bitbucket pull-request POST hook to Slack chat

gistfile1.php

<?
function hash_value($obj, $keys){
  if(empty($keys)) return $obj;
  $key = array_shift($keys);
  if(isset($obj[$key])){
    return hash_value($obj[$key], $keys);
  }else{
    return '';
  }
}

function logg($file, $str){
  file_put_contents($file, "\n-----------------------------\n", FILE_APPEND);
  file_put_contents($file, $str, FILE_APPEND);
}

# https://api.bitbucket.org/2.0/repositories/hoge/fuga/pullrequests/1156/comments/1945
#  to
# https://bitbucket.org/hoge/fuga/pull-request/1156/diff#comment-1945
#
# https://api.bitbucket.org/2.0/repositories/hoge/fuga/commit/8xxx8819e5f7
#  to
# https://bitbucket.org/kobayashi_at_hoge/fuga/commits/8xxx8819e5f7
function api_link_to_html_link($src){
  $src = str_replace(
    array('api.', '/1.0/repositories', '/2.0/repositories', 'pullrequests', '/comments/',     '/commit/'),
    array('',     '',                  '',                  'pull-request', '/diff#comment-', '/commits/'),
    $src);

  return $src;
}

function create_msg($desc, $obj){
  $user = hash_value($obj, array('user', 'display_name'));
  if(!$user){
    $user = hash_value($obj, array('author', 'display_name'));
  }
  $link            = hash_value($obj, array('links', 'html', 'href'));
  $link            = str_replace('api.bitbucket', 'bitbucket', $link);
  if(!$link){
    $link          = api_link_to_html_link(hash_value($obj, array('links', 'self', 'href')));
  }
  $title           = hash_value($obj, array('title'));
  $repository_name = hash_value($obj, array("destination",'repository','full_name'));
  $branch_name     = hash_value($obj, array("destination",'branch','name'));
  $comment         = hash_value($obj, array('content', 'raw'));

  if($repository_name) $repository_name = "リポジトリ:$repository_name";
  if($branch_name) $branch_name = "ブランチ:$branch_name";
  if($user) $user .= "によって";
  if($comment) $comment = "\n「{$comment}」\n";
  return "$user $desc$comment\n$repository_name $branch_name\n$title $link";
}

$json_string = file_get_contents('php://input');
$obj = json_decode($json_string, true);
$file = "/tmp/receive_hook.txt";
file_put_contents($file, $json_string);

foreach(array(
  'pullrequest_approve'         => '承認されました',
  'pullrequest_comment_created' => 'コメントが追加されました',
  'pullrequest_comment_deleted' => 'コメントが削除されました',
  'pullrequest_comment_updated' => 'コメントが更新されました',
  'pullrequest_created'         => 'プルリクエストができました',
  'pullrequest_merged'          => 'プルリクエストがマージされました',
  'pullrequest_declined'        => 'プルリクエストが辞退されました',
  'pullrequest_unapprove'       => '承認が取り消されました',
  'pullrequest_updated'         => 'プルリクエストが更新されました',
) as $key => $desc){
  if(isset($obj[$key])){
    $text = create_msg($desc, $obj[$key]);
    break;
  }
}
if(!isset($text)) $text = "Hello";
logg($file, $text);

$params = http_build_query(array(
  'token'    => trim(file_get_contents('api_key')),
  'channel'  => trim(file_get_contents('channel')),
  'text'     => $text,
  'username' => 'Bitbucket-Slack-Bot',
));
$url = "https://slack.com/api/chat.postMessage?$params";
logg($file, $url);

$result = `wget -O responce.txt '$url' 2>&1`;
logg($file, $result);

create fook at bitbucket

directory tree

$ tree
.
├── api_key   # slack api key
├── channel   # slack post channel
└── index.php # bitbucket hook