#! /usr/bin/perl

# I am trying to convert the seconds of the sms database into a
# reasonable date. 
# But there is a problem left: the daylight saving time (Sommerzeit vs Winterzeit)

use warnings;
use strict;

use Date::Calc qw(Localtime Day_of_Week Day_of_Week_to_Text);

my %date_pairs = (
	391263207 => "Sonntag, 26.05.2013 - 13:13:27", 
	410000659 => "Sonntag, 29.12.2013 - 10:04:19",
	410891318 => "Mittwoch, 08.01.2014 - 17:28:38",
	412528640 => "Montag, 27.01.2014 - 16:17:20",
	413028709 => "Sonntag, 02.02.2014 - 11:11:49",
	414241970 => "Sonntag, 16.02.2014 - 12:12:50",
	433494560 => "Samstag, 27.09.2014 - 09:09:20"
);


foreach my $key ( keys %date_pairs ) {
	print "="x130;
	my $timestamp = $key;
	my ($year,$month,$day, $hour,$min,$sec, $doy,$dow,$dst) =
          Localtime($timestamp);
	print "\nOriginal Vars:\nTimestamp is: $timestamp\nYear: $year, Month: $month, Day: $day, Hour: $hour, Minutes: $min, Seconds: $sec, Day of Year: $doy, Day of Week: $dow, Daylight saving: $dst \n","_"x130,"\n";

	$year += 31;
	$dow = Day_of_Week($year,$month,$day);
	my $lang = 3; # this is for German language

	my $dow_name = Day_of_Week_to_Text($dow,$lang);

	my $calculated_date = sprintf "%s, %02s.%02s.%d - %02s:%02s:%02s", $dow_name, $day, $month, $year, $hour, $min, $sec;

	print "Transformed Vars:\nYear: $year, Month: $month, Day: $day, Hour: $hour, Minutes: $min, Seconds: $sec, Day of Year: $doy, Day of Week: $dow, Daylight saving: $dst \nCalculated Date:\t$calculated_date\nExpected Date:\t\t$date_pairs{$key}\n";
	
}

print "="x130;