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<?php namespace nyx\notify\transports; |
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// Internal dependencies |
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use nyx\notify\interfaces; |
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/** |
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* Slack Transport |
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* |
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* @package Nyx\Notify |
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* @version 0.1.0 |
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* @author Michal Chojnacki <[email protected]> |
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* @copyright 2012-2017 Nyx Dev Team |
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* @link https://github.com/unyx/nyx |
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*/ |
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class Slack implements interfaces\Transport |
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{ |
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/** |
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* The types Message icons can be of. |
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*/ |
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const ICON_TYPE_URL = 'icon_url'; |
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const ICON_TYPE_EMOJI = 'icon_emoji'; |
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/** |
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* @var \GuzzleHttp\ClientInterface The underlying HTTP Client instance. |
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*/ |
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protected $client; |
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/** |
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* @var string The oAuth token to authorize API requests with (when not using webhook endpoints). |
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*/ |
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protected $token; |
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/** |
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* @var string The (Webhook) endpoint to send messages to (when not using the Web API). |
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*/ |
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protected $endpoint; |
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/** |
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* @var string The default username to send messages as. |
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*/ |
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protected $username; |
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/** |
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* @var string The default icon to send messages with. |
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*/ |
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protected $icon; |
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/** |
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* @var string The default parse mode of Messages. One of the slack\Message::PARSE_* class constants. |
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*/ |
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protected $parse; |
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/** |
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* @var bool Whether names (like @someone) should be linked or left raw by Slack. |
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*/ |
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protected $linkNames; |
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/** |
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* @var bool Whether Slack should unfurl text-based URLs. |
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*/ |
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protected $unfurlLinks; |
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/** |
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* @var bool Whether Slack should unfurl media URLs. |
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*/ |
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protected $unfurlMedia; |
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/** |
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* @var bool Whether the text of the messages sent should be parsed as Slack's markdown flavour or treated as |
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* raw text. |
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*/ |
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protected $allowMarkdown; |
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/** |
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* @var array The attachment fields that should be parsed by Slack's markdown flavour. |
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*/ |
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protected $markdownInAttachments; |
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/** |
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* Parses an icon "definition" and determines whether it should be treated as an URL or a Slack-recognized |
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* emoji. |
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* |
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* @param string $icon The icon's "definition". |
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* @return string One of the ICON_TYPE_* class constants. |
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*/ |
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public static function determineIconType(string $icon) : string |
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{ |
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// Filter_var() will do the trick since we're not in a security-sensitive context. |
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if (filter_var($icon, FILTER_VALIDATE_URL)) { |
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return self::ICON_TYPE_URL; |
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} |
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return self::ICON_TYPE_EMOJI; |
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} |
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/** |
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* Constructs a new Slack Transport instance. |
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* |
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* @param array $config The Transport's configuration. |
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* @param \GuzzleHttp\ClientInterface $client A Guzzle HTTP Client instance. |
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* @todo Proper parsing of config options and error-recovery. |
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*/ |
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public function __construct(array $config, \GuzzleHttp\ClientInterface $client) |
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{ |
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$this->token = $config['token'] ?? null; |
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$this->endpoint = $config['endpoint'] ?? null; |
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$this->username = $config['username'] ?? null; |
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$this->icon = $config['icon'] ?? null; |
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$this->parse = $config['parse'] ?? slack\Message::PARSE_DEFAULT; |
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$this->linkNames = $config['link_names'] ?? true; |
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$this->unfurlLinks = $config['unfurl_links'] ?? false; |
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$this->unfurlMedia = $config['unfurl_media'] ?? true; |
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$this->allowMarkdown = $config['allow_markdown'] ?? true; |
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$this->markdownInAttachments = $config['markdown_in_attachments'] ?? []; |
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$this->client = $client; |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @throws \InvalidArgumentException When the Notification casts down to a Message without text nor attachments. |
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*/ |
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public function send(interfaces\Notifiable $notifiable, interfaces\Notification $notification) |
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{ |
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/* @var slack\interfaces\Slackable $notification */ |
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if (!$this->supports($notification)) { |
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throw new \InvalidArgumentException('The given Notification is not supported (did you forget to implement the Slackable Interface?).'); |
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} |
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if (false === $notifiable->routeNotification('slack', $message = $notification->toSlack($notifiable))) { |
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return; |
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} |
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// Note: The dual 'to()' cast is intended - toSlack() above will let the Notification build the appropriate |
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// Message while the latter toArray() call flattens the whole structure down into an array that we can more |
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// easily digest and pass on to Slack itself. |
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$message = $message->toArray(); |
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// We need text or an attachment for the message to actually be displayed in Slack. |
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if (empty($message['text']) && empty($message['attachments'])) { |
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throw new \RuntimeException('A message to Slack must contain at least either text or an attachment, got neither.'); |
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} |
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// Apply our defaults where the Message doesn't override them. |
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$message['token'] = $message['token'] ?? $this->token; |
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$message['endpoint'] = $message['endpoint'] ?? $this->endpoint; |
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$message['username'] = $message['username'] ?? $this->username; |
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$message['parse'] = $message['parse'] ?? $this->parse; |
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$message['link_names'] = $this->linkNames ? 1 : 0; |
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$message['unfurl_links'] = $this->unfurlLinks; |
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$message['unfurl_media'] = $this->unfurlMedia; |
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$message['mrkdwn'] = $this->allowMarkdown; |
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$message['mrkdwn_in'] = $this->markdownInAttachments; |
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// We're applying the icon separately since we need to know what key it's going to be sent as. |
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$icon = $message['icon'] ?? $this->icon; |
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if ($icon) { |
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$message[static::determineIconType($icon)] = $icon; |
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} |
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if (isset($message['response_url'])) { |
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$this->sendResponse($message); |
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} elseif ($message['token']) { |
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$this->sendApiMessage($message); |
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} elseif ($message['endpoint']) { |
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$this->sendWebhookMessage($message); |
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} else { |
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throw new \InvalidArgumentException('No oAuth token nor webhook endpoint given, could not send the Notification.'); |
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} |
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} |
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/** |
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* Performs the actual sending of a Message to a Slack Webhook endpoint. |
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* |
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* @param array $message The Message's data (toArray()'ed). |
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*/ |
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protected function sendWebhookMessage(array $message) |
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{ |
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$this->client->request('POST', $message['endpoint'], [ |
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'json' => $message, |
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]); |
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} |
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/** |
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* Performs the actual sending of a Message to Slack's Web API. |
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* |
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* @param array $message The Message's data (toArray()'ed). |
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*/ |
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protected function sendApiMessage(array $message) |
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{ |
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// Slack rejects PHP-style arrays so we need to encode them as JSON if they're present. |
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if (!empty($message['mrkdwn_in'])) { |
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$message['mrkdwn_in'] = json_encode($message['mrkdwn_in']); |
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} |
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if (!empty($message['attachments'])) { |
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$message['attachments'] = json_encode($message['attachments']); |
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} |
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$this->client->request('POST', 'https://slack.com/api/chat.postMessage', [ |
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'form_params' => $message, |
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]); |
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} |
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/** |
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* Performs the actual sending of a Response to its Response URL provided by Slack. |
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* |
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* @param array $message The Message's data (toArray()'ed). |
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*/ |
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protected function sendResponse(array $message) |
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{ |
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$this->client->request('POST', $message['response_url'], [ |
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'json' => $message, |
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]); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function supports(interfaces\Notification $notification) : bool |
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{ |
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return ($notification instanceof slack\interfaces\Slackable); |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: