<?php
/**
 * The Hosting tab for plugin settings.
 *
 * @package SEO_Pro_Stack
 * @subpackage SEO_Pro_Stack/Admin/Settings/Tabs
 */

// If this file is called directly, abort.
if (!defined('ABSPATH')) {
    exit;
}

/**
 * The Hosting tab for plugin settings.
 * Self-contained class with integrated data and functionality
 */
class SEOProStack_Tab_Hosting {

    /**
     * Tab identifier
     * 
     * @var string
     */
    private $tab_id = 'hosting';

    /**
     * Initialize the class.
     * Register any hooks or actions here.
     */
    /**
     * Hosting providers data
     * 
     * @var array
     */
    private $hosting_providers;

    /**
     * Server information
     * 
     * @var array
     */
    private $server_info;

    public function __construct() {
        // Initialize the hosting providers data
        $this->hosting_providers = $this->get_hosting_providers();
        $this->server_info = $this->get_server_info();
    }

    /**
     * Get the tab ID
     * 
     * @return string The tab ID
     */
    public function get_tab_id() {
        return $this->tab_id;
    }

    /**
     * Get the tab title
     * 
     * @return string The tab title
     */
    public function get_title() {
        return __('Hosting', 'seoprostack');
    }
    
    /**
     * Get server information
     *
     * @return array Server information
     */
    private function get_server_info() {
        global $wpdb;

        $server_info = array();

        // PHP Version
        $server_info['php_version'] = array(
            'label' => __('PHP Version', 'seoprostack'),
            'value' => phpversion(),
            'recommendation' => __('PHP 8.0 or higher recommended', 'seoprostack')
        );

        // MySQL Version
        $server_info['mysql_version'] = array(
            'label' => __('MySQL Version', 'seoprostack'),
            'value' => $wpdb->db_version(),
            'recommendation' => __('MySQL 8.0 or higher recommended', 'seoprostack')
        );

        // Server Software
        $server_info['server_software'] = array(
            'label' => __('Server Software', 'seoprostack'),
            'value' => $_SERVER['SERVER_SOFTWARE'] ?? __('Unknown', 'seoprostack'),
            'recommendation' => ''
        );

        // PHP Memory Limit
        $memory_limit = ini_get('memory_limit');
        $server_info['php_memory_limit'] = array(
            'label' => __('PHP Memory Limit', 'seoprostack'),
            'value' => $memory_limit,
            'recommendation' => __('256M or higher recommended', 'seoprostack')
        );

        // Max Upload Size
        $upload_max_filesize = ini_get('upload_max_filesize');
        $server_info['upload_max_filesize'] = array(
            'label' => __('Max Upload Size', 'seoprostack'),
            'value' => $upload_max_filesize,
            'recommendation' => __('64M or higher recommended', 'seoprostack')
        );

        return $server_info;
    }

    /**
     * Get hosting providers
     * 
     * @return array The hosting providers data
     */
    private function get_hosting_providers() {
        return array(
            'kinsta' => array(
                'name' => 'Kinsta',
                'description' => 'Premium WordPress hosting with excellent performance, security, and customer support.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://kinsta.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://kinsta.com/plans/'
                    )
                )
            ),
            'wpengine' => array(
                'name' => 'WP Engine',
                'description' => 'Managed WordPress hosting provider with solid performance and security features.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://wpengine.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://wpengine.com/plans/'
                    )
                )
            ),
            'siteground' => array(
                'name' => 'SiteGround',
                'description' => 'Popular WordPress hosting with good performance and customer support.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.siteground.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.siteground.com/wordpress-hosting.htm'
                    )
                )
            ),
            'hostinger' => array(
                'name' => 'Hostinger',
                'description' => 'Affordable WordPress hosting with good performance and user-friendly management tools.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.hostinger.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.hostinger.com/wordpress-hosting'
                    )
                )
            ),
            'hetzner' => array(
                'name' => 'Hetzner Cloud',
                'description' => 'High-performance cloud servers with excellent price-to-performance ratio for self-managed WordPress hosting.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.hetzner.com/cloud/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.hetzner.com/cloud#pricing'
                    )
                )
            ),
            'simplehost' => array(
                'name' => 'SimpleHost',
                'description' => 'Streamlined WordPress hosting with a focus on simplicity and performance.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://simplehost.so/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://simplehost.so/#pricing'
                    )
                )
            ),
            'cloudflare' => array(
                'name' => 'Cloudflare',
                'description' => 'Global cloud platform that provides CDN, security, and performance optimization services.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.cloudflare.com/en-gb/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.cloudflare.com/en-gb/plans/'
                    )
                )
            ),
            'spaceship' => array(
                'name' => 'Spaceship',
                'description' => 'Modern hosting platform with advanced features for WordPress sites.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.spaceship.com/',
                        'primary' => true
                    )
                )
            ),
            '101domain' => array(
                'name' => '101Domain',
                'description' => 'Domain registration and management service with support for hundreds of TLDs.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.101domain.com/',
                        'primary' => true
                    )
                )
            ),
            'namecheap' => array(
                'name' => 'Namecheap',
                'description' => 'Domain registrar and web hosting provider with competitive pricing and good support.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.namecheap.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.namecheap.com/hosting/shared/'
                    )
                )
            ),
            'updownio' => array(
                'name' => 'Updown.io',
                'description' => 'Simple and affordable website monitoring service with uptime checks and performance metrics.',
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://updown.io/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://updown.io/pricing'
                    )
                )
            )
        );
    }

