use vars qw(@day_names);
use JSON;

my @restaurant_info = (
  [ "(TaY) Amica Minerva", "http://www.amica.fi/minerva", "", "middle", "http://www.amica.fi/modules/json/json/Index?costNumber=0815" ],
  [ "(TTY) Ravintola Reaktori", "http://www.amica.fi/reaktori", "", "middle", "http://www.amica.fi/modules/json/json/Index?costNumber=0812" ]
);

sub utf8_to_8859 {
  $_ = shift;

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

sub parse_amica {
  my ($fname, $info_ref) = @_;
  open(FILE, $fname);
  my $json = do { local $/; <FILE> };
  close(FILE);
  
  my $title = @{$info_ref}[0];
  my $week = `date +%V`;
  my @cur_day_foods = ();
  my @week_foods = ();

  my $data = from_json($json);
  my $MenusForDays = $data->{'MenusForDays'};
  foreach my $MenuForDay (@$MenusForDays) {
    my $SetMenus = $MenuForDay->{'SetMenus'};
    foreach my $SetMenu (@$SetMenus) {
      my $Components = $SetMenu->{'Components'};
      foreach my $Component (@$Components) {
        $cur_food .= "\n" if $cur_food ne "";
        $cur_food .= $Component;
      }
      push @cur_day_foods, utf8_to_8859($cur_food) if ($cur_food ne "");
      $cur_food = "";
    }
    push @week_foods, [@cur_day_foods];
    @cur_day_foods = ();
  }

  return [ $title, "", $week, [ @week_foods ], $info_ref ];
}

sub get_amica_restaurant {
  my $use_old = shift;
  my $count = 0;
  my @restaurants = ();
  my $weekDay = `date +%w`;
  chomp($weekDay);
  my $first_day = $weekDay == 1 
    ? `date --date="today" +%Y-%m-%d`
    : `date --date="last monday" +%Y-%m-%d`;
  chomp($first_day);
  my $last_day = $weekDay == 0
    ? `date --date="today" +%Y-%m-%d`
    : `date --date="next sunday" +%Y-%m-%d`;
  chomp($last_day);
  foreach my $i (@restaurant_info) {
    my @info = @{$i};
    my $temp_fname = "amica$count.temp.html";
    my $url = "${info[4]}&firstDay=$first_day&lastDay=$last_day&language=fi";
    if (!-f $temp_fname || !$use_old) {
      system("wget -q --timeout=10 -O $temp_fname.tmp '$url' && mv $temp_fname.tmp $temp_fname") if ($url ne "");
    }
    if (-f $temp_fname) {
      $info[4] = $url;
      push @restaurants, parse_amica($temp_fname, \@info);
    }
    $count++;
  }
  return @restaurants;
}

1;