TestMonitor Slack Client

This package provides a very basic, convenient, and unified wrapper for sending posts to Slack. Out of the box, it comes with:

Slack V2 OAuth 2.0 protocol for authentication (inspired by the Slack Provider for OAuth 2.0 Client).
The Slack Block Kit for PHP, a library that provides an OOP interface in PHP for composing messages/modals.

Installation
Usage
Examples
Tests
Changelog
Contributing
Credits
License

Installation

To install the client you need to require the package using composer:

$ composer require testmonitor/slack-client

Use composer's autoload:

require __DIR__.'/../vendor/autoload.php';

You're all set up now!

Usage

This client only supports oAuth 2.0 authentication. You'll need a Slack application to proceed. If you haven't done so, please read up with the Slack authentication API docs on how to create an application.

When you already have an application available, make sure it's a new Slack app, as this package does not support Slack classic apps. To learn more about the differences between classic and new Slack apps, refer to the differences between old and new Slack apps.

When your Slack application is up and running, start with the oAuth authorization:

$oauth = [
    'clientId' => '12345',
    'clientSecret' => 'abcdef',
    'redirectUri' => 'https://redirect.myapp.com/',
];

$slack = new \TestMonitor\Slack\Client($oauth);

header('Location: ' . $slack->authorizationUrl('incoming-webhook', 'state'));
exit();

This will redirect the user to a page asking confirmation for your app getting access to Slack. Make sure your redirectUrl points back to your app. Slack will provide you with a temporary code that allows you to create an access code that can be used for authentication. Route the redirect URL to the following code:

$oauth = [
    'clientId' => '12345',
    'clientSecret' => 'abcdef',
    'redirectUri' => 'https://redirect.myapp.com/',
];

$slack = new \TestMonitor\Slack\Client($oauth);

$token = $slack->fetchToken($_REQUEST['code']);

When everything went ok, you should have an access token (available through AccessToken object). The AccessToken contains all the information you should need to post a message using a webhook:

var_dump ($token->getValues());

array() {
    ["ok"] => true
    ["app_id"] => "APPID"
    ["authed_user"] => array(1) {}
    ["scope"] => "incoming-webhook"
    ["token_type"] => "bot"
    ["bot_user_id"] => "USERID"
    ["team"] => array(2) {}
    ["enterprise"] => null
    ["is_enterprise_install"] => false
    ["incoming_webhook"] => array(4) {
      ["channel"] => "#testmonitor"
      ["channel_id"] => "CHANNELID"
      ["configuration_url"] => "https://domain.slack.com/services/B123456USA"
      ["url"] => "https://hooks.slack.com/services/T123456/B123456USA/tEsTm0n1t0r"
    }

Make sure to save incoming webhook URL in your database, you'll need this later to post messages.

In case your Slack app is not configured for token rotation, you're all done now!

When token rotation has been enabled, your access token will be valid for twelve hours. After that, you'll have to refresh the token to regain access:

$oauth = ['clientId' => '12345', 'clientSecret' => 'abcdef', 'redirectUri' => 'https://redirect.myapp.com/'];
$token = new \TestMonitor\Slack\Token('eyJ0...', '0/34ccc...', 1574600877); // the token you got last time

$slack = new \TestMonitor\Slack\Client($oauth, $token);

if ($token->expired()) {
    $newToken = $slack->refreshToken();
}

The new token will be valid again for the next twelve hours.

Examples

Post a simple message to Slack:

$message = Kit::newMessage()->text('Hello world!');

$slack->postMessage('https://webhook.url/', $message);

Block Kit allows you to create way more comprehensive messages. Here's another example:

$user = (object) ['name' => 'John Doe'];

$message = Kit::newMessage()
    ->tap(function (Message $message) {
        $message->newSection()
            ->mrkdwnText("*{$user->name}* created a new issue");
    })
    ->divider()
    ->tap(function (Message $message) {
        $message->newContext()
            ->mrkdwnText('Status: *Open*')
            ->mrkdwnText('Priority: *High*')
            ->mrkdwnText('Resolution: *Unresolved*');
    })

$slack->postMessage('https://webhook.url/', $message);

For more information on composing messages with Block Kit, head over to the Slack Block Kit for PHP documentation or refer to the official Slack Block Kit documentation.

Tests

The package contains integration tests. You can run them using PHPUnit.

$ vendor/bin/phpunit

Changelog

Refer to CHANGELOG for more information.

Contributing

Refer to CONTRIBUTING for contributing details.

Credits

Thijs Kok - Lead developer - ThijsKok
Stephan Grootveld - Developer - Stefanius
Frank Keulen - Developer - FrankIsGek
Muriel Nooder - Developer - ThaNoodle

License

The MIT License (MIT). Refer to the License for more information.

stefanius/slack-client