use strict;
package main;
binmode STDOUT; binmode STDIN;
our $WIKI;
require SuikaWiki::Plugin;
our %embed_command = ( # Map, main
	form	=> qr/\[\[\#form(?:\(([A-Za-z0-9-]+)\))?:'((?:[^'\\]|\\.)*)':'((?:[^'\\]|\\.)*)'(?::'((?:[^'\\]|\\.)*)')?\]\]/,
);
our $database = bless {}, 'wiki::dummy';
require SuikaWiki::Name::Space;
require SuikaWiki::SrcFormat;

# [to be obsolete]
sub do_comment {
    my ($content) = $main::database{$main::form{mypage}};
    my $default_name;	## this code is not strict.
    $default_name = $1 if $content =~ /default-name="([^"]+)"/;
    my @time = gmtime (time);
    my $datestr = sprintf '[WEAK[%04d-%02d-%02d %02d:%02d:%02d +00:00]]', $time[5]+1900,$time[4]+1,@time[3,2,1,0];
    my $namestr = $main::form{myname} || $default_name || &Resource('WikiForm:WikiComment:DefaultName');
    ($namestr = '', $datestr = '') if $main::form{myname} eq 'nodate';
    if ($namestr =~ /^(?:>>)?[0-9]/) {
      $namestr = qq( ''$namestr'': );
    } elsif (length $namestr) {
      $namestr = qq( ''[[$namestr]]'': );
    }
    my $anchor = &get_new_anchor_index ($content);
    my $i = 1;  my $o = 0;
    $content =~ s{(\[\[\#r?comment\]\])}{
      my $embed = $1;
      if ($i == $main::form{comment_index}) {
        if ($embed ne '[[#rcomment]]') {
          $embed = "- [$anchor] $datestr$namestr$main::form{mymsg}\n$embed";  $o = 1;
        } else {
          $embed .= "\n- [$anchor] $datestr$namestr$main::form{mymsg}";  $o = 1;
        }
      }
      $i++; $embed;
    }ge;
    unless ($o) {
      $content = "#?SuikaWiki/0.9\n\n" unless $content;
      $content .= "\n" unless $content =~ /\n$/s;
      $content .= "- [$anchor] $datestr$namestr$main::form{mymsg}\n";
    }
    $main::form{__comment_anchor_index} = $anchor;
    if ($main::form{mymsg} || $main::form{myname}) {
        $main::form{mymsg} = $content;
        $main::form{mytouch} = 'on';
        &do_write;
    } else {	## Don't write
        #$main::form{mycmd} = 'default';
        #&do_view;
      die "No comment specified";
    }
}

# [move to SuikaWiki::Plugin::WikiForm]
sub get_new_anchor_index ($) {
    my $content = shift;
    my $anchor = 0;
    $content =~ s/^(?:[-=]+\s*)?\[([0-9]+)\]/$anchor = $1 if $1 > $anchor; $&/mge;
    $anchor + 1;
}

# [move to SuikaWiki::Plugin::WikiForm]
sub do_wikiform {
    my $content = $main::database{$main::form{mypage}};
    my $anchor = &get_new_anchor_index ($content);
    my $write = 0;
    my $i = 1;
    $content =~ s{$embed_command{form}}{
	my ($embed, $wfname, $template, $option) = ($&, $1, $3, $4);
	if (($wfname && $wfname eq $main::form{wikiform_targetform})
	    || $i == $main::form{wikiform_index}) {
	    $template =~ s/\\([\\'])/$1/g;
	    $option =~ s/\\([\\'])/$1/g;
	    my $param = bless {depth=>10}, 'SuikaWiki::Plugin';
	    $param->{page} = $main::form{mypage};
	    $param->{form_index} = $i;
	    $param->{form_name} = $wfname;
	    $param->{anchor_index} = $anchor;
	    $param->{argv} = \%main::form;
	    $param->{default_name} = $1 if $content =~ /default-name="([^"]+)"/;
            $param->{default_name} ||= &Resource('WikiForm:WikiComment:DefaultName');
	    SuikaWiki::Plugin->formatter ('form_option')->replace ($option, $param);
            my $t = 1;
            for (keys %{$param->{require}||{}}) {
                (undef $t, last) unless length $param->{argv}->{'wikiform__'.$_};
            }
	    $t = SuikaWiki::Plugin->formatter ('form_template')->replace ($template, $param) if $t;
	    if (length $t) {
		if ($param->{output}->{reverse}) {
		    $embed .= "\n" . $t;
		} else {
		    $embed = $t . "\n" . $embed;
		}
		$write = 1;
                $main::form{__comment_anchor_index} = $anchor
                  if $param->{anchor_index_};  ## $anchor is used!
            }
            $main::form{__wikiform_anchor_index} = $i;
            undef $main::form{wikiform_targetform};  ## Make sure never to match
            undef $main::form{wikiform_index};       ## with WikiForm in rest of page!
	}
	$i++; $embed;
    }ge;
    unless ($write) {
      #$content = "#?SuikaWiki/0.9\n\n" unless $content;
      #$content .= "\n" unless $content =~ /\n$/s;
      #
    }
    if ($write) {
        $main::form{mymsg} = $content;
        $main::form{mytouch} = 'on';
        &do_write;
    } else {	## Don't write!
        #$main::form{mycmd} = 'default';
        #&do_view;
      die "No content specified";
    }
}

