<?php
/**
* Description :
* Classe principale de chargement des services d'eFlore.
*
* Encodage en entrée : utf8
* Encodage en sortie : utf8
* @package eflore-projets
* @author Jennifer DHÉ <jennifer.dhe@tela-botanica.org>
* @author Delphine CAUQUIL <delphine@tela-botanica.org>
* @author Jean-Pascal MILCENT <jpm@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 Protocoles extends RestService {

	
	/*
	* url possibles :
	* http://localhost/del/services/0.1/observations/ => toutes les observations (infos obs, infos images, infos propositions, infos nb commentaires)
	* http://localhost/del/services/0.1/observations/#id => une observation donnée et ses images, SANS LES propositions & nombre de commentaire
	* */
	
	private $parametres = array();
	private $ressources = array();
	private $methode = null;
	private $projetNom = array();
	private $serviceNom = array();
	private $cheminCourant = 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;
	}

	public function consulter($ressources, $parametres) {
		$this->methode = 'consulter';
		$resultat = '';
		$reponseHttp = new ReponseHttp();
		try {
			$this->initialiserRessourcesEtParametres($ressources, $parametres);
			$this->conteneur = new Conteneur($this->parametres);
			$resultat = $this->traiterRessources();
			$reponseHttp->setResultatService($resultat);
		} catch (Exception $e) {
			$reponseHttp->ajouterErreur($e);
		}
		$reponseHttp->emettreLesEntetes();
		$corps = $reponseHttp->getCorps();
		return $corps;
	}
	
	public function ajouter($ressources, $requeteDonnees) {
		$this->methode = 'ajouter';
		$resultat = '';
		try {
			$this->initialiserRessourcesEtParametres($ressources, $requeteDonnees);
			$this->conteneur = new Conteneur($this->parametres);
			$resultat = $this->traiterRessources();
		} catch (Exception $e) {
			$reponseHttp->ajouterErreur($e);
		}
	}

	private function initialiserRessourcesEtParametres($ressources, $parametres) {
		$this->ressources = $ressources;
		$this->parametres = $parametres;
	}

	private function traiterRessources() {
		$retour = '';
		$this->initialiserProjet();
		if ($this->avoirRessourceService()) {
			$retour = $this->initialiserService();
		}
		return $retour;
	}
	
	private function avoirRessourceIdentifiant($num) {
		$presenceId = false;
			if (is_numeric($this->ressources[$num])) {
				$presenceId = true;
			} else {
				$message = "Le service demandé '$service' nécessite d'avoir un identifiant d'image valide";
				$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
				throw new Exception($message, $code);
			}
		return $presenceId;
	}
	/*------------------------------------------------------------------------------------------------------------------
										CONFIGURATION DU PROJET
	------------------------------------------------------------------------------------------------------------------*/
	private function initialiserProjet() {
		$this->chargerNomDuProjet();
		$this->chargerConfigProjet();

	}

	private function chargerNomDuProjet() {
		$this->projetNom = 'protocoles';
	}

	private function chargerConfigProjet() {
		$projet = $this->projetNom;
		$chemin = Config::get('chemin_configurations')."config_$projet.ini";
		Config::charger($chemin);
	}

	/*------------------------------------------------------------------------------------------------------------------
								CONFIGURATION DU SERVICE
	------------------------------------------------------------------------------------------------------------------*/
	private function avoirRessourceService() {
		/*
		* url possibles :
		* http://localhost/del/services/0.1/observations/ => toutes les observations (infos obs, infos images, infos propositions, infos nb commentaires)
		* http://localhost/del/services/0.1/observations/#id => une observation donnée et ses images, SANS LES propositions & nombre de commentaire
		* */
		$presenceRessourceService = false;
		if (isset($this->ressources[0])) {
			if ($this->avoirRessourceIdentifiant(0)) {
				if (sizeof($this->ressources) == 1) {
					$presenceRessourceService = true;
					$this->serviceNom = 'observation';
				} else {
					if (isset($this->ressources[1])) {
						$presenceRessourceService = $this->avoirRessourceSousService();
					}
				} 
			} 
		} else {
			$presenceRessourceService = true;
			$this->serviceNom = 'liste-protocoles';
		}
		return $presenceRessourceService;
	}
	
	private function avoirRessourceSousService() {
		$presenceRessourceService = false;
		$servicesDispo = Outils::recupererTableauConfig('servicesDispo');
		if ($this->avoirRessourceIdentifiant(1)) {
			$service = $this->ressources[2];
			if (in_array($service, $servicesDispo)) {
				$presenceRessourceService = true;
				$this->serviceNom = 'vote-observation';
			} else {
				$message = "Le service demandé '$service' n'est pas disponible pour le projet {$this->projetNom} !\n".
							"Les services disponibles sont : ".implode(', ', $servicesDispo);
				$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
				throw new Exception($message, $code);
			}
		}
		return $presenceRessourceService;
	}

	private function initialiserService() {
		//$this->chargerNomDuService();
		
		$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, $this->parametres);
				} elseif ($this->methode == 'ajouter') {
					$retour = $service->ajouter($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 obtenirNomClasseService($mot) {
		$classeNom = str_replace(' ', '', ucwords(strtolower(str_replace('-', ' ', $mot))));
		return $classeNom;
	}
}
?>