#!/usr/bin/perl -T
#########
# Author:        rpettett@cpan.org
# Created:       2007-06-21
# Last Modified: $Date: 2009-06-09 20:17:59 +0100 (Tue, 09 Jun 2009) $
# Id:            $Id: clearpress 338 2009-06-09 19:17:59Z zerojinx $
# $HeadURL: https://clearpress.svn.sourceforge.net/svnroot/clearpress/branches/prerelease-1.26/bin/clearpress $
#
use strict;
use warnings;
use Getopt::Long;
use English qw(-no_match_vars);
use Carp;
use Template;
use Lingua::EN::Inflect qw(PL);
use lib qw(blib/lib lib);
use ClearPress;

our $VERSION = do { my ($r) = q$LastChangedRevision: 338 $ =~ /(\d+)/smx; $r; };
our $ASPECTS = [qw(read list add create edit update)];

local $ENV{PATH} = join q(:), qw(/bin /usr/bin /usr/local/bin /opt/local/bin);

main();
0;


sub main { ## no critic (complexity)
  my $opts      = {};
  my @argvcopy = @ARGV;

  GetOptions($opts,
	     'new=s',
	     'driver=s',
	     'yes',
	     'help',
	     'version',
	    );

  if($opts->{help}) {
    print qq(Usage Example:
  $0 --new GrandKids 'child->family child(name,birthday:date) family(name,address,city,state,zip)'\n) or croak qq[Error printing: $ERRNO];
    return 1;
  }

  if($opts->{version}) {
    print q(ClearPress v).ClearPress->VERSION.qq(\n) or croak qq[Error printing: $ERRNO];
    return 1;
  }

  ($opts->{driver}) = ($opts->{driver} || 'mysql') =~ /(SQLite|mysql)/smx;

  if(!$opts->{new}) {
    croak q(Please specify --new <application-name>);
  }

  my ($app) = $opts->{new} =~ /^([[:lower:]][[:lower:][:digit:]_]+)$/smxi;
  $app    ||= q();

  if($app ne $opts->{new}) {
    croak q(Invalid characters in application name, only /[a-z][a-z\\d_]+/i allowed.);
  }

  my $all_structure = shift @ARGV;

  my $schema     = {};
  my $driver_pkg = "ClearPress::driver::$opts->{driver}";

  eval "require $driver_pkg"; ## no critic (ProhibitStringyEval RequireCheckingReturnValueOfEval)
  my $driver = $driver_pkg->new();

  for my $structure (split /\s+/smx, $all_structure) {
    if($structure =~ /\S+[(]\S+[)]/smx) {
      #########
      # table definition
      #
      my ($table, $columns) = $structure =~ /(\S+)[(](\S+)[)]/smx;

      for my $column (split /,/smx, $columns) {
	my ($name, $type) = split /:/smx, $column;
	$name           ||= $column;
	$type             = $driver->type_map($type||'char(128)');
	$schema->{$table}->{fields}->{$name} = $type;

	print {*STDERR} qq($table has $name of type $type\n) or croak qq[Error printing: $ERRNO];
      }

    } elsif($structure =~ /\S+\->\S+/smx) {
      #########
      # relationship
      #
      my ($one, $many) = $structure =~ /(\S+)\->(\S+)/smx;
      push @{$schema->{$one}->{has_a}},     $many;
      push @{$schema->{$many}->{has_many}}, $one;
      print {*STDERR} qq($one has a $many\n$many has many @{[PL($one)]}\n) or croak qq[Error printing: $ERRNO];
    }
  }

  my $template_cache = {};
  read_templates($template_cache);

  create_application({
		      'template_cache' => $template_cache,
		      'application'    => $app,
		      'views'          => [keys %{$schema}],
		      'yes'            => exists $opts->{yes},
		      'driver'         => $opts->{driver},
		      'schema'         => $schema,
		     });

  my $precedence = [map  { $_->{name} }
		    sort _sorter
		    values %{$schema}];

  my $cfg = qq($app/config.layout);
  open my $fh, q(>), $cfg or croak qq[Error opening $cfg: $ERRNO];
  print {$fh} $PROGRAM_NAME, (map { qq( '$_') } @argvcopy), qq(\n) or croak qq[Error printing: $ERRNO];
  close $fh or croak qq[Error closing $cfg: $ERRNO];

  if($opts->{driver} eq 'mysql') {
    #########
    # mysql message
    #
    print qq(
You now need to configure your database.
1. Check and/or modify $app/data/config.ini
2. If necessary create a database, something like this:
  mysqladmin -uroot create $app
3. cat @{[map { "$app/data/schema/$_.mysql \\\n      " } @{$precedence}]} | mysql -uroot $app

