=head1 NAME

SuikaWiki::Output::HTTP --- SuikaWiki: HTTP or HTTP CGI output support

=head1 DESCRIPTION

This module provides HTTP or HTTP CGI outputing support.

This module is part of SuikaWiki.

=cut

package SuikaWiki::Output::HTTP;
use strict;
our $VERSION = do{my @r=(q$Revision: 1.1 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};

my %Status = (
  200 => q(OK),
  301 => q(Permanently Redirect),
  302 => q(Found),
  303 => q(See Other),
  307 => q(Temporary Redirect),
  401 => q(Authorization Required),
  403 => q(Forbidden),
  404 => q(Not Found),
  500 => q(Internal Server Error),
  503 => q(Service Temporary Unavailable),
);

=head1 METHODS

=over 4

=item $http = SuikaWiki::Output::HTTP->new

Constructs new instance of HTTP output implementation

=cut

sub new ($;%) {
  my $self = bless {header_field => [],
                    negotiate_header_field => {Negotiate => 1},
                    entity => {language => [], 
                               media_type => 'application/octet-stream'},
                   }, shift;
  my %opt = @_;
  $self->{wiki} = $opt{wiki};
  $self->{view} = $opt{view};
  $self->{viewobj} = $opt{viewobj};
  $self;
}

sub add_header_field ($$$;%) {
  my ($self, $name => $body, %opt) = @_;
  push @{$self->{header_field}}, {name => $name, body => $body};
}

sub add_negotiate_header_field ($$) {
  my ($self, $name) = @_;
  $self->{negotiate_header_field}->{$name} = 1;
}

sub set_expires ($%) {
  my ($self, %opt) = @_;
  if ($opt{time}) {
    ## TODO: use rfc1123-time
    push @{$self->{header_field}}, {name => 'Expires', 
                                    body => scalar gmtime $opt{time}};
  } elsif (defined $opt{delta}) {
    $self->{expires_delta} = $opt{delta} + 0;
  }
}

sub set_redirect_uri ($%) {
  
}

sub set_last_modified ($%) {
  my ($self, %opt) = @_;
  $self->{lastmodified_time} = $opt{time};
}

sub append_to_body ($$) {
  my ($self, $s) = @_;
  $self->{entity}->{body} .= $s;
}

sub output ($;%) {
  my ($self, %opt) = @_;
  my $nl;
  binmode STDOUT;
  $| = 1;
  
  my $status = qq(@{[$self->{status_code}||200]} @{[$self->{status_phrase}||$Status{$self->{status_code}||200}]});
  if ($opt{output} eq 'http-cgi') {
    $nl = "\n";
    print "Status: $status$nl";
  } else {
    $nl = "\x0D\x0A";
    print "$status HTTP/1.1$nl";
  }
  
  for (@{$self->{header_field}}) {
    print "$_->{name}: $_->{body}$nl";
  }
  
  my $time = time;
  print "Date: @{[scalar gmtime $time]}$nl";
  if (defined $self->{expires_delta}) {
    print "Expires: @{[scalar gmtime ($time + $self->{expires_delta})]}$nl";
  }
  if (defined $self->{lastmodified_time}) {
    print "Last-Modified: @{[scalar gmtime $self->{lastmodified_time}]}$nl";
  } else {
    print "Last-Modified: @{[scalar gmtime $time]}$nl";
  }
  print "Vary: ".join (', ', keys %{$self->{negotiate_header_field}})."$nl";
  
  my $body = '' . $self->{entity}->{body};
  ## TODO:
  $body = &main::code_convert (\$body, $self->{entity}->{charset});
  
  if (($self->{entity}->{media_type} eq 'application/rdf+xml')
      && (index ($self->{view}->{wiki}->{var}->{client}->{user_agent_name},
                 'Gecko') > -1)) {
    print "Content-Type: application/xml";
  } else {
    print "Content-Type: $self->{entity}->{media_type}";
  }
  if ($self->{entity}->{charset}) {
    if ($self->{view}->{wiki}->{var}->{client}->{user_agent_name}
        =~ m#Mozilla/[12]\.#) {
      print qq(; charset="@{[{qw/euc-jp x-euc-jp shift_jis x-sjis/}
                             ->{$self->{entity}->{charset}}
                             || $self->{entity}->{charset}]}");
    } elsif ($self->{view}->{wiki}->{var}->{client}->{user_agent_name}
             =~ m#Mozilla/0\.|Infomosaic#) {
    } else {
      print qq(; charset="$self->{entity}->{charset}");
    }
  }
  print $nl;
  
  for (join ', ', @{$self->{entity}->{language}||[]}) {
    print "Content-Language: $_$nl" if $_;
  }
  print "Content-Length: @{[length $body]}$nl";
  print $nl;
  print $body;
}

=item $self->{entity}->{charset}
=item $self->{entity}->{language} = [...]
=item $self->{entity}->{media_type}

=back

=head1 TODO

Use manakai.

=head1 LICENSE

Copyright 2003 Wakaba <w@suika.fam.cx>

This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.

=cut

1; # $Date: 2003/10/05 11:55:29 $