#!/usr/bin/perl
# This program uses the po plugin's internals to convert the po files that
# it generates back into translated wiki source files that can be used as a
# underlay for a non-English wiki.
use warnings;
use strict;
use IkiWiki;

# Load the passed setup file and initialize ikiwiki config.
%config=IkiWiki::defaultconfig();
require IkiWiki::Setup;
IkiWiki::Setup::load(shift);
IkiWiki::loadplugins();
IkiWiki::checkconfig();

require IkiWiki::Render;
IkiWiki::srcdir_check();
my ($files, $pages)=IkiWiki::find_src_files();

foreach my $file (@$files) {
	my $page=pagename($file);
	$pagesources{$page}=$file; # used by po plugin functions
}

foreach my $lang (@{$config{po_slave_languages}}) {
	my ($ll, $name)=IkiWiki::Plugin::po::splitlangpair($lang);
	$config{destdir}="../underlays/locale/$ll";

	foreach my $file (@$files) {
		my $page=pagename($file);
		my ($masterpage, $lang) = IkiWiki::Plugin::po::_istranslation($page);
		next unless defined $lang && $lang eq $ll;
		
		my $content=IkiWiki::Plugin::po::po_to_markup($page, readfile(srcfile($file)));
		# avoid wasting space if the page is not translated at all
		my $mastercontent=readfile(srcfile($pagesources{$masterpage}));
		if ($content ne $mastercontent) {
			writefile($masterpage.".".$config{default_pageext},
				$config{destdir}, $content);
		}
	}
}