#!/usr/bin/perl

if(!$ARGV[0]) {
    print <<MOO
Usage: lang.pl <english file> <translated file>
MOO
;
    exit;
}

my %ids, @ids;
open(ENG, "<$ARGV[0]");
while(<ENG>) {
    if($_ =~ /^ *\#/) {
        # comment
        next;
    }
    $_ =~ s/\r//g;
    if($_ =~ /^ *([a-z]+): *(.*)/) {
        ($var, $value) = ($1, $2);
  #      print "$var => $value\n";

        $set{$var} = $value;

        if($var eq "new") {
            # the last one for a single phrase
            $all{$set{'id'}, 'desc'}=$set{'desc'};
            $all{$set{'id'}, 'eng'}=$set{'eng'};
            $all{$set{'id'}, 'voice'}=$set{'voice'};

            $ids{$set{'id'}}=1;
            push @ids, $set{'id'};
            undef %set;
        }
    }
}
close(ENG);

undef %set;
my $cblock = 1;
open(NEW, "<$ARGV[1]");
while(<NEW>) {
    $_ =~ s/\r//g;

    if($_ =~ /^ *\#/) {
        # comment
        if($_ !~ /^ *\#\#\#/) {
            # no special ### comment -> keep it
            if(!$cblock) {
                print "\n";
                $cblock = 1;
            }
            print $_;
        }
        next;
    }
    $cblock = 0;

    if($_ =~ /^ *([a-z]+): *(.*)/) {
        ($var, $value) = ($1, $2);

        $set{$var} = $value;

        if($var eq "new") {
            # the last one for a single phrase

            if(!$ids{$set{'id'}}) {
                print "\n### ".$set{'id'}." was not found in the english file!\n";
                next;
            }

            print "\nid: ".$set{'id'}."\n";

            if($set{'desc'} ne $all{$set{'id'}, 'desc'}) {
                print "### Description changed! Previous description was:\n",
                "### \"".$set{'desc'}."\"\n";
                print "desc: ".$all{$set{'id'}, 'desc'}."\n";
            }
            else {
                print "desc: ".$set{'desc'}."\n";
            }

            if($set{'eng'} ne $all{$set{'id'}, 'eng'}) {
                print "### English phrase was changed! Previous translation was made on:\n",
                "### ".$set{'eng'}."\n";
                print "eng: ".$all{$set{'id'}, 'eng'}."\n";
            }
            else {
                print "eng: ".$set{'eng'}."\n";
            }

            if($set{'id'} =~ /^VOICE_/) { # voice only, compare desc:
                if($set{'desc'} ne $all{$set{'id'}, 'desc'}) {
                    print "### Voice only: description changed! Voice set to english. Previous voice was:\n",
                    "### ".$set{'voice'}."\n";
                    $set{'voice'} = $all{$set{'id'}, 'voice'};
                }
            }
            else { # standard entry, compare eng:
                if($set{'eng'} ne $all{$set{'id'}, 'eng'}
                   #only if either original or translated voice: is non-empty
                   and ($set{'voice'} !~ /^(\"\")? *$/
                        or $all{$set{'id'}, 'voice'} !~ /^(\"\")? *$/)) {
                    print "### English phrase was changed! Voice set to english. Previous voice was:\n",
                    "### ".$set{'voice'}."\n";
                    $set{'voice'} = $all{$set{'id'}, 'voice'};
                }
            }
            if($set{'voice'} =~ /^(\"\")? *$/
               and $all{$set{'id'}, 'voice'} !~ /^(\"\")? *$/) {
                print "### Voice not found in previous translation. Set to english.\n";
                $set{'voice'} = $all{$set{'id'}, 'voice'};
            }
            print "voice: ".$set{'voice'}."\n";

            print "new: ".$set{'new'}."\n";

            $ids{$set{'id'}}=0;
            undef %set;
        }
    }
}
close(NEW);

# output new phrases not already translated , in english.lang order
for(@ids) {
    if($ids{$_}) {
        my $id=$_;
        print "\nid: $_\n";
        print "desc: ".$all{$id, 'desc'}."\n";
        print "eng: ".$all{$id, 'eng'}."\n";
        print "### Not previously translated\n";
        print "voice: ".$all{$id, 'voice'}."\n";
        print "new: \n";
    }
}