<?php

class ProjectKosztorysSchema {

  public static function getSchema() {
    static $_schema = null;
		if (null !== $_schema) return $_schema;
    /*
			22444 INNE Kosztorys - zasoby
				22445 INNE Kabel 2J do wdmuchiwania w mikrorurce 7/4 mm z wdmuchiwaniem
				22446 INNE Kabel 4J do wdmuchiwania w mikrorurce 7/4 mm z wdmuchiwaniem
				... Labels for order form
				22460 TABELA Światłowód (Alias do [20225] TABELA default_db/Rozdzielcza_Kabel_Swiatlowodowy_wsg84)
					22461 20299 KOMORKA ZASOB (Alias do [20299] KOMORKA OznKabla)
					22462 20292 KOMORKA JEDNOSTKA_METR ilość [m] (Alias do [20292] KOMORKA Dlugosc)
				... where to search for data
		*/
		{
			$pdo = DB::getPDO();
			$sth = $pdo->prepare("
				select z.ID, z.TYPE, z.DESC, z.ALIAS_ID
					, c.ID as c_ID, c.TYPE as c_TYPE, c.DESC as c_DESC, c.ALIAS_ID as c_ALIAS_ID
					, a.ID as a_ID, a.TYPE as a_TYPE, a.DESC as a_DESC, a.ALIAS_ID as a_ALIAS_ID
					, za.ID as za_ID, za.TYPE as za_TYPE, za.DESC as za_DESC, za.ALIAS_ID as za_ALIAS_ID
				from CRM_LISTA_ZASOBOW z
					left join CRM_LISTA_ZASOBOW c  on(c.PARENT_ID = z.ID)
					left join CRM_LISTA_ZASOBOW a  on(a.ID  = z.ALIAS_ID and z.ALIAS_ID > 0)
					left join CRM_LISTA_ZASOBOW za on(za.ID = c.ALIAS_ID and c.ALIAS_ID > 0)
				where z.PARENT_ID = 22444  -- TODO how to find ID, Typespecial with link
			");
			$sth->execute();
			$rawConf = $sth->fetchAll();
			$conf = array();
			$conf['type'] = array();
			$conf['layer'] = array();
			foreach ($rawConf as $z) {
				if ('INNE' == $z['TYPE']) {
					if (!array_key_exists($z['ID'], $conf['type'])) {
						$conf['type'][$z['ID']] = $z['DESC'];
					}
				}
			}
			foreach ($rawConf as $z) {
				if ('TABELA' == $z['TYPE']) {
					if (!array_key_exists($z['ID'], $conf['layer'])) {
						$layer = array();
						$layer['label'] = $z['DESC'];
						$layer['tabela_id'] = $z['a_ID'];
						$layer['tabela_name'] = $z['a_DESC'];
						$layer['jednostka'] = '';
						$layer['jednostka_zasob_id'] = array();
						$layer['zasob_type'] = '';
						$layer['zasob_field'] = '';
						$layer['zasob_id'] = '';
						$layer['ilosc_field'] = '';
						$layer['type'] = array();
						$conf['layer'][$z['ID']] = $layer;
					}
					if ($z['c_ID'] > 0) {
						if ('JEDNOSTKA_' == substr($z['c_DESC'], 0, 10)) {
							$layer = $conf['layer'][$z['ID']];
							$layer['jednostka'] = substr($z['c_DESC'], 10);
							$layer['ilosc_field'] = $z['za_DESC'];
							$layer['zasob_id'] = $z['za_ID'];
							$conf['layer'][$z['ID']] = $layer;
						}
						/*
							[za_ID] => 20299
							[za_TYPE] => KOMORKA
							[za_DESC] => OznKabla
							[za_ALIAS_ID] => 0
						*/
						switch ($z['c_DESC']) {
							case 'ZASOB': {
								if ($z['za_ID'] > 0) {
									$layer = $conf['layer'][$z['ID']];
									$layer['zasob_type'] = $z['c_DESC'];
									$layer['zasob_field'] = $z['za_DESC'];
									$layer['zasob_id'] = $z['za_ID'];
									$conf['layer'][$z['ID']] = $layer;
								}
							} break;
							case 'ZASOB_ID': {
								if ($z['za_ID'] > 0) {
									$layer = $conf['layer'][$z['ID']];
									$layer['zasob_type'] = $z['c_DESC'];
									$layer['zasob_id'] = $z['za_ID'];
									$layer['zasob_label'] = $z['za_DESC'];
									$conf['layer'][$z['ID']] = $layer;
									$conf['layer'][$z['ID']]['type'][$z['za_ID']] = $z['za_DESC'];
								}
							} break;
							case 'TYPE': {
								//DBG::_(true, true, "z", $z, __CLASS__, __FUNCTION__, __LINE__);
								if (empty($z['c_ALIAS_ID'])) throw new Exception("Schema error - brak ALIAS_ID dla typu");
								if (empty($conf['type'][$z['za_ID']])) ;// TODO: throw Exception("Brak typu w conf['type']")
								$conf['layer'][$z['ID']]['type'][$z['za_ID']] = $z['za_DESC'];
							} break;
  						case 'TYPE_SZTUKA': {
  							//DBG::_(true, true, "z", $z, __CLASS__, __FUNCTION__, __LINE__);
  							if (empty($z['c_ALIAS_ID'])) throw new Exception("Schema error - brak ALIAS_ID dla typu");
  							if (empty($conf['type'][$z['za_ID']])) ;// TODO: throw Exception("Brak typu w conf['type']")
  							$conf['layer'][$z['ID']]['jednostka_zasob_id'][$z['za_ID']] = 'SZTUKA';
  						} break;
						}
					}
				}
			}
			foreach ($rawConf as $z) {
				if ('INNE' == $z['TYPE']) {
				} else if ('TABELA' == $z['TYPE']) {
				} else {
					SE_Layout::alert('warnig', "BUG: unimplemented type '{$z['TYPE']}' for zasob nr: {$z['ID']}");
				}
			}
			DBG::_('DBG', '>1', "config", $conf, __CLASS__, __FUNCTION__, __LINE__);
			{// validate schema - show warnings
				foreach ($conf['layer'] as $layer) {
					try {
						if (empty($layer['tabela_id'])) throw new Exception("brak zdefiniowanego aliasa do tabeli dla warstwy {$layer['label']}");
						if (empty($layer['jednostka'])) throw new Exception("brak jednostki dla warstwy [{$layer['tabela_id']}] {$layer['label']}");
						switch ($layer['jednostka']) {
							case 'METR': break;
							case 'SZTUKA': break;
							default: throw new Exception("Nieznana jednostka '{$layer['jednostka']}' dla warstwy  [{$layer['tabela_id']}] {$layer['label']}");
						}
					} catch (Exception $e) {
						SE_Layout::alert('warning', $e->getMessage());
					}
				}
			}
			DBG::_('DBG', '>2', "rawConf", $rawConf, __CLASS__, __FUNCTION__, __LINE__);
			$_schema['config'] = $conf;
		}

		$_schema['nr'] = "Nr projektu";
		$_schema['title'] = "Tytuł projektu";
		$_schema['ownerName'] = "Osoba prowadząca";
		$_schema['cost_total'] = "Szacowany koszt projektu [zł]";
    return $_schema;
  }

  public static function getLayerJednostka($idLayer) {
    $schema = self::getSchema();
    if (empty($schema['config']['layer'][$idLayer])) return null;// TODO: throw exception?
    return $schema['config']['layer'][$idLayer]['jednostka'];
  }

}