502 lines
16 KiB
PHP
502 lines
16 KiB
PHP
<?php
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class Application_Common_DateHelper
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{
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private $_dateTime;
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function __construct()
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{
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$this->_dateTime = date("U");
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}
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/**
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* Get time of object construction in the format
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* YYYY-MM-DD HH:mm:ss
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*/
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function getTimestamp()
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{
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return date("Y-m-d H:i:s", $this->_dateTime);
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}
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/**
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* Get time of object construction in the format
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* YYYY-MM-DD HH:mm:ss
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*/
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function getUtcTimestamp()
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{
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return gmdate("Y-m-d H:i:s", $this->_dateTime);
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}
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/**
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* Get date of object construction in the format
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* YYYY-MM-DD
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*/
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function getDate()
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{
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return gmdate("Y-m-d", $this->_dateTime);
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}
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/**
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* Get time of object construction in the format
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* HH:mm:ss
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*/
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function getTime()
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{
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return gmdate("H:i:s", $this->_dateTime);
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}
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/** Get the abbreviated timezone for the currently logged in user.
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* @return A string containing the short form of the timezone set in the preferences for the current user (eg. EST, CEST, etc.)
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*/
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public static function getUserTimezoneAbbreviation()
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{
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return self::getTimezoneAbbreviation(Application_Model_Preference::GetUserTimezone());
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}
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/** Get the abbreviated timezone string of the timezone the station is set to.
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* @return A string containing the short form of the station's timezone (eg. EST, CEST, etc.)
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*/
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public static function getStationTimezoneAbbreviation()
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{
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return self::getTimezoneAbbreviation(Application_Model_Preference::GetDefaultTimezone());
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}
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private static function getTimezoneAbbreviation($fullTimeZoneName)
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{
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$timeZone = new DateTimeZone($fullTimeZoneName);
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$now = new DateTime("now", $timeZone);
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return $now->format("T");
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}
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public static function getUserTimezoneOffset()
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{
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$userTimezone = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
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$now = new DateTime("now", $userTimezone);
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return $now->format("Z");
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}
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public static function getStationTimezoneOffset()
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{
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$stationTimezone = new DateTimeZone(Application_Model_Preference::GetDefaultTimezone());
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$now = new DateTime("now", $stationTimezone);
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return $now->format("Z");
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}
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/**
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*
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* @return DateTime - YYYY-MM-DD 00:00 in station timezone of today
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*/
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public static function getTodayStationStartDateTime()
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{
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$stationTimezone = new DateTimeZone(Application_Model_Preference::GetDefaultTimezone());
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$now = new DateTime("now", $stationTimezone);
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$now->setTime(0, 0, 0);
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return $now;
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}
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/**
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*
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* @return DateTime - YYYY-MM-DD 00:00 in station timezone of tomorrow
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*/
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public static function getTodayStationEndDateTime()
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{
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$stationTimezone = new DateTimeZone(Application_Model_Preference::GetDefaultTimezone());
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$now = new DateTime("now", $stationTimezone);
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$now->add(new DateInterval("P1D"));
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$now->setTime(0, 0, 0);
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return $now;
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}
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/**
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*
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* @return DateTime - YYYY-MM-DD 00:00 in station timezone
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*/
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public static function getWeekStartDateTime()
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{
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$now = self::getTodayStationStartDateTime();
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// our week starts on monday, but php week starts on sunday.
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$day = $now->format('w');
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if ($day == 0) {
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$day = 7;
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}
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$dayDiff = $day - 1;
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if ($dayDiff > 0) {
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$now->sub(new DateInterval("P{$dayDiff}D"));
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}
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return $now;
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}
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/**
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* This function formats a time by removing seconds
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*
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* When we receive a time from the database we get the
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* format "hh:mm:ss". But when dealing with show times, we
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* do not care about the seconds.
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*
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* @param int $p_dateTime
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* The value which to format.
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* @return int
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* The timestamp with the new format "hh:mm", or
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* the original input parameter, if it does not have
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* the correct format.
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*/
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public static function removeSecondsFromTime($p_dateTime)
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{
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//Format is in hh:mm:ss. We want hh:mm
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$timeExplode = explode(":", $p_dateTime);
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if (count($timeExplode) == 3)
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return $timeExplode[0].":".$timeExplode[1];
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else
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return $p_dateTime;
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}
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/* Given a track length in the format HH:MM:SS.mm, we want to
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* convert this to seconds. This is useful for Liquidsoap which
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* likes input parameters give in seconds.
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* For example, 00:06:31.444, should be converted to 391.444 seconds
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* @param int $p_time
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* The time interval in format HH:MM:SS.mm we wish to
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* convert to seconds.
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* @return float
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* The input parameter converted to seconds.
