#!/usr/bin/perl -w

use strict;
use warnings;

use JSON;
use YAML::Tiny;
use Getopt::Long;
use Email::MIME;
use Email::Sender::Simple qw(sendmail);
use File::Basename;
use utf8;

my $conf = {};
my $opt = {
  config => '{{ jitsi_root_dir }}/etc/jibri/finalize.yml'
};

GetOptions(
  "config=s" => \$opt->{config}
);

sub send_mail {
  my ($subject, $dest, $body) = @_;
  my $mail = Email::MIME->create(
    header_str => [
      From    => $conf->{from},
      To      => $dest,
      Subject => $subject
    ],
    attributes => {
      charset  => 'utf-8',
      encoding => 'base64'
    },
    body_str => $body
  );
  sendmail($mail);
}

# Read config file
if (-e $opt->{config}){
  my $yaml = YAML::Tiny->read( $opt->{config} )
    or die "Config file " . $opt->{config} . " is invalid\n";
  if ( not $yaml->[0] ) {
    die "Config file " . $opt->{config} . " is invalid\n";
  }
  $conf = $yaml->[0];
}

$conf->{notify} ||= [];
my $recording = $ARGV[0];

my $metadata = {};
if (-e "$recording/metadata.json"){
  open(my $jst, "$recording/metadata.json") or die "$!";
  local $/;
  $metadata = from_json(<$jst>);
}

my $video = undef;
opendir ( DIR, $recording ) || die "Error in opening dir $recording\n";
while( (my $filename = readdir(DIR))) {
  if ($filename =~ m/\.mp4$/){
    $video = basename($filename);
    last;
  }
}
closedir(DIR);

foreach my $participant (@{$metadata->{participants}}){
  push @{$conf->{notify}}, $participant->{user}->{id};
}

if (defined $video){
  foreach my $dest (@{$conf->{notify}}){
    send_mail(
      "Enregistrement Jitsi Meet",
      $dest,
      "L'enregistrement vidéo est disponible à l'adresse $conf->{base_url}/" .
      basename($recording) . "/$video\n"
    );
  }
}