Note you may need to create your new schema in order, depending on your foreign key constraints.
) or croak qq[Error printing: $ERRNO];

  } else {
    #########
    # SQLite message
    #
    print qq(
You now need to configure your database.
1. Check and/or modify $app/data/config.ini
2. If necessary create a database, something like this:
  cat $app/data/schema/*.SQLite | sqlite3 $app/$app
) or croak qq[Error printing: $ERRNO];
  }

  return 1;
}

sub read_templates {
  my $cache = shift;
  local $RS = "\n-- \n";

  if(!scalar keys %{$cache}) {
    for my $field (qw(config schema_mysql schema_SQLite application_sa application_cgi util model view view_error),
		   (map { "aspect_$_" } @{$ASPECTS}),
		   qw(actions warnings stylesheet)) {
      my $str          = <DATA>;
      $str             =~ s/$RS//smx;
      $cache->{$field} = \$str;
      print qq(Read @{[length($str)]} bytes for $field\n) or croak qq[Error printing: $ERRNO];
    }
  }
  return 1;
}

sub create_application {
  my $opts   = shift;
  my $app    = $opts->{application};
  my $cache  = $opts->{template_cache};
  my $driver = $opts->{driver};
  my $schema = $opts->{schema};
  my $tt     = Template->new({
			     EVAL_PERL => 1,
			     TAG_STYLE => 'asp',
			    });

  for my $view (@{$opts->{views}}) {
    $schema->{$view}->{name} = $view;
    $opts->{name}     = $view;
    $opts->{fields}   = [map { {name => $_,
				type => $schema->{$view}->{fields}->{$_}};
                               } sort keys %{$schema->{$view}->{fields} }];
    $opts->{has_many} = $schema->{$view}->{has_many} || [];
    $opts->{has_a}    = $schema->{$view}->{has_a}    || [];

    process_template($opts, $tt, $cache->{"schema_$driver"}, "$app/data/schema",    "$view.$driver");

    process_template($opts, $tt, $cache->{model},  "$app/lib/$app/model", "$view.pm");
    process_template($opts, $tt, $cache->{view},   "$app/lib/$app/view",  "$view.pm");

    for my $aspect (@{$ASPECTS}) {
      process_template($opts, $tt, $cache->{"aspect_$aspect"}, "$app/data/templates", "${view}_$aspect.tt2");
    }
  }

  process_template($opts, $tt, $cache->{util},            "$app/lib/$app",  'util.pm');

  process_template($opts, $tt, $cache->{view_error},      "$app/lib/$app/view",  'error.pm');

  process_template($opts, $tt, $cache->{config},          "$app/data",           'config.ini');
  process_template($opts, $tt, $cache->{application_cgi}, "$app/cgi-bin",        $app);
  process_template($opts, $tt, $cache->{application_sa},  "$app/bin",            $app);
  process_template($opts, $tt, $cache->{stylesheet},      "$app/htdocs",         "$app.css");
  process_template($opts, $tt, $cache->{actions},         "$app/data/templates", 'actions.tt2');
  process_template($opts, $tt, $cache->{warnings},        "$app/data/templates", 'warnings.tt2');

  return 1;
}

sub _yn {
  my ($default) = @_;
  local $RS     = "\n";
  my $response  = <>;
  chomp $response;
  $response   ||= $default;
  return (uc $response eq uc $default)
}

sub process_template {
  my ($opts, $tt, $tmpl, $path, $fn) = @_;

  $fn = "$path/$fn";

  if(!$opts->{yes} && -e $fn) {
    print "$fn exists. Overwrite? [y/N] " or croak qq[Error printing: $ERRNO];
    _yn('N') and return 1;
  }

  system qw(mkdir -p), $path;
  open my $fh, q[>], $fn or croak "Opening $fn: $ERRNO";
  $tt->process($tmpl, $opts, $fh) or croak "Template error building $fn: ".$tt->error(). "\nTemplate was:\n".${$tmpl}."\n";
  close $fh or croak "Closing $fn: $ERRNO";
  return 1;
}

sub _sorter {
  my $a_deps = $a->{has_a} || [];
  my $b_deps = $b->{has_a} || [];

  if(scalar grep { $_ eq $b->{name} } @{$a_deps}) {
    return 1;
  }

  if(scalar grep { $_ eq $a->{name} } @{$b_deps}) {
    return -1; ## no critic (ProhibitMagicNumbers)
  }

  return (scalar @{$a_deps} <=> scalar @{$b_deps});
}

__END__
[application]
name=<% application %>
views=<% PERL %>print join q(,), @{$stash->get('views')}<% END %>
stylesheet=/<% application %>.css

