package DADA::Template::Widgets::Admin_Menu;

=pod

=head1 NAME DADA::Template::Widgets::Admin_Menu

=head1 SYNOPSIS

	use DADA:Widgets::Admin_Menu

=head1 DESCRIPTION 

This module creates the Admin Menu for the List Control Panel. It also packs data so 
it can be saved

=head1 SUBROUTINES

=cut


use lib '../';

use DADA::Config qw(!:DEFAULT);  

require Exporter; 
@ISA = qw(Exporter); 
@EXPORT = qw(
make_nav_hashes
check_function_permissions
make_admin_menu
make_feature_menu 
create_save_set
);

use strict; 
use vars qw(@EXPORT);


=pod

=head2 make_nav_hashes

a pretty private sub, returns 2 references to hashes from saved information and defaults

=cut


sub make_nav_hashes { 

my $list_info_ref = shift; 

  my $admin_menu  = $list_info_ref->{admin_menu} || create_save_set(); 
   
        # simple procedural interface
   

	my %NAVS; 
	my %SUBNAVS; 
	if($admin_menu ){
		my @nav_params = split(';', $admin_menu ); 	
		foreach my $this_nav(@nav_params){ 
			if($this_nav =~ /SUBNAV/){ 
				$this_nav =~ s/SUBNAV\-//g;
				my ($name, $value) = split('=', $this_nav); 
				$SUBNAVS{$name} = $value; 
			}else{ 
				$this_nav =~ s/NAV\-//g;
				my ($name, $value) = split('=', $this_nav);
				$NAVS{$name} = $value; 
			}
		}
		
	return (\%NAVS, \%SUBNAVS); 	
	}
}


=pod

=head2 check_function_permissions

	my $function_permissions = check_function_permissions(-List_Ref => \%list_info, 
														  -Function => $args{-Function});
		if ($function_permissions < 1){
			$problems++;
		}

=cut


sub check_function_permissions { 

my %args = ( 
-List_Ref => undef, 
-Function => undef, 
@_); 
my $check = 1;
my ($NAVS, $SUBNAVS) = make_nav_hashes($args{-List_Ref}); 


    my @Global_Admin_Menu_Copy = @$DADA::Config::ADMIN_MENU; 
    
    foreach my $nav(@Global_Admin_Menu_Copy ){ 
		my $nav_entry;
		
		if($nav->{-Title}){ 
		
			if(exists($NAVS->{$nav->{-Title}})){
				$nav->{-Activated} = $NAVS->{$nav->{-Title}}
			}
		
			if(defined($nav->{-Function}) && defined($args{-Function}) && ($nav->{-Activated} == 0) && ($nav->{-Function} eq $args{-Function})){ 
				$check = 0; 
			}
				foreach my $subnav(@{$nav->{-Submenu}}){ 
					my $subnav_entry; 
					if($subnav->{-Title}){ 
			    	if(exists($SUBNAVS->{$subnav->{-Title}})){$subnav->{-Activated} = $SUBNAVS->{$subnav->{-Title}}}
				    if($subnav->{-Activated} == 0 && $subnav->{-Function} eq $args{-Function}){ 
						$check = 0;									
						}    
					}	
				}	
			}
		} 
	
return $check; 

}


=pod

=head2 make_admin_menu
	
		$admin_menu  = DADA::Template::Widgets::Admin_Menu::make_admin_menu('superuser'); 
	 
		$admin_menu  = DADA::Template::Widgets::Admin_Menu::make_admin_menu('user',\%list_info); 


If the superuse is specified, all menu items will be active, if not, what will be 
active will be determined by the \%list_info (the settings) 

this returns an html menu.

=cut


sub make_admin_menu { 

	my $permissions   = shift; 
	my $li            = shift; 
	
	my $ht_admin_menu = []; 
	
	
	my ($NAVS, $SUBNAVS) = make_nav_hashes($li); 
	
	my $ht_entry = []; 

    my @Global_Admin_Menu_Copy = @$DADA::Config::ADMIN_MENU; 

	foreach my $nav(@Global_Admin_Menu_Copy ){ 
	
		next if !$nav->{-Title}; 
		# I don't know...
		if(exists($NAVS->{$nav->{-Title}})){
			$nav->{-Activated} = $NAVS->{$nav->{-Title}}
		}
	
		$nav->{-Activated} = 1 
			if($permissions eq 'superuser');
		
		my $ht_subnav = []; 
		
		foreach my $subnav(@{$nav->{-Submenu}}){ 
		
			next if ! $subnav->{-Title};
		
			#again, what?
			if(exists($SUBNAVS->{$subnav->{-Title}})){
				$subnav->{-Activated} = $SUBNAVS->{$subnav->{-Title}}
			}
			
			$subnav->{-Activated} = 1 
				if($permissions eq 'superuser');

			push(@$ht_subnav, {Activated => $subnav->{-Activated}, Title_URL => $subnav->{-Title_URL}, Title => $subnav->{-Title}, ((exists($li->{disabled_screen_view}) && $li->{disabled_screen_view} eq 'hide') ? (hide_nav => 1,) : (hide_nav => 0,)) }); 

