<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

/**
 * WC_Cardpay_Authnet_API
 */
 class WC_Cardpay_Authnet_API {
	private $_url;
	private $_api_login;
	private $_transaction_key;

	public $wc_pre_30;

	public function __construct() {
		$this->wc_pre_30 = version_compare( WC_VERSION, '3.0.0', '<' ); 
	}

	/**
	 * authorize function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * 
	 * @return mixed
	 */
	public function authorize( $gateway, $order, $amount, $card ) {
		$payload = $this->get_payload( $gateway, $order, $amount, 'authOnlyTransaction', $card );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * purchase function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * 
	 * @return mixed
	 */
	public function purchase( $gateway, $order, $amount, $card ) {
		$payload = $this->get_payload( $gateway, $order, $amount, 'authCaptureTransaction', $card );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * capture function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * 
	 * @return mixed
	 */
	public function capture( $gateway, $order, $amount ) {
		$payload = $this->get_payload( $gateway, $order, $amount, 'priorAuthCaptureTransaction' );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * refund function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * 
	 * @return mixed
	 */
	public function refund( $gateway, $order, $amount ) {
		$payload = $this->get_payload( $gateway, $order, $amount, 'refundTransaction' );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * void function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * 
	 * @return mixed
	 */
	public function void( $gateway, $order, $amount ) {
		$payload = $this->get_payload( $gateway, $order, $amount, 'voidTransaction' );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * verify function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * 
	 * @return mixed
	 */
	public function create_profile( $gateway ) {
		$payload = $this->get_token_payload( $gateway );
		$response = $this->post_transaction( $payload );
		return $response;
	}

	/**
	 * get_payload function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * @param WC_Order                   $order
	 * @param float                      $amount
	 * @param string                     $transaction_type
	 * 
	 * @return string
	 */
	public function get_payload( $gateway, $order, $amount, $transaction_type, $card = '' ) {
		$order_number = $this->wc_pre_30 ? $order->id : $order->get_id();
		$billing_first_name = $this->wc_pre_30 ? $order->billing_first_name : $order->get_billing_first_name();
		$billing_last_name = $this->wc_pre_30 ? $order->billing_last_name : $order->get_billing_last_name();
		$billing_address = $this->wc_pre_30 ? $order->billing_address_1 : $order->get_billing_address_1();
		$billing_city = $this->wc_pre_30 ? $order->billing_city : $order->get_billing_city();
		$billing_state = $this->wc_pre_30 ? $order->billing_state : $order->get_billing_state();
		$billing_postcode = $this->wc_pre_30 ? $order->billing_postcode : $order->get_billing_postcode();
		$billing_country = $this->wc_pre_30 ? $order-billing_country : $order->get_billing_country();
		$tax_amount = $this->wc_pre_30 ? $order->order_tax : $order->get_total_tax();
		$cardholder_name = $billing_first_name . ' ' . $billing_last_name;

		if ( 'yes' == $gateway->sandbox ) {
			$this->_url = 'https://apitest.authorize.net/xml/v1/request.api';
			$this->_api_login = '57Uqk3stH8';
			$this->_transaction_key = '8yy229eR9S643mSz';
		} else {
			$this->_url = 'https://api.authorize.net/xml/v1/request.api';
			$this->_api_login = $gateway->api_login;
			$this->_transaction_key = $gateway->transaction_key;
		}

