Subversion Repositories eFlore/Applications.del

<?php

/**

* Description :

* Classe principale de chargement des services de syndication

*

* Encodage en entrée : utf8

* Encodage en sortie : utf8

* @package del-service

* @author Aurélien PERONNET <aurelien@tela-botanica.org>

* @license GPL v3 <http://www.gnu.org/licenses/gpl.txt>

* @license CECILL v2 <http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt>

* @version 0.1

* @copyright 1999-2011 Tela Botanica (accueil@tela-botanica.org)

*/

class Syndication extends RestService {

	private $parametres = array();

	private $ressources = array();

	private $methode = null;

	private $projetNom = array();

	private $serviceNom = array();

	private $cheminCourant = null;

	private $squelette_dossier = null;

	private $formats_autorises = null;

	private $conteneur;

	/** Indique si oui (true) ou non (false), on veut utiliser les paramètres bruts. */

	protected $utilisationParametresBruts = true;

	public function __construct() {

		$this->cheminCourant = dirname(__FILE__).DS;

		$this->squelette_dossier = dirname(__FILE__).DS.'syndication'.DS.'squelettes'.DS;

	}

	public function consulter($ressources, $parametres) {

		$this->methode = 'consulter';

		$resultat = '';

		$reponseHttp = new ReponseHttp();

		try {

			$this->initialiserProjet();

			$this->initialiserRessourcesEtParametres($ressources, $parametres);

			$this->conteneur = new Conteneur($this->parametres);

			$this->verifierRessourcesEtParametres();

			$resultat = $this->traiterRessources();

			$reponseHttp->setResultatService($this->creerResultatService($resultat));

		} catch (Exception $e) {

			$reponseHttp->ajouterErreur($e);

		}

		$reponseHttp->emettreLesEntetes();

		$corps = $reponseHttp->getCorps();

		return $corps;

	}

	private function initialiserRessourcesEtParametres($ressources, $parametres) {

		$this->ressources = $ressources;

		$this->parametres = $parametres;

	}

	private function verifierRessourcesEtParametres() {

		$servicesDispos = Config::get('servicesDispo');

		if (!isset($this->ressources[0]) || !in_array($this->ressources[0], explode(',',$servicesDispos))) {

			$message = "Vous devez indiquer un nom de service valide, les services disponibles sont ".$servicesDispos;

			$code = RestServeur::HTTP_CODE_ERREUR;

			throw new Exception($message, $code);

		}

		$chaineFormatsAutorises = Config::get('formatsRss');

		$this->formats_autorises = explode(',', $chaineFormatsAutorises);

		if (!isset($this->ressources[1]) || !in_array($this->ressources[1], $this->formats_autorises)) {

			$message = "Vous devez indiquer un format de flux valide, les formats acceptés sont ".$chaineFormatsAutorises;

			$code = RestServeur::HTTP_CODE_ERREUR;

			throw new Exception($message, $code);

		} else {

			$this->format = $this->ressources[1];

		}

	}

	private function traiterRessources() {

		$retour = '';

		$retour = $this->initialiserService();

		return $retour;

	}

	private function creerResultatService($donnees) {

		$resultat = new ResultatService();

		$resultat->mime = $this->getTypeMime();

		$resultat->corps = SquelettePhp::analyser($this->squelette_dossier.$this->format.'.tpl.xml', $donnees);

		return $resultat;

	}

	/*------------------------------------------------------------------------------------------------------------------

										CONFIGURATION DU PROJET

	------------------------------------------------------------------------------------------------------------------*/

	private function initialiserProjet() {

		$this->projetNom = 'syndication';

		$this->chargerConfigProjet();

	}

	private function chargerConfigProjet() {

		$projet = $this->projetNom;

		$chemin = Config::get('chemin_configurations')."config_$projet.ini";

		Config::charger($chemin);

	}

	/*------------------------------------------------------------------------------------------------------------------

								CONFIGURATION DU SERVICE

	------------------------------------------------------------------------------------------------------------------*/

	private function initialiserService() {

		$this->chargerNomService();

		$classe = $this->obtenirNomClasseService($this->serviceNom);

		$chemins = array();

		$chemins[] = $this->cheminCourant.$this->projetNom.DS.$classe.'.php';

		$chemins[] = $this->cheminCourant.'commun'.DS.$classe.'.php';

		$retour = '';

		$service = null;

		foreach ($chemins as $chemin) {

			if (file_exists($chemin)) {

				$this->conteneur->chargerConfiguration('config_'.$this->projetNom.'.ini');

				require_once $chemin;

				$service = new $classe($this->conteneur);

				if ($this->methode == 'consulter') {

					$retour = $service->consulter($this->ressources, $this->parametres);

				}

			}

		}

		if (is_null($service)) {

			$message = "Le service demandé '{$this->serviceNom}' n'existe pas dans le projet {$this->projetNom} !";

			$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;

			throw new Exception($message, $code);

		}

		return $retour;

	}

	private function chargerNomService() {

		if (!isset($this->ressources[0])) {

			$message = "Vous devez indiquer un nom de service";

			$code = RestServeur::HTTP_CODE_ERREUR;

			throw new Exception($message, $code);

		} else {

			$this->serviceNom = $this->ressources[0];

		}

	}

	private function obtenirNomClasseService($mot) {

		$classeNom = 'Syndication'.ucwords($mot);

		return $classeNom;

	}

	private function getTypeMime() {

		$mime = '';

		switch ($this->format) {

			case 'atom' :

				$mime = 'application/atom+xml';

				break;

			case 'rss1' :

			case 'rss2' :

				$mime = 'application/rss+xml';

				break;

			case 'opml' :

				$mime = 'text/x-opml';

				break;

			default:

				$mime = 'text/html';

		}

		return $mime;

	}

}

?>