#!/usr/bin/perl
use strict;
use warnings;
use CGI qw( :standard );
use HTML::CalendarMonth;
use HTML::AsSubs;
use HTML::Element;
use Date::Calc qw( :all );

# @dates has already been sorted
my @dates = ( 730000, 731158, 731159, 731160, 731161, 731178, 735000 );
my ( @cals, @days );

print start_html(-title => 'Calendars');

while ( defined $dates[0] ) {
  my $days = $dates[0];
  my ( $year, $month, $day ) = Add_Delta_Days( 1, 1, 1, $days - 1 );
  my $new_c = new HTML::CalendarMonth ( year => $year, month => $month );  
  @dates = CreateCal( $year, $month, @dates );
  push( @cals, $new_c );
}

# Embolden headers
foreach my $calnum ( 0 .. $#cals ) {
   my $cal = $cals[$calnum];
   my @color = @{ $days[$calnum] }; # the days to be colored
   $cal->item( $cal->month, $cal->year )->wrap_content( font({ size => '2' }) );
   $cal->item( $cal->dayheaders )->wrap_content( font({ size => '1' }) );   
   $cal->item( @color )->wrap_content( font({ size => 4, color => 'red' }) );
}

# Generate container table
my $t = new HTML::ElementTable ( maxrow => 1, maxcol => 4 );

# Populate container table
for my $calnum ( 0 .. $#cals ) {
   $t->cell( 0, $calnum )->push_content( $cals[$calnum] );
}

print $t->as_HTML;

print end_html();

exit(0);

sub CreateCal {
  my ( $cyear, $cmonth, @dates ) = @_;
  my ( @day, @temp );
  foreach my $days ( @dates ) {
    my ( $year, $month, $day ) = Add_Delta_Days( 1, 1, 1, $days - 1 );
    if ( $year == $cyear && $month == $cmonth ) {
      push ( @day, $day );
    } else {
      push ( @temp, $days );
    }
  }
  push ( @days, [ @day ] ); # store the days of each calendar
  return @temp;
}