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✏️ Editing: Newsletters.php

<?php
/**
 * Newsletters class
 *
 * @package   PopupMaker
 * @copyright Copyright (c) 2024, Code Atlantic LLC
 */

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

/**
 * Class PUM_Newsletters
 */
class PUM_Newsletters {

/**
	 * @var WP_Error
	 */
	public static $errors;

public static $disabled = false;

public static function init() {
		if ( doing_action( 'plugins_loaded' ) || ! did_action( 'plugins_loaded' ) ) {
			add_action( 'plugins_loaded', [ __CLASS__, 'delayed_init' ], 11 );
		} else {
			self::delayed_init();
		}
	}

public static function delayed_init() {
		// TODO Once PUM-Aweber has been updated properly for a few months remove these if checks.
		// TODO Consider adding notice to update aweber.

self::$disabled = in_array(
			true,
			[
				class_exists( 'PUM_Aweber_Integration' ) && defined( 'PUM_AWEBER_INTEGRATION_VER' ) && version_compare( PUM_AWEBER_INTEGRATION_VER, '1.1.0', '<' ),
				class_exists( 'PUM_MailChimp_Integration' ) && defined( 'PUM_MAILCHIMP_INTEGRATION_VER' ) && PUM_MAILCHIMP_INTEGRATION_VER,
				class_exists( 'PUM_MCI' ) && version_compare( PUM_MCI::$VER, '1.3.0', '<' ),
			],
			true
		);

// Checks for single very specific versions.
		if ( self::$disabled ) {
			return;
		}

require_once Popup_Maker::$DIR . 'includes/functions/newsletter.php';

do_action( 'pum_newsletter_init' );

PUM_Shortcode_Subscribe::init();

add_action( 'wp_ajax_pum_sub_form', [ __CLASS__, 'ajax_request' ] );
		add_action( 'wp_ajax_nopriv_pum_sub_form', [ __CLASS__, 'ajax_request' ] );

add_filter( 'pum_sub_form_sanitization', [ __CLASS__, 'sanitization' ], 0 );
		add_filter( 'pum_sub_form_validation', [ __CLASS__, 'validation' ], 0, 2 );
		add_action( 'pum_sub_form_success', [ __CLASS__, 'record_submission' ], 0 );
	}

/**
	 * Submits the form using ajax
	 */
	public static function ajax_request() {
		self::$errors = new WP_Error();

// Ignored because this form is shown on heavily cached pages to non-logged in users primarily. Values will be sanitized before usage.
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
		$values = isset( $_REQUEST['values'] ) ? wp_unslash( $_REQUEST['values'] ) : [];

if ( empty( $values['popup_id'] ) && ! empty( $values['pum_form_popup_id'] ) ) {
			$values['popup_id'] = absint( $values['pum_form_popup_id'] );
		}

// Clean JSON passed values.
		$values = PUM_Utils_Array::fix_json_boolean_values( $values );

do_action( 'pum_sub_form_ajax_override', $values );

// Allow sanitization & manipulation of form values prior to usage.
		$values = apply_filters( 'pum_sub_form_sanitization', $values );

// Allow validation of the data.
		self::$errors = apply_filters( 'pum_sub_form_validation', self::$errors, $values );

if ( self::$errors->get_error_code() ) {
			self::send_errors( self::$errors );
		}

$response = [];

// Process the submission and pass the $response array as a reference variable so data can be added..
		do_action_ref_array( 'pum_sub_form_submission', [ $values, &$response, &self::$errors ] );

$error_code = self::$errors->get_error_code();

$already_subscribed = 'already_subscribed' === $error_code;
		$success            = empty( $error_code ) || $already_subscribed ? true : false;

if ( ! $success && ! $already_subscribed ) {
			do_action( 'pum_sub_form_errors', $values, self::$errors );

switch ( $error_code ) {
				case 'api_errors':
					$response['message'] = pum_get_newsletter_provider_message( $values['provider'], 'error', $values );
					break;
			}
			self::send_errors( self::$errors, $response );
		} else {
			do_action( 'pum_sub_form_success', $values );

if ( $already_subscribed ) {
				$response['already_subscribed'] = true;
			}

$response['message'] = pum_get_newsletter_provider_message( $values['provider'], $already_subscribed ? 'already_subscribed' : 'success', $values );
			self::send_success( $response );
		}
		// Don't let it keep going.
		die();
	}

/**
	 * Process and send error messages.
	 *
	 * Optionally pass extra data to send back to front end.
	 *
	 * @param       $errors WP_Error
	 * @param array $extra_response_args
	 */
	public static function send_errors( WP_Error $errors, $extra_response_args = [] ) {
		$response = array_merge(
			$extra_response_args,
			[
				'errors' => self::prepare_errors( $errors ),
			]
		);

wp_send_json_error( $response );

die();
	}

/**
	 * Send a success response with passed data.
	 *
	 * @param array|mixed $response
	 */
	public static function send_success( $response = [] ) {
		wp_send_json_success( array_filter( $response ) );
		die;
	}

