<?php

/**
 * @class IHMParamManagerClass
 * @brief Parameter manager
 * @details
 */
class IHMParamManagerClass
{
	protected $userParameterLoader = null;
	protected $expressionParser = null;
	protected $templateParamsManager = null;
	
	/*
	 * @brief Constructor
	*/
	function __construct()
	{
		$this->templateParamsManager = new IHMParamTemplateClass();
	}

	/*
	 * @brief Add an existing parameter
	*/
	public function addExistingParam($param, $paramsData, $templateArgs = NULL)
	{
		if ($this->isDerivedParam($param))
			return $this->addDerivedParam($param,$paramsData);
		else if ($this->isUploadedParam($param))
			return $this->addUploadedParam($param,$paramsData);
		else
			return $this->addLocalParam($param,$paramsData, $templateArgs);
		return "";
	}

	/*
	 * @brief Add a process parameter
	*/
	public function addProcessParam($paramId,$expression,$params,$sampling,$gap,$dateModif,$paramsData)
	{
		$paramsData->addProcessParamToCreate($paramId, $expression, $params, $sampling, $gap,$dateModif);

		foreach ($params as $param)
			$this->addExistingParam($param,$paramsData);

		return true;
	}

	/*
	 * @brief Detect if it's a derived parameter
	*/
	private function isDerivedParam($param)
	{
		return preg_match("#^ws_#",$param);
	}

	/*
	 * @brief Detect if it's a uploaded parameter
	*/
	private function isUploadedParam($param)
	{
		return preg_match("#^wsd_#",$param);
	}

	/*
	 * @brief Add a local parameter
	*/
	private function addLocalParam($param, $paramsData, $templateArgs)
	{
		//local parameter
		$indexes     = array();
		$calib_infos = array();
		//check for components
		$pattern = "/(?P<param>.*)\((?P<components>.*)\)/";
		preg_match_all($pattern, $param, $matches);
		if ((count($matches["param"]) > 0) && (count($matches["components"]) > 0))
		{
			$paramId       = $matches["param"][0];
			$indexes = explode(",",$matches["components"][0]);
		}
		else
			$paramId = $param;
		
		//check templated parameter
		$real_param_id = $paramId;
		if ($this->templateParamsManager->isTemplatedParam($paramId)) {
			$paramPath = $this->templateParamsManager->generateTemplatedParamFile($paramId, $templateArgs);
			$real_param_id = $this->templateParamsManager->getTemplatedParamId($paramId, $templateArgs);
			if (empty($paramPath) || !file_exists($paramPath))
				throw new Exception('Cannot generate parameter template file '.$paramId);
		}
		else {
			$paramPath = IHMConfigClass::getLocalParamDBPath().$paramId.".xml";
			if (!file_exists($paramPath))
				throw new Exception('Cannot find parameter local file '.$paramId);
		}

		$paramsData->addParamToCopy($real_param_id,$paramPath);

		$this->addLinkedLocalParams($paramId, $paramsData, $templateArgs);
			
		return array("id" => $real_param_id, "indexes" => $indexes, "calib_infos" => $calib_infos);
	}

	/*
	 * @brief Add linked parameter
	*/
	private function addLinkedLocalParams($paramId,$paramsData,$templateArgs = NULL)
	{
		$doc = new DOMDocument("1.0", "UTF-8");
		$doc->preserveWhiteSpace = false;
		$doc->formatOutput = true;

		$real_param_id = $real_param_id;
		if ($this->templateParamsManager->isTemplatedParam($paramId)) {
			$paramPath = $this->templateParamsManager->generateTemplatedParamFile($paramId, $templateArgs);
			$real_param_id = $this->templateParamsManager->getTemplatedParamId($paramId, $templateArgs);
		}
		else {
			$paramPath = IHMConfigClass::getLocalParamDBPath().$paramId.".xml";
		}
			

		if (empty($paramPath) || !$doc->load($paramPath))
			throw new Exception('Cannot find parameter local file '.$paramId);

		//<get>
		$getNodes = $doc->getElementsByTagName('get');

		if ($getNodes->length <= 0)
			throw new Exception('Parameter local file '.$paramId.' dont have a getter node');

		$getNode = $getNodes->item(0);

		//<amdaParam name="imf"/>
		$amdaParamNodes = $doc->getElementsByTagName('amdaParam');

		foreach($amdaParamNodes as $amdaParamNode)
		{
			$linkedParamId = $amdaParamNode->getAttribute('name');
			if ($linkedParamId == '')
				continue;
			$real_linked_param_id = $linkedParamId;
			if ($this->templateParamsManager->isTemplatedParam($linkedParamId)) {
				$linkedParamPath = $this->templateParamsManager->generateTemplatedParamFile($linkedParamId, $templateArgs);
				$real_linked_param_id = $this->templateParamsManager->getTemplatedParamId($linkedParamId, $templateArgs);
			}
			else
				$linkedParamPath = IHMConfigClass::getLocalParamDBPath().$linkedParamId.".xml";
			$paramsData->addParamToCopy($real_linked_param_id,$linkedParamPath);
			$this->addLinkedLocalParams($linkedParamId, $paramsData);
		}
	}

	/*
	 * @brief Add derived parameter
	*/
	private function addDerivedParam($param,$paramsData)
	{
		if (!isset($this->userParameterLoader))
			$this->userParameterLoader = new IHMUserParamLoaderClass();
		
		//get derived parameter info
		$res = $this->userParameterLoader->getDerivedParameterFromName($param);
		
		if (!$res["success"])
			throw new Exception('Error to load derived parameter file : '.$res["message"]);

