<?php
/**
 * Plugin Name:       Quiztech Assessment Platform
 * Plugin URI:        https://quiztech.com/
 * Description:       A platform for creating assessments, inviting applicants, and managing results.
 * Version:           0.1.0
 * Requires at least: 5.2
 * Requires PHP:      7.2
 * Author:            Your Name / Company Name
 * Author URI:        https://yourwebsite.com/
 * License:           GPL v2 or later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       quiztech
 * Domain Path:       /languages
 */

// If this file is called directly, abort.
if ( ! \defined( 'WPINC' ) ) {
	die;
}

/**
 * Define constants
 */
\define( 'QUIZTECH_VERSION', '0.1.0' );
\define( 'QUIZTECH_PLUGIN_DIR', \plugin_dir_path( __FILE__ ) );
\define( 'QUIZTECH_PLUGIN_URL', \plugin_dir_url( __FILE__ ) );
\define( 'QUIZTECH_PLUGIN_FILE', __FILE__ );

/**
 * Load Composer autoloader.
 */
require_once __DIR__ . '/vendor/autoload.php';

/**
 * Load necessary procedural files not handled by PSR-4 autoloading.
 */
require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/roles.php';
require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/post-types.php';
require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/taxonomies.php';

/**
 * Load plugin dependencies. (Now handled by autoloading)
 */
// require_once QUIZTECH_PLUGIN_DIR . 'includes/post-types.php'; // Autoloaded
// require_once QUIZTECH_PLUGIN_DIR . 'includes/taxonomies.php'; // Autoloaded
// require_once QUIZTECH_PLUGIN_DIR . 'includes/roles.php'; // Autoloaded
/**
 * The core plugin class that is used to define internationalization,
 * admin-specific hooks, and public-facing site hooks.
 */
// require plugin_dir_path( __FILE__ ) . 'includes/class-quiztech.php';

/**
 * Begins execution of the plugin.
 *
 * Since everything within the plugin is registered via hooks,
 * then kicking off the plugin from this point in the file does
 * not affect the page life cycle.
 *
 * @since    0.1.0
 */
function run_quiztech() {

	// $plugin = new Quiztech();
	// $plugin->run();

}
// run_quiztech();

// Placeholder for activation/deactivation hooks
\register_activation_hook( __FILE__, __NAMESPACE__ . '\activate_quiztech' );
\register_deactivation_hook( __FILE__, __NAMESPACE__ . '\deactivate_quiztech' );

/**
 * The code that runs during plugin activation.
 * This action is documented in includes/class-quiztech-activator.php
 */
function activate_quiztech() {
	global $wpdb;
	$charset_collate = $wpdb->get_charset_collate();
	$table_name = $wpdb->prefix . 'quiztech_invitations';

	$sql = "CREATE TABLE {$table_name} (
		id mediumint(9) NOT NULL AUTO_INCREMENT,
		token varchar(32) NOT NULL,
		job_id bigint(20) unsigned NOT NULL,
		assessment_id bigint(20) unsigned NOT NULL,
		applicant_email varchar(255) NOT NULL,
		status varchar(20) NOT NULL DEFAULT 'pending',
		created_timestamp datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
		expiry_timestamp datetime DEFAULT NULL,
		PRIMARY KEY  (id),
		UNIQUE KEY token (token),
		KEY job_id (job_id),
		KEY assessment_id (assessment_id),
		KEY applicant_email (applicant_email(191)),
		KEY status (status)
	) {$charset_collate};";

	require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
	\dbDelta( $sql );

	// Call the namespaced function for roles
	\Quiztech\AssessmentPlatform\Includes\quiztech_add_roles_and_capabilities();
	\flush_rewrite_rules(); // Ensure rewrite rules are updated for CPTs/taxonomies
}

/**
 * The code that runs during plugin deactivation.
 * This action is documented in includes/class-quiztech-deactivator.php
 */
function deactivate_quiztech() {
	// Call the namespaced function
	\Quiztech\AssessmentPlatform\Includes\quiztech_remove_roles_and_capabilities();
	\flush_rewrite_rules(); // Clean up rewrite rules
}
/**
 * Initialize the plugin's features.
 */
function quiztech_init() {
	// Initialize frontend handler for invitation links
	$frontend_handler = new \Quiztech\AssessmentPlatform\Includes\FrontendHandler();
	$frontend_handler->init_hooks();


