array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'extended_info' => array(
					'code'             => array(
						'type'        => 'string',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'description' => __( 'Coupon code.', 'woocommerce' ),
					),
					'date_created'     => array(
						'type'        => 'date-time',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'description' => __( 'Coupon creation date.', 'woocommerce' ),
					),
					'date_created_gmt' => array(
						'type'        => 'date-time',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'description' => __( 'Coupon creation date in GMT.', 'woocommerce' ),
					),
					'date_expires'     => array(
						'type'        => 'date-time',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'description' => __( 'Coupon expiration date.', 'woocommerce' ),
					),
					'date_expires_gmt' => array(
						'type'        => 'date-time',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'description' => __( 'Coupon expiration date in GMT.', 'woocommerce' ),
					),
					'discount_type'    => array(
						'type'        => 'string',
						'readonly'    => true,
						'context'     => array( 'view', 'edit' ),
						'enum'        => array_keys( wc_get_coupon_types() ),
						'description' => __( 'Coupon discount type.', 'woocommerce' ),
					),
				),
			),
		);

		return $this->add_additional_fields_schema( $schema );
	}

	/**
	 * Get the query params for collections.
	 *
	 * @return array
	 */
	public function get_collection_params() {
		$params                       = parent::get_collection_params();
		$params['orderby']['default'] = 'coupon_id';
		$params['orderby']['enum']    = array(
			'coupon_id',
			'code',
			'amount',
			'orders_count',
		);
		$params['coupons']            = array(
			'description'       => __( 'Limit result set to coupons assigned specific coupon IDs.', 'woocommerce' ),
			'type'              => 'array',
			'sanitize_callback' => 'wp_parse_id_list',
			'validate_callback' => 'rest_validate_request_arg',
			'items'             => array(
				'type' => 'integer',
			),
		);
		$params['extended_info']      = array(
			'description'       => __( 'Add additional piece of info about each coupon to the report.', 'woocommerce' ),
			'type'              => 'boolean',
			'default'           => false,
			'sanitize_callback' => 'wc_string_to_bool',
			'validate_callback' => 'rest_validate_request_arg',
		);

		return $params;
	}

	/**
	 * Get the column names for export.
	 *
	 * @return array Key value pair of Column ID => Label.
	 */
	public function get_export_columns() {
		$export_columns = array(
			'code'         => __( 'Coupon code', 'woocommerce' ),
			'orders_count' => __( 'Orders', 'woocommerce' ),
			'amount'       => __( 'Amount discounted', 'woocommerce' ),
			'created'      => __( 'Created', 'woocommerce' ),
			'expires'      => __( 'Expires', 'woocommerce' ),
			'type'         => __( 'Type', 'woocommerce' ),
		);

		/**
		 * Filter to add or remove column names from the coupons report for
		 * export.
		 *
		 * @since 1.6.0
		 */
		return apply_filters(
			'woocommerce_report_coupons_export_columns',
			$export_columns
		);
	}

	/**
	 * Get the column values for export.
	 *
	 * @param array $item Single report item/row.
	 * @return array Key value pair of Column ID => Row Value.
	 */
	public function prepare_item_for_export( $item ) {
		$date_expires = empty( $item['extended_info']['date_expires'] )
			? __( 'N/A', 'woocommerce' )
			: $item['extended_info']['date_expires'];

		$export_item = array(
			'code'         => $item['extended_info']['code'],
			'orders_count' => $item['orders_count'],
			'amount'       => $item['amount'],
			'created'      => $item['extended_info']['date_created'],
			'expires'      => $date_expires,
			'type'         => $item['extended_info']['discount_type'],
		);

		/**
		 * Filter to prepare extra columns in the export item for the coupons
		 * report.
		 *
		 * @since 1.6.0
		 */
		return apply_filters(
			'woocommerce_report_coupons_prepare_export_item',
			$export_item,
			$item
		);
	}
}