<?php
/**
 * Hooks into wp_mail/PHPMailer to route outgoing mail through the active module.
 *
 * @package NoorSMTP
 */

namespace NoorWork\NoorSMTP;

use NoorWork\NoorSMTP\Modules\ModuleManager;
use NoorWork\NoorSMTP\Log\LogRepository;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class Mailer
 */
class Mailer {

	/**
	 * Module manager.
	 *
	 * @var ModuleManager
	 */
	private $modules;

	/**
	 * Log repository.
	 *
	 * @var LogRepository
	 */
	private $logs;

	/**
	 * Constructor.
	 *
	 * @param ModuleManager $modules Module manager.
	 * @param LogRepository $logs    Log repository.
	 */
	public function __construct( ModuleManager $modules, LogRepository $logs ) {
		$this->modules = $modules;
		$this->logs    = $logs;
	}

	/**
	 * Register hooks.
	 *
	 * @return void
	 */
	public function register() {
		add_action( 'phpmailer_init', array( $this, 'configure_phpmailer' ) );
		add_action( 'wp_mail_succeeded', array( $this, 'log_success' ) );
		add_action( 'wp_mail_failed', array( $this, 'log_failure' ) );
		add_action( 'noorsmtp_prune_logs', array( $this, 'prune_logs' ) );
	}

	/**
	 * Configure PHPMailer using the active module's settings.
	 *
	 * @param \PHPMailer\PHPMailer\PHPMailer $phpmailer PHPMailer instance.
	 * @return void
	 */
	public function configure_phpmailer( $phpmailer ) {
		$slug     = $this->modules->active_mailer_slug();
		$settings = get_option( 'noorsmtp_settings', array() );

		$from_email = ! empty( $settings['from_email'] ) ? sanitize_email( $settings['from_email'] ) : get_option( 'admin_email' );
		$from_name  = ! empty( $settings['from_name'] ) ? sanitize_text_field( $settings['from_name'] ) : get_bloginfo( 'name' );

		// Enforce or default From header
		if ( ! empty( $settings['force_from'] ) || empty( $phpmailer->From ) || 'wordpress@' === substr( (string) $phpmailer->From, 0, 10 ) ) {
			if ( ! empty( $from_email ) ) {
				$phpmailer->setFrom( $from_email, $from_name, false );
			}
		}

		// Ensure envelope Sender (Return-Path) is set so mail servers don't drop unauthenticated envelope headers
		if ( ! empty( $from_email ) && empty( $phpmailer->Sender ) ) {
			$phpmailer->Sender = $from_email;
		}

		if ( empty( $slug ) || 'default' === $slug || 'mail' === $slug ) {
			$phpmailer->isMail();
			return;
		}

		$module = $this->modules->get( $slug );

		if ( ! $module ) {
			// Fallback to PHP mail() if the configured mailer is unavailable or deactivated.
			$phpmailer->isMail();
			return;
		}

		$module->configure_phpmailer( $phpmailer, $settings );
	}

	/**
	 * Log a successful send.
	 *
	 * `wp_mail_succeeded` fires with a plain array from WordPress core
	 * (the internal $mail_data array: to/subject/message/headers/attachments)
	 * but some provider modules in this plugin fire it with a stdClass for
	 * convenience — accept either shape.
	 *
	 * @param array|object $mail_data Result data from wp_mail_succeeded.
	 * @return void
	 */
	public function log_success( $mail_data ) {
		$to_raw  = is_array( $mail_data ) ? ( isset( $mail_data['to'] ) ? $mail_data['to'] : '' ) : ( isset( $mail_data->to ) ? $mail_data->to : '' );
		$subject = is_array( $mail_data ) ? ( isset( $mail_data['subject'] ) ? $mail_data['subject'] : '' ) : ( isset( $mail_data->subject ) ? $mail_data->subject : '' );
		$to      = is_array( $to_raw ) ? implode( ', ', $to_raw ) : (string) $to_raw;

		$this->logs->insert(
			array(
				'to_address' => $to,
				'subject'    => $subject,
				'mailer'     => $this->modules->active_mailer_slug(),
				'status'     => 'sent',
			)
		);
	}

	/**
	 * Log a failed send.
	 *
	 * @param \WP_Error $error Error object from wp_mail_failed.
	 * @return void
	 */
	public function log_failure( $error ) {
		$data    = $error->get_error_data();
		$to      = isset( $data['to'] ) ? ( is_array( $data['to'] ) ? implode( ', ', $data['to'] ) : $data['to'] ) : '';
		$subject = isset( $data['subject'] ) ? $data['subject'] : '';

		$this->logs->insert(
			array(
				'to_address'    => $to,
				'subject'       => $subject,
				'mailer'        => $this->modules->active_mailer_slug(),
				'status'        => 'failed',
				'error_message' => $error->get_error_message(),
			)
		);
	}

	/**
	 * Prune old log entries (cron callback).
	 *
	 * @return void
	 */
	public function prune_logs() {
		$this->logs->prune( 30 );
	}
}