#! /usr/bin/perl

#
#  Combine scripts in the MathJax project into single-file-load
#  configuration files.
#
#  Usage:  ./combineMJlist-unpacked proj-dir [files.lis]
#

use Cwd;
use FindBin;

$DIR = $FindBin::Bin;
$MJX = shift || getcwd;

$name = $ARGV[0]; $name =~ s!.*/!!;
die "Usage: ./combineMJlist srcdir files.lis\n" unless $name =~ m/\S/;
die "Project directory must contain an unpacked/config directory\n" unless -d "$MJX/unpacked/config";

$outfile = "config/$name"; $outfile =~ s/\.[^.]*/.js/;

@files = ();
while ($file = <>) {
  chomp($file);
  if ($file =~ m/\S/) {
    push (@files,$file);
  } else {
    @config = <>;
    chomp(@config);
    @config = grep {!/^extensions:/} @config;
    while (scalar(@config) && $config[-1] !~ m/\S/) {pop(@config)}
    $config[-1] =~ s/,$// if scalar(@config);
    last;
  }
}

@CONFIG = ();
@JAX = ();
@EXTENSIONS = ();

foreach $file (@files) {
  if ($file =~ m!^jax/(.*)/config.js!) {push(@JAX,"\"$1\"")}
  if ($file =~ m!^extensions/a11y/(.*)!) {push(@EXTENSIONS,"\"[a11y]/$1\"")}
  elsif ($file =~ m!^extensions/(.*)!) {push(@EXTENSIONS,"\"$1\"")}
  if ($file =~ m!^config/(.*)!) {push(@CONFIG,"\"$1\"")}
}

@HUB = ();
push(@HUB,"config: [".join(",",@CONFIG)."]") if scalar(@CONFIG);
push(@HUB,"extensions: [".join(",",@EXTENSIONS)."]") if scalar(@EXTENSIONS);
push(@HUB,"jax: [".join(",",@JAX)."]") if scalar(@JAX);
push(@HUB,join("\n  ",@config)) if scalar(@config);

open(CONFIG,"<","$DIR/template-unpacked.js") || die "Can't open $DIR/template-unpacked.js: $!\n";
@lines = <CONFIG>;
close(CONFIG);
$config = join("",@lines);

$config =~ s!%%% NAME %%%!/MathJax/unpacked/$outfile!;

print "Creating $outfile\n";
open(CONFIG,">","$MJX/unpacked/$outfile") || die "Can't write $MJX/$outfile: $!\n";
print CONFIG $config;

print CONFIG "MathJax.Hub.Config({\n";
print CONFIG "  ",join(",\n  ",@HUB);
print CONFIG "\n});\n\n";

print CONFIG "MathJax.Ajax.loadComplete(\"[MathJax]/$outfile\");\n";

close(CONFIG);

1;