<?php

// @docs in Schema_TableFactory
class Schema_TableBase {

	public $idDatabase;
	public $tblName;
	public $_types;
	public $_restrictions;
	public $_params;

	public function __construct($idDatabase, $tblName) {
		$this->idDatabase = $idDatabase;
		$this->tblName = strtolower($tblName);
		$this->_types = array();
		$this->_restrictions = array();
		$this->initTypes();
	}

	public function initTypes() {// TODO: override
		// parent::initTypes();// always call parent method
		// example: $this->_types['WWW'] = 'p5:www_link';
		// example: $this->_restrictions['WWW'] = ['maxLength' => 255]
		// TODO:? $this->_types['WWW'] = new Type_Link($params = ['maxLength' => 255, ...]);
	}

	public function getType($fieldName) {
		return V::get($fieldName, '', $this->_types);
	}

	public function fixTypes($types) {
		if (empty($this->_types)) return $types;
		foreach ($types as $fldName => $type) {
			if (array_key_exists($fldName, $this->_types)) {
				$types[$fldName]['simpleType'] = $this->_types[$fldName];
			}
			if (array_key_exists($fldName, $this->_restrictions)) {
				$types[$fldName]['restrictions'] = $this->_restrictions[$fldName];
			}
			// TODO: add default xsdElementType('simpleType', 'complexType'), xsdType(p5Type:...), ... for every field
		}
		return $types;
	}

	public function getStruct() {
		if (!empty($this->_struct)) return $this->_struct;
		$storage = DB::getStorage($this->idDatabase);
		$struct = $storage->getTableStruct($this->tblName);
		$this->_struct = $struct;
		foreach ($this->_struct as $fldName => $field) {
			$this->_struct[$fldName] = $this->convertStorageTypeToXsdP5Type($storage->getType(), $field);
		}
		return $this->_struct;
	}

	public function convertStorageTypeToXsdP5Type($storageType, $field) {
		/* cat SE/schema/types.xsd |grep 'xs:simpleType name='
			<xs:simpleType name="string">
			<xs:simpleType name="text">
			<xs:simpleType name="enumeration">
			<xs:simpleType name="set">
			<xs:simpleType name="integer">
			<xs:simpleType name="decimal">
			<xs:simpleType name="double">
			<xs:simpleType name="float">
			<xs:simpleType name="binary">
			<xs:simpleType name="hexBinary">
			<xs:simpleType name="date">
				<xs:simpleType name="dateZero">
			<xs:simpleType name="dateTime">
				<xs:simpleType name="dateTimeZero">
			<xs:simpleType name="time">
				<xs:simpleType name="timeZero">
			<xs:simpleType name="year">
				<xs:simpleType name="yearZero">
			<xs:simpleType name="geometry">
			<xs:simpleType name="polygon">
			<xs:simpleType name="point">
			<xs:simpleType name="lineString">
		*/
		$field['p5_isComplexType'] = false;
		$field['p5_type'] = 'unknown';// TODO: default type or leave undefined?
		$field['p5_restrictions'] = array();
		$field['p5_props'] = array();
		if ('mysql' == $storageType) {
			switch ($field['type']) {
				case 'tinyint':
				case 'smallint':
				case 'bigint':
				case 'int': {
						$field['p5_type'] = 'integer';
					} break;
				case 'decimal': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'float':
				case 'double': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'char':
				case 'varchar': {
						$field['p5_type'] = 'string';
					} break;
				case 'mediumtext':
				case 'longtext':
				case 'text': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'datetime': {
						$field['p5_type'] = 'dateTime';
					} break;
				case 'date': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'year': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'time': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'timestamp': {
						$field['p5_type'] = 'integer';
					} break;
				case 'point':
				case 'polygon':
				case 'geometry': {
						$field['p5_type'] = $field['type'];
					} break;
				case 'linestring': {
						$field['p5_type'] = 'lineString';
					} break;
				case 'multipoint': {
						$field['p5_type'] = 'multiPoint';// TODO: create multiPoint in types.xsd
					} break;
				case 'multipolygon': {
						$field['p5_type'] = 'multiPolygon';// TODO: create multiPolygon in types.xsd
					} break;
				case 'multilinestring': {
						$field['p5_type'] = 'multiLineString';// TODO: create multiLineString in types.xsd
					} break;
				case 'enum': {
						$field['p5_type'] = 'string';
						$enumValues = substr($field['raw_storage_type'], 6, -2);// "enum('R','W','X','C')"
						$enumValues = explode("','", $enumValues);
						$field['p5_restrictions']['enumeration'] = $enumValues;
					} break;
				case 'set': {
						$field['p5_type'] = 'set';
						$enumValues = substr($field['raw_storage_type'], 5, -2);// "set('R','W','X','C')"
						$enumValues = explode("','", $enumValues);
						// TODO: enumerations with all combinations
						// $baseComb = array(); foreach ($enumValues as $enumValue) { if ('' !== $enumValue) $baseComb[] = $enumValue; };
						// $sizeCombinations = count($baseComb);
						// $allComb = pow(2, $sizeCombinations);
						// //DBG::_(true, true, "baseCombinations", $baseComb, __CLASS__, __FUNCTION__, __LINE__);
						// for ($b = 1; $b < $allComb; $b++) {
						// 	$curValues = array();
						// 	$valBinary = sprintf("%0{$sizeCombinations}b", $b);
						// 	$binValues = str_split($valBinary);
						// 	//DBG::_(true, true, "curValues({$b}/{$valBinary})", $curValues, __CLASS__, __FUNCTION__, __LINE__);
						// 	foreach ($binValues as $idx => $isSet) {
						// 		if ($isSet) $curValues[] = $baseComb[$idx];
						// 	}
						// 	$enumValues[] = implode(",", $curValues);
						// }
						//$field['p5_restrictions']['enumeration'] = $enumValues;// TODO: use p5_props
						$field['p5_props']['multiple_enumeration'] = $enumValues;// TODO: use p5_props
					} break;
				case 'tinyblob':
				case 'mediumblob':
				case 'longblob':
				case 'blob':
				case 'binary':
				case 'varbinary': {
						$field['p5_type'] = 'hexBinary';
					} break;
				default:
					DBG::_(true, true, "TODO: storageType({$storageType}) field({$field['name']})", $field, __CLASS__, __FUNCTION__, __LINE__);
			}
		} else if ('pgsql' == $storageType) {
		} else {
		}
		return $field;
	}

	public function getPrimaryKeyField() {// TODO: use this method in TableAcl, Data_Source, etc.
		return 'ID';
	}

	public function fixItemFieldValue($fieldName, /* array */ $item) {
		return $value;
	}

	public function getFieldParam($fieldName, $paramKey) {
		return (empty($this->_params[$fieldName]))
			? null
			: (empty($this->_params[$fieldName][$paramKey]))
				? null
				: $this->_params[$fieldName][$paramKey]
		;
	}

}