

			$this->response->redirect($this->url->link('checkout/failure', '', true));
		} else {
			$this->model_extension_payment_laybuy->log('Either no $_POST data or unknown response. Redirecting to checkout/failure.');

			$this->response->redirect($this->url->link('checkout/failure', '', true));
		}
	}

	public function cancel() {
		$this->load->model('extension/payment/laybuy');

		$this->model_extension_payment_laybuy->log('Transaction canceled by user. Redirecting to checkout/checkout.');

		$this->response->redirect($this->url->link('checkout/checkout', '', true));
	}

	public function reviseCallback() {
		$this->load->model('extension/payment/laybuy');

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

		$this->model_extension_payment_laybuy->log('Receiving callback');

		if ($this->request->server['REQUEST_METHOD'] == 'POST') {
			if (isset($this->request->post['RESULT']) && $this->request->post['RESULT'] == 'SUCCESS') {
				$this->load->model('checkout/order');

				$custom = $this->request->post['CUSTOM'];

				$custom = explode(':', $custom);

				$order_id = $custom[0];

				$token = $custom[1];

				$this->model_extension_payment_laybuy->log('Received Token: ' . $token);

				$this->model_extension_payment_laybuy->log('Actual Token: ' . md5($this->config->get('laybuy_token')));

				if (hash_equals(md5($this->config->get('laybuy_token')), $token)) {
					$this->model_extension_payment_laybuy->log('Order ID: ' . $order_id);

					$order_info = $this->model_checkout_order->getOrder($order_id);

					if ($order_info) {
						$response = $this->request->post;

						$this->model_extension_payment_laybuy->log('Response: ' . print_r($response, true));

						$revised_transaction_id = $response['MERCHANTS_REF_NO'];

						$revised_transaction = $this->model_extension_payment_laybuy->getRevisedTransaction($revised_transaction_id);

						$this->model_extension_payment_laybuy->log('Revised transaction: ' . print_r($revised_transaction, true));

						$status = 1;

						$current_date = date('Y-m-d h:i:s');

						if (!isset($response['DOWNPAYMENT']) && !$revised_transaction['payment_type']) {
							$this->model_extension_payment_laybuy->log('Buy-Now');

							$response['DOWNPAYMENT'] = 100;
							$response['MONTHS'] = 0;
							$response['DOWNPAYMENT_AMOUNT'] = $response['AMOUNT'];
							$response['PAYMENT_AMOUNTS'] = 0;
							$response['FIRST_PAYMENT_DUE'] = $current_date;
							$response['LAST_PAYMENT_DUE'] = $current_date;
							$response['PAYPAL_PROFILE_ID'] = '';

							$status = 5;

							$this->model_checkout_order->addOrderHistory($order_id, $this->config->get('laybuy_order_status_id_processing'), $this->language->get('text_comment'));
						} else {
							$this->model_extension_payment_laybuy->log('Lay-Buy');
						}

						$this->session->data['order_id'] = $order_id;

						$transaction_report = $this->model_extension_payment_laybuy->prepareTransactionReport($response);

						$transaction_report['order_id'] = $order_id;

						$this->model_extension_payment_laybuy->addTransaction($transaction_report, $status);

						$old_transaction = $this->model_extension_payment_laybuy->getTransaction($revised_transaction['laybuy_transaction_id']);

						$report_content = json_decode($old_transaction['report'], true);

						foreach ($report_content as &$array) {
							$array['status'] = str_replace('Pending', 'Canceled', $array['status']);
						}

						$report_content = json_encode($report_content);

						if ($old_transaction['paypal_profile_id']) {
							$this->model_extension_payment_laybuy->log('Canceling transaction');

							$data_string = 'mid=' . $this->config->get('laybuys_membership_id') . '&' . 'paypal_profile_id=' . $old_transaction['paypal_profile_id'];

							$this->model_extension_payment_laybuy->log('Data String: ' . $data_string);

