GitHubPayloadAnalyzer.php
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	<?php

	namespace Nasqueron\Notifications\Analyzers;


	use Config;

	class GitHubPayloadAnalyzer {
	///
	/// Private members
	///

	/**
	* The project name, used to load specific configuration and offer defaults
	* @var string
	*/
	private $project;

	/**
	* The GitHub event triggering this request
	* @var string
	*/
	private $event;

	/**
	* The request content, as a structured data
	* @var stdClass
	*/
	private $payload;


	/**
	* The configuration for the payload analyzer
	* @var GitHubPayloadAnalyzerConfiguration;
	*/
	private $configuration;

	///
	/// Constructor
	///

	/**
	* Creates a new GitHubPayloadAnalyzer instance.
	*
	* @param string $project
	* @param string $event
	* @param stdClass $payload
	*/
	public function __construct($project, $event, $payload) {
	$this->project = $project;
	$this->event = $event;
	$this->payload = $payload;

	$this->loadConfiguration($project);
	}

	///
	/// Configuration
	///

	const CONFIG_DEFAULT_FILE = 'default.json';

	public function getConfigurationFileName () {
	$dir = Config::get('services.github.analyzer.configDir');
	$filename = $dir . '/' . $this->project . '.json';

	if (!file_exists($filename)) {
	return $dir . '/' . static::CONFIG_DEFAULT_FILE;
	}

	return $filename;
	}

	public function loadConfiguration () {
	$fileName = $this->getConfigurationFileName();
	$mapper = new \JsonMapper();
	$this->configuration = $mapper->map(
	json_decode(file_get_contents($fileName)),
	new GitHubPayloadAnalyzerConfiguration()
	);
	}

	///
	/// Properties
	///

	public function getRepository () {
	if ($this->isAdministrativeEvent()) {
	return '';
	}
	return $this->payload->repository->name;
	}

	///
	/// Qualification of the payload
	///

	public function isAdministrativeEvent () {
	$administrativeEvents = [
	'membership', // Member added to team
	'ping', // Special ping ponf event, fired on new hook
	'repository', // Repository created
	];

	return in_array($this->event, $administrativeEvents);
	}

	/**
	* Gets the group for a specific payload
	*
	* @return string the group, central part of the routing key
	*/
	public function getGroup () {
	// Some events are organization-level only and can't be mapped to an
	// existing repository.
	if ($this->isAdministrativeEvent()) {
	return $this->configuration->administrativeGroup;
	}

	// If the payload is about some repository matching a table of
	// symbols, we need to sort it to the right group.
	$repository = $this->getRepository();
	foreach ($this->configuration->repositoryMapping as $mapping) {
	if ($mapping->doesRepositoryBelong($repository)) {
	return $mapping->group;
	}
	}

	// By default, fallback group is the project name or a specified value.
	if (empty($this->configuration->defaultGroup)) {
	return $this->project;
	}
	return $this->configuration->defaultGroup;
	}
	}

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