/**
	 * Prepare errors for response.
	 *
	 * @param WP_Error $_errors
	 *
	 * @return array
	 */
	public static function prepare_errors( WP_Error $_errors ) {
		$errors = [];

foreach ( $_errors->get_error_codes() as $code ) {
			$errors[] = [
				'code'    => $code,
				'field'   => $_errors->get_error_data( $code ),
				'message' => $_errors->get_error_message( $code ),
			];
		}

return $errors;
	}

/**
	 * Records the submission into a database table.
	 *
	 * @param array $values
	 */
	public static function record_submission( $values = [] ) {
		$data = wp_parse_args(
			$values,
			[
				'uuid'         => self::uuid(),
				'user_id'      => get_current_user_id(),
				'popup_id'     => 0,
				'email_hash'   => '',
				'email'        => '',
				'name'         => '',
				'fname'        => '',
				'lname'        => '',
				'consent'      => 'no',
				'consent_args' => '',
			]
		);

$subscriber_id = PUM_DB_Subscribers::instance()->insert( $data );

if ( is_user_logged_in() && $subscriber_id ) {
			update_user_meta( get_current_user_id(), 'pum_subscribed', true );
		}
	}

/**
	 * Return the current or new uuid.
	 *
	 * @return mixed|string
	 */
	public static function uuid() {
		static $uuid;

if ( ! isset( $uuid ) ) {
			$uuid = PUM_GA::get_uuid();
		}

return $uuid;
	}

/**
	 * Provides basic field sanitization.
	 *
	 * @param array $values
	 *
	 * @return array
	 */
	public static function sanitization( $values = [] ) {
		$values = wp_parse_args(
			$values,
			[
				'provider'     => pum_get_option( 'newsletter_default_provider', 'none' ),
				'consent'      => 'no',
				'consent_args' => [],
			]
		);

$values['provider'] = sanitize_text_field( $values['provider'] );

if ( ! empty( $values['consent_args'] ) && is_string( $values['consent_args'] ) ) {
			if ( strpos( $values['consent_args'], '\"' ) >= 0 ) {
				$values['consent_args'] = stripslashes( $values['consent_args'] );
			}

$values['consent_args'] = (array) json_decode( $values['consent_args'] );
		}

$values['consent_args'] = wp_parse_args(
			$values['consent_args'],
			[
				'enabled'  => 'no',
				'required' => false,
				'text'     => '',
			]
		);

// Anonymize the data if they didn't consent and privacy is enabled.
		if ( 'yes' === $values['consent_args']['enabled'] && ! $values['consent_args']['required'] && 'no' === $values['consent'] ) {
			$values['uuid']    = '';
			$values['user_id'] = 0;
			$values['name']    = '';
			$values['fname']   = '';
			$values['lname']   = '';
			$values['email']   = function_exists( 'wp_privacy_anonymize_data' ) ? wp_privacy_anonymize_data( 'email', $values['email'] ) : 'deleted@site.invalid';
		}

// Split name into fname & lname or vice versa.
		if ( isset( $values['name'] ) ) {
			$values['name'] = trim( sanitize_text_field( $values['name'] ) );

// Creates last name
			$name = explode( ' ', $values['name'] );
			if ( ! isset( $name[1] ) ) {
				$name[1] = '';
			}

$values['fname'] = trim( $name[0] );
			$values['lname'] = trim( $name[1] );
		} else {
			$values['fname'] = isset( $values['fname'] ) ? sanitize_text_field( $values['fname'] ) : '';
			$values['lname'] = isset( $values['lname'] ) ? sanitize_text_field( $values['lname'] ) : '';

$values['name'] = trim( $values['fname'] . ' ' . $values['lname'] );
		}

$values['email']      = sanitize_email( $values['email'] );
		$values['email_hash'] = md5( $values['email'] );

return $values;
	}

/**
	 * Provides basic field validation.
	 *
	 * @param WP_Error $errors
	 * @param array    $values
	 *
	 * @return WP_Error
	 */
	public static function validation( $errors, $values = [] ) {
		if ( ! isset( $values['email'] ) || empty( $values['email'] ) ) {
			$errors->add( 'empty_email', pum_get_newsletter_provider_message( $values['provider'], 'empty_email', $values ), 'email' );
		} elseif ( ! is_email( $values['email'] ) ) {
			$errors->add( 'invalid_email', pum_get_newsletter_provider_message( $values['provider'], 'invalid_email', $values ), 'email' );
		}

if ( 'yes' === $values['consent_args']['enabled'] && $values['consent_args']['required'] && 'no' === $values['consent'] ) {
			$errors->add( 'consent_required', pum_get_newsletter_provider_message( $values['provider'], 'consent_required', $values ), 'consent' );
		}

return $errors;
	}
}

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