    /**
     * Get the tab description
     * 
     * @return string The tab description
     */
    public function get_description() {
        return __('Details about your current hosting environment and recommendations for improvement.', 'seoprostack');
    }

    /**
     * Get additional hosting providers for specialized cases
     * 
     * @return array Array of additional hosting providers
     */
    private function get_additional_hosting_providers() {
        return array(
            'closte' => array(
                'name' => 'Closte',
                'description' => 'Managed WordPress hosting with advanced performance optimization and auto-scaling.',
                'features' => array(
                    'Auto-scaling architecture',
                    'Global CDN included',
                    'Advanced caching',
                    'Free SSL certificates'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://closte.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://closte.com/pricing'
                    )
                )
            ),
            'cloudron' => array(
                'name' => 'Cloudron',
                'description' => 'Self-hosted platform that makes it easy to run web applications like WordPress on your server.',
                'features' => array(
                    'One-click installation',
                    'Automatic updates',
                    'Built-in backups',
                    'SSL certificate management'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.cloudron.io/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.cloudron.io/pricing.html'
                    )
                )
            ),
            'hostinger' => array(
                'name' => 'Hostinger',
                'description' => 'Affordable WordPress hosting with good performance and user-friendly management tools.',
                'features' => array(
                    'Free domain name',
                    'Managed WordPress features',
                    'LiteSpeed cache',
                    'Weekly backups'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.hostinger.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.hostinger.com/wordpress-hosting'
                    )
                )
            ),
            'hetzner' => array(
                'name' => 'Hetzner Cloud',
                'description' => 'High-performance cloud servers with excellent price-to-performance ratio for self-managed WordPress hosting.',
                'features' => array(
                    'Scalable cloud instances',
                    'Per-minute billing',
                    'Snapshots and backups',
                    'Global data centers'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.hetzner.com/cloud/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.hetzner.com/cloud#pricing'
                    )
                )
            ),
            'simplehost' => array(
                'name' => 'SimpleHost',
                'description' => 'Streamlined WordPress hosting with a focus on simplicity and performance.',
                'features' => array(
                    'Simplified hosting dashboard',
                    'Pre-optimized WordPress',
                    'Automated backups',
                    'Email hosting included'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://simplehost.so/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://simplehost.so/#pricing'
                    )
                )
            ),
            'cloudflare' => array(
                'name' => 'Cloudflare',
                'description' => 'Global cloud platform that provides CDN, security, and performance optimization services.',
                'features' => array(
                    'Global CDN network',
                    'DDoS protection',
                    'Web application firewall',
                    'Performance optimization'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.cloudflare.com/en-gb/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.cloudflare.com/en-gb/plans/'
                    )
                )
            ),
            'spaceship' => array(
                'name' => 'Spaceship',
                'description' => 'Modern hosting platform with advanced features for WordPress sites.',
                'features' => array(
                    'Advanced WordPress tools',
                    'Optimized for speed',
                    'Developer-friendly features',
                    'Smart caching system'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.spaceship.com/',
                        'primary' => true
                    )
                )
            ),
            '101domain' => array(
                'name' => '101Domain',
                'description' => 'Domain registration and management service with support for hundreds of TLDs.',
                'features' => array(
                    'Extensive TLD selection',
                    'Domain privacy protection',
                    'Expert domain support',
                    'Bulk domain management'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.101domain.com/',
                        'primary' => true
                    )
                )
            ),
            'namecheap' => array(
                'name' => 'Namecheap',
                'description' => 'Domain registrar and web hosting provider with competitive pricing and good support.',
                'features' => array(
                    'Free WhoisGuard protection',
                    'Competitive domain pricing',
                    'Reliable hosting services',
                    'Excellent support'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://www.namecheap.com/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://www.namecheap.com/hosting/shared/'
                    )
                )
            ),
            'updownio' => array(
                'name' => 'Updown.io',
                'description' => 'Simple and affordable website monitoring service with uptime checks and performance metrics.',
                'features' => array(
                    'Real-time monitoring',
                    'Performance metrics',
                    'Notification alerts',
                    'Detailed reports'
                ),
                'button_group' => array(
                    array(
                        'text' => 'Home Page',
                        'url' => 'https://updown.io/',
                        'primary' => true
                    ),
                    array(
                        'text' => 'Pricing',
                        'url' => 'https://updown.io/pricing'
                    )
                )
            )
        );
    }