# [to be obsolete] ->Message::MIME::Charset
sub code_convert {
  require Jcode;
  my ($contentref, $code, $srccode) = @_;
  $code ||= $WIKI->{config}->{charset}->{internal};
  for ($code, $srccode) {
    if    ($_ eq 'euc-jp') { $_ = 'euc' }
    elsif ($_ eq 'iso-2022-jp') { $_ = 'jis' }
    elsif ($_ eq 'utf-8') { $_ = 'utf8' }
    elsif ($_ eq 'shift_jis') { $_ = 'sjis' }
  }
  if ($code eq 'iso-8859-1') {
    return $$contentref; ## TODO:
  }
  $$contentref = Jcode->new ($contentref, $srccode)
    ## Normalize FULLWIDTH characters and IDEOGRAPHIC SPACE
                      ->tr ("\xA3\xB0-\xA3\xB9\xA3\xC1-\xA3\xDA\xA3\xE1-\xA3\xFA\xA1\xF5\xA1\xA4\xA1\xA5\xA1\xA7\xA1\xA8\xA1\xA9\xA1\xAA\xA1\xAE\xA1\xB0\xA1\xB2\xA1\xBF\xA1\xC3\xA1\xCA\xA1\xCB\xA1\xCE\xA1\xCF\xA1\xD0\xA1\xD1\xA1\xDC\xA1\xF0\xA1\xF3\xA1\xF4\xA1\xF6\xA1\xF7\xA1\xE1\xA1\xE4\xA1\xE3\xA1\xA1\xA2\xAF\xA2\xB0\xA2\xB2\xA2\xB1\xA1\xA1\xC0" => q(0-9A-Za-z&,.:;?!`^_/|()[]{}+$%#*@=>< '"~-))
                      ->tr (qq(\x8E\xDE\x8E\xDF) => qq(\xA1\xAB\xA1\xAC))
                      ->h2z
                      ->$code;
  return $$contentref;
}

# [to be obsolete] ->Message::Field::Date : Map
sub _rfc3339_date ($) {
  my @time = gmtime (shift);
  sprintf '%04d-%02d-%02dT%02d:%02d:%02d+00:00', $time[5]+1900,$time[4]+1,@time[3,2,1,0];
}

# [obsolete] ->SuikaWiki::SrcFormat : SuikaWiki09 plugin
sub convert_format ($$$;%) {
  my ($content, $d => $t, %option) = @_;
  my $f = SuikaWiki::Plugin->format_converter ($d => $t);
  if (ref $f) {
    $option{content} = $content;
    $option{from} = $d;
    $option{to} = $t;
    &$f ({}, bless (\%option, 'SuikaWiki::Plugin'));
  } elsif ($option{-error_no_return}) {
    return undef;
  } elsif ($t =~ /HTML|xml/) {
    if (length $content) {
my $NS_XHTML1 = 'http://www.w3.org/1999/xhtml';
      my $r = Message::Markup::XML::Node->new
        (type => '#element', namespace_uri => $NS_XHTML1, local_name => 'pre');
      $r->append_text ($content);
      return $r;
    } else {
      return '';
    }
  } else {
    $content;
  }
}

package SuikaWiki::Plugin;
## Obsolete
sub magic_and_content ($$) {
  my ($magic, $page) = ('', $_[1]);
  $magic = $1 if $page =~ s!^((?:\#\?|/\*|<\?)[^\x02\x0A\x0D]+)[\x02\x0A\x0D]+!!s;
  ($magic, $page);
}

