<?php

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

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

class OpenAireViewAdvancedSearchDatasources extends JViewLegacy {
	const LOG = 'openaire';
	const MODEL = 'search';
	const FOO = 'name';
	const NAME = 'name';
	const ENGLISH_NAME = 'englishName';
	const SUBJECT = 'subject';
	const ALL = 'all';
	const ANY = 'any';
	const DEFAULT_PAGE = 1;
	const MIN_SIZE = 10;
	const MAX_SIZE = 50;
	const SIZE_STEP = 10;	
	const MAX_PAGES = 5;
	
	public function __construct($configuration = array()) {
		parent :: __construct($configuration);
	}
	
	function display($template = NULL) {
		$locale = JFactory :: getLanguage() -> getTag();
		$model = $this -> getModel(self :: MODEL);
		$this -> statistics = $model -> getDatasourceStatistics($locale);
		$input = JFactory :: getApplication() -> input;
		$this -> itemId = JRequest :: getUInt('Itemid', 0);
		$this -> keywords = $this -> getParameter('keyword');
		$this -> fields = $this -> getParameter('field');
		$this -> constraints = $this -> getParameter('constraint');
		$this -> types = $this -> getParameter('type');
		$this -> languages = $this -> getParameter('language');
		$this -> contents = $this -> getParameter('content');
		$this -> compatibilities = $this -> getParameter('compatibility');
		$this -> filters = array();
		$type = JRequest :: getString('typeFilter');
		if ($type != NULL) {
			$this -> filters['typeFilter'] = new JObject();
			$this -> filters['typeFilter'] -> name = 'typeFilter';
			$this -> filters['typeFilter'] -> value = $type;
		}
		$language = JRequest :: getString('languageFilter');
		if ($language != NULL) {
			$this -> filters['languageFilter'] = new JObject();
			$this -> filters['languageFilter'] -> name = 'languageFilter';
			$this -> filters['languageFilter'] -> value = $language;
		}
		$content = JRequest :: getString('contentFilter');
		if ($content != NULL) {
			$this -> filters['contentFitler'] = new JObject();
			$this -> filters['contentFilter'] -> name = 'contentFilter';
			$this -> filters['contentFilter'] -> value = $content;
		}
		$compatibility = JRequest :: getString('compatibilityFilter');
		if ($compatibility != NULL) {
			$this -> filters['compatibilityFilter'] = new JObject();
			$this -> filters['compatibilityFilter'] -> name = 'compatibilityFilter';
			$this -> filters['compatibilityFilter'] -> value = $compatibility;
		}
		$this -> page = JRequest :: getUInt('page', self :: DEFAULT_PAGE);
		$this -> size = JRequest :: getUInt('size', self :: MIN_SIZE);
                $this -> size = ($this -> size > self :: MAX_SIZE || $this -> size < 1) ? self :: MIN_SIZE : $this -> size;
		if ((($this -> keywords != NULL) && ($this -> fields != NULL) && ($this -> constraints != NULL)) || ($this -> types != NULL) || ($this -> languages != NULL) || ($this -> contents != NULL) || ($this -> compatibilities != NULL)) {
			JViewLegacy :: loadHelper('PiwikHelper');
			PiwikHelper :: logPageView('advancedSearchDatasources', 'keywords=' . urlencode(implode(',', $this -> keywords)) . '&fields=' . urlencode(implode(',', $this -> fields)) . '&constraints=' . urlencode(implode(',', $this -> constraints)) . '&types=' . urlencode(implode(',', $this -> types)) . '&languages=' . urlencode(implode(',', $this -> languages)) . '&contents=' . urlencode(implode(',', $this -> contents)) . '&compatibilities=' . urlencode(implode(',', $this -> compatibilities)) . '&type=' . urlencode($type) . '&language=' . urlencode($language) . '&content=' . urlencode($content) . '&compatibility=' . urlencode($compatibility) . '&page=' . urlencode($this -> page) . '&size=' . urlencode($this -> size) . '&locale=' . urlencode($locale));
			$this -> result = $model -> advancedSearchDatasources($this -> keywords, $this -> fields, $this -> constraints, $this -> types, $this -> languages, $this -> contents, $this -> compatibilities, $type, $language, $content, $compatibility, $this -> page, $this -> size, $locale);
			$this -> totalPages = ($this -> result == NULL) ? NULL : ceil($this -> result -> totalDatasources / $this -> size);
			if ($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++;
			}			
		} else
			$this -> result = NULL;
		if (count($errors = $this -> get('Errors')) > 0) {
			JLog :: add('Error viewing advancedsearchdatasources: ' . implode("\n", $errors), JLog :: ERROR, self :: LOG);
			return FALSE;
		}
		parent :: display($template);
	}
		
	private function getParameter($name) {
		$values = JFactory :: getApplication() -> input -> get($name, NULL, NULL);
		if ($values == NULL)
			$values = array();
		else if (!is_array($values)) {
			$value = $values;
			$values = array();
			$values[] = $value;
		}
		return $values;
	}
}