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<?php

function parse($name) {
  $inhalt = explode("-",$name);
  $arch = array_pop($inhalt);
  $pkgrel = array_pop($inhalt);
  $pkgver = array_pop($inhalt);
  $pkgname = implode("-",$inhalt);
  return array(
    "filename" => $name,
    "pkgname" => $pkgname,
    "pkgver" => $pkgver,
    "pkgrel" => $pkgrel,
    "arch" => $arch
  );
};

$f = fopen("packages", "r");
while (!feof($f))
  $soll[] = trim(fgets($f));
fclose($f);

$f = popen("find ~archlinuxewe/os -type f -name '*.pkg.tar.zst.sig' -printf '%f\n'", "r");
while (!feof($f))
  $ist[] = substr(trim(fgets($f)),0,-16);
pclose($f);

$ist = array_map('parse', $ist);
$soll = array_map('parse', $soll);

$pkgs = array();
$archs = array();

foreach($ist as $i) {
  if ($i["pkgname"] != "")
    $pkgs[$i["pkgname"]][$i["arch"]]["ist"] = $i;
}

foreach($soll as $i) {
  if ($i["pkgname"] != "")
    $pkgs[$i["pkgname"]][$i["arch"]]["soll"] = $i;
}

$archs = array("any", "armv6h", "armv7h", "aarch64", "i486", "i686", "pentium4", "x86_64");

function evaluate_package($pkg) {
  if (!array_key_exists("ist", $pkg)) {
    $result["up-to-date"] = false;
    $result["version"] = $pkg["soll"]["pkgver"] . "-" . $pkg["soll"]["pkgrel"];
    $result["pkgname"] = $pkg["soll"]["pkgname"];
  } else if (!array_key_exists("soll", $pkg)) {
    $result["up-to-date"] = false;
    $result["version"] = $pkg["ist"]["pkgver"] . "-" . $pkg["ist"]["pkgrel"];
    $result["pkgname"] = $pkg["ist"]["pkgname"];
  } else {
    $result["up-to-date"] = ($pkg["ist"]["filename"] == $pkg["soll"]["filename"]);
    $result["version"] = $pkg["ist"]["pkgver"] . "-" . $pkg["ist"]["pkgrel"];
    $result["pkgname"] = $pkg["ist"]["pkgname"];
  }
  return $result;
}

function evaluate_apackage($apkg) {
  return array_map('evaluate_package', $apkg);
}

$pkgs = array_map('evaluate_apackage', $pkgs);

function any_outdated($pkgs) {
  foreach ($pkgs as $pkg)
    if (!$pkg["up-to-date"])
      return true;
  return false;
}

function pkg_compare($p1, $p2) {
  $p1o = (any_outdated($p1) ? 1 : -1);
  $p2o = (any_outdated($p2) ? 1 : -1);
  if ($p1o != $p2o)
    return $p2o;
  $p1n = $p1[array_key_first($p1)]["pkgname"];
  $p2n = $p2[array_key_first($p2)]["pkgname"];
  return strcmp($p1n, $p2n);
}

uasort($pkgs, 'pkg_compare');

?>
<!DOCTYPE html>
<html><body><table>
<tr><th>pkgname</th><?php

foreach ($archs as $arch)
  print "<th>" . $arch . "</th>";
print "</tr>\n";

foreach ($pkgs as $pkgname => $pkg) {
  print "<tr><td>" . $pkgname . "</td>";
  foreach ($archs as $arch) {
    if (!array_key_exists($arch, $pkg)) {
      print "<td>-</td>";
    } else {
      if ($pkg[$arch]["up-to-date"])
        $farbe = "#008000";
      else
        $farbe = "#c00000";
      print "<td><font color=\"" . $farbe . "\">";
      print $pkg[$arch]["version"];
      print "</font></td>";
    }
  }
  print "</tr>\n";
}

?>
</table></body></html>