public function __construct() {
		$this->id                = 'paypal';
		$this->has_fields        = false;
		$this->order_button_text = __( 'Proceed to PayPal', 'woocommerce' );
		$this->method_title      = __( 'PayPal', 'woocommerce' );
		/* translators: %s: Link to WC system status page */
		$this->method_description = __( 'PayPal Standard redirects customers to PayPal to enter their payment information.', 'woocommerce' );
		$this->supports           = array(
			'products',
			'refunds',
		);

		// Load the settings.
		$this->init_form_fields();
		$this->init_settings();

		// Define user set variables.
		$this->title          = $this->get_option( 'title' );
		$this->description    = $this->get_option( 'description' );
		$this->testmode       = 'yes' === $this->get_option( 'testmode', 'no' );
		$this->debug          = 'yes' === $this->get_option( 'debug', 'no' );
		$this->email          = $this->get_option( 'email' );
		$this->receiver_email = $this->get_option( 'receiver_email', $this->email );
		$this->identity_token = $this->get_option( 'identity_token' );
		self::$log_enabled    = $this->debug;

		if ( $this->testmode ) {
			/* translators: %s: Link to PayPal sandbox testing guide page */
			$this->description .= ' ' . sprintf( __( 'SANDBOX ENABLED. You can use sandbox testing accounts only. See the <a href="%s">PayPal Sandbox Testing Guide</a> for more details.', 'woocommerce' ), 'https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/' );
			$this->description  = trim( $this->description );
		}

		add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array( $this, 'process_admin_options' ) );
		add_action( 'woocommerce_order_status_processing', array( $this, 'capture_payment' ) );
		add_action( 'woocommerce_order_status_completed', array( $this, 'capture_payment' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'admin_scripts' ) );

		if ( ! $this->is_valid_for_use() ) {
			$this->enabled = 'no';
		} else {
			include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-ipn-handler.php';
			new WC_Gateway_Paypal_IPN_Handler( $this->testmode, $this->receiver_email );

			if ( $this->identity_token ) {
				include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-pdt-handler.php';
				new WC_Gateway_Paypal_PDT_Handler( $this->testmode, $this->identity_token );
			}
		}

		if ( 'yes' === $this->enabled ) {
			add_filter( 'woocommerce_thankyou_order_received_text', array( $this, 'order_received_text' ), 10, 2 );
		}
	}