[live]
driver=<% driver %>
dbhost=localhost
dbname=<% application %>
dbuser=root

[dev]
driver=<% driver %>
dbhost=localhost
dbname=<% application %>
dbuser=root

[test]
driver=<% driver %>
dbhost=localhost
dbname=<% application %>
dbuser=root

-- 
<%# mysql table schema %>
DROP TABLE IF EXISTS <% name %>;
CREATE TABLE `<% name %>` (
  `id_<% name %>` bigint(20) unsigned NOT NULL auto_increment,
<% FOREACH field = fields %>  `<% field.name %>` <% field.type %> NOT NULL,
<% END %><% FOREACH rel = has_a %>
  `id_<% rel %>` bigint(20) unsigned NOT NULL,
  KEY `<% name %>_<% rel %>` (`id_<% rel %>`),
  CONSTRAINT `<% name %>_<% rel %>` FOREIGN KEY (`id_<% rel %>`) REFERENCES `<% rel %>` (`id_<% rel %>`),
<% END %>
  PRIMARY KEY  (`id_<% name %>`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- 
<%# SQLite table schema %>
DROP TABLE IF EXISTS <% name %>;
CREATE TABLE <% name %> (
<% FOREACH field = fields %>  <% field.name %> <% field.type %>,
<% END %><% FOREACH rel = has_a %>  id_<% rel %> integer,
<% END %>  id_<% name %> integer primary key autoincrement
);
<% FOREACH rel = has_a %>
CREATE INDEX <% name %>_id_<% rel %> on <% name %> (id_<% rel %>);<% END %>
-- 
#!/usr/bin/perl -T
<%# standalone application %>
use warnings;
use strict;
use lib qw(lib);
use Getopt::Long;
use Readonly;

BEGIN {
  $ENV{DOCUMENT_ROOT} = './htdocs';
}

use ClearPress::controller;

use <% application %>::view::error;
use <% application %>::util;
<% FOREACH view = views %>
use <% application %>::view::<% view %>;
use <% application %>::model::<% view %>;<% END %>

our $VERSION = do { my ($r) = q$LastChangedRevision: 338 $ =~ /(\d+)/smx; $r; };
Readonly::Scalar our $PORT => 8080;

my $opts = {};
GetOptions($opts, qw(port=s));
my ($port) = ($opts->{port} || $PORT) =~ /(\d+)/smx;

<% application %>::sa->new($port)->run;

0;

package <% application %>::sa;
use base qw(HTTP::Server::Simple::CGI);
use strict;
use warnings;
use Data::Dumper;
use Carp;
use English qw(-no_match_vars);

sub handle_request {
  my ($self, $cgi) = @_;

  my $EXTN = {
	      css  => 'text/css',
	      xml  => 'text/xml',
	      gif  => 'image/gif',
	      png  => 'image/png',
	      jpg  => 'image/jpeg',
	      txt  => 'text/plain',
	      html => 'text/html',
              js   => 'text/javascript',
	     };

  my $util = <% application %>::util->new({
					   cgi => $cgi,
					  });
  print "HTTP/1.0 200 OK\n";

  my ($fn) = "htdocs$ENV{REQUEST_URI}" =~ m|([a-z\d_/\.\-%]+)|mix;
  $fn      =~ s|\.\./||smxg;

  if(-f $fn) {
    my ($ext) = $fn =~ /\.([^\.]+)$/smx;

    my $type  = $EXTN->{lc $ext} || 'application/octet-stream';
    print qq(Content-type: $type\n\n);
    carp qq(Serving static file $fn as $ext / $type);
    open my $fh, $fn or croak "Opening $fn: $ERRNO";
    while(<$fh>) {
      print;
    }
    close $fh or croak "Closing $fn: $ERRNO";

  } else {
    ClearPress::controller->handler($util);
  }

  return 1;
}

sub print_banner {
  my $self = shift;
  print q[<% application %> development server up and running at http://localhost:].$self->port()."/\n";
  return 1;
}