## Obsolete
sub get_data ($$$$;%) {
    my ($self, $prop, $key, %opt) = @_;
    ## TODO: common interface to WikiDB
    ## TODO: error recovering
    $main::WIKI->{db}->get ($prop => $key);
}

package wiki::transitional::uri_param;
require Tie::Hash;
our @ISA = 'Tie::Hash';

sub TIEHASH ($@) {
  bless {http => $_[1]}, $_[0];
}

sub FETCH ($$) {
  my ($self, $key) = @_;
  exists $self->{val}->{$key} ?
    $self->{val}->{$key}:
    $self->{http}->parameter ($key);
}

sub STORE ($$$) {
  my ($self, $key, $val) = @_;
  $self->{val}->{$key} = $val;
}

sub DELETE ($$) {
  my ($self, $key) = @_;
  $self->{val}->{$key} = undef;
}

sub EXISTS ($$) {
  my ($self, $key) = @_;
  exists $self->{val}->{$key} ?
    1:
    defined $self->{http}->parameter ($key);
}

package main;
our $VERSION = do{my @r=(q$Revision: 1.20 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
  push @{$WIKI->{event}->{setting_initial_variables}}, sub {
    my $wiki = shift;
    $wiki->{implementation_version} = 'hcs'.$VERSION;
    
    ## Error output
    require SuikaWiki::Output::CGICarp;
    $SuikaWiki::Output::CGICarp::CUSTOM_REASON_TEXT
      = 'Internal WikiEngine Error';
    CGI::Carp::set_message (sub {
      my $msg = shift;
      #$msg =~ s/&/&amp;/g;
      #$msg =~ s/</&lt;/g;
      my $wiki_name_version = $wiki->{implementation_name} .'/'. $wiki->version;
      for ($wiki_name_version) { s/&/&amp;/g; s/</&lt;/g;
                                 s/([^\x20-\x7E])/sprintf '&#x%02X;',
                                                          ord $1/g; };
      print STDOUT <<EOH;
<!DOCTYPE html SYSTEM>
<title>500 Internal WikiEngine Error</title>
<h1>Internal WikiEngine Error</h1>
<p>$msg</p>
<address>$wiki_name_version</address>
EOH
    });
    
    $wiki->{var}->{db}->{read_only}->{'#default'} = 1;
    
    require SuikaWiki::Input::HTTP;
    $wiki->{input} = SuikaWiki::Input::HTTP->new;
    $wiki->{input}->{decoder}->{'#default'} = sub {
      my ($http, $s, $temp_params) = @_;
      return main::code_convert (\$s, $wiki->{config}->{charset}->{internal},
                                 lc (@{$temp_params->{_charset_}||[]}[0])
                                 || $wiki->{config}->{charset}->{uri_param});
    };
    $wiki->{var}->{client}->{user_agent_name}
      = $wiki->{input}->meta_variable ('HTTP_USER_AGENT');
    $wiki->{var}->{client}->{used_for_negotiate} = ['User-Agent'];
    
    ## TODO: PATH_INFO support
    my $page = $wiki->{input}->meta_variable ('QUERY_STRING');
    if ($page && !(index ($page, '=') > -1)) {
      $page =~ tr/+/ /;
      $page =~ s/%([0-9A-Fa-f][0-9A-Fa-f])/pack 'C', hex $1/ge;
      $page = main::code_convert 
        (\$page, $wiki->{config}->{charset}->{internal},
         $wiki->{config}->{charset}->{uri_query});
    } else {
      $page = $wiki->{input}->parameter ('mypage');
    }
    

    ## TODO: SuikaWiki 3 WikiName
    $page =~ tr/\x00-\x20\x7F//d;
    $page = SuikaWiki::Name::Space::normalize_name ($page);
    if ($page) {
      $wiki->{var}->{page} = [split '//', $page];
    } else {
      $wiki->{var}->{page} = $wiki->{config}->{page}->{Default};
    }
 
    ## Mode
    my $mode = $wiki->{input}->parameter ('mode')
            || $wiki->{input}->parameter ('mycmd') ## for compatibility with
            || 'default';                          ## YukiWiki and SuikaWiki 2
    $mode =~ tr/-/_/;
    if ($mode eq 'default' || $mode =~ /[^0-9A-Za-z_]/) {
      ## BUG: this code is not strict
      my $cookie = $wiki->{input}->meta_variable ('HTTP_COOKIE');
      if ($cookie =~ /SelectedMode=([0-9A-Za-z_-]+)/) {
        $mode = $1; $mode =~ tr/-/_/;
      } else {
        $mode = 'read';
      }
      push @{$wiki->{var}->{client}->{used_for_negotiate}}, 'Cookie';
    }
    $wiki->{var}->{mode} = $mode;
    
