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package installer::windows::featurecomponent;

use installer::converter;
use installer::existence;
use installer::exiter;
use installer::files;
use installer::globals;
use installer::windows::idtglobal;

#################################################################################
# Collecting all pairs of features and components from the files collector
#################################################################################

sub create_featurecomponent_table_from_files_collector
{
	my ($featurecomponenttableref, $filesref) = @_;

	for ( my $i = 0; $i <= $#{$filesref}; $i++ )
	{
		my $onefile = ${$filesref}[$i];
		
		my $filecomponent = $onefile->{'componentname'};
		my $filemodules = $onefile->{'modules'};

		if ( $filecomponent eq "" ) 
		{
			installer::exiter::exit_program("ERROR: No component defined for file $onefile->{'Name'}", "create_featurecomponent_table_from_files_collector");
		}
		if ( $filemodules eq "" ) 
		{
			installer::exiter::exit_program("ERROR: No modules found for file $onefile->{'Name'}", "create_featurecomponent_table_from_files_collector");
		}

		my $filemodulesarrayref = installer::converter::convert_stringlist_into_array(\$filemodules, ",");

		for ( my $j = 0; $j <= $#{$filemodulesarrayref}; $j++ )
		{
			my %featurecomponent = ();
			
			my $onemodule = ${$filemodulesarrayref}[$j];
			$onemodule =~ s/\s*$//;
			$featurecomponent{'Feature'} = $onemodule;
			$featurecomponent{'Component'} = $filecomponent;
			
			# Attention: Features are renamed, because the maximum length is 38.
			# But in the files collector ($filesref), the original names are saved.

			installer::windows::idtglobal::shorten_feature_gid(\$featurecomponent{'Feature'});
			
			$oneline = "$featurecomponent{'Feature'}\t$featurecomponent{'Component'}\n";
			
			# control of uniqueness
			
			if (! installer::existence::exists_in_array($oneline, $featurecomponenttableref))
			{		
				push(@{$featurecomponenttableref}, $oneline);
			}			
		}
	}			
}

#################################################################################
# Collecting all pairs of features and components from the registry collector
#################################################################################

sub create_featurecomponent_table_from_registry_collector
{
	my ($featurecomponenttableref, $registryref) = @_;

	for ( my $i = 0; $i <= $#{$registryref}; $i++ )
	{
		my $oneregistry = ${$registryref}[$i];
		
		my $registrycomponent = $oneregistry->{'componentname'};
		my $registrymodule = $oneregistry->{'ModuleID'};

		if ( $registrycomponent eq "" ) 
		{
			installer::exiter::exit_program("ERROR: No component defined for registry $oneregistry->{'gid'}", "create_featurecomponent_table_from_registry_collector");
		}
		if ( $registrymodule eq "" ) 
		{
			installer::exiter::exit_program("ERROR: No modules found for registry $oneregistry->{'gid'}", "create_featurecomponent_table_from_registry_collector");
		}

		my %featurecomponent = ();
			
		$featurecomponent{'Feature'} = $registrymodule;
		$featurecomponent{'Component'} = $registrycomponent;
		
		# Attention: Features are renamed, because the maximum length is 38.
		# But in the files collector ($filesref), the original names are saved.

		installer::windows::idtglobal::shorten_feature_gid(\$featurecomponent{'Feature'});
			
		$oneline = "$featurecomponent{'Feature'}\t$featurecomponent{'Component'}\n";
			
		# control of uniqueness
			
		if (! installer::existence::exists_in_array($oneline, $featurecomponenttableref))
		{		
			push(@{$featurecomponenttableref}, $oneline);
		}			
	}				
}

#################################################################################
# Collecting all feature that are listed in the featurecomponent table.
#################################################################################

sub collect_all_feature
{
	my ($featurecomponenttable) = @_;
	
	my @allfeature = ();

	for ( my $i = 3; $i <= $#{$featurecomponenttable}; $i++ )	# beginning in line 4
	{
		my $oneline = ${$featurecomponenttable}[$i];
		
		if ( $oneline =~ /^\s*(\S+)\s+(\S+)\s*$/ )
		{
			my $feature = $1;

			if (! installer::existence::exists_in_array($feature, \@allfeature)) { push(@allfeature, $feature); }			
		}
	}
	
	return \@allfeature;
}

#################################################################################
# On Win98 and Win Me there seems to be the problem, that maximum 817
# components can be added to a feature. Even if Windows Installer 2.0
# is used.
#################################################################################

sub check_number_of_components_at_feature
{
	my ($featurecomponenttable) = @_;

	my $infoline = "\nChecking number of components at features. Maximum is 817 (for Win 98 and Win Me)\n";
	push(@installer::globals::logfileinfo, $infoline);		

	my $allfeature = collect_all_feature($featurecomponenttable);

	for ( my $i = 0; $i <= $#{$allfeature}; $i++ )
	{
		my $onefeature = ${$allfeature}[$i];
		my $featurecomponents = 0;
	
		for ( my $j = 0; $j <= $#{$featurecomponenttable}; $j++ )
		{
			if ( ${$featurecomponenttable}[$j] =~ /^\s*\Q$onefeature\E\s+(\S+)\s*$/ ) { $featurecomponents++; }
		}

		if ( $featurecomponents > 816 )
		{
			installer::exiter::exit_program("ERROR: More than 816 components ($featurecomponents) at feature $onefeature. This causes problems on Win 98 and Win Me!", "check_number_of_components_at_feature");
		}
		
		# Logging the result
		
		$infoline = "Number of components at feature $onefeature : $featurecomponents\n"; 
		push(@installer::globals::logfileinfo, $infoline);		
	}

	$infoline = "\n";
	push(@installer::globals::logfileinfo, $infoline);
}
	
#################################################################################
# Creating the file FeatureC.idt dynamically
# Content: 
# Feature Component 
#################################################################################

sub create_featurecomponent_table
{
	my ($filesref, $registryref, $basedir) = @_;
	
	my @featurecomponenttable = ();
	my $infoline;
	
	installer::windows::idtglobal::write_idt_header(\@featurecomponenttable, "featurecomponent");

	# This is the first time, that features and componentes are related
	# Problem: How about created profiles, configurationfiles, services.rdb
	# -> simple solution: putting them all to the root module
	# Otherwise profiles and configurationfiles cannot be created the way, they are now created
	# -> especially a problem for the configurationfiles! # ToDo
	# Very good: All ProfileItems belong to the root
	# services.rdb belongs to the root anyway.

	# At the moment only the files are related to components (and the files know their modules).
	# The component for each file is written into the files collector $filesinproductlanguageresolvedarrayref
			
	create_featurecomponent_table_from_files_collector(\@featurecomponenttable, $filesref);

	create_featurecomponent_table_from_registry_collector(\@featurecomponenttable, $registryref);

	# Additional components have to be added here

	# Checking, whether there are more than 817 components at a feature

	check_number_of_components_at_feature(\@featurecomponenttable);

	# Saving the file
	
	my $featurecomponenttablename = $basedir . $installer::globals::separator . "FeatureC.idt";
	installer::files::save_file($featurecomponenttablename ,\@featurecomponenttable);
	$infoline = "Created idt file: $featurecomponenttablename\n"; 
	push(@installer::globals::logfileinfo, $infoline);

}

1;