		}	
	
		push(@$ht_entry, {Activated => $nav->{-Activated}, Title_URL => $nav->{-Title_URL}, Title => $nav->{-Title}, SUBNAV => $ht_subnav, ((exists($li->{disabled_screen_view}) && $li->{disabled_screen_view} eq 'hide') ? (hide_nav => 1,) : (hide_nav => 0,)) }); 
		
	}
		require DADA::Template::Widgets; 
	return DADA::Template::Widgets::screen(-screen => 'admin_menu_widget.tmpl', -vars => {NAV => $ht_entry}); 

}


=pod

=head2 make_feature_menu

print make_feature_menu(\%list_info); 

creates a form to allow you to turn on and off features of the admin menu

=cut


sub make_feature_menu { 

	my $list_info_ref = shift; 
	
	my $NAVS = {}; 
	my $SUBNAVS = {}; 
	
	($NAVS, $SUBNAVS) = make_nav_hashes($list_info_ref); 
	
	my $menu; 
	#walk through the complex data structures..
	
	my @Global_Admin_Menu_Copy = @$DADA::Config::ADMIN_MENU; 

	foreach my $nav(@Global_Admin_Menu_Copy ){ 
		my $nav_entry;
		if($nav->{-Title}){ 
			
			#turn off.
			
			
            # *really* Don't understand this line. 
            # I don't understand this line. 
			if(exists($NAVS->{$nav->{-Title}})){
				$nav->{-Activated} = $NAVS->{$nav->{-Title}}
			}
			
			
			if($nav->{-Activated} == 1){ 
					$nav_entry = "<p><input type=\"checkbox\" name='NAV-$nav->{-Title}' checked=\"checked\" value=\"1\" /><strong>$nav->{-Title}</strong>\n";			
				$menu .= $nav_entry;
			}else{
				$nav_entry = "<p><input type=\"checkbox\" name='NAV-$nav->{-Title}' value=\"1\" /><strong>$nav->{-Title}</strong>\n";	
				$menu .= $nav_entry;		
		
			}	
				foreach my $subnav(@{$nav->{-Submenu}}){ 
					my $subnav_entry; 
					if($subnav->{-Title}){ 
					
					#turn off.
			     	if(exists($SUBNAVS->{$subnav->{-Title}})){$subnav->{-Activated} = $SUBNAVS->{$subnav->{-Title}}}
		
						if($subnav->{-Activated} == 1){ 
							$subnav_entry = "<br />&nbsp;<input type=\"checkbox\" name='SUBNAV-$subnav->{-Title}' checked=\"checked\" value=\"1\" />$subnav->{-Title}\n";
						}else{
							$subnav_entry = "<br />&nbsp;<input type=\"checkbox\" name='SUBNAV-$subnav->{-Title}' value=\"1\" />$subnav->{-Title}\n";
						}    
						    $menu .= $subnav_entry;	
					}	
				}	
			$menu .= '</p><hr />';	
			}else{
				$nav_entry = "<p><input type=\"checkbox\" name='NAV-$nav->{-Title}' value=\"1\" /><strong>$nav->{-Title}</strong> five\n";	
				$menu .= $nav_entry;
			}
		} 
	
	return $menu;
}


=pod

=head2 create_save_set

	foreach(@params){$param_hash{$_} = $q->param($_);}	
	my $save_set = create_save_set(\%param_hash); 
	my %new_info = (list => $list, admin_menu => $save_set);
	setup_list(\%new_info); 

creates a packed string to save admin menu information, The format is really weird, 

take mi word for it.


=cut
			
sub create_save_set { 
	 
	my $param_hashref = shift || undef; 
	my $save_set;
	my $prev_info = 1; 
	
	if(!defined($param_hashref)){ 
		$prev_info = 0; 
	}
	
	my @Global_Admin_Menu_Copy = @$DADA::Config::ADMIN_MENU; 

	foreach my $nav(@Global_Admin_Menu_Copy ){
			my $default = 0;
			if($prev_info == 0){ 
			    $default = $nav->{-Activated};
			}
			my $save_nav = $param_hashref->{"NAV-$nav->{-Title}"} || $default; #$nav->{-Activated};
			$save_set .= "NAV-$nav->{-Title}\=$save_nav;";			
			foreach my $subnav(@{$nav->{-Submenu}}){ 
				my $s_default = 0; 
				if($prev_info == 0){ 
				    $s_default = $subnav->{-Activated};
				}
				my $save_subnav = $param_hashref->{"SUBNAV-$subnav->{-Title}"} || $s_default; #|| $subnav->{-Activated};
			       $save_set .= "SUBNAV-$subnav->{-Title}\=$save_subnav;";
			}	 		   
	}	
	return $save_set; 
}

1;


=pod

=head1 COPYRIGHT 

Copyright (c) 1999-2007 
Justin Simoni  
http://justinsimoni.com
All rights reserved. 

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

=cut