1;
-- 
#!/usr/bin/perl -T
<%# CGI or ModPerl::Registry application %>
use warnings;
use strict;
use lib qw(lib);
use ClearPress::controller;

use <% application %>::util;
use <% application %>::view::error;
<% FOREACH view = views %>
use <% application %>::view::<% view %>;
use <% application %>::model::<% view %>;<% END %>

our $VERSION = do { my ($r) = q$LastChangedRevision: 338 $ =~ /(\d+)/smx; $r; };

main();
0;

sub main {
  my $util = <% application %>::util->new();
  ClearPress::controller->handler($util);
}
-- 
<%# template:util %>
package <% application %>::util;
use strict;
use warnings;
use base qw(ClearPress::util);

1;
-- 
<%# template:model %>
package <% application %>::model::<% name %>;
use strict;
use warnings;
use base qw(ClearPress::model);

__PACKAGE__->mk_accessors(__PACKAGE__->fields());
__PACKAGE__->has_a([qw(<% FOREACH supentity = has_a %><% supentity %> <% END %>)]);
__PACKAGE__->has_many([qw(<% FOREACH subentity = has_many %><% subentity %> <% END %>)]);
__PACKAGE__->has_all();

sub fields {
  return qw(id_<% name %>
	    <% FOREACH rel = has_a %>id_<% rel %> <% END %>
	    <% FOREACH field = fields %><% field.name %> <% END %>);
}

1;
-- 
<%# template:view %>
package <% application %>::view::<% name %>;
use strict;
use warnings;
use base qw(ClearPress::view);

1;
-- 
<%# template:view:error %>
package <% application %>::view::error;
use strict;
use warnings;
use base qw(ClearPress::view::error);

1;
-- 
<%# template:read - single entity %>
[<a href="[% model.id_<% name %> %];edit">Edit</a>]
<h2><% name %> <% aspect %></h2>
<table><% FOREACH field = fields %>
 <tr><th><% field.name %></th><td>[% model.<% field.name %> %]</td></tr><% END %>
<% FOREACH subentity = has_a %> <tr>
  <th><% subentity %></th>
  <td>[<a href="[% SCRIPT_NAME %]/<% subentity %>/[% model.id_<% subentity %> %]">details</a>]</td>
 </tr><% END %>
</table>
<% FOREACH subentity = has_many %>
[% PROCESS <% subentity %>_list.tt2 %]
<% END %>

<% FOREACH subentity = has_many %>
 [<a href="[% SCRIPT_NAME %]/<% subentity %>/;add?id_<% name %>=[% model.id_<% name %> %]">Add <% subentity %></a>]
<% END %>
-- 
<%# template:list - multiple entities %>
<h2><% PERL %>print Lingua::EN::Inflect::PL("<% name %>");<% END %> <% aspect %></h2>
<table id="<% name %>_list">
 <caption><% name %> list</caption>
 <thead><tr><% FOREACH field = fields %><th><% field.name %></th><% END %></tr></thead>
 <tbody>
[% FOREACH <% name %> = model.<% PERL %>print Lingua::EN::Inflect::PL("<% name %>");<% END %> %]
<tr>
 <% FOREACH field = fields %><td>[% <% name %>.<% field.name %> %]</td><% END %>
 <td>[<a href="[% SCRIPT_NAME %]/<% name %>/[% <% name %>.id_<% name %> %]">details</a>]</td>
</tr>
[% END %]
 </tbody>
</table>