	// Initialize AJAX handler for assessment interactions
	\Quiztech\AssessmentPlatform\Includes\Ajax\AssessmentAjaxHandler::init();

	// Initialize Admin-specific features
	if ( is_admin() ) {
		$admin_list_tables = new \Quiztech\AssessmentPlatform\Admin\AdminListTables();
		$admin_list_tables->register_hooks();

		$settings_page = new \Quiztech\AssessmentPlatform\Admin\SettingsPage();
		$settings_page->register_hooks();

        $job_metaboxes = new \Quiztech\AssessmentPlatform\Admin\JobMetaboxes();
        $job_metaboxes->register_hooks();
	}

	// Future core classes (e.g., Shortcode handlers) should be instantiated here.
}
add_action( 'plugins_loaded', 'quiztech_init' );


/**
 * Configure PHPMailer to use SMTP settings if enabled.
 *
 * @param PHPMailer\PHPMailer\PHPMailer $phpmailer The PHPMailer instance.
 */
function quiztech_configure_smtp( $phpmailer ) {
    $options = get_option( 'quiztech_settings', [] );

    // Check if SMTP is enabled in settings
    if ( empty( $options['smtp_enabled'] ) || ! $options['smtp_enabled'] ) {
        return; // SMTP not enabled, do nothing
    }

    // Basic validation
    if ( empty( $options['smtp_host'] ) || empty( $options['smtp_port'] ) ) {
        // Optionally log an error or add an admin notice here
        error_log('Quiztech SMTP Error: Host or Port not configured.');
        return; // Cannot configure SMTP without host and port
    }

    // Set mailer to use SMTP
    $phpmailer->isSMTP();

    // Set SMTP server details
    $phpmailer->Host       = $options['smtp_host'];
    $phpmailer->Port       = (int) $options['smtp_port'];

    // Set encryption type (tls, ssl, or none)
    $encryption = isset( $options['smtp_encryption'] ) ? strtolower( $options['smtp_encryption'] ) : '';
    if ( in_array( $encryption, [ 'ssl', 'tls' ] ) ) {
        $phpmailer->SMTPSecure = $encryption;
    } else {
        $phpmailer->SMTPSecure = ''; // Explicitly set to none if not ssl/tls
    }

    // Set authentication details if enabled
    $phpmailer->SMTPAuth = ! empty( $options['smtp_auth'] ) && $options['smtp_auth'];
    if ( $phpmailer->SMTPAuth ) {
        if ( empty( $options['smtp_username'] ) || empty( $options['smtp_password'] ) ) {
            error_log('Quiztech SMTP Error: Auth enabled but Username or Password missing.');
            // Decide if we should prevent sending or let PHPMailer handle the error
            // For now, we proceed and let PHPMailer fail if credentials are bad
        }
        $phpmailer->Username = isset( $options['smtp_username'] ) ? $options['smtp_username'] : '';
        $phpmailer->Password = isset( $options['smtp_password'] ) ? $options['smtp_password'] : '';
    }

    // Set From address (optional, but recommended)
    $from_address = isset( $options['smtp_from_address'] ) ? $options['smtp_from_address'] : '';
    $from_name    = isset( $options['smtp_from_name'] ) ? $options['smtp_from_name'] : get_bloginfo( 'name' );

    if ( ! empty( $from_address ) && is_email( $from_address ) ) {
        try {
            $phpmailer->setFrom( $from_address, $from_name );
        } catch ( \PHPMailer\PHPMailer\Exception $e ) {
            error_log( 'Quiztech SMTP Error setting From address: ' . $e->getMessage() );
            // Continue without setting From if it fails
        }
    }

    // Optional: Add debugging
    // $phpmailer->SMTPDebug = 2; // Enable verbose debug output (use 0 in production)
    // $phpmailer->Debugoutput = 'error_log'; // Log debug output to PHP error log
}
add_action( 'phpmailer_init', 'quiztech_configure_smtp' );