Pageon\SlackWebhookMonolog\Slack\Channel

Complexity

Total Complexity

11

Size/Duplication

Total Lines	94
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes	4
Bugs	0	Features	2

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
B	setName()	0	37	6
A	getChannel()	0	4	1
A	__toString()	0	4	1
A	isValidName()	0	12	2

<?php

namespace Pageon\SlackWebhookMonolog\Slack;

use Pageon\SlackWebhookMonolog\Slack\Exceptions\InvalidChannelException;
use Pageon\SlackWebhookMonolog\Slack\Interfaces\ChannelInterface;

/**
 * @author Jelmer Prins <jelmer@pageon.be>
 *
 * @since 0.1.0
 */
class Channel implements ChannelInterface
{
    private $name;

    /**
     * Channel constructor.
     *
     * @param string $name
     */
    public function __construct($name)
    {
        $this->setName($name);
    }

    /**
     * @param string $name
     *
     * @return self
     */
    private function setName($name)
    {
        $name = trim($name);

        if (strlen($name) === 0) {
            throw new InvalidChannelException(
                'The name should start with "#" for a channel or "@" for an account.
                    The name that was provided did not start with either of those.',
                400
            );
        }

        // names should be lowercase so we just enforce this without further validation
        $name = mb_strtolower($name, 'UTF8');

        switch ($name[0]) {
            case '#':
                if ($this->isValidName($name, '_^#[\w-]{1,21}$_')) {
                    $this->name = $name;
                }

                return;
            case '@':
                // check if the username matches the requirements from slack
                if ($this->isValidName($name, '_^@[\w-.]{1,21}$_')) {
                    $this->name = $name;
                }

                return;
            default:
                throw new InvalidChannelException(
                    'The name should start with "#" for a channel or "@" for an account.
                    The name that was provided did not start with either of those.',
                    400
                );
        }
    }

    /**
     * {@inheritdoc}
     */
    public function getChannel()
    {
        return $this->name;
    }

    /**
     * {@inheritdoc}
     */
    public function __toString()
    {
        return $this->getChannel();
    }

    /**
     * Check if the name is valid against a regular expression.
     *
     * @param string $name
     * @param string $validationRegex
     *
     * @return bool
     */
    private function isValidName($name, $validationRegex)
    {
        if (!preg_match($validationRegex, $name)) {
            throw new InvalidChannelException(
                'Channel names must be all lowercase.
                 They cannot be longer than 21 characters and can only contain letters, numbers, hyphens, and underscores.',
                400
            );
        }

        return true;
    }
}