<?php
// declare(encoding='UTF-8');
/**
 * Contient les requêtes effecturant la migration des mots-clés.
 *
 * @category   CEL
 * @package    Scripts
 * @subpackage Migration : Sauvages
 * @author     Mathias CHOUET <mathias@tela-botanica.org>
 * @author     Jean-Pascal MILCENT <jpm@tela-botanica.org>
 * @author     Aurelien 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>
 * @copyright  1999-2014 Tela Botanica <accueil@tela-botanica.org>
 */
class Dao extends Bdd {

	private $mode;
	private $table_liaison;
	private $table_mots_cles;

	public function __construct($mode) {
		parent::__construct();
		$this->mode = $mode;

		if ($mode == 'obs') {
			$this->table_liaison = 'cel_mots_cles_obs_liaison';
			$this->table_mots_cles = 'cel_arbre_mots_cles_obs';
		} else {
			$this->table_liaison = 'cel_mots_cles_images_liaison';
			$this->table_mots_cles = 'cel_arbre_mots_cles_images';
		}
	}

	public function viderTables() {
		$requete = "TRUNCATE ".$this->table_mots_cles." ";
		$vidage = $this->requeter($requete.' -- '.__FILE__.':'.__LINE__);

		$requete = "TRUNCATE ".$this->table_liaison." ";
		$vidage = $this->requeter($requete.' -- '.__FILE__.':'.__LINE__);

		return $vidage;
	}

	public function obtenirMotsClesOriginaux() {
		if($this->mode == 'obs') {
			$requete = "SELECT id_mot_cle_obs as id_mot_cle, ce_mot_cle_obs_parent as parent, id_utilisateur, mot_cle ".
				"FROM cel_mots_cles_obs WHERE niveau != 0 AND id_utilisateur != '' ORDER BY id_utilisateur, niveau";
		} else {
			$requete = "SELECT id_mot_cle_image as id_mot_cle, ce_mot_cle_image_parent as parent, id_utilisateur, mot_cle ".
				"FROM cel_mots_cles_images WHERE niveau != 0 AND id_utilisateur != '' ORDER BY id_utilisateur, niveau";
		}

		$mots_cles = $this->recupererTous($requete);
		return $mots_cles;
	}

	public function obtenirLiaisonsMotsClesOriginaux() {
		if ($this->mode == 'obs') {
			$requete = "SELECT comc.id_observation as id_element_lie, comc.id_mot_cle_obs as id_mot_cle, id_utilisateur as id_utilisateur ".
				"FROM cel_obs_mots_cles comc ".
				"INNER JOIN cel_obs o ON o.id_observation = comc.id_observation ";
		} else {
			$requete = "SELECT comc.id_image as id_element_lie, comc.id_mot_cle_image as id_mot_cle, o.ce_utilisateur as id_utilisateur ".
				"FROM cel_images_mots_cles comc ".
				"INNER JOIN cel_images o ON o.id_image = comc.id_image ";
		}
		$liaisons = $this->recupererTous($requete);
		return $liaisons;
	}

	public function insererMotsCles($mots_cles) {
		$requete = "INSERT INTO ".$this->table_mots_cles." (chemin, id_utilisateur, mot_cle) VALUES ";

		foreach ($mots_cles as $mot_cle) {
			$requete .= '('.
				$this->proteger($mot_cle['chemin']).', '.
				$this->proteger($mot_cle['id_utilisateur']).', '.
				$this->proteger($mot_cle['mot_cle']).' '.
			'), ';
		}

		$requete = rtrim($requete, ', ');
		return $this->requeter($requete);
	}

	public function obtenirInfosNouveauxMotsCles() {
		$requete = "SELECT id_mot_cle, id_utilisateur, chemin FROM ".$this->table_mots_cles;
		return $this->recupererTous($requete);
	}

	public function insererLiaisonsMotsCles($mots_cles, $liaisons, $correspondances) {
		$requete = "INSERT INTO ".$this->table_liaison." (id_element_lie, id_mot_cle) VALUES ";
		$lier = false;
		$mot_cles_inexistants = 0;

		foreach ($liaisons as &$liaison_mot_cle) {
			$cle = $liaison_mot_cle['id_mot_cle'].'-'.$liaison_mot_cle['id_utilisateur'];
			if (isset($mots_cles[$cle])) {
				$cle_id_mot_cle_migre = $mots_cles[$cle]['chemin'].'-'.$liaison_mot_cle['id_utilisateur'];
				if(isset($correspondances[$cle_id_mot_cle_migre])) {
					$id_mot_cle_migre = $correspondances[$cle_id_mot_cle_migre]['id_mot_cle'];
					$requete .= "(".
						$this->proteger($liaison_mot_cle['id_element_lie']).", ".
						$this->proteger($id_mot_cle_migre)." ".
									"), ";
					$lier = true;
				} else {
					$mot_cles_inexistants++;
				}
			}
		}

		if ($lier) {
			$requete = rtrim($requete, ', ');
			$this->requeter($requete);
		}
		if ($mot_cles_inexistants != 0) {
			echo $mot_cles_inexistants."\n";
		}
	}
}