package winapi_documentation;

use strict;

my %comment_width;
my %comment_indent;
my %comment_spacing;

sub check_documentation {
    local $_;

    my $options = shift;
    my $output = shift;
    my $win16api = shift;
    my $win32api = shift;
    my $function = shift;

    my $module16 = $function->module16;
    my $module32 = $function->module32;
    my $external_name16 = $function->external_name16;
    my $external_name32 = $function->external_name32;
    my $internal_name = $function->internal_name;
    my $documentation = $function->documentation;
    my $documentation_line = $function->documentation_line;
    my @argument_documentations = @{$function->argument_documentations};

    my $documentation_error = 0;
    my $documentation_warning = 0;
    if($options->documentation_name || 
       $options->documentation_ordinal ||
       $options->documentation_pedantic) 
    {
	my @winapis = ($win16api, $win32api);
	my @modules = ($module16, $module32);
	my @external_names = ($external_name16, $external_name32);
	while(
	      defined(my $winapi = shift @winapis) &&
	      defined(my $external_name = shift @external_names) &&
	      defined(my $module = shift @modules))
	{
	    if($winapi->function_stub($internal_name)) { next; }

	    my @external_name = split(/\s*\&\s*/, $external_name);
	    my @modules = split(/\s*\&\s*/, $module);
	    my @ordinals = split(/\s*\&\s*/, $winapi->function_internal_ordinal($internal_name));

	    my $pedantic_failed = 0;
	    while(defined(my $external_name = shift @external_name) && 
		  defined(my $module = shift @modules) && 
		  defined(my $ordinal = shift @ordinals)) 
	    {
		my $found_name = 0;
		my $found_ordinal = 0;
		foreach (split(/\n/, $documentation)) {
		    if(/^(\s*)\*(\s*)(\@|\S+)(\s*)([\(\[])(\w+)\.(\@|\d+)([\)\]])/) {
			my $external_name2 = $3;
			my $module2 = $6;
			my $ordinal2 = $7;

			if(length($1) != 1 || length($2) < 1 || 
			   length($4) < 1 || $5 ne "(" || $8 ne ")")
			{
			    $pedantic_failed = 1;
			}

			if($external_name eq $external_name2) {
			    $found_name = 1;
			    if("\U$module\E" eq $module2 &&
			       $ordinal eq $ordinal2)
			    {
				$found_ordinal = 1;
			    }
			}
		    }
		}
		if(($options->documentation_name && !$found_name) || 
		   ($options->documentation_ordinal && !$found_ordinal))
		{
		    $documentation_error = 1;
		    $output->write("documentation: expected $external_name (\U$module\E.$ordinal): \\\n$documentation\n");
		}
		
	    }
	    if($options->documentation_pedantic && $pedantic_failed) {
		$documentation_warning = 1;
		$output->write("documentation: pedantic failed: \\\n$documentation\n");
	    }
	}
    }

    if(!$documentation_error && $options->documentation_wrong) {
	foreach (split(/\n/, $documentation)) {
	    if(/^\s*\*\s*(\S+)\s*[\(\[]\s*(\w+)\s*\.\s*([^\s\)\]]*)\s*[\)\]].*?$/) {
		my $external_name = $1;
		my $module = $2;
		my $ordinal = $3;

		my $found = 0;
		foreach my $entry2 (winapi::get_all_module_internal_ordinal($internal_name)) {
		    (my $external_name2, my $module2, my $ordinal2) = @$entry2;
		    
		    if($external_name eq $external_name2 &&
		       lc($module) eq $module2 &&
		       $ordinal eq $ordinal2) 
		    {
			$found = 1;
		    }
		}
		if(!$found) {
		    $output->write("documentation: $external_name (\U$module\E.$ordinal) wrong\n");
		}
	    }
	}
    }

    if($options->documentation_comment_indent) {
	foreach (split(/\n/, $documentation)) {
	    if(/^\s*\*(\s*)\S+(\s*)[\(\[]\s*\w+\s*\.\s*[^\s\)\]]*\s*[\)\]].*?$/) {
		my $indent = $1;
		my $spacing = $2;
		
		$indent =~ s/\t/        /g;
		$indent = length($indent);
		
		$spacing =~ s/\t/        /g;
		$spacing = length($spacing);
		
		$comment_indent{$indent}++;
		if($indent >= 20) {
		    $output->write("documentation: comment indent is $indent\n");
		}
		$comment_spacing{$spacing}++;
	    }
	}
    }

    if($options->documentation_comment_width) {
	if($documentation =~ /(^\/\*\*+)/) {
	    my $width = length($1);

	    $comment_width{$width}++;
	    if($width <= 65 || $width >= 81) {
		$output->write("comment is $width columns wide\n");
	    }
	}
    }

    if($options->documentation_arguments) {
	my $n = 0;
	for my $argument_documentation (@argument_documentations) {
	    $n++;
	    if($argument_documentation ne "") {
		if($argument_documentation !~ /^\/\*\s+\[(?:in|out|in\/out|\?\?\?)\].*?\*\/$/s) {
		    $output->write("argument $n documentation: \\\n$argument_documentation\n");
		}
	    }
	}
    }
}

sub report_documentation {
    my $options = shift;
    my $output = shift;

    if($options->documentation_comment_indent) {
	foreach my $indent (sort(keys(%comment_indent))) {
	    my $count = $comment_indent{$indent};
	    $output->write("*.c: $count functions have comment that is indented $indent\n");
	}
    }

    if($options->documentation_comment_width) {
	foreach my $width (sort(keys(%comment_width))) {
	    my $count = $comment_width{$width};
	    $output->write("*.c: $count functions have comments of width $width\n");
	}
    }
}

1;