<?php

defined('_JEXEC') or die('Access denied');

jimport('joomla.application.component.view');
jimport('joomla.environment.request');
jimport('joomla.log.log');

class OpenAireViewSearchDatasets extends JViewLegacy{
	const LOG = 'openaire';
	const MODEL = 'search';
	const DEFAULT_PAGE = 1;
	const DEFAULT_SIZE = 10;
	const MAX_PAGES = 5;
	
	function display($template = NULL) {
		$model = $this -> getModel(self :: MODEL);
		$locale = JFactory :: getLanguage() -> getTag();
		$this -> itemId = JRequest :: getUInt('Itemid', 0);
		$this -> keyword = JRequest :: getString('keyword');
		$this -> filters = array();
		$type = JRequest :: getString('type');
		if ($type != NULL) {
			$this -> filters['type'] = new JObject();
			$this -> filters['type'] -> name = 'type';
			$this -> filters['type'] -> value = $type;
		}
		$language = JRequest :: getString('language');
		if ($language != NULL) {
			$this -> filters['language'] = new JObject();
			$this -> filters['language'] -> name = 'language';
			$this -> filters['language'] -> value = $language;
		}
		$funder = JRequest :: getString('funder');
		if ($funder != NULL) {
			$this -> filters['funder'] = new JObject();
			$this -> filters['funder'] -> name = 'funder';
			$this -> filters['funder'] -> value = $funder;
		}
		$fundingStream = JRequest :: getString('fundingStream');
		if ($fundingStream != NULL) {
			$this -> filters['fundingStream'] = new JObject();
			$this -> filters['fundingStream'] -> name = 'fundingStream';
			$this -> filters['fundingStream'] -> value = $fundingStream;
		}
		$fundingStreamLevel1 = JRequest :: getString('fundingStreamLevel1');
		if ($fundingStreamLevel1 != NULL) {
			$this -> filters['fundingStreamLevel1'] = new JObject();
			$this -> filters['fundingStreamLevel1'] -> name = 'fundingStreamLevel1';
			$this -> filters['fundingStreamLevel1'] -> value = $fundingStreamLevel1;
		}
                $fundingStreamLevel2 = JRequest :: getString('fundingStreamLevel2');
		if ($fundingStreamLevel2 != NULL) {
			$this -> filters['fundingStreamLevel2'] = new JObject();
			$this -> filters['fundingStreamLevel2'] -> name = 'fundingStreamLevel2';
			$this -> filters['fundingStreamLevel2'] -> value = $fundingStreamLevel2;
		}
		$year = JRequest :: getUInt('year', NULL);
		if ($year != NULL) {
			$this -> filters['year'] = new JObject();
			$this -> filters['year'] -> name = 'year';
			$this -> filters['year'] -> value = $year;
		}
		$accessMode = JRequest :: getString('accessMode');
		if ($accessMode != NULL) {
			$this -> filters['accessMode'] = new JObject();
			$this -> filters['accessMode'] -> name = 'accessMode';
			$this -> filters['accessMode'] -> value = $accessMode;
		}
		$datasource = JRequest :: getString('datasource');
		if ($datasource != NULL) {
			$this -> filters['datasource'] = new JObject();
			$this -> filters['datasource'] -> name = 'datasource';
			$this -> filters['datasource'] -> value = $datasource;
		}
		$this -> page = JRequest :: getUInt('page', self :: DEFAULT_PAGE);
		$this -> size = self :: DEFAULT_SIZE; //JRequest :: getUInt('size', self :: DEFAULT_SIZE);
		if ($this -> keyword == NULL)
			$this -> statistics = $model -> getDatasetStatistics($locale, false);
		else {
			JViewLegacy:: loadHelper('PiwikHelper');
			PiwikHelper :: logPageView('searchDatasets', 'keyword=' . urlencode($this -> keyword) . '&type=' . urlencode($type) . '&language=' . urlencode($language) . '&funder=' . urlencode($funder) . '&fundingStream=' . urlencode($fundingStream) . '&fundingStreamLevel1=' . urlencode($fundingStreamLevel1) . '&year=' . urlencode($year) . '&accessMode=' . urlencode($accessMode) . '&datasource=' . urlencode($datasource) . '&page=' . urlencode($this -> page) . '&size=' . urlencode($this -> size) . '&locale=' . urlencode($locale));
			$this -> result = $model -> searchDatasets($this -> keyword, $type, $language, $funder, $fundingStream, $fundingStreamLevel1, $fundingStreamLevel2, $year, $accessMode, $datasource, $this -> page, $this -> size, $locale,TRUE);			
			$this -> totalPages = ($this -> result == NULL) ? NULL : ceil($this -> result -> totalDatasets / $this -> size);
			if ($this -> totalPages == NULL)
				$this -> totalPages = 1;
                        $this -> page = ($this -> page > $this -> totalPages)? $this -> totalPages:$this -> page;
			$this -> pagingStart = $this -> page;
			$this -> pagingEnd = $this -> page;
			while (($this -> pagingEnd - $this -> pagingStart < self :: MAX_PAGES - 1) && (($this -> pagingStart != 1) || ($this -> pagingEnd != $this -> totalPages))) {
				if ($this -> pagingStart > 1)
					$this -> pagingStart --;
				if ($this -> pagingEnd < $this -> totalPages)
					$this -> pagingEnd++;
			}			
		}
		if (count($errors = $this -> get('Errors')) > 0) {
			JLog :: add('Error viewing searchdatasets: ' . implode("\n", $errors), JLog :: ERROR, self :: LOG);
			return FALSE;
		}
		parent :: display($template);
	}
}