<?php
class ModelExtensionPaymentPPProIframe extends Model {

    public function install() {
        $this->db->query("
			CREATE TABLE IF NOT EXISTS `" . DB_PREFIX . "paypal_iframe_order` (
			  `paypal_iframe_order_id` int(11) NOT NULL AUTO_INCREMENT,
			  `order_id` int(11) NOT NULL,
			  `date_added` DATETIME NOT NULL,
			  `date_modified` DATETIME NOT NULL,
			  `capture_status` ENUM('Complete','NotComplete') DEFAULT NULL,
			  `currency_code` CHAR(3) NOT NULL,
			  `authorization_id` VARCHAR(30) NOT NULL,
			  `total` DECIMAL( 10, 2 ) NOT NULL,
			  PRIMARY KEY (`paypal_iframe_order_id`)
			) ENGINE=MyISAM DEFAULT COLLATE=utf8_general_ci;");

        $this->db->query("
			CREATE TABLE IF NOT EXISTS `" . DB_PREFIX . "paypal_iframe_order_transaction` (
			  `paypal_iframe_order_transaction_id` int(11) NOT NULL AUTO_INCREMENT,
			  `paypal_iframe_order_id` int(11) NOT NULL,
			  `transaction_id` CHAR(20) NOT NULL,
			  `parent_id` CHAR(20) NOT NULL,
			  `date_added` DATETIME NOT NULL,
			  `note` VARCHAR(255) NOT NULL,
			  `msgsubid` CHAR(38) NOT NULL,
			  `receipt_id` CHAR(20) NOT NULL,
			  `payment_type` ENUM('none','echeck','instant', 'refund', 'void') DEFAULT NULL,
			  `payment_status` CHAR(20) NOT NULL,
			  `pending_reason` CHAR(50) NOT NULL,
			  `transaction_entity` CHAR(50) NOT NULL,
			  `amount` DECIMAL( 10, 2 ) NOT NULL,
			  `debug_data` TEXT NOT NULL,
			  `call_data` TEXT NOT NULL,
			  PRIMARY KEY (`paypal_iframe_order_transaction_id`)
			) ENGINE=MyISAM DEFAULT COLLATE=utf8_general_ci;");
    }

    public function uninstall() {
        $this->db->query("DROP TABLE IF EXISTS `" . DB_PREFIX . "paypal_iframe_order_transaction`;");
        $this->db->query("DROP TABLE IF EXISTS `" . DB_PREFIX . "paypal_iframe_order`;");
    }

    private function getTransactions($paypal_iframe_order_id) {
        $qry = $this->db->query("SELECT `ot`.*, ( SELECT count(`ot2`.`paypal_iframe_order_id`) FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` `ot2` WHERE `ot2`.`parent_id` = `ot`.`transaction_id` ) AS `children` FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` `ot` WHERE `paypal_iframe_order_id` = '" . (int)$paypal_iframe_order_id . "'");

        if ($qry->num_rows) {
            return $qry->rows;
        } else {
            return false;
        }
    }

    public function getTotalCaptured($paypal_iframe_order_id) {
        $qry = $this->db->query("SELECT SUM(`amount`) AS `amount` FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` WHERE `paypal_iframe_order_id` = '" . (int)$paypal_iframe_order_id . "' AND `pending_reason` != 'authorization' AND (`payment_status` = 'Partially-Refunded' OR `payment_status` = 'Completed' OR `payment_status` = 'Pending') AND `transaction_entity` = 'payment'");

        return $qry->row['amount'];
    }

    public function getTotalRefunded($paypal_iframe_order_id) {
        $qry = $this->db->query("SELECT SUM(`amount`) AS `amount` FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` WHERE `paypal_iframe_order_id` = '" . (int)$paypal_iframe_order_id . "' AND `payment_status` = 'Refunded'");

        return $qry->row['amount'];
    }

    public function getTotalRefundedTransaction($transaction_id) {
        $qry = $this->db->query("SELECT SUM(`amount`) AS `amount` FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` WHERE `parent_id` = '" . $this->db->escape($transaction_id) . "' AND `payment_type` = 'refund'");

