use vars qw(@day_names);
use POSIX qw(strftime);


my @restaurant_info = (
  #[ "(TaY) Sodexo Linna", "http://www.sodexo.fi/fi-FI/linna/lounas/", "right" ],
  #[ "(TTY) Sodexo Erkkeri", "http://www.sodexo.fi/fi-FI/erkkeri/lounas/", "left" ]
  [ "(TaY) Sodexo Linna", "http://www.sodexo.fi/linna", "", "right", 92],
  [ "(TTY) Sodexo Erkkeri", "http://www.sodexo.fi/erkkeri", "", "left", 100]
);

my ($cur_text, $cur_title, $parse_func, $day_id, $week);
my (@cur_day_foods, @week_foods);

sub sodexo_finish_food {
  chomp $cur_food;
  push @cur_day_foods, utf8_to_8859($cur_food) if ($cur_food ne "");
  $cur_food = "";
}

sub sodexo_finish_day {
  push @week_foods, [@cur_day_foods];
  @cur_day_foods = ();
  $day_id = $day_id + 1;
}


sub utf8_to_8859 {
  $_ = shift;

  s/ä/ä/g;
  s/ö/ö/g;
  s/Ä/Ä/g;
  s/Ö/Ö/g;
  return $_;
}

sub get_sodexo_restaurants {
  my $use_old = shift;
  my $count = 0;
  # Loops restraurants
  foreach my $i (@restaurant_info) {
    my @info = @{$i};
    my $kitchen = $info[4];
    $title = $info[0];
    $cur_title = $title;
    $open_hours = "";
    @week_foods = ();
    my $week = `date +%V`;
    chomp($week);
    # Loop weekdays
    for (my $weekday = 1; $weekday < 7; $weekday++) {

      # Get current unix timestamp and week day
      $s = strftime "%s", localtime;
      $v = strftime "%w", localtime;
      # Calculate current weekday 
      $s = $s + ($weekday - $v)  * 86400;
      $timestr = strftime "%Y/%m/%d", localtime($s);

      my $url = "http://www.sodexo.fi/ruokalistat/output/daily_json/$kitchen/$timestr/fi";
      my $temp_fname = "sodexo$count-$weekday.temp.js";  
      if (!-f $temp_fname || !$use_old) {
        system("wget -q --timeout=10 -O $temp_fname.tmp \"$url\" && mv $temp_fname.tmp $temp_fname");
      }
      if (-f $temp_fname) {
        open(FILE, $temp_fname);
        my $json = do { local $/; <FILE> };
        close(FILE);
        # the file is encapsulated in ({"d": json}); so we have to double parse it
        my $data = from_json($json);
        my $courses = $data->{'courses'};
        # loop different meals
        foreach my $course_info (@$courses) {
          if ($course_info->{'category'} ne 'Aamupala') {
            $cur_food = $course_info->{'title_fi'};
            $cur_food .= " (" . $course_info->{'properties'} . ")" if $course_info->{'properties'};
          }
          sodexo_finish_food();
        }
        sodexo_finish_day();
      }
    }
    push @restaurants, [ $title, $open_hours, $week, [ @week_foods ], \@info ];
    $count++;
  }
  return @restaurants;
}

1;