friendica-addons/dav/common/wdcal_configuration.php

<?php

abstract class wdcal_local
{

	const LOCAL_US = 0;
	const LOCAL_DE = 1;

	/**
	 * @static
	 * @return array|wdcal_local[]
	 */
	static function getInstanceClasses() {
		return array(
			self::LOCAL_US => "wdcal_local_us",
			self::LOCAL_DE => "wdcal_local_de",
		);
	}

	/**
	 * @static
	 * @param int $config
	 * @return null|wdcal_local
	 */
	static function getInstance($config = 0) {
		$classes = self::getInstanceClasses();
		if (isset($classes[$config])) return new $classes[$config];
		return null;
	}

	/**
	 * @static
	 * @param int $uid
	 * @return wdcal_local
	 */
	static function getInstanceByUser($uid = 0) {
		$dateformat = get_pconfig($uid, "dav", "dateformat");
		$format = self::getInstance($dateformat);
		if ($format == null) $format = self::getInstance(self::LOCAL_US);
		return $format;
	}

	/**
	 * @abstract
	 * @static
	 * @return string
	 */
	abstract static function getName();

	/**
	 * @static
	 * @abstract
	 * @return int
	 */
	abstract static function getID();

	/**
	 * @param string $str
	 * @return int
	 */
	function date_local2timestamp($str) {
		$x = $this->date_parseLocal($str);
		return mktime($x["hour"], $x["minute"], $x["second"], $x["month"], $x["day"], $x["year"]);
	}

	/**
	 * @abstract
	 * @param string $str
	 * @return array
	 */
	abstract function date_parseLocal($str);

	/**
	 * @abstract
	 * @param int $ts
	 * @return string
	 */
	abstract function date_timestamp2local($ts);

	/**
	 * @abstract
	 * @return int
	 */
	abstract function getFirstDayOfWeek();

	/**
	 * @abstract
	 * @return string
	 */
	abstract function dateformat_js_dm1();
	/**
	 * @abstract
	 * @return string
	 */
	abstract function dateformat_js_dm2();

	/**
	 * @abstract
	 * @return string
	 */
	abstract function dateformat_js_dm3();

	/**
	 * @abstract
	 * @return string
	 */
	abstract function dateformat_datepicker_js();

	/**
	 * @abstract
	 * @param int $ts
	 * @return string
	 */
	abstract function dateformat_datepicker_php($ts = 0);

}



class wdcal_local_us extends wdcal_local {

	/**
	 * @return string
	 */
	static function getName() {
		return t("U.S. Time Format (mm/dd/YYYY)");
	}

	/**
	 * @static
	 * @return int
	 */
	static function getID() {
		return wdcal_local::LOCAL_US;
	}

	/**
	 * @param string $str
	 * @return array
	 */
	function date_parseLocal($str) {
		return date_parse_from_format("m/d/Y H:i", $str);
	}


	/**
	 * @param int $ts
	 * @return string
	 */
	function date_timestamp2local($ts)
	{
		return date("m/d/Y H:i", $ts);
	}

	/**
	 * @return int
	 */
	function getFirstDayOfWeek() {
		return 0;
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm1() {
		return "W, M/d";
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm2() {
		return "d. L";
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm3() {
		return "d L yyyy";
	}

	/**
	 * @return string
	 */
	function dateformat_datepicker_js() {
		return "mm/dd/yy";
	}

	/**
	 * @param int $ts
	 * @return string
	 */
	function dateformat_datepicker_php($ts = 0) {
		return date("m/d/Y", $ts);
	}
}

class wdcal_local_de extends  wdcal_local {

	/**
	 * @return string
	 */
	static function getName() {
		return t("German Time Format (dd.mm.YYYY)");
	}

	/**
	 * @static
	 * @return int
	 */
	static function getID() {
		return wdcal_local::LOCAL_DE;
	}

	/**
	 * @param string $str
	 * @return array
	 */
	function date_parseLocal($str)
	{
		return date_parse_from_format("d.m.Y H:i", $str);
	}

	/**
	 * @param int $ts
	 * @return string
	 */
	function date_timestamp2local($ts)
	{
		return date("d.m.Y H:i", $ts);
	}

	/**
	 * @return int
	 */
	function getFirstDayOfWeek() {
		return 1;
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm1() {
		return "W, d.M";
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm2() {
		return "d. L";
	}

	/**
	 * @return string
	 */
	function dateformat_js_dm3() {
		return "d L yyyy";
	}

	/**
	 * @return string
	 */
	function dateformat_datepicker_js() {
		return "dd.mm.yy";
	}

	/**
	 * @param int $ts
	 * @return string
	 */
	function dateformat_datepicker_php($ts = 0) {
		return date("d.m.Y", $ts);
	}
}