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<?php

/**
 * The Gravity Forms Query Literal class.
 */
class GF_Query_Literal {
    /**
     * @var int|string|float The value.
     */
    private $_value;

    /**
     * A literal value.
     *
     * @param int|string|float $value
     */
    public function __construct( $value ) {
        if ( is_int( $value ) || is_string( $value ) || is_float( $value ) ) {
            $this->value = $value;
        }
    }

    /**
     * Get SQL for this.
     *
     * @param GF_Query $query The query.
     * @param string $delimiter The delimiter for arrays.
     *
     * @return string The SQL.
     */
    public function sql( $query, $delimiter = '' ) {
        global $wpdb;

        if ( is_int( $this->value ) ) {
            return $wpdb->prepare( '%d', $this->value );
        } elseif ( is_double( $this->value ) ) {
            return $this->value;
        } elseif ( is_string( $this->value ) || is_float( $this->value ) ) {
            return $wpdb->prepare( '%s', $this->value );
        }

        /**
         * @todo Add support for Column, Call
         */

        return '';
    }

    /**
     * Proxy read-only values.
     */
    public function __get( $key ) {
        switch ( $key ) :
            case 'value':
                return $this->_value;
        endswitch;
    }
}