s-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'		=> $option_name,
					'id'				=> 'reset_number_yearly',
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'log_number_generation',
				'title'			=> __( 'Log invoice number generation', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'log_number_generation',
					'description'	=> sprintf(
						/* translators: here link */
						__( 'Enables the invoice number generation logs %s. Helpful for debugging numbering issues.', 'woocommerce-pdf-invoices-packing-slips' ),
						'<a href="'.esc_url( admin_url( 'admin.php?page=wc-status&tab=logs' ) ).'">'.__( 'here', 'woocommerce-pdf-invoices-packing-slips' ).'</a>'
					),
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'my_account_buttons',
				'title'			=> __( 'Allow My Account invoice download', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'select',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'my_account_buttons',
					'options' 		=> array(
						'available'	=> __( 'Only when an invoice is already created/emailed' , 'woocommerce-pdf-invoices-packing-slips' ),
						'custom'	=> __( 'Only for specific order statuses (define below)' , 'woocommerce-pdf-invoices-packing-slips' ),
						'always'	=> __( 'Always' , 'woocommerce-pdf-invoices-packing-slips' ),
						'never'		=> __( 'Never' , 'woocommerce-pdf-invoices-packing-slips' ),
					),
					'custom'		=> array(
						'type'		=> 'multiple_checkboxes',
						'args'		=> array(
							'option_name'     => $option_name,
							'id'              => 'my_account_restrict',
							'fields_callback' => array( $this, 'get_wc_order_status_list' ),
						),
					),
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'invoice_number_column',
				'title'			=> __( 'Enable invoice number column in the orders list', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'invoice_number_column',
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'invoice_date_column',
				'title'			=> __( 'Enable invoice date column in the orders list', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'invoice_date_column',
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'invoice_number_search',
				'title'			=> __( 'Enable invoice number search in the orders list', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'invoice_number_search',
					'description'   => __( 'Can potentially slow down the search process.', 'woocommerce-pdf-invoices-packing-slips' ),
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'disable_free',
				'title'			=> __( 'Disable for free orders', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'disable_free',
					/* translators: zero number */
					'description'	=> sprintf(__( "Disable document when the order total is %s", 'woocommerce-pdf-invoices-packing-slips' ), function_exists('wc_price') ? wc_price( 0 ) : 0 ),
				)
			),
			array(
				'type'     => 'setting',
				'id'       => 'mark_printed',
				'title'    => __( 'Mark as printed', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback' => 'select',
				'section'  => 'invoice',
				'args'     => array(
					'option_name' => $option_name,
					'id'          => 'mark_printed',
					'options'     => array_merge(
						[
							'manually' => __( 'Manually', 'woocommerce-pdf-invoices-packing-slips' ),
						],
						apply_filters( 'wpo_wcpdf_document_triggers', [
							'single'           => __( 'On single order action', 'woocommerce-pdf-invoices-packing-slips' ),
							'bulk'             => __( 'On bulk order action', 'woocommerce-pdf-invoices-packing-slips' ),
							'my_account'       => __( 'On my account', 'woocommerce-pdf-invoices-packing-slips' ),
							'email_attachment' => __( 'On email attachment', 'woocommerce-pdf-invoices-packing-slips' ),
							'document_data'    => __( 'On order document data (number and/or date set manually)', 'woocommerce-pdf-invoices-packing-slips' ),
						] )
					),
					'multiple'         => true,
					'enhanced_select'  => true,
					'description'      => __( 'Allows you to mark the document as printed, manually (in the order page) or automatically (based on the document creation context you have selected).', 'woocommerce-pdf-invoices-packing-slips' ),
				)
			),
			array(
				'type'     => 'setting',
				'id'       => 'unmark_printed',
				'title'    => __( 'Unmark as printed', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback' => 'checkbox',
				'section'  => 'invoice',
				'args'     => array(
					'option_name' => $option_name,
					'id'          => 'unmark_printed',
					'description' => __( 'Adds a link in the order page to allow to remove the printed mark.', 'woocommerce-pdf-invoices-packing-slips' ),
				)
			),
			array(
				'type'			=> 'setting',
				'id'			=> 'use_latest_settings',
				'title'			=> __( 'Always use most current settings', 'woocommerce-pdf-invoices-packing-slips' ),
				'callback'		=> 'checkbox',
				'section'		=> 'invoice',
				'args'			=> array(
					'option_name'	=> $option_name,
					'id'			=> 'use_latest_settings',
					'description'	=> __( "When enabled, the document will always reflect the most current settings (such as footer text, document name, etc.) rather than using historical settings.", 'woocommerce-pdf-invoices-packing-slips' )
					                   . "<br>"
					                   . __( "<strong>Caution:</strong> enabling this will also mean that if you change your company name or address in the future, previously generated documents will also be affected.", 'woocommerce-pdf-invoices-packing-slips' ),
				)
			),
		);

		// remove/rename some fields when invoice number is controlled externally
		if( apply_filters('woocommerce_invoice_number_by_plugin', false) ) {
			$remove_settings = array( 'next_invoice_number', 'number_format', 'reset_number_yearly' );
			foreach ($settings_fields as $key => $settings_field) {
				if (in_array($settings_field['id'], $remove_settings)) {
					unset($settings_fields[$key]);
				} elseif ( $settings_field['id'] == 'display_number' ) {
					// alternate description for invoice number
					$invoice_number_desc = __( 'Invoice numbers are created by a third-party extension.', 'woocommerce-pdf-invoices-packing-slips' );
					if ( $config_link = apply_filters( 'woocommerce_invoice_number_configuration_link', null ) ) {
						/* translators: link */
						$invoice_number_desc .= ' '.sprintf(__( 'Configure it <a href="%s">here</a>.', 'woocommerce-pdf-invoices-packing-slips' ), esc_attr( $config_link ) );
					}
					$settings_fields[$key]['args']['description'] = '<i>'.$invoice_number_desc.'</i>';
				}
			}
		}

		// allow plugins to alter settings fields
		$settings_fields = apply_filters( 'wpo_wcpdf_settings_fields_documents_invoice', $settings_fields, $page, $option_group, $option_name );
		WPO_WCPDF()->settings->add_settings_fields( $settings_fields, $page, $option_group, $option_name );
		return;

	}

	/**
	 * Document number title
	 */
	public function get_number_title() {
		$number_title = __( 'Invoice Number:', 'woocommerce-pdf-invoices-packing-slips' );
		return apply_filters( "wpo_wcpdf_{$this->slug}_number_title", $number_title, $this );
	}

	/**
	 * Document date title
	 */
	public function get_date_title() {
		$date_title = __( 'Invoice Date:', 'woocommerce-pdf-invoices-packing-slips' );
		return apply_filters( "wpo_wcpdf_{$this->slug}_date_title", $date_title, $this );
	}

}

endif; // class_exists