		//parse expression
		if (!isset($this->expressionParser))
			$this->expressionParser = new IHMExpressionParserClass();
		$expressionInfo = $this->expressionParser->parse($res["param"]["expression"]);
		
		$paramId = $param;
		
		//create a process param for the derived parameter
		$this->addProcessParam($paramId, $expressionInfo["expression"],
				$expressionInfo['params'], $res["param"]["timestep"],
				0,$res["param"]["dateModif"],$paramsData);
		
		return array("id" => $paramId, "indexes" => array(), "calib_infos" => array());
	}

	/*
	 * @brief Add uploaded parameter
	*/
	private function addUploadedParam($param,$paramsData)
	{
		if (!isset($this->userParameterLoader))
			$this->userParameterLoader = new IHMUserParamLoaderClass();
		
		//get uploaded parameter info
		$res = $this->userParameterLoader->getUploadedParameterFromName($param);
		
		if (!$res["success"])
			throw new Exception('Error to load uploaded parameter file : '.$res["message"]);
		
		$newParamNode = $paramsData->addLocalParamToCreate($res["param"]["id"], 
				$res["param"]["info"]["viId"], $res["param"]["info"]["realVar"],
				$res["param"]["info"]["minSampling"], $res["param"]["info"]["maxSampling"],
				$res["param"]["dateModif"]);
		
		$tableDef = $res["param"]["info"]["tableDef"];
		if (isset($tableDef) && array_key_exists('tableDefType', $tableDef) && ($tableDef['tableDefType'] != 'NONE'))
		{
			switch ($tableDef['channelsDefType'])
			{
				case 'MINMAX' :
					$minMaxTable = $newParamNode->getInfo()->addTable(InfoParamTableTypeEnum::MINMAX, $res["param"]["info"]["yTitle"]);
					$minMaxTable->setUnits($res["param"]["info"]["units"]);
					switch ($tableDef['tableDefType'])
					{
						case 'SELECT' :
							$minMaxTable->setMinName($tableDef['data']['min']);
							$minMaxTable->setMaxName($tableDef['data']['max']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['min']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['max']);
							break;
						case 'MANUAL' :
							$minMaxTable->setMinName('min');
							$minMaxTable->setMaxName('max');
							$clbMinNode = $newParamNode->addClbManual('min');
							$clbMinValues = explode(',', $tableDef['data']['min']);
							foreach ($clbMinValues as $value)
								$clbMinNode->addClbValue($value);
							$clbMaxNode = $newParamNode->addClbManual('max');
							$clbMaxValues = explode(',', $tableDef['data']['max']);
							foreach ($clbMaxValues as $value)
								$clbMaxNode->addClbValue($value);
						break;
					}
					break;
				case 'BOUND'  :
					$boundTable = $newParamNode->getInfo()->addTable(InfoParamTableTypeEnum::BOUNDS, $res["param"]["info"]["yTitle"]);
					$boundTable->setUnits($res["param"]["info"]["units"]);
					switch ($tableDef['tableDefType'])
					{
						case 'SELECT' :
							$boundTable->setBoundsName($tableDef['data']['bound']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['bound']);
							break;
						case 'MANUAL' :
							$boundTable->setBoundsName('bound');
							$clbBoundNode = $newParamNode->addClbManual('bound');
							$clbBoundValues = explode(',', $tableDef['data']['bound']);
							foreach ($clbBoundValues as $value)
								$clbBoundNode->addClbValue($value);
							break;
					}
					break;
				case 'CENTER' :
					$centerTable = $newParamNode->getInfo()->addTable(InfoParamTableTypeEnum::CENTER, $res["param"]["info"]["yTitle"]);
					$centerTable->setUnits($res["param"]["info"]["units"]);
					$centerTable->setSize($tableDef['data']['width']);
					switch ($tableDef['tableDefType'])
					{
						case 'SELECT' :
							$centerTable->setCenterName($tableDef['data']['center']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['center']);
							break;
						case 'MANUAL' :
							$centerTable->setCenterName('center');
							$clbCenterNode = $newParamNode->addClbManual('center');
							$clbCenterValues = explode(',', $tableDef['data']['center']);
							foreach ($clbCenterValues as $value)
								$clbCenterNode->addClbValue($value);
							break;
					}
					break;
				case 'CENTERWIDTH' :
					$centerWidthTable = $newParamNode->getInfo()->addTable(InfoParamTableTypeEnum::CENTERWIDTH, $res["param"]["info"]["yTitle"]);
					$centerWidthTable->setUnits($res["param"]["info"]["units"]);
					switch ($tableDef['tableDefType'])
					{
						case 'SELECT' :
							$centerWidthTable->setCenterName($tableDef['data']['center']);
							$centerWidthTable->setWidthName($tableDef['data']['width']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['center']);
							$newParamNode->getParamGet()->getLocalParam($res["param"]["info"]["realVar"])->addCalibInfo($tableDef['data']['width']);
							break;
						case 'MANUAL' :
							$centerWidthTable->setCenterName('center');
							$centerWidthTable->setWidthName('width');
							$clbCenterNode = $newParamNode->addClbManual('center');
							$clbWidthNode = $newParamNode->addClbManual('width');
							$clbCenterValues = explode(',', $tableDef['data']['center']);
							foreach ($clbCenterValues as $value)
								$clbCenterNode->addClbValue($value);
							$clbWidthValues = explode(',', $tableDef['data']['width']);
							foreach ($clbWidthValues as $value)
								$clbWidthNode->addClbValue($value);
							break;
					}
					break;
			}
		}
		
		return array("id" => $res["param"]["id"], "plotType" => $res["param"]["info"]["plotType"]);
	}
}