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*/
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public static function calculateLengthInSeconds($p_time){
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if (2 !== substr_count($p_time, ":")){
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return false;
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}
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if (1 === substr_count($p_time, ".")){
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list($hhmmss, $ms) = explode(".", $p_time);
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} else {
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$hhmmss = $p_time;
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$ms = 0;
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}
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list($hours, $minutes, $seconds) = explode(":", $hhmmss);
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$totalSeconds = ($hours*3600 + $minutes*60 + $seconds).".$ms";
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return round($totalSeconds, 3);
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}
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/**
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* returns true or false depending on input is wether in
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* valid range of SQL date/time
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* @param string $p_datetime
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* should be in format of '0000-00-00 00:00:00'
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*/
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public static function checkDateTimeRangeForSQL($p_datetime){
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$info = explode(' ', $p_datetime);
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$dateInfo = explode('-', $info[0]);
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if (isset($info[1])) {
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$timeInfo = explode(':', $info[1]);
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}
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$retVal = array();
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$retVal["success"] = true;
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$year = $dateInfo[0];
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$month = $dateInfo[1];
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$day = $dateInfo[2];
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// if year is < 1753 or > 9999 it's out of range
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if ($year < 1753) {
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$retVal['success'] = false;
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$retVal['errMsg'] = sprintf(_("The year %s must be within the range of 1753 - 9999"), $year);
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} else if (!checkdate($month, $day, $year)) {
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$retVal['success'] = false;
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$retVal['errMsg'] = sprintf(_("%s-%s-%s is not a valid date"), $year, $month, $day);
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} else {
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// check time
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if (isset($timeInfo)) {
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if (isset($timeInfo[0]) && $timeInfo[0] != "") {
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$hour = intval($timeInfo[0]);
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} else {
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$hour = -1;
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}
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if (isset($timeInfo[1]) && $timeInfo[1] != "") {
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$min = intval($timeInfo[1]);
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} else {
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$min = -1;
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}
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if (isset($timeInfo[2]) && $timeInfo[2] != "") {
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$sec = intval($timeInfo[2]);
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} else {
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$sec = -1;
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}
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if ( ($hour < 0 || $hour > 23) || ($min < 0 || $min > 59) || ($sec < 0 || $sec > 59) ) {
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$retVal['success'] = false;
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$retVal['errMsg'] = sprintf(_("%s:%s:%s is not a valid time"), $timeInfo[0], $timeInfo[1] ,$timeInfo[2]);
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}
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}
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}
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return $retVal;
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}
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/*
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* @param $datetime string Y-m-d H:i:s in UTC timezone
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*
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* @return string in $format default Y-m-d H:i:s in station timezone
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*/
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public static function UTCStringToStationTimezoneString($datetime, $format="Y-m-d H:i:s") {
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$stationTimezone = new DateTimeZone(Application_Model_Preference::GetDefaultTimezone());
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$utcTimezone = new DateTimeZone("UTC");
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$d = new DateTime($datetime, $utcTimezone);
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$d->setTimezone($stationTimezone);
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return $d->format($format);
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}
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/*
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* @param $datetime string Y-m-d H:i:s in UTC timezone
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*
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* @return string Y-m-d H:i:s in user's timezone
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*/
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public static function UTCStringToUserTimezoneString($datetime, $format="Y-m-d H:i:s") {
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$userTimezone = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
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$utcTimezone = new DateTimeZone("UTC");
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$d = new DateTime($datetime, $utcTimezone);
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$d->setTimezone($userTimezone);
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return $d->format($format);
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}
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/*
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* @param $datetime string Y-m-d H:i:s in user timezone
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*
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* @return string Y-m-d H:i:s in UTC timezone
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*/
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public static function UserTimezoneStringToUTCString($datetime, $format="Y-m-d H:i:s") {
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$userTimezone = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
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$utcTimezone = new DateTimeZone("UTC");
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$d = new DateTime($datetime, $userTimezone);
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$d->setTimezone($utcTimezone);
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return $d->format($format);
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}
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/**
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* Convert the columns given in the array $columnsToConvert in the
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* database result $rows to local timezone.
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*
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* @param array $rows arrays of arrays containing database query result
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* @param array $columnsToConvert array of column names to convert
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* @param string (station|user) convert to either station or user timezone.
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*/
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public static function convertTimestamps(&$rows, $columnsToConvert, $domain="station")
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{
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if (!is_array($rows)) {
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return;
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}
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$converter = "UTCStringTo".ucfirst($domain)."TimezoneString";
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foreach ($rows as &$row) {
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foreach ($columnsToConvert as $column) {
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$row[$column] = self::$converter($row[$column]);
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}
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}
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}
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/**
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* Convert the columns given in the array $columnsToConvert in the
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* database result $rows to local timezone.
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*
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* @param array $rows arrays of arrays containing database query result
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* @param array $columnsToConvert array of column names to convert
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* @param string $timezone convert to the given timezone.