    /**
     * Render the tab content.
     */
    public function render() {
        // Use the self-contained data
        $server_info = $this->server_info;
        $hosting_providers = $this->hosting_providers;
        
        echo '<div class="tab-content" id="' . esc_attr($this->tab_id) . '">;
        if (function_exists('wp_seoprostack_get_hosting_providers') && empty($GLOBALS['_wp_seoprostack_hosting_loaded'])) {
            // Optional: merge with any providers from the external function to ensure none are lost
            $external_providers = wp_seoprostack_get_hosting_providers();
            $hosting_providers = array_merge($external_providers, $hosting_providers);
            $GLOBALS['_wp_seoprostack_hosting_loaded'] = true;
        }
        
        ?>
        <div class="seoprostack-settings-content tab-content" id="<?php echo esc_attr($this->get_tab_id()); ?>">
            <div class="seoprostack-setting-section">
                <h2><?php esc_html_e('Hosting Information', 'seoprostack'); ?></h2>
                <p class="description"><?php echo esc_html($this->get_description()); ?></p>
                
                <div class="seoprostack-server-info">
                    <h3><?php esc_html_e('Server Environment', 'seoprostack'); ?></h3>
                    <table class="seoprostack-info-table">
                        <tr>
                            <th><?php esc_html_e('PHP Version', 'seoprostack'); ?></th>
                            <td>
                                <?php echo esc_html($server_info['php_version']); ?>
                                <?php echo $this->get_status_icon($server_info['php_status']); ?>
                            </td>
                            <td class="seoprostack-info-note">
                                <?php echo esc_html($server_info['php_note']); ?>
                            </td>
                        </tr>
                        <tr>
                            <th><?php esc_html_e('MySQL Version', 'seoprostack'); ?></th>
                            <td>
                                <?php echo esc_html($server_info['mysql_version']); ?>
                                <?php echo $this->get_status_icon($server_info['mysql_status']); ?>
                            </td>
                            <td class="seoprostack-info-note">
                                <?php echo esc_html($server_info['mysql_note']); ?>
                            </td>
                        </tr>
                        <tr>
                            <th><?php esc_html_e('WordPress Version', 'seoprostack'); ?></th>
                            <td>
                                <?php echo esc_html($server_info['wp_version']); ?>
                                <?php echo $this->get_status_icon($server_info['wp_status']); ?>
                            </td>
                            <td class="seoprostack-info-note">
                                <?php echo esc_html($server_info['wp_note']); ?>
                            </td>
                        </tr>
                        <tr>
                            <th><?php esc_html_e('Memory Limit', 'seoprostack'); ?></th>
                            <td>
                                <?php echo esc_html($server_info['memory_limit']); ?>
                                <?php echo $this->get_status_icon($server_info['memory_status']); ?>
                            </td>
                            <td class="seoprostack-info-note">
                                <?php echo esc_html($server_info['memory_note']); ?>
                            </td>
                        </tr>
                        <tr>
                            <th><?php esc_html_e('Max Execution Time', 'seoprostack'); ?></th>
                            <td>
                                <?php echo esc_html($server_info['max_execution_time']); ?> seconds
                                <?php echo $this->get_status_icon($server_info['execution_status']); ?>
                            </td>
                            <td class="seoprostack-info-note">
                                <?php echo esc_html($server_info['execution_note']); ?>
                            </td>
                        </tr>
                    </table>
                </div>
                
                <div class="seoprostack-hosting-recommendations">
                    <h3><?php esc_html_e('Recommended Hosting Providers', 'seoprostack'); ?></h3>
                    <p><?php esc_html_e('These hosting providers offer excellent performance for WordPress sites and are recommended for optimal SEO results.', 'seoprostack'); ?></p>
                    