        return $qry->row['amount'];
    }

    public function getOrder($order_id) {
        $qry = $this->db->query("SELECT * FROM `" . DB_PREFIX . "paypal_iframe_order` WHERE `order_id` = '" . (int)$order_id . "' LIMIT 1");

        if ($qry->num_rows) {
            $order = $qry->row;
            $order['transactions'] = $this->getTransactions($order['paypal_iframe_order_id']);
            $order['captured'] = $this->getTotalCaptured($order['paypal_iframe_order_id']);
            return $order;
        } else {
            return false;
        }
    }

    public function call($data) {

        if ($this->config->get('pp_pro_iframe_test') == 1) {
            $api_endpoint = 'https://api-3t.sandbox.paypal.com/nvp';
        } else {
            $api_endpoint = 'https://api-3t.paypal.com/nvp';
        }

        $settings = array(
            'USER'         => $this->config->get('pp_pro_iframe_user'),
            'PWD'          => $this->config->get('pp_pro_iframe_password'),
            'SIGNATURE'    => $this->config->get('pp_pro_iframe_sig'),
            'VERSION'      => '84',
            'BUTTONSOURCE' => 'WM_PRO_OPENCART_UK_' . VERSION,
        );

        $this->log($data, 'Call data');

        $defaults = array(
            CURLOPT_POST           => 1,
            CURLOPT_HEADER         => 0,
            CURLOPT_URL            => $api_endpoint,
            CURLOPT_USERAGENT      => "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1",
            CURLOPT_FRESH_CONNECT  => 1,
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_FORBID_REUSE   => 1,
            CURLOPT_TIMEOUT        => 0,
            CURLOPT_SSL_VERIFYPEER => 0,
            CURLOPT_SSL_VERIFYHOST => 0,
            CURLOPT_POSTFIELDS     => http_build_query(array_merge($data, $settings), '', "&")
        );

        $ch = curl_init();

        curl_setopt_array($ch, $defaults);

        if (!$result = curl_exec($ch)) {

            $log_data = array(
                'curl_error' => curl_error($ch),
                'curl_errno' => curl_errno($ch)
            );

            $this->log($log_data, 'CURL failed');

            return false;
        }

        $this->log($result, 'Result');

        curl_close($ch);

        return $this->cleanReturn($result);
    }

    public function updateOrder($capture_status, $order_id) {
        $this->db->query("UPDATE `" . DB_PREFIX . "paypal_iframe_order` SET `date_modified` = now(), `capture_status` = '" . $this->db->escape($capture_status) . "' WHERE `order_id` = '" . (int)$order_id . "'");
    }

    public function updateTransaction($transaction) {
        $this->db->query("
			UPDATE " . DB_PREFIX . "paypal_iframe_order_transaction
			SET paypal_iframe_order_id = " . (int)$transaction['paypal_iframe_order_id'] . ",
				transaction_id = '" . $this->db->escape($transaction['transaction_id']) . "',
				parent_id = '" . $this->db->escape($transaction['parent_id']) . "',
				date_added = '" . $this->db->escape($transaction['date_added']) . "',
				note = '" . $this->db->escape($transaction['note']) . "',
				msgsubid = '" . $this->db->escape($transaction['msgsubid']) . "',
				receipt_id = '" . $this->db->escape($transaction['receipt_id']) . "',
				payment_type = '" . $this->db->escape($transaction['payment_type']) . "',
				payment_status = '" . $this->db->escape($transaction['payment_status']) . "',
				pending_reason = '" . $this->db->escape($transaction['pending_reason']) . "',
				transaction_entity = '" . $this->db->escape($transaction['transaction_entity']) . "',
				amount = '" . $this->db->escape($transaction['amount']) . "',
				debug_data = '" . $this->db->escape($transaction['debug_data']) . "',
				call_data = '" . $this->db->escape($transaction['call_data']) . "'
			WHERE paypal_iframe_order_transaction_id = " . (int)$transaction['paypal_iframe_order_transaction_id'] . "
		");
    }

