<?php

class CustomGithubDownloadLinks {

  static function getMirrorURI($repo) {
    $uris = $repo->getURIs();

    foreach ($uris as $uri) {
      if ($uri->getIsDisabled()) {
        continue;
      }
      if ($uri->getEffectiveIoType() == PhabricatorRepositoryURI::IO_MIRROR &&
          strpos($uri->getDisplayURI(), 'github') !== false) {
        return $uri;
      }
    }
    return false;
  }

  static function AddActionLinksToTop($repository, $identifier) {
    global $github_download_zip_button, $github_download_tar_button;

    $uri = self::getMirrorURI($repository);
    if (!$uri) {
      return;
    }
    $uri = $uri->getURI();
    
    $github_download_zip_button = id(new PHUIButtonView())
      ->setTag('a')
      ->setText(pht('Download zip (from Github)'))
      ->setColor(PHUIButtonView::GREEN)
      ->setIcon('fa-download')
      ->setHref($uri.'/archive/'.$identifier.'.zip');

    $github_download_tar_button = id(new PHUIButtonView())
      ->setTag('a')
      ->setText(pht('Download gz (from Github)'))
      ->setColor(PHUIButtonView::GREEN)
      ->setIcon('fa-download')
      ->setHref($uri.'/archive/'.$identifier.'.tar.gz');
  }

  static function addActionsToTop($drequest) {
    $repository = $drequest->getRepository();

    try {
      if ($drequest->getSymbolicType() == 'tag') {
        $download = $drequest->getSymbolicCommit();
      } elseif ($drequest->getSymbolicType() == 'commit') {
        $download = $drequest->getStableCommit();
      } else {
        $download = $drequest->getBranch();
      }
    } catch(Exception $e) {
      return '';
    }

    return self::AddActionLinksToTop($repository, $download);
  }
}