<?php
/**
 * TigerStyle Whiskers Cross-Border Compliance
 * 
 * Navigate international privacy boundaries with feline precision - every territory has its rules!
 */

// Prevent direct access
if (!defined('ABSPATH')) {
    exit;
}

class TigerStyleWhiskers_CrossBorder {
    
    /**
     * Single instance
     */
    private static $instance = null;
    
    /**
     * Supported jurisdictions
     */
    private $jurisdictions = array();
    
    /**
     * Get instance
     */
    public static function instance() {
        if (is_null(self::$instance)) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Constructor
     */
    private function __construct() {
        $this->init_cross_border();
    }
    
    /**
     * Initialize cross-border compliance
     */
    private function init_cross_border() {
        $this->define_jurisdictions();
        add_action('tigerstyle_whiskers_geo_detected', array($this, 'handle_jurisdiction_change'));
    }
    
    /**
     * Define supported jurisdictions
     */
    private function define_jurisdictions() {
        $this->jurisdictions = array(
            'EU' => array(
                'name' => __('European Union (GDPR)', 'tigerstyle-whiskers'),
                'privacy_level' => 'strict',
                'required_notices' => array('cookie_consent', 'privacy_policy', 'data_processing'),
                'user_rights' => array('access', 'rectification', 'erasure', 'portability', 'objection'),
                'consent_requirements' => 'explicit',
                'data_retention_limits' => true
            ),
            'US_CA' => array(
                'name' => __('California (CCPA/CPRA)', 'tigerstyle-whiskers'),
                'privacy_level' => 'moderate',
                'required_notices' => array('privacy_policy', 'do_not_sell'),
                'user_rights' => array('know', 'delete', 'opt_out', 'non_discrimination'),
                'consent_requirements' => 'opt_out',
                'data_retention_limits' => false
            ),
            'BR' => array(
                'name' => __('Brazil (LGPD)', 'tigerstyle-whiskers'),
                'privacy_level' => 'strict',
                'required_notices' => array('privacy_policy', 'data_processing'),
                'user_rights' => array('access', 'correction', 'anonymization', 'portability'),
                'consent_requirements' => 'explicit',
                'data_retention_limits' => true
            ),
            'CA' => array(
                'name' => __('Canada (PIPEDA)', 'tigerstyle-whiskers'),
                'privacy_level' => 'moderate',
                'required_notices' => array('privacy_policy'),
                'user_rights' => array('access', 'correction'),
                'consent_requirements' => 'meaningful',
                'data_retention_limits' => true
            ),
            'default' => array(
                'name' => __('Default Privacy Standards', 'tigerstyle-whiskers'),
                'privacy_level' => 'basic',
                'required_notices' => array('privacy_policy'),
                'user_rights' => array('access'),
                'consent_requirements' => 'opt_in',
                'data_retention_limits' => false
            )
        );
    }
    
    /**
     * Handle jurisdiction change
     */
    public function handle_jurisdiction_change($geo_data) {
        $jurisdiction = $this->determine_jurisdiction($geo_data);
        $this->apply_jurisdiction_settings($jurisdiction);
    }
    
    /**
     * Determine applicable jurisdiction
     */
    public function determine_jurisdiction($geo_data) {
        $country = $geo_data['country'] ?? '';
        $region = $geo_data['region'] ?? '';
        
        // EU countries
        $eu_countries = array('DE', 'FR', 'IT', 'ES', 'NL', 'BE', 'AT', 'PT', 'IE', 'FI', 'SE', 'DK', 'PL', 'CZ', 'HU', 'SK', 'SI', 'HR', 'BG', 'RO', 'EE', 'LV', 'LT', 'LU', 'MT', 'CY', 'GR');
        
        if (in_array($country, $eu_countries)) {
            return 'EU';
        }
        
        if ($country === 'US' && $region === 'CA') {
            return 'US_CA';
        }
        
        if ($country === 'BR') {
            return 'BR';
        }
        
        if ($country === 'CA') {
            return 'CA';
        }
        
        return 'default';
    }
    
    /**
     * Apply jurisdiction-specific settings
     */
    private function apply_jurisdiction_settings($jurisdiction_key) {
        if (!isset($this->jurisdictions[$jurisdiction_key])) {
            $jurisdiction_key = 'default';
        }
        
