/**
 * Plugin Name: Tint Quote Sender
 * Plugin URI: https://protintrva.com/plugins/tint-quote-sender
 * Description: Instant tint quote calculator with customizable vehicle types, packages, and lead capture
 * Version: 1.0.0
 * Author: Aaron H.
 * Author URI: https://apcsplugins.com
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: tint-quote-sender
 * Domain Path: /languages
 */

// Exit if accessed directly
if (!defined('ABSPATH')) {
    exit;
}

// Define plugin constants
define('TQS_VERSION', '1.0.0');
define('TQS_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('TQS_PLUGIN_URL', plugin_dir_url(__FILE__));
define('TQS_PLUGIN_BASENAME', plugin_basename(__FILE__));

/**
 * Main Plugin Class
 * 
 * Handles plugin initialization, hooks, and core functionality
 */
final class Tint_Quote_Sender {
    
    /**
     * Single instance of the plugin
     * @var Tint_Quote_Sender
     */
    private static $instance = null;
    
    /**
     * Get plugin instance
     * @return Tint_Quote_Sender
     */
    public static function instance() {
        if (is_null(self::$instance)) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Constructor - Private to enforce singleton pattern
     */
    private function __construct() {
        $this->includes();
        $this->init_hooks();
    }
    
    /**
     * Include required files
     * Modular structure for maintainability
     */
    private function includes() {
        // Core classes
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-core.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-settings.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-shortcodes.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-frontend.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-admin.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-database.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-email.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-history.php';
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-validation.php';
        
        // Helper functions
        require_once TQS_PLUGIN_DIR . 'includes/tqs-functions.php';
    }
    
    /**
     * Initialize WordPress hooks
     */
    private function init_hooks() {
        // Activation/Deactivation hooks
        register_activation_hook(__FILE__, array($this, 'activate'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate'));
    }
    
    /**
     * Plugin activation
     * Creates database tables and sets defaults
     */
    public function activate() {
        // Load database class to create tables
        require_once TQS_PLUGIN_DIR . 'includes/class-tqs-database.php';
        TQS_Database::install();
        
        // Set default admin options
        TQS_Settings::set_defaults();
        
        // Flush rewrite rules
        flush_rewrite_rules();
    }
    
    /**
     * Plugin deactivation
     * Cleans up scheduled tasks
     */
    public function deactivate() {
        // Clear any scheduled hooks (if we add cron jobs later)
        wp_clear_scheduled_hook('tqs_scheduled_cleanup');
        
        // Flush rewrite rules
        flush_rewrite_rules();
    }
    
    /**
     * Get TQS_Core instance
     * @return TQS_Core
     */
    public function get_core() {
        return TQS_Core::instance();
    }
}

/**
 * Initialize the plugin
 * Using function instead of direct class instantiation for hook compatibility
 */
function tint_quote_sender() {
    return Tint_Quote_Sender::instance();
}

// Initialize the plugin on WordPress init
add_action('plugins_loaded', 'tint_quote_sender');

/**
 * Helper function to escape output
 * @param string $text Text to escape
 * @return string Escaped text
 */
function tqs_esc($text) {
    echo esc_html(htmlspecialchars($text));
}

/**
 * Helper function to escape and return
 * @param string $text Text to escape
 * @return string Escaped text
 */
function tqs_esc_attr($text) {
    return esc_attr($text);
}

/**
 * Helper function to sanitize email
 * @param string $email Email address
 * @return string Sanitized email
 */
function tqs_sanitize_email($email) {
    return sanitize_email($email);
}

/**
 * Helper function to sanitize phone
 * @param string $phone Phone number
 * @return string Sanitized phone
 */
function tqs_sanitize_phone($phone) {
    // Remove all non-numeric characters except +, -, (, ), and space
    return preg_replace('/[^0-9+\-\s()]/', '', $phone);
}

/**
 * Helper function to sanitize price
 * @param float $price Price value
 * @return float Sanitized price
 */
function tqs_sanitize_price($price) {
    return floatval(sanitize_text_field($price));
}

// Load text domain for translations
add_action('plugins_loaded', function() {
    load_plugin_textdomain('tint-quote-sender', false, dirname(TQS_PLUGIN_BASENAME) . '/languages');
});