<?php
/**
 * Piwik - free/libre analytics platform
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */
namespace Piwik\Plugins\SegmentEditor;

use Piwik\Common;
use Piwik\Config;
use Piwik\Piwik;
use Piwik\Plugins\API\API as APIMetadata;
use Piwik\View\UIControl;
use Piwik\Plugins\SegmentEditor\API as SegmentEditorAPI;

/**
 * Generates the HTML for the segment selector control (which includes the segment editor).
 */
class SegmentSelectorControl extends UIControl
{
    const TEMPLATE = "@SegmentEditor/_segmentSelector";

    /**
     * Constructor.
     */
    public function __construct($idSite = false)
    {
        parent::__construct();

        $this->jsClass = "SegmentSelectorControl";
        $this->cssIdentifier = "segmentEditorPanel";
        $this->cssClass = "piwikTopControl";

        $this->idSite = $idSite ?: Common::getRequestVar('idSite', false, 'int');

        $this->selectedSegment = Common::getRequestVar('segment', false, 'string');

        $this->isAddingSegmentsForAllWebsitesEnabled = SegmentEditor::isAddingSegmentsForAllWebsitesEnabled();

        $segments = APIMetadata::getInstance()->getSegmentsMetadata($this->idSite);

        $segmentsByCategory = array();
        foreach ($segments as $segment) {
            if ($segment['category'] == Piwik::translate('General_Visit')
                && ($segment['type'] == 'metric' && $segment['segment'] != 'visitIp')
            ) {
                $metricsLabel = Piwik::translate('General_Metrics');
                $metricsLabel[0] = strtolower($metricsLabel[0]);
                $segment['category'] .= ' (' . $metricsLabel . ')';
            }
            $segmentsByCategory[$segment['category']][] = $segment;
        }
        uksort($segmentsByCategory, array($this, 'sortSegmentCategories'));

        $this->createRealTimeSegmentsIsEnabled = Config::getInstance()->General['enable_create_realtime_segments'];
        $this->segmentsByCategory   = $segmentsByCategory;
        $this->nameOfCurrentSegment = '';
        $this->isSegmentNotAppliedBecauseBrowserArchivingIsDisabled = 0;

        $this->availableSegments = API::getInstance()->getAll($this->idSite);
        foreach ($this->availableSegments as &$savedSegment) {
            $savedSegment['name'] = Common::sanitizeInputValue($savedSegment['name']);

            if (!empty($this->selectedSegment) && $this->selectedSegment == $savedSegment['definition']) {
                $this->nameOfCurrentSegment = $savedSegment['name'];
                $this->isSegmentNotAppliedBecauseBrowserArchivingIsDisabled =
                    $this->wouldApplySegment($savedSegment) ? 0 : 1;
            }
        }

        $this->authorizedToCreateSegments = SegmentEditorAPI::getInstance()->isUserCanAddNewSegment($this->idSite);
        $this->isUserAnonymous = Piwik::isUserIsAnonymous();
        $this->segmentTranslations = $this->getTranslations();
    }

    public function getClientSideProperties()
    {
        return array('availableSegments',
                     'segmentTranslations',
                     'isSegmentNotAppliedBecauseBrowserArchivingIsDisabled',
                     'selectedSegment',
                     'authorizedToCreateSegments');
    }

    private function wouldApplySegment($savedSegment)
    {
        $isBrowserArchivingDisabled = Config::getInstance()->General['browser_archiving_disabled_enforce'];

        if (!$isBrowserArchivingDisabled) {
            return true;
        }

        return (bool) $savedSegment['auto_archive'];
    }

    public function sortSegmentCategories($a, $b)
    {
        // Custom Variables last
        if ($a == Piwik::translate('CustomVariables_CustomVariables')) {
            return 1;
        }
        return 0;
    }

    private function getTranslations()
    {
        $translationKeys = array(
            'General_OperationEquals',
            'General_OperationNotEquals',
            'General_OperationAtMost',
            'General_OperationAtLeast',
            'General_OperationLessThan',
            'General_OperationGreaterThan',
            'General_OperationContains',
            'General_OperationDoesNotContain',
            'General_OperationIs',
            'General_OperationIsNot',
            'General_OperationContains',
            'General_OperationDoesNotContain',
            'SegmentEditor_DefaultAllVisits',
            'General_DefaultAppended',
            'SegmentEditor_AddNewSegment',
            'General_Edit',
            'General_Search',
            'General_SearchNoResults',
        );
        $translations = array();
        foreach ($translationKeys as $key) {
            $translations[$key] = Piwik::translate($key);
        }
        return $translations;
    }
}