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wp-content/plugins/jetpack/extensions/blocks/mailchimp/mailchimp.php

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+<?php
+/**
+ * Mailchimp Block.
+ *
+ * @since 7.1.0
+ *
+ * @package automattic/jetpack
+ */
+
+namespace Automattic\Jetpack\Extensions\Mailchimp;
+
+use Automattic\Jetpack\Assets;
+use Automattic\Jetpack\Blocks;
+use Automattic\Jetpack\Connection\Client;
+use Automattic\Jetpack\Connection\Manager as Connection_Manager;
+use Automattic\Jetpack\External_Connections;
+use Automattic\Jetpack\Status\Host;
+use Jetpack;
+use Jetpack_Gutenberg;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
+/**
+ * Registers the block for use in Gutenberg
+ * This is done via an action so that we can disable
+ * registration if we need to.
+ */
+function register_block() {
+	if (
+		( defined( 'IS_WPCOM' ) && IS_WPCOM )
+		|| Jetpack::is_connection_ready()
+	) {
+		Blocks::jetpack_register_block(
+			__DIR__,
+			array(
+				'render_callback' => __NAMESPACE__ . '\load_assets',
+			)
+		);
+
+		register_admin_settings();
+	}
+}
+add_action( 'init', __NAMESPACE__ . '\register_block' );
+
+/**
+ * Mailchimp block registration/dependency declaration.
+ *
+ * The render implementation lives in render.php and is only loaded when the
+ * block is actually rendered, keeping it out of the eager front-end path.
+ *
+ * @param array  $attr - Array containing the Mailchimp block attributes.
+ * @param string $content - Mailchimp block content.
+ *
+ * @return string
+ */
+function load_assets( $attr, $content ) {
+	require_once __DIR__ . '/render.php';
+	return load_assets_implementation( $attr, $content );
+}
+
+/**
+ * Registers the settings to manage the Mailchimp connection.
+ */
+function register_admin_settings() {
+	Assets::register_script(
+		'jetpack-mailchimp-admin-extra-settings',
+		Jetpack_Gutenberg::get_blocks_directory() . '/mailchimp/admin.js',
+		JETPACK__PLUGIN_FILE,
+		array(
+			'textdomain' => 'jetpack',
+		)
+	);
+
+	External_Connections::add_settings_for_service(
+		'writing',
+		array(
+			'service'      => 'mailchimp',
+			'title'        => __( 'Mailchimp', 'jetpack' ),
+			'signup_link'  => 'https://public-api.wordpress.com/rest/v1.1/sharing/mailchimp/signup',
+			'description'  => __( 'Allow users to sign up to your Mailchimp mailing list.', 'jetpack' ),
+			'script'       => 'jetpack-mailchimp-admin-extra-settings',
+			'support_link' => array(
+				'wpcom'   => 'https://wordpress.com/support/wordpress-editor/blocks/mailchimp-block/',
+				'jetpack' => 'mailchimp-block',
+			),
+		)
+	);
+
+	add_action( 'load-options.php', __NAMESPACE__ . '\update_settings' );
+}
+
+/**
+ * Update the site options that are related to Mailchimp.
+ */
+function update_settings() {
+	$action      = ! empty( $_REQUEST['action'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['action'] ) ) : '';
+	$option_page = ! empty( $_REQUEST['option_page'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['option_page'] ) ) : '';
+	$audience    = ! empty( $_REQUEST['jetpack-mailchimp-audience'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['jetpack-mailchimp-audience'] ) ) : '';
+	if ( $action !== 'update' || $option_page !== 'writing' || ! current_user_can( 'manage_options' ) || $audience === '' ) {
+		return;
+	}
+
+	check_admin_referer( 'writing-options' );
+
+	$site_id = Connection_Manager::get_site_id();
+	if ( is_wp_error( $site_id ) ) {
+		return;
+	}
+
+	if ( $audience === 'none' ) {
+		$data = array(
+			'follower_list_id' => '0',
+			'keyring_id'       => '0',
+		);
+	} else {
+		$connection = External_Connections::get_connection( 'mailchimp' );
+		if ( empty( $connection ) ) {
+			return;
+		}
+		$data = array(
+			'follower_list_id' => $audience,
+			'keyring_id'       => $connection['ID'],
+		);
+	}
+
+	if ( ( new Host() )->is_wpcom_simple() ) {
+		require_lib( 'mailchimp' );
+		$response = \MailchimpApi::save_settings( $site_id, $data );
+	} else {
+		$response = Client::wpcom_json_api_request_as_user(
+			sprintf( '/sites/%d/mailchimp/settings', $site_id ),
+			'1.1',
+			array( 'method' => 'POST' ),
+			$data,
+			'rest'
+		);
+	}
+	if ( is_wp_error( $response ) ) {
+		add_settings_error( 'general', 'settings_updated', __( 'Settings save failed.', 'jetpack' ), 'error' );
+	}
+}