public static function get_dates( $range ) {

		$now = current_time( 'timestamp' );

		$dates = array(
			'start' => '',
			'end'   => date( 'Y-m-d', $now ),
		);

		switch ( $range ) {

			case 'this-year':
				$dates['start'] = date( 'Y', $now ) . '-01-01';
				break;

			case 'last-month':
				$dates['start'] = date( 'Y-m-d', strtotime( 'first day of last month', $now ) );
				$dates['end']   = date( 'Y-m-d', strtotime( 'last day of last month', $now ) );
				break;

			case 'this-month':
				$dates['start'] = date( 'Y-m', $now ) . '-01';
				break;

			case 'last-7-days':
				$dates['start'] = date( 'Y-m-d', strtotime( '-7 days', $now ) );
				break;

			case 'custom':
				$dates['start'] = self::get_date_start();
				$dates['end']   = self::get_date_end();
				break;
		}

		return $dates;
	}