		if ( 'authOnlyTransaction' == $transaction_type || 'authCaptureTransaction' == $transaction_type ) {
			if ( ! empty( $card ) ) {
				$token_array = explode("|", $card->get_token() );
				$customer_id = $token_array[0];
				$payment_id = $token_array[1];
				$data = array(
					'createTransactionRequest' => array(
						'merchantAuthentication' => array(
							'name' => $this->_api_login,
							'transactionKey' => $this->_transaction_key,
						),
						'refId' => wc_clean( $order_number ),
						'transactionRequest' => array(
							'transactionType' => wc_clean( $transaction_type ),
							'amount' => wc_clean( $amount ),
							'profile' => array(
								'customerProfileId' => $customer_id,
								'paymentProfile' => array(
									'paymentProfileId' => $payment_id,
								),
							),
							'tax' => array(
								'amount' => number_format( $tax_amount, '2', '.', '' ),
								'name' => 'Sales Tax',
							),
						),
					),
				);
			} else {
				$card_number = str_replace( ' ', '', $_POST['authnet-card-number'] );
				$exp_date_array = explode( "/", $_POST['authnet-card-expiry'] );
				$exp_month = trim( $exp_date_array[0] );
				$exp_year = trim( $exp_date_array[1] );
				$exp_date = $exp_month . substr( $exp_year, -2 );
				$data = array(
					'createTransactionRequest' => array(
						'merchantAuthentication' => array(
							'name' => wc_clean( $this->_api_login ),
							'transactionKey' => wc_clean( $this->_transaction_key ),
						),
						'refId' => wc_clean( $order_number ),
						'transactionRequest' => array(
							'transactionType' => wc_clean( $transaction_type ),
							'amount' => wc_clean( $amount ),
							'payment' => array(
								'creditCard' => array(
									'cardNumber' => wc_clean( $card_number ),
									'expirationDate' => wc_clean( $exp_date ),
									'cardCode' => wc_clean( $_POST['authnet-card-cvc'] ),
								),
							),
							'profile' => array(
								'createProfile' => true,
							),
							'tax' => array(
								'amount' => number_format( $tax_amount, '2', '.', '' ),
								'name' => 'Sales Tax',
							),
							'customer' => array(
								'type' => 'individual',
								'id' => uniqid(),
							),
							'billTo' => array(
								'firstName' => wc_clean( $billing_first_name ),
								'lastName' => wc_clean( $billing_last_name ),
								'address' => wc_clean( substr( $billing_address, 0, 30 ) ),
								'city' => wc_clean( substr( $billing_city, 0, 40 ) ),
								'state' => wc_clean( substr( $billing_state, 0, 40 ) ),
								'zip' => wc_clean( substr( $billing_postcode, 0, 10 ) ),
								'country' => wc_clean( substr( $billing_country, 0, 60 ) ),
							),
							
						)
					),
				);
			}
		} else {
			$tran_meta = get_post_meta( $order_number, '_authnet_transaction', true );
			if ( 'refundTransaction' == $transaction_type ) {
				$data = array(
					'createTransactionRequest' => array(
						'merchantAuthentication' => array(
							'name' => wc_clean( $this->_api_login ),
							'transactionKey' => wc_clean( $this->_transaction_key ),
						),
						'refId' => wc_clean( $order_number ),
						'transactionRequest' => array(
							'transactionType' => wc_clean( $transaction_type ),
							'amount' => wc_clean( $amount ),
							'payment' =>  array(
								'creditCard' => array(
									'cardNumber' => wc_clean( $tran_meta['cc_last4'] ),
									'expirationDate' => wc_clean( $tran_meta['cc_expiry'] ),
								),
							),
							'refTransId' => wc_clean( $tran_meta['transaction_id'] ),
						),
					),
				);
			} else {
				$data = array(
					'createTransactionRequest' => array(
						'merchantAuthentication' => array(
							'name' => wc_clean( $this->_api_login ),
							'transactionKey' => wc_clean( $this->_transaction_key ),
						),
						'refId' => wc_clean( $order_number ),
						'transactionRequest' => array(
							'transactionType' => wc_clean( $transaction_type ),
							'amount' => wc_clean( $amount ),
							'refTransId' => wc_clean( $tran_meta['transaction_id'] ),
						),
					),
				);
			}
		}
		return json_encode( $data );
	}

