use strict;
use warnings;
use CGI;
use File::Find;
use Data::Dumper;

use vars qw(@DIRS $ROOT_DIR %ID_TO_STRING %STRING_TO_ID);

$ROOT_DIR = "/some/path/etc";

@DIRS = qw
(
    Admin
    Backuprequests
    Magic Network
    NewServer
    PatchManagement
    Security
    Serverlist
    ServerRetire
);


# make sure vals are lowercase, to do a reverse lookup later on
%ID_TO_STRING =
(
    c_strict   => "use strict;",
    c_warnings => "use warnings;",
    c_cgi      => "use cgi",
    c_dbi      => "use dbi",
);

# so we can get a clean id from the match
%STRING_TO_ID = reverse %ID_TO_STRING;



main();


sub main
{
    my $match = init_match();
    my $dirs  = init_dirs();

    my %script = ();
    my $wanted = sub 
    {   
        my $path = $File::Find::dir . "/" . $_;
        
        if (-f $path)
        {
            my %matches = ();
            open(FILE, "<$path") || die $!;
            while (my $line = <FILE>)
            {
                while ($line =~ m/($match)/ig)
                {
                    # store results as hash keys so we only get one of each
                    $matches{$STRING_TO_ID{lc $1}} = 1;
                }
            }
            close FILE;
            
            $script{$path} = [ keys %matches ];
         }
    };
    
    find($wanted, @$dirs);
    
    # output to log
    warn Dumper \%script;
}



sub init_dirs
{
    my $cgi = new CGI;   
    my $dirs = [ $cgi->param('dirs') ];    
    $dirs->[0] ||= "";   
    @$dirs = @DIRS if $dirs->[0] eq "ALL";
    my @fullPaths = map {  "$ROOT_DIR/$_"  } @$dirs;
    
    return \@fullPaths;
}



sub init_match
{
    my $cgi = new CGI;

    my @matches = ();
    for my $sel (keys %ID_TO_STRING)
    {
        push @matches, $ID_TO_STRING{$sel} if $cgi->param($sel);
    }
    
    return join "|", @matches;
}