                    <div class="seoprostack-hosting-grid">
                        <?php foreach ($hosting_providers as $key => $provider) : ?>
                            <div class="seoprostack-hosting-card">
                                <div class="seoprostack-hosting-card-header">
                                    <h4><?php echo esc_html($provider['name']); ?></h4>
                                </div>
                                <div class="seoprostack-hosting-card-content">
                                    <p><?php echo esc_html($provider['description']); ?></p>
                                    <?php if (!empty($provider['features'])) : ?>
                                        <ul class="seoprostack-hosting-features">
                                            <?php foreach ($provider['features'] as $feature) : ?>
                                                <li><?php echo esc_html($feature); ?></li>
                                            <?php endforeach; ?>
                                        </ul>
                                    <?php endif; ?>
                                </div>
                                <div class="seoprostack-hosting-card-footer">
                                    <?php foreach ($provider['button_group'] as $button) : ?>
                                        <a href="<?php echo esc_url($button['url']); ?>" class="seoprostack-button<?php echo ($button['primary']) ? ' primary' : ''; ?>" target="_blank">
                                            <?php echo esc_html($button['text']); ?>
                                        </a>
                                    <?php endforeach; ?>
                                </div>
                            </div>
                        <?php endforeach; ?>
                    </div>
                </div>
            </div>
        </div>
        <?php
    }
    
    /**
     * Get server information.
     *
     * @return array Server information.
     */
    private function get_server_info() {
        global $wpdb;
        
        // PHP version
        $php_version = phpversion();
        $php_status = version_compare($php_version, '7.4', '>=') ? 'good' : (version_compare($php_version, '7.0', '>=') ? 'warning' : 'bad');
        $php_note = version_compare($php_version, '7.4', '>=') ? __('Your PHP version is up to date.', 'seoprostack') : __('We recommend PHP 7.4 or higher for optimal performance and security.', 'seoprostack');
        
        // MySQL version
        $mysql_version = $wpdb->db_version();
        $mysql_status = version_compare($mysql_version, '5.6', '>=') ? 'good' : 'warning';
        $mysql_note = version_compare($mysql_version, '5.6', '>=') ? __('Your MySQL version is sufficient.', 'seoprostack') : __('We recommend MySQL 5.6 or higher for better performance.', 'seoprostack');
        
        // WordPress version
        $wp_version = get_bloginfo('version');
        $wp_status = version_compare($wp_version, '5.8', '>=') ? 'good' : (version_compare($wp_version, '5.5', '>=') ? 'warning' : 'bad');
        $wp_note = version_compare($wp_version, '5.8', '>=') ? __('Your WordPress version is up to date.', 'seoprostack') : __('We recommend updating to the latest version of WordPress.', 'seoprostack');
        
        // Memory limit
        $memory_limit = ini_get('memory_limit');
        $memory_limit_bytes = wp_convert_hr_to_bytes($memory_limit);
        $memory_status = $memory_limit_bytes >= 256 * 1024 * 1024 ? 'good' : ($memory_limit_bytes >= 128 * 1024 * 1024 ? 'warning' : 'bad');
        $memory_note = $memory_limit_bytes >= 256 * 1024 * 1024 ? __('Your memory limit is sufficient.', 'seoprostack') : __('We recommend a memory limit of at least 256MB.', 'seoprostack');
        
        // Max execution time
        $max_execution_time = ini_get('max_execution_time');
        $execution_status = $max_execution_time >= 180 || $max_execution_time == 0 ? 'good' : ($max_execution_time >= 60 ? 'warning' : 'bad');
        $execution_note = $max_execution_time >= 180 || $max_execution_time == 0 ? __('Your max execution time is sufficient.', 'seoprostack') : __('We recommend a max execution time of at least 180 seconds.', 'seoprostack');
        
        return array(
            'php_version' => $php_version,
            'php_status' => $php_status,
            'php_note' => $php_note,
            'mysql_version' => $mysql_version,
            'mysql_status' => $mysql_status,
            'mysql_note' => $mysql_note,
            'wp_version' => $wp_version,
            'wp_status' => $wp_status,
            'wp_note' => $wp_note,
            'memory_limit' => $memory_limit,
            'memory_status' => $memory_status,
            'memory_note' => $memory_note,
            'max_execution_time' => $max_execution_time,
            'execution_status' => $execution_status,
            'execution_note' => $execution_note
        );
    }
    
    /**
     * Get a status icon based on the status.
     *
     * @param string $status Status (good, warning, or bad).
     * @return string Status icon HTML.
     */
    private function get_status_icon($status) {
        switch ($status) {
            case 'good':
                return '<span class="seoprostack-status-icon good dashicons dashicons-yes-alt"></span>';
            case 'warning':
                return '<span class="seoprostack-status-icon warning dashicons dashicons-warning"></span>';
            case 'bad':
                return '<span class="seoprostack-status-icon bad dashicons dashicons-dismiss"></span>';
            default:
                return '';
        }
    }
}