    ## Transitional variables
    tie %main::form, 'wiki::transitional::uri_param', $wiki->{input};
    $main::UA = $wiki->{var}->{client}->{user_agent_name};
    $main::form{mypage} = join '//', @{$wiki->{var}->{page}};
    $main::form{mycmd} = $mode;
  };
  
  push @{$WIKI->{event}->{view_in_mode}}, sub {
    my ($wiki, $opt) = @_;
    my $arg = {condition => {mode => $opt->{mode} || '-error',
                             output => 'http-cgi',
                             http_method => $opt->{method} || 'GET'}};
    my $viewobj = $wiki->{view}->instantiate ($opt->{mode} || '-error', $arg);
    if (ref $viewobj) {
      $viewobj->main ($arg);
    } elsif ($opt->{mode} ne '-error') {
      $wiki->view_in_mode (mode => '-error', method => 'GET');
        ## TODO: cache control for non-GET
    } else {
      die "Some error happens.  Additionally, error reporting mode not defined";
    }
  };

## Initialization of various functions
  $WIKI->init_variables;  
  $WIKI->init_plugin;
  $WIKI->init_view;
  $WIKI->{view}->register_common_modes;

## Error handlers
use SuikaWiki::DB::Util::Error;
my $catcher = catch SuikaWiki::DB::Util::Error with {
  my $err = shift;
  my $err_msg = $err->text;
    $err_msg = caller (3) . '-->' . caller (2) . '-->' . caller (1)
             . ($err->{-method} ? '->'.$err->{-method} : '')
             . ': '
             . (defined $err->{-file} ? $err->{-file} . ': ' : '')  
             . (defined $err->{-prop} ? $err->{-prop} . ': ' : '')
             . (defined $err->{-key} ? join ('//', @{$err->{-key}}) . ': ' : '')
             . $err_msg;
    if ($WIKI->{config}->{path_to}->{db__content__error_log}) {
      open LOG, '>>', $WIKI->{config}->{path_to}->{db__content__error_log};
        print LOG scalar (gmtime), " @{[$$]} {$err->{def}->{level}}: ",
                  $err_msg, "\n";
      close LOG;
    }
    if ($err->{def}->{level} eq 'fatal' or $err->{def}->{level} eq 'stop') {
      require Carp;
      local $Carp::Verbose = 1;
      Carp::croak $err_msg;
    }
} catch SuikaWiki::View::Implementation::error with {
  my $err = shift;
  exit if $err->{type} eq 'ERROR_REPORTED';
  $err->throw;
};

$WIKI->{config}->{catch}->{formatter_view}
  = catch Message::Util::Formatter::error with {
  my $err = shift;
  my $wiki = $err->{-option}->{param}->{wiki};
  SuikaWiki::Plugin->module_package ('Error')
                   ->reporting_formatting_template_error ($err, $wiki);
  $wiki->view_in_mode (mode => '-error', method => 'GET');
  throw SuikaWiki::View::Implementation::error
    type => 'ERROR_REPORTED';
};

$WIKI->{config}->{catch}->{formatter_view_error}
  = catch Message::Util::Formatter::error with {
  my $err = shift;
  my $wiki = $err->{-option}->{param}->{wiki};
  SuikaWiki::Plugin->module_package ('Error')
                   ->reporting_formatting_template_error ($err, $wiki);
  $wiki->view_in_mode (mode => '-error-error', method => 'GET');
  throw SuikaWiki::View::Implementation::error
    type => 'ERROR_REPORTED';
};

## Main
try {
  $WIKI->view_in_mode
    (mode => $WIKI->{var}->{mode},
     method => $WIKI->{input}->meta_variable ('REQUEST_METHOD'));
} $catcher;
exit;
END {
  try {
    $WIKI->exit;
  } $catcher;
};

=head1 NAME

lib/suikawiki.pl --- SuikaWiki : WikiEngine driver for HTTP CGI

=head1 LICENSE

Copyright 2000-2003 Wakaba <w@suika.fam.cx>, et. al

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

=cut

1; # $Date: 2003/12/06 02:22:10 $