#!/usr/bin/perl

use Getopt::Long;
use IO::Handle;

STDERR->autoflush(1);
STDOUT->autoflush(1);

my $tag = "pix2pixhd_" . time;
my $module = "pix2pixhd";
my $endpoint = undef;
GetOptions (
  "tag"  => \$tag,
  "module" => \$module,
  "endpoint" => \$endpoint
)
or die("Error in command line arguments\n");

$tag =~ s/\....$//;

if (! -e "results/$tag") {
  print "usage: $0 [tag]\n";
  exit(1);
}

chdir('results/$tag');

my $i = 0;
my $ls  = `ls -1v *.png`;
my @lines = split('\n', $ls);
my $pwd = `pwd`;
chomp $pwd;
$pwd .= '/';
print $pwd . "\n";

mkdir('./tmp');

for my $line (@lines) {
  chomp $line;
  system('ln', '-s', $pwd . $line, sprintf('./tmp/frame_%05d.png', $i));
  $i += 1;
}

system("ffmpeg",
  "-i", "./tmp/frame_%05d.png",
  "-y", "-c:v", "libx264", "-vf", "fps=25", "-pix_fmt", "yuv420p",
  "-s", "1024x512",
  "../../renders/" . $tag . ".mp4"
);

if (defined $endpoint) {
  print("upload to $endpoint\n");
  system("curl",
    "-X", "POST",
    "-F", "module=$module",
    "-F", "activity=live",
    "-F", "generated=true",
    "-F", "dataset=$tag",
    "-F", "file=@../../renders/$tag.mp3",
    $endpoint
  );
}

print "rendered: $tag.mp4\n";

END {
  system('rm', '-rf', 'tmp');
  chdir('../..');
}