<?php


class FormateurJson {
	
	
	public function __construct() {}
	
	
	public function formaterStations($stations) {
		$objetJSON = new StdClass();
		$objetJSON->type = "FeatureCollection";
		$objetJSON->stats = new StdClass();
		$objetJSON->stats->source = array();
		$objetJSON->stats->formeDonnees = '';
		if (count($stations) > 0) {
			$objetJSON->stats->formeDonnees = ($stations[0]['type_site'] == 'MAILLE') ? 'maille' : 'point';
		}
		$objetJSON->stats->stations = 0;
		$objetJSON->stats->observations = 0;
		
		$objetJSON->features = array();
		foreach ($stations as $station) {
			$stationJSON = null;
			if ($station['type_site'] == 'MAILLE') {
				$stationJSON = $this->formaterMaille($station);
				$objetJSON->stats->stations += array_sum($station['stations']);
				$objetJSON->stats->observations += array_sum($station['observations']);
			} else {
				$stationJSON = $this->formaterPoint($station);
				$objetJSON->stats->stations ++;
				$objetJSON->stats->observations += $station['observations'];
			}
			$objetJSON->features[] = $stationJSON;
			$this->ajouterSourcesAuxStats($station, $objetJSON->stats);
		}
		return $objetJSON;
	}
	
	private function ajouterSourcesAuxStats($station, & $stats) {
		if ($station['type_site'] == 'MAILLE') {
			foreach ($station['stations'] as $source => $nombreStations) {
				if (!in_array($source, $stats->source)) {
					$stats->source[] = $source;
				}
			}
		} else {
			if (!in_array($station['source'], $stats->source)) {
				$stats->source[] = $station['source'];
			}
		}
	}
	
	private function formaterPoint(& $station) {
		$json = new StdClass();
		$json->type = "Feature";
		$json->geometry = new StdClass();
		$json->properties = new StdClass();
		$json->geometry->type = "Point";
		$json->properties->source = $station['source'];
		$json->properties->typeSite = $station['type_site'];
		$json->geometry->coordinates = array($station['latitude'], $station['longitude']);
		$codeInsee = isset($station['code_insee']) ? $station['code_insee'] : substr($station['ce_zone_geo'],-5);
		$codeDepartement = $this->extraireCodeDepartement($codeInsee);
		$nom = '';
		if ($station['source'] != 'floradata') {
			$json->properties->nom = trim($station['nom'])." ({$codeDepartement})";
		} else {
			$station['station'] = (is_null($station['station']) || strlen(trim($station['station'])) == 0)
				? $station['zone_geo'] : $station['station'];
			$nom = $station['type_site'] == 'COMMUNE' ? $station['zone_geo'] : $station['station'];
			$json->properties->nom = trim($nom)." ({$codeDepartement})";
		}
		return $json;
	}
	
	private function construireNomStation(& $station) {
	}
	
	private function extraireCodeDepartement($codeInsee) {
		$codeDepartement = substr($codeInsee, 0 ,2);
		if (intval($codeDepartement) > 95) {
			$codeDepartement = substr($codeInsee, 0 ,3);
		}
		return $codeDepartement;
	}
	
	
	private function formaterMaille($maille) {
		$json = new StdClass();
		$json->type = "Feature";
		$json->geometry = new StdClass();
		$json->geometry->type = "Polygon";
		$json->geometry->coordinates = array(
			array(floatval($maille['sud']),  floatval($maille['ouest'])),
			array(floatval($maille['sud']),  floatval($maille['est'])),
			array(floatval($maille['nord']), floatval($maille['est'])),
			array(floatval($maille['nord']), floatval($maille['ouest'])),
			array(floatval($maille['sud']),  floatval($maille['ouest']))
		);
		$json->properties = new StdClass();
		$json->properties->source = array();
		foreach ($maille['stations'] as $source => $nombreStations) {
			$json->properties->source[] = $source;
		}
		$json->properties->typeSite = 'MAILLE';
		$json->properties->stations = $maille['stations'];
		$json->properties->observations = $maille['observations'];
		return $json;
	}
	
	
	public function formaterObservations($observations) {
		//print_r($observations); exit;
		$objetJSON = new StdClass();
		$objetJSON->site = trim($observations[0]['nom_station']);
		$objetJSON->total = count($observations);
		
		$objetJSON->observations = array();
		foreach ($observations as $observation) {
			$this->concatenerLieuObservation($observation);
			$observationJson = new stdClass();
			foreach ($observation as $colonne => $valeur) {
				if ($colonne == 'nom_referentiel') {
					$observationJson->urlEflore = $this->genererUrlFicheEflore($observation);
				} else {
					$observationJson->$colonne = is_string($valeur) ? trim($valeur) : $valeur;
				}
			}
			$this->formaterDateObservation($observationJson);
			$objetJSON->observations[] = $observationJson;
		}
		return $objetJSON;
	}
	
	private function formaterDateObservation(& $observation) {
		if (isset($observation->date) && strlen($observation->date) > 4) {
			$dateFormatee = preg_replace('/(\d{4})-(\d{2})-(\d{2})/', '$3/$2/$1', $observation->date);
			$observation->date = $dateFormatee;
		}
	}
	
	private function genererUrlFicheEflore(& $observation) {
		$url = null;
		if (strstr($observation['nom_referentiel'], 'bdtfx') !== false) {
			$url = 'http://www.tela-botanica.org/bdtfx-nn-'.$observation['nn'];
		}
		return $url;
	}
	
	private function concatenerLieuObservation(& $observation) {
		$lieux = array();
		if (isset($observation['lieudit']) && !is_null($observation['lieudit'])) {
			$lieux[] = $observation['lieudit'];
		}
		if (isset($observation['milieu']) && !is_null($observation['milieu'])) {
			$lieux[] = $observation['milieu'];
		}
		unset($observation['lieudit']);
		unset($observation['milieu']);
		$observation['lieu'] = implode(', ', $lieux);
	}
	
}

?>