    public function addTransaction($transaction_data, $request_data = array()) {
        $this->db->query("INSERT INTO `" . DB_PREFIX . "paypal_iframe_order_transaction` SET `paypal_iframe_order_id` = '" . (int)$transaction_data['paypal_iframe_order_id'] . "', `transaction_id` = '" . $this->db->escape($transaction_data['transaction_id']) . "', `parent_id` = '" . $this->db->escape($transaction_data['parent_id']) . "', `date_added` = NOW(), `note` = '" . $this->db->escape($transaction_data['note']) . "', `msgsubid` = '" . $this->db->escape($transaction_data['msgsubid']) . "', `receipt_id` = '" . $this->db->escape($transaction_data['receipt_id']) . "', `payment_type` = '" . $this->db->escape($transaction_data['payment_type']) . "', `payment_status` = '" . $this->db->escape($transaction_data['payment_status']) . "', `pending_reason` = '" . $this->db->escape($transaction_data['pending_reason']) . "', `transaction_entity` = '" . $this->db->escape($transaction_data['transaction_entity']) . "', `amount` = '" . (float)$transaction_data['amount'] . "', `debug_data` = '" . $this->db->escape($transaction_data['debug_data']) . "'");

        $paypal_iframe_order_transaction_id = $this->db->getLastId();

        if ($request_data) {
            $serialized_data = json_encode($request_data);

            $this->db->query("
				UPDATE " . DB_PREFIX . "paypal_iframe_order_transaction
				SET call_data = '" . $this->db->escape($serialized_data) . "'
				WHERE paypal_iframe_order_transaction_id = " . (int)$paypal_iframe_order_transaction_id . "
				LIMIT 1
			");
        }

        return $paypal_iframe_order_transaction_id;
    }

    public function log($data, $title = null) {
        if ($this->config->get('pp_pro_iframe_debug')) {
            $log = new Log('pp_pro_iframe.log');
            $log->write($title . ': ' . json_encode($data));
        }
    }

    public function getTransaction($transaction_id) {
        $call_data = array(
            'METHOD'        => 'GetTransactionDetails',
            'TRANSACTIONID' => $transaction_id,
        );

        return $this->call($call_data);
    }

    public function getOrderId($transaction_id) {
        $qry = $this->db->query("SELECT `o`.`order_id` FROM `" . DB_PREFIX . "paypal_iframe_order_transaction` `ot` LEFT JOIN `" . DB_PREFIX . "paypal_iframe_order` `o`  ON `o`.`paypal_iframe_order_id` = `ot`.`paypal_iframe_order_id`  WHERE `ot`.`transaction_id` = '" . $this->db->escape($transaction_id) . "' LIMIT 1");

        if ($qry->num_rows) {
            return $qry->row['order_id'];
        } else {
            return false;
        }
    }

    public function updateAuthorizationId($paypal_iframe_order_id, $authorization_id) {
        $this->db->query("
			UPDATE `" . DB_PREFIX . "paypal_iframe_order`
			SET `authorization_id` = '" . $this->db->escape($authorization_id) . "'
			WHERE `paypal_iframe_order_id` = '" . $this->db->escape($paypal_iframe_order_id) . "'
		");
    }

    public function updateRefundTransaction($transaction_id, $transaction_type) {
        $this->db->query("UPDATE `" . DB_PREFIX . "paypal_iframe_order_transaction` SET `payment_status` = '" . $this->db->escape($transaction_type) . "' WHERE `transaction_id` = '" . $this->db->escape($transaction_id) . "' LIMIT 1");
    }

    public function getFailedTransaction($paypl_iframe_order_transaction_id) {
        $result = $this->db->query("
			SELECT *
			FROM " . DB_PREFIX . "paypal_iframe_order_transaction
			WHERE paypal_iframe_order_transaction_id = " . (int)$paypl_iframe_order_transaction_id . "
		")->row;

        if ($result) {
            return $result;
        } else {
            return false;
        }
    }

    public function getLocalTransaction($transaction_id) {
        $result = $this->db->query("
			SELECT *
			FROM " . DB_PREFIX . "paypal_iframe_order_transaction
			WHERE transaction_id = '" . $this->db->escape($transaction_id) . "'
		")->row;

        if ($result) {
            return $result;
        } else {
            return false;
        }
    }

    protected function cleanReturn($data) {
        $data = explode('&', $data);

        $arr = array();

        foreach ($data as $k => $v) {
            $tmp = explode('=', $v);
            $arr[$tmp[0]] = urldecode($tmp[1]);
        }

        return $arr;
    }

}