<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'AIEO_Runtime_Marketing_Optin', false ) ) {

	class AIEO_Runtime_Marketing_Optin {

		const OPTION_KEY = 'aieo_dmm_marketing_optin';
		const FIELD_ID   = 'aieo/marketing-optin';
		const META_KEY   = '_wc_other/aieo/marketing-optin';
		const DONE_META  = '_aieo_marketing_optin_done';

		
		private static $instance = null;

		public static function instance() {
			if ( null === self::$instance ) {
				self::$instance = new self();
			}
			return self::$instance;
		}

		private function __construct() {
			$s = $this->get_settings();
			if ( 'yes' !== $s['enabled'] ) {
				return; 
			}
			
			
			
			
			if ( did_action( 'woocommerce_init' ) && function_exists( 'woocommerce_register_additional_checkout_field' ) ) {
				$this->register_field( $s );
			} elseif ( ! did_action( 'woocommerce_init' ) ) {
				add_action( 'woocommerce_init', function () use ( $s ) {
					$this->register_field( $s );
				}, 20 );
			} else {
				add_action( 'woocommerce_blocks_loaded', function () use ( $s ) {
					$this->register_field( $s );
				} );
			}
			
			
			if ( 'yes' === $s['default_checked'] ) {
				add_filter( 'woocommerce_get_default_value_for_' . self::FIELD_ID, array( $this, 'default_checked_value' ), 10, 3 );
			}
			
			
			add_action( 'woocommerce_store_api_checkout_order_processed', array( $this, 'apply_from_order' ), 20, 1 );
		}

		private function register_field( $s ) {
			try {
				woocommerce_register_additional_checkout_field( array(
					'id'       => self::FIELD_ID,
					
					
					
					'label'    => (string) $s['text'],
					'location' => 'order',
					'type'     => 'checkbox',
					'required' => false,
				) );
			} catch ( \Throwable $e ) {
				
				
				unset( $e );
			}
		}

		
		public function default_checked_value( $value, $group, $wc_object ) {
			if ( ! is_user_logged_in() ) {
				return '1'; 
			}
			$u     = wp_get_current_user();
			$email = (string) ( $u->user_email ?? '' );
			if ( '' !== $email && class_exists( 'AIEO_Contact_Consent' )
				&& ! AIEO_Contact_Consent::is_opted_in( $email ) ) {
				return $value; 
			}
			return '1'; 
		}

		
		public function apply_from_order( $order ) {
			if ( ! is_a( $order, 'WC_Order' ) ) {
				return;
			}
			if ( '1' !== (string) $order->get_meta( self::META_KEY ) ) {
				return; 
			}
			if ( 'done' === (string) $order->get_meta( self::DONE_META ) ) {
				return; 
			}
			$email = (string) $order->get_billing_email();
			if ( '' === $email ) {
				return;
			}
			if ( class_exists( 'AIEO_Contact_Consent' ) ) {
				
				AIEO_Contact_Consent::set_email_marketing( $email, true, 'checkout' );
			}
			
			
			
			
			
			
			$s = $this->get_settings();
			if ( 'yes' === $s['subscribe_newsletter']
				&& class_exists( 'AIEO_Newsletter_Manager' ) && AIEO_Newsletter_Manager::available()
				&& ! AIEO_Newsletter_Manager::exists( $email ) ) {
				$lists = array_map( 'strval', (array) $s['newsletter_lists'] );
				AIEO_Newsletter_Manager::save( $email, true, $lists, array(
					'first' => (string) $order->get_billing_first_name(),
					'last'  => (string) $order->get_billing_last_name(),
				) );
			}
			$order->update_meta_data( self::DONE_META, 'done' );
			$order->save();
		}

		private function get_settings() {
			$stored = get_option( self::OPTION_KEY, array() );
			if ( ! is_array( $stored ) ) {
				$stored = array();
			}
			return self::fill_i18n_defaults( array_merge( array(
				'enabled'         => 'no',
				'default_checked' => 'no',
				'subscribe_newsletter' => 'no',
				'newsletter_lists'     => array(),
				
				'text'            => '',
			), $stored ) );
		}

		
		private static function fill_i18n_defaults( array $s ) {
			if ( ! did_action( 'init' ) ) { return $s; }
			$i18n = array(
				'text' => __( 'I want to receive updates about new products and offers!', 'ai-eshop-optimizer' ),
			);
			foreach ( $i18n as $k => $v ) {
				if ( ! isset( $s[ $k ] ) || '' === trim( (string) $s[ $k ] ) ) { $s[ $k ] = $v; }
			}
			return $s;
		}
	}
}