#! /usr/bin/perl
###
### Setup program for Odin services
###
### (c) 2015 Mark Wooding
###

###----- Licensing notice ---------------------------------------------------
###
### This file is part of the `odin.gg' service, `odin-cgi'.
###
### `odin-cgi' is free software; you can redistribute it and/or modify
### it under the terms of the GNU Affero General Public License as
### published by the Free Software Foundation; either version 3 of the
### License, or (at your option) any later version.
###
### `odin-cgi' is distributed in the hope that it will be useful,
### but WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
### GNU Affero General Public License for more details.
###
### You should have received a copy of the GNU Affero General Public
### License along with `odin-cgi'; if not, see
### <http://www.gnu.org/licenses/>.

use lib "lib";
use Odin;

my $db = Odin::open_db;
my %newlang, %oldlang;

open my $fh, "-|", "highlight", "-p" or die "highlight: $!";
while (<$fh>) {
  my ($descr, $lang) = /^(.*\S)\s*:\s*(\S+)(?:\s.*|)$/;
  next if !defined $lang or $lang eq "txt";
  $newlang{"hl:$lang"} = $descr;
}
close $fh or die "close highlight: $! $?";
$newlang{"txt"} = "Plain text";
$newlang{"md"} = "Markdown";

Odin::xact {
  my $h = $db->selectall_hashref
    ("SELECT lang, descr FROM odin_pastebin_lang", "lang");
  for my $k (keys %$h) { $oldlang{$k} = $h->{$k}{descr}; }
  for my $lang (keys %oldlang) {
    if (!exists $newlang{$lang}) {
      print ";; delete stale language `$lang' (`$oldlang{$lang}')\n";
      $db->do("DELETE FROM odin_pastebin_lang WHERE lang = ?", undef, $lang);
    }
  }
  for my $lang (keys %newlang) {
    if (!exists $oldlang{$lang}) {
      print ";; insert new language `$lang' (`$newlang{$lang}')\n";
      $db->do("INSERT INTO odin_pastebin_lang (lang, descr) VALUES (?, ?)",
	      undef, $lang, $newlang{$lang});
    } elsif ($oldlang{$lang} ne $newlang{$lang}) {
      print ";; change description for `$lang' ",
	"(`$oldlang{$lang}' -> `$newlang{$lang}')\n";
      $db->do("UPDATE odin_pastebin_lang SET descr = ? WHERE lang = ?",
	      undef, $newlang{$lang}, $lang);
    }
  }
} $db;