							$ch = curl_init();
							$url = 'https://lay-buys.com/vtmob/deal5cancel.php';
							curl_setopt($ch, CURLOPT_URL, $url);
							curl_setopt($ch, CURLOPT_POST, true);
							curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
							curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
							curl_setopt($ch, CURLOPT_HEADER, false);
							curl_setopt($ch, CURLOPT_TIMEOUT, 30);
							curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
							$result = curl_exec($ch);
							if (curl_errno($ch)) {
								$this->model_extension_payment_laybuy->log('cURL error: ' . curl_errno($ch));
							}
							curl_close($ch);

							$this->model_extension_payment_laybuy->log('Response: ' . $result);

							if ($result == 'success') {
								$this->model_extension_payment_laybuy->log('Success');
							} else {
								$this->model_extension_payment_laybuy->log('Failure');
							}
						} else {
							$this->model_extension_payment_laybuy->log('Transaction has no paypal_profile_id');
						}

						$this->model_extension_payment_laybuy->updateTransaction($old_transaction['laybuy_transaction_id'], '51', $report_content, $old_transaction['transaction']);

						$this->model_extension_payment_laybuy->deleteRevisedTransaction($revised_transaction['laybuy_revise_request_id']);

						$this->response->redirect($this->url->link('checkout/success', '', true));
					} else {
						$this->model_extension_payment_laybuy->log('No matching order. Redirecting to checkout/failure.');

						$this->response->redirect($this->url->link('checkout/failure', '', true));
					}
				} else {
					$this->model_extension_payment_laybuy->log('Token does not match. Redirecting to checkout/failure.');

					$this->response->redirect($this->url->link('checkout/failure', '', true));
				}
			} else {
				$this->model_extension_payment_laybuy->log('No success response');

				$this->response->redirect($this->url->link('checkout/failure', '', true));
			}
		} else {
			$this->model_extension_payment_laybuy->log('No $_POST data');

			$this->response->redirect($this->url->link('checkout/failure', '', true));
		}
	}

	public function reviseCancel() {
		$this->load->model('extension/payment/laybuy');

		$this->model_extension_payment_laybuy->log('Revise canceled. Redirecting to checkout/checkout.');

		$this->response->redirect($this->url->link('checkout/checkout', '', true));
	}

	public function deleteOrder($route = '', $output = '', $order_id = 0, $order_status_id = 0) {
		$this->load->model('extension/payment/laybuy');

		if (isset($this->session->data['api_id'])) {
			$this->model_extension_payment_laybuy->log('Deleting order #' . $order_id);

			$this->model_extension_payment_laybuy->deleteTransactionByOrderId($order_id);
		} else {
			$this->model_extension_payment_laybuy->log('No API ID in session');
		}
	}

	public function cron() {
		$this->load->model('extension/payment/laybuy');

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

		$this->model_extension_payment_laybuy->log('Running cron');

		if (isset($this->request->get['token']) && hash_equals($this->config->get('laybuy_token'), $this->request->get['token'])) {
			$paypal_profile_id_array = $this->model_extension_payment_laybuy->getPayPalProfileIds();

			if ($paypal_profile_id_array) {
				$paypal_profile_ids = '';

				foreach ($paypal_profile_id_array as $profile_id) {
					$paypal_profile_ids .= $profile_id['paypal_profile_id'] . ',';
				}

				$paypal_profile_ids = rtrim($paypal_profile_ids, ',');

				$data_string = 'mid=' . $this->config->get('laybuys_membership_id') . '&' . 'profileIds=' . $paypal_profile_ids;

				$this->model_extension_payment_laybuy->log('Data String: ' . $data_string);

				$this->model_extension_payment_laybuy->log('API URL: ' . $this->config->get('laybuy_api_url'));

				$ch = curl_init();
				curl_setopt($ch, CURLOPT_URL, $this->config->get('laybuy_api_url'));
				curl_setopt($ch, CURLOPT_POST, true);
				curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
				curl_setopt($ch, CURLOPT_HEADER, false);
				curl_setopt($ch, CURLOPT_TIMEOUT, 30);
				curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
				$result = curl_exec($ch);
				if (curl_errno($ch)) {
					$this->model_extension_payment_laybuy->log('cURL error: ' . curl_errno($ch));
				}
				curl_close($ch);