-- 
<%# template:add form %>
<h2><% name %> <% aspect %></h2>
<form method="post" action="[% SCRIPT_NAME %]/<% name %>/">
 <ul><% FOREACH rel = has_a %>
  <li>
   <label for="id_<% rel %>">id_<% rel %></label>
   <input type="hidden" id="[% model.id_<% rel %> %]" name="id_<% rel %>" value="[% model.id_<% rel %> %]" />[% model.id_<% rel %> %]
  </li>
<% END %><% FOREACH field = fields %>  <li>
   <label for="<% field.name %>"><% field.name %></label>
   <input type="text" id="<% field.name %>" name="<% field.name %>" value="[% model.<% field.name %> %]" />
  </li><% END %>
 </ul>
 <input type="submit" value="Add" />
</form>
-- 
<%# template:create - add submission action %>
<h2><% name %> <% aspect %></h2>
<% name %> saved ok. Click <a href="[% SCRIPT_NAME %]/<% name %>/[% model.id_<% name %> %]">here</a> to continue.
<script type="text/javascript">
 document.location.href="[% SCRIPT_NAME %]/<% name %>/[% model.id_<% name %> %]";
</script>
-- 
<%# template:edit form %>
<h2><% name %> <% aspect %></h2>
<form method="post" action="[% model.id_<% name %> %]">
 <ul>
<% FOREACH field = fields %>  <li>
   <label for="<% field.name %>"><% field.name %></label>
   <input type="text" id="<% field.name %>" name="<% field.name %>" value="[% model.<% field.name %> %]" />
  </li><% END %>
 </ul>
 <input type="submit" value="Update" />
</form>
-- 
<%# template:update - edit submission action %>
<h2><% name %> <% aspect %></h2>
<% name %> updated ok. Click <a href="[% SCRIPT_NAME %]/<% name %>/[% model.id_<% name %> %]">here</a> to continue.
<script type="text/javascript">
 document.location.href="[% SCRIPT_NAME %]/<% name %>/[% model.id_<% name %> %]";
</script>
-- 
<%# template:actions %>
<h1><% application %></h1>
<ul id="actions">
<% FOREACH view = views %> <li>[<a href="[% SCRIPT_NAME %]/<% view %>/">List <% PERL %>print Lingua::EN::Inflect::PL("<% view %>")<% END %></a>]</li><% END %>
<% FOREACH view = views %> <li>[<a href="[% SCRIPT_NAME %]/<% view %>/;add">Add <% view %></a>]</li><% END %>
</ul>
-- 
<%# template:warnings %>
[% IF view.warnings %]
<ul class="warnings">[% FOREACH warning = view.warnings %]
 <li><% warning %></li>[% END %]
</ul>
[% END %]
-- 
<%# css %><%# colour suite courtesy of colourblender.com %><% SET one   = '#C57167' %><% SET two   = '#78443E' %><% SET three = '#C49F66' %><% SET four  = '#78613E' %><% SET five  = '#3B3B3B' %><% SET six   = '#C4C4C4' %>
html{background:<% five %>;padding:0 20px 0 20px}
body{background:<% six %>;padding:20px 10px 0 10px;font-family:helvetica,arial,sans-serif;min-height:500px}
h1,h2,h3,h4,h5{color:<% two %>;font-family:garamond,times,serif;font-style:italic}
a{color:<% two %>;padding:2px}
a:hover{background:<% two %>;color:<% six %>}
thead tr{background:<% five %>}
thead th{color:<% six %>}
tbody tr.tabrow1{background:<% three %>}
tbody tr.tabrow2{background:<% four %>}
table caption{font-size:smaller;text-transform:capitalize}
table tr{padding:0;margin:0}
table td,table th{margin:0;padding:2px}
table th{text-align:left;text-transform:capitalize}
form li label{display:block;float:left;width:120px}
form li input{float:left}
form li{clear:both}
form ul{list-style-type:none}
ul#actions{list-style-type:none;padding:0}
ul#actions li{margin:0;display:inline}
-- 
=head1 NAME

clearpress - A utility for initialising applications built with the
ClearPress framework.

=head1 USAGE

 scripts/clearpress -new <application-name> \
    'ent1->ent2 \
     ent1(field1:type,field2,field3:type) \
     ent2(field1,field2,field3)'

=head1 DESCRIPTION

 This script initialises an application hierarchy using the ClearPress framework.

=head1 REQUIRED ARGUMENTS

=head1 OPTIONS

 -new <application-name>
   Call my application 'application-name'.

 -yes
   Don't prompt for overwriting files.

 -driver <mysql>
   No effect (yet). Will determine what sort of database schema and
   automatic-id-allocation plan to use

=head1 DIAGNOSTICS

=head1 EXIT STATUS

 0 on success

=head1 CONFIGURATION

 All via command-line options.

=head1 DEPENDENCIES

=over

=item strict

=item warnings

=item Getopt::Long

=item English

=item Carp

=item Template

=item Lingua::EN::Inflect

=item lib

=item ClearPress

=back

=head1 INCOMPATIBILITIES

=head1 BUGS AND LIMITATIONS

=head1 AUTHOR

Roger Pettett, E<lt>rpettett@cpan.orgE<gt>

=head1 LICENSE AND COPYRIGHT

Copyright (C) 2008 Roger Pettett

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.4 or,
at your option, any later version of Perl 5 you may have available.

=cut