Add the option in the Woo Viet setting page

inc/class-wooviet-admin-page.php

@@ -88,6 +88,24 @@ class WooViet_Admin_Page {
                        value="<?php echo wp_create_nonce( 'wooviet_save_settings' ) ?>">
                 <table class="form-table">
                     <tbody>
+                    <tr>
+                        <th scope="row"><?php _e( 'Add the OnePay Domestic Gateway', 'woo-viet' ) ?></th>
+                        <td>
+                            <input name="settings[add_onepay_domestic][enabled]" type="hidden" value="no">
+                            <input name="settings[add_onepay_domestic][enabled]" type="checkbox" id="add_onepay_domestic" value="yes"
+			                    <?php if ( 'yes' == $settings['add_onepay_domestic']['enabled'] )
+				                    echo 'checked="checked"' ?>>
+                            <label for="add_onepay_domestic"><?php _e( 'Enabled', 'woo-viet' ) ?></label>
+                            <br/>
+                            <br/>
+                            <label for="">
+                                <?php
+                            echo sprintf( __('Please configure this gateway under <a href="%s">WooCommerce -> Settings -> Checkout</a>', 'woo-viet'), admin_url( 'admin.php?page=wc-settings&tab=checkout') );
+                            ?>
+                            </label>
+                        </td>
+                    </tr>
+
                     <tr>
                         <th scope="row"><?php _e( 'Add provinces for Vietnam', 'woo-viet' ) ?></th>
                         <td>

woo-viet.php

@@ -60,6 +60,10 @@ class WooViet {
 				'currency' => 'USD',
 				'rate'     => '22770',
 			),
+		'add_onepay_domestic'           =>
+			array(
+				'enabled' => 'yes',
+			),
 		);
 	/**
 	 * The properties to manage all classes under the "inc/" folder
@@ -131,14 +135,6 @@ class WooViet {
 	 */
 	public function main() {
 
-		// @todo: ver 1.3 check this
-		add_filter( 'woocommerce_payment_gateways', array( $this, 'add_gateway_class' ) );
-
-		include( 'inc/class-wooviet-onepay-domestic.php');
-		$WooViet_OnePay_Domestic_Hook = new WooViet_OnePay_Domestic();
-		add_action('wooviet_handle_onepay_querydr', array($WooViet_OnePay_Domestic_Hook, 'handle_onepay_querydr'), 10, 1);
-
-
 		if ( is_admin() ) {
 			// Add the admin setting page
 			include( WOO_VIET_DIR . 'inc/class-wooviet-admin-page.php' );
@@ -147,6 +143,16 @@ class WooViet {
 		}
 
 		$settings = self::get_settings();
+		// Check if "Add the OnePay Domestic Gateway" is enabled
+		if ( 'yes' == $settings['add_onepay_domestic']['enabled'] ) {
+			// @todo: ver 1.3 check this
+			add_filter( 'woocommerce_payment_gateways', array( $this, 'add_gateway_class' ) );
+
+			include( 'inc/class-wooviet-onepay-domestic.php');
+			$WooViet_OnePay_Domestic_Hook = new WooViet_OnePay_Domestic();
+			add_action('wooviet_handle_onepay_querydr', array($WooViet_OnePay_Domestic_Hook, 'handle_onepay_querydr'), 10, 1);
+
+		}
 
 		// Check if "Add provinces for Vietnam	" is enabled.
 		if ( 'yes' == $settings['add_province']['enabled'] ) {