	/**
	 * get_token_payload function
	 * 
	 * @param WC_Cardpay_Authnet_Gateway $gateway
	 * 
	 * @return string
	 */
	public function get_token_payload( $gateway ) {
		if ( 'yes' == $gateway->sandbox ) {
			$this->_url = 'https://apitest.authorize.net/xml/v1/request.api';
			$this->_api_login = '57Uqk3stH8';
			$this->_transaction_key = '8yy229eR9S643mSz';
		} else {
			$this->_url = 'https://api.authorize.net/xml/v1/request.api';
			$this->_api_login = $gateway->api_login;
			$this->_transaction_key = $gateway->transaction_key;
		}
		$customer_id = get_current_user_id();
		$card_number = str_replace( ' ', '', $_POST['authnet-card-number'] );
		$exp_date_array = explode( "/", $_POST['authnet-card-expiry'] );
		$exp_month = trim( $exp_date_array[0] );
		$exp_year = trim( $exp_date_array[1] );
		$exp_date = $exp_month . substr( $exp_year, -2 );
		$data = array(
			'createCustomerProfileRequest' => array(
				'merchantAuthentication' => array(
					'name' => wc_clean( $this->_api_login ),
					'transactionKey' => wc_clean( $this->_transaction_key ),
				),
				'profile' => array(
					'merchantCustomerId' => uniqid(),
					'paymentProfiles' => array(
						'customerType' => 'individual',
						'billTo' => array(
							'firstName' => wc_clean( get_user_meta( $customer_id, 'billing_first_name', true ) ),
							'lastName' => wc_clean( get_user_meta( $customer_id, 'billing_last_name', true ) ),
							'address' => wc_clean( get_user_meta( $customer_id, 'billing_address_1', true ) ),
							'city' => wc_clean( get_user_meta( $customer_id, 'billing_city', true ) ),
							'state' => wc_clean( get_user_meta( $customer_id, 'billing_state', true ) ),
							'zip' => wc_clean( get_user_meta( $customer_id, 'billing_postcode', true ) ),
							'country' => wc_clean( get_user_meta( $customer_id, 'billing_country', true ) ),
						),
						'payment' => array(
							'creditCard' => array(
								'cardNumber' => wc_clean( $card_number ),
								'expirationDate' => wc_clean( $exp_date ),
								'cardCode' => wc_clean( $_POST['authnet-card-cvc'] ),
							),
						),
					),
				),
			),
		);
		return json_encode( $data );
	}

	/**
	 * post_transaction function
	 * 
	 * @param string $payload
	 * @param array  $headers
	 * 
	 * @return string|WP_Error
	 */
	public function post_transaction( $payload ) {
		$args = array(
			'headers' => array(
				'Content-Type' => 'application/json',
			),
			'body' => $payload,
			'method' => 'POST',
			'timeout' => 70,
		);
		$response = wp_remote_post( $this->_url, $args );

		if ( is_wp_error( $response ) || empty( $response['body'] ) ) {
			return new WP_Error( 'authnet_error', __( 'There was a problem connecting to the payment gateway.', 'woocommerce-cardpay-authnet' ) );
		}

		$parsed_response = json_decode( preg_replace('/\xEF\xBB\xBF/', '', $response['body'] ) );

		if ( ! empty( $parsed_response->transactionResponse->errors ) ) {
			$error_msg = __( 'Payment errors: ', 'woocommerce-cardpay-authnet' ) . $parsed_response->transactionResponse->errors[0]->errorText;
			return new WP_Error( 'authnet_error', $error_msg );
		} else {
			return $parsed_response;
		}
	}

	/**
	 * get_card_type function
	 * 
	 * @param string $number
	 * 
	 * @return string
	 */
	public function get_card_type( $number ) {
		if ( preg_match( '/^4\d{12}(\d{3})?(\d{3})?$/', $number ) ) {
			return 'Visa';
		} elseif ( preg_match( '/^3[47]\d{13}$/', $number ) ) {
			return 'American Express';
		} elseif ( preg_match( '/^(5[1-5]\d{4}|677189|222[1-9]\d{2}|22[3-9]\d{3}|2[3-6]\d{4}|27[01]\d{3}|2720\d{2})\d{10}$/', $number ) ) {
			return 'MasterCard';
		} elseif ( preg_match( '/^(6011|65\d{2}|64[4-9]\d)\d{12}|(62\d{14})$/', $number ) ) {
			return 'Discover';
		} elseif  (preg_match( '/^35(28|29|[3-8]\d)\d{12}$/', $number ) ) {
			return 'JCB';
		} elseif ( preg_match( '/^3(0[0-5]|[68]\d)\d{11}$/', $number ) ) {
			return 'Diners Club';
		}
	}
}