				$results = json_decode($result, true);

				$this->model_extension_payment_laybuy->log('Response: ' . print_r($results, true));

				if ($results) {
					$this->load->model('checkout/order');

					foreach ($results as $laybuy_ref_id => $reports) {
						$status = $reports['status'];

						$report = $reports['report'];

						$transaction = array();

						$transaction = $this->model_extension_payment_laybuy->getTransactionByLayBuyRefId($laybuy_ref_id);

						$order_id = $transaction['order_id'];

						$paypal_profile_id = $transaction['paypal_profile_id'];

						$months = $transaction['months'];

						$report_content = array();

						$pending_flag = false;

						$next_payment_status = $this->language->get('text_status_1');

						foreach ($report as $month => $payment) {
							$payment['paymentDate'] = date('Y-m-d h:i:s', strtotime(str_replace('/', '-', $payment['paymentDate'])));
							$date = date($this->language->get('date_format_short'), strtotime($payment['paymentDate']));
							$next_payment_date = $payment['paymentDate'];

							if ($payment['type'] == 'd') {
								$report_content[] = array(
									'instalment'	=> 0,
									'amount'		=> $this->currency->format($payment['amount'], $transaction['currency']),
									'date'			=> $date,
									'pp_trans_id'	=> $payment['txnID'],
									'status'		=> $payment['paymentStatus']
								);
							} elseif ($payment['type'] == 'p') {
								$pending_flag = true;

								$report_content[] = array(
									'instalment'	=> $month,
									'amount'		=> $this->currency->format($payment['amount'], $transaction['currency']),
									'date'			=> $date,
									'pp_trans_id'	=> $payment['txnID'],
									'status'		=> $payment['paymentStatus']
								);

								$next_payment_status = $payment['paymentStatus'];
							}
						}

						if ($pending_flag) {
							$start_index = $month + 1;
						} else {
							$start_index = $month + 2;
						}

						if ($month < $months) {
							for ($month = 1; $month <= $months; $month++) {
								$next_payment_date = date("Y-m-d h:i:s", strtotime($next_payment_date . " +1 month"));
								$date = date($this->language->get('date_format_short'), strtotime($next_payment_date));

								$report_content[] = array(
									'instalment'	=> $month,
									'amount'		=> $this->currency->format($transaction['payment_amounts'], $transaction['currency']),
									'date'			=> $date,
									'pp_trans_id'	=> '',
									'status'		=> $next_payment_status
								);
							}
						}

						$report_content = json_encode($report_content);

						switch ($status) {
							case -1: // Cancel
								$this->model_extension_payment_laybuy->log('Transaction #' . $transaction['laybuy_transaction_id'] . ' canceled');
								$this->model_checkout_order->addOrderHistory($order_id, $this->config->get('laybuy_order_status_id_canceled'), $this->language->get('text_comment'), false, false);
								$this->model_extension_payment_laybuy->updateTransaction($transaction['laybuy_transaction_id'], '7', $report_content, $start_index);
								break;
							case 0: // Pending
								$this->model_extension_payment_laybuy->log('Transaction #' . $transaction['laybuy_transaction_id'] . ' still pending');
								$this->model_extension_payment_laybuy->updateTransaction($transaction['laybuy_transaction_id'], $transaction['status'], $report_content, $start_index);
								break;
							case 1: // Paid
								$this->model_extension_payment_laybuy->log('Transaction #' . $transaction['laybuy_transaction_id'] . ' paid');
								$this->model_checkout_order->addOrderHistory($order_id, $this->config->get('laybuy_order_status_id_processing'), $this->language->get('text_comment'), false, false);
								$this->model_extension_payment_laybuy->updateTransaction($transaction['laybuy_transaction_id'], '5', $report_content, $start_index);
								break;
						}
					}
				}
			} else {
				$this->model_extension_payment_laybuy->log('No PayPal Profile IDs to update');
			}

			$this->model_extension_payment_laybuy->updateCronRunTime();
		} else {
			$this->model_extension_payment_laybuy->log('Token does not match.');
		}
	}
}