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

use Exception;
use Piwik\Piwik;

class Comparison
{
    const ID_EQUALS = 'equals';
    const ID_EQUALS_EXACTLY = 'equals_exactly';
    const ID_CONTAINS = 'contains';
    const ID_STARTS_WITH = 'starts_with';
    const ID_ENDS_WITH = 'ends_with';

    public function checkIsValidComparison($comparisonId)
    {
        $comparisons = $this->getSupportedComparisons();

        foreach ($comparisons as $comparison) {
            if ($comparison['id'] === $comparisonId) {
                return;
            }
        }

        throw new Exception(Piwik::translate('TagManager_ErrorComparisonNotSupported', $comparisonId));
    }

    /**
     * @return array
     */
    public function getSupportedComparisons()
    {
        $comparisons = array(
            ['id' => self::ID_EQUALS, 'name' => Piwik::translate('TagManager_ComparisonEquals')],
            ['id' => self::ID_EQUALS_EXACTLY, 'name' => Piwik::translate('TagManager_ComparisonEqualsExactly')],
            ['id' => self::ID_CONTAINS, 'name' => Piwik::translate('TagManager_ComparisonContains')],
            ['id' => self::ID_STARTS_WITH, 'name' => Piwik::translate('TagManager_ComparisonStartsWith')],
            ['id' => self::ID_ENDS_WITH, 'name' => Piwik::translate('TagManager_ComparisonEndsWith')],
            ['id' => 'lower_than', 'name' => Piwik::translate('TagManager_ComparisonLowerThan')],
            ['id' => 'lower_than_or_equals', 'name' => Piwik::translate('TagManager_ComparisonLowerThanOrEqual')],
            ['id' => 'greater_than', 'name' => Piwik::translate('TagManager_ComparisonGreaterThan')],
            ['id' => 'greater_than_or_equals', 'name' => Piwik::translate('TagManager_ComparisonGreaterThanOrEqual')],
            ['id' => 'regexp', 'name' => Piwik::translate('TagManager_ComparisonMatchesRegexp')],
            ['id' => 'regexp_ignore_case', 'name' => Piwik::translate('TagManager_ComparisonMatchesRegexp') . ' (' . Piwik::translate('TagManager_ComparisonIgnoreCase') . ')'],
            ['id' => 'match_css_selector', 'name' => Piwik::translate('TagManager_ComparisonMatchesCssSelector')],
        );

        $allComparisons = [];
        foreach ($comparisons as $comparison) {
            $allComparisons[] = $comparison;
            $allComparisons[] = array('id' => 'not_' . $comparison['id'], 'name' => Piwik::translate('TagManager_ComparisonNotX', $comparison['name']));
        }

        return $allComparisons;
    }
}