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* @param string $format time format to convert to
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*/
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public static function convertTimestampsToTimezone(&$rows, $columnsToConvert, $timezone, $format="Y-m-d H:i:s")
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{
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$timezone = strtolower($timezone);
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// Check that the timezone is valid and rows is an array
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if (!is_array($rows)) {
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return;
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}
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foreach ($rows as &$row) {
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if (is_array($row)) {
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foreach ($columnsToConvert as $column) {
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if (array_key_exists($column, $row)) {
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$newTimezone = new DateTimeZone($timezone);
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$utcTimezone = new DateTimeZone("UTC");
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$d = new DateTime($row[$column], $utcTimezone);
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$d->setTimezone($newTimezone);
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$row[$column] = $d->format($format);
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}
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}
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self::convertTimestampsToTimezone($row, $columnsToConvert, $timezone, $format);
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}
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}
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}
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/**
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* Return the end date time in the given timezone
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*
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* @return DateTime
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*/
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public static function getEndDateTime($timezoneString, $days)
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{
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$timezone = new DateTimeZone($timezoneString);
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$now = new DateTime("now", $timezone);
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$now->add(new DateInterval("P".$days."D"));
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$now->setTime(0, 0, 0);
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return $now;
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}
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/**
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* Return a formatted string representing the
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* given datetime in the given timezone
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*
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* @param unknown $datetime the time to convert
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* @param unknown $timezone the timezone to convert to
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* @param string $format the formatted string
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*/
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public static function UTCStringToTimezoneString($datetime, $timezone, $format="Y-m-d H:i:s") {
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$d = new DateTime($datetime, new DateTimeZone("UTC"));
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$timezone = strtolower($timezone);
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$newTimezone = new DateTimeZone($timezone);
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$d->setTimezone($newTimezone);
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return $d->format($format);
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}
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/**
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* Return the timezone offset in seconds for the given timezone
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*
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* @param unknown $userDefinedTimezone the timezone used to determine the offset
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*/
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public static function getTimezoneOffset($userDefinedTimezone) {
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$now = new DateTimeZone($userDefinedTimezone);
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$d = new DateTime("now", $now);
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return $d->format("Z");
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}
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/**
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* This function is used for calculations! Don't modify for display purposes!
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*
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* Convert playlist time value to float seconds
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*
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* @param string $plt
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* playlist interval value (HH:mm:ss.dddddd)
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* @return int
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* seconds
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*/
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public static function playlistTimeToSeconds($plt)
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{
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$arr = preg_split('/:/', $plt);
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if (isset($arr[2])) {
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return (intval($arr[0])*60 + intval($arr[1]))*60 + floatval($arr[2]);
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}
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if (isset($arr[1])) {
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return intval($arr[0])*60 + floatval($arr[1]);
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}
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return floatval($arr[0]);
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}
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/**
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* This function is used for calculations! Don't modify for display purposes!
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*
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* Convert float seconds value to playlist time format
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*
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* @param float $seconds
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* @return string
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* interval in playlist time format (HH:mm:ss.d)
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*/
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public static function secondsToPlaylistTime($p_seconds)
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{
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$info = explode('.', $p_seconds);
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$seconds = $info[0];
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if (!isset($info[1])) {
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$milliStr = 0;
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} else {
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$milliStr = $info[1];
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}
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$hours = floor($seconds / 3600);
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$seconds -= $hours * 3600;
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$minutes = floor($seconds / 60);
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$seconds -= $minutes * 60;
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$res = sprintf("%02d:%02d:%02d.%s", $hours, $minutes, $seconds, $milliStr);
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return $res;
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}
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/**
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* Returns date fields from give start and end teimstamp strings
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* if no start or end parameter is passed start will be set to 1
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* in the past and end to now
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*
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* @param string startTimestamp Y-m-d H:i:s
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* @param string endTImestamp Y-m-d H:i:s
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* @param string timezone (ex UTC) of the start and end parameters
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* @return array (start DateTime, end DateTime) in UTC timezone
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*/
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public static function getStartEnd($startTimestamp, $endTimestamp, $timezone)
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{
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$prefTimezone = Application_Model_Preference::GetTimezone();
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$utcTimezone = new DateTimeZone("UTC");
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$utcNow = new DateTime("now", $utcTimezone);
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if (empty($timezone)) {
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$userTimezone = new DateTimeZone($prefTimezone);
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} else {
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$userTimezone = new DateTimeZone($timezone);
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}
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// default to 1 day
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if (empty($startTimestamp) || empty($endTimestamp)) {
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$startsDT = clone $utcNow;
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$startsDT->sub(new DateInterval("P1D"));
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$endsDT = clone $utcNow;
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} else {
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try {
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$startsDT = new DateTime($startTimestamp, $userTimezone);
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$startsDT->setTimezone($utcTimezone);
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$endsDT = new DateTime($endTimestamp, $userTimezone);
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$endsDT->setTimezone($utcTimezone);
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if ($startsDT > $endsDT) {
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throw new Exception("start greater than end");
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}
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}
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catch (Exception $e) {
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Logging::info($e);
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Logging::info($e->getMessage());
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$startsDT = clone $utcNow;
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$startsDT->sub(new DateInterval("P1D"));
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$endsDT = clone $utcNow;
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}
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}
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return array($startsDT, $endsDT);
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}
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}
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