        $jurisdiction = $this->jurisdictions[$jurisdiction_key];
        
        // Update consent requirements
        $this->update_consent_settings($jurisdiction);
        
        // Update privacy notices
        $this->update_privacy_notices($jurisdiction);
        
        // Store current jurisdiction
        update_option('tigerstyle_whiskers_current_jurisdiction', $jurisdiction_key);
        
        // Trigger action for other modules
        do_action('tigerstyle_whiskers_jurisdiction_applied', $jurisdiction_key, $jurisdiction);
    }
    
    /**
     * Update consent settings based on jurisdiction
     */
    private function update_consent_settings($jurisdiction) {
        $consent_settings = get_option('tigerstyle_whiskers_consent_settings', array());
        
        $consent_settings['consent_type'] = $jurisdiction['consent_requirements'];
        $consent_settings['privacy_level'] = $jurisdiction['privacy_level'];
        $consent_settings['user_rights'] = $jurisdiction['user_rights'];
        
        update_option('tigerstyle_whiskers_consent_settings', $consent_settings);
    }
    
    /**
     * Update privacy notices based on jurisdiction
     */
    private function update_privacy_notices($jurisdiction) {
        $notice_settings = get_option('tigerstyle_whiskers_notice_settings', array());
        
        $notice_settings['required_notices'] = $jurisdiction['required_notices'];
        $notice_settings['data_retention_limits'] = $jurisdiction['data_retention_limits'];
        
        update_option('tigerstyle_whiskers_notice_settings', $notice_settings);
    }
    
    /**
     * Get current jurisdiction
     */
    public function get_current_jurisdiction() {
        $jurisdiction_key = get_option('tigerstyle_whiskers_current_jurisdiction', 'default');
        return $this->jurisdictions[$jurisdiction_key] ?? $this->jurisdictions['default'];
    }
    
    /**
     * Check if feature is required by current jurisdiction
     */
    public function is_feature_required($feature) {
        $jurisdiction = $this->get_current_jurisdiction();
        return in_array($feature, $jurisdiction['required_notices']);
    }
    
    /**
     * Get compliance status for current jurisdiction
     */
    public function get_compliance_status() {
        $jurisdiction = $this->get_current_jurisdiction();
        $status = array(
            'jurisdiction' => $jurisdiction['name'],
            'privacy_level' => $jurisdiction['privacy_level'],
            'compliance_score' => 0,
            'required_features' => $jurisdiction['required_notices'],
            'missing_features' => array(),
            'recommendations' => array()
        );
        
        // Check each required feature
        foreach ($jurisdiction['required_notices'] as $feature) {
            if ($this->is_feature_implemented($feature)) {
                $status['compliance_score'] += 1;
            } else {
                $status['missing_features'][] = $feature;
                $status['recommendations'][] = $this->get_feature_recommendation($feature);
            }
        }
        
        // Calculate percentage
        $total_features = count($jurisdiction['required_notices']);
        $status['compliance_percentage'] = $total_features > 0 ? ($status['compliance_score'] / $total_features) * 100 : 100;
        
        return $status;
    }
    
    /**
     * Check if a feature is implemented
     */
    private function is_feature_implemented($feature) {
        switch ($feature) {
            case 'cookie_consent':
                return class_exists('TigerStyleWhiskers_CookieConsent');
            case 'privacy_policy':
                return !empty(get_option('wp_page_for_privacy_policy'));
            case 'data_processing':
                return class_exists('TigerStyleWhiskers_DataMapper');
            case 'do_not_sell':
                // Check if "Do Not Sell" option is available
                return get_option('tigerstyle_whiskers_do_not_sell_enabled', false);
            default:
                return false;
        }
    }
    
    /**
     * Get recommendation for missing feature
     */
    private function get_feature_recommendation($feature) {
        $recommendations = array(
            'cookie_consent' => __('Implement granular cookie consent banner', 'tigerstyle-whiskers'),
            'privacy_policy' => __('Create comprehensive privacy policy', 'tigerstyle-whiskers'),
            'data_processing' => __('Document data processing activities', 'tigerstyle-whiskers'),
            'do_not_sell' => __('Add "Do Not Sell My Personal Information" option', 'tigerstyle-whiskers')
        );
        
        return $recommendations[$feature] ?? __('Implementation required', 'tigerstyle-whiskers');
    }
}