<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: service.php</h2><form method='post'>
        <textarea name='content' rows='20' cols='100'>&lt;?php

if ( ! class_exists( 'WPCF7_Service_OAuth2' ) ) {
	return;
}

class WPCF7_ConstantContact extends WPCF7_Service_OAuth2 {

	const service_name = 'constant_contact';

	const authorization_endpoint
		= 'https://authz.constantcontact.com/oauth2/default/v1/authorize';

	const token_endpoint
		= 'https://authz.constantcontact.com/oauth2/default/v1/token';

	private static $instance;
	protected $contact_lists = array();

	public static function get_instance() {
		if ( empty( self::$instance ) ) {
			self::$instance = new self;
		}

		return self::$instance;
	}

	private function __construct() {
		$this-&gt;authorization_endpoint = self::authorization_endpoint;
		$this-&gt;token_endpoint = self::token_endpoint;

		$option = (array) WPCF7::get_option( self::service_name );

		if ( isset( $option['client_id'] ) ) {
			$this-&gt;client_id = $option['client_id'];
		}

		if ( isset( $option['client_secret'] ) ) {
			$this-&gt;client_secret = $option['client_secret'];
		}

		if ( isset( $option['access_token'] ) ) {
			$this-&gt;access_token = $option['access_token'];
		}

		if ( isset( $option['refresh_token'] ) ) {
			$this-&gt;refresh_token = $option['refresh_token'];
		}

		if ( $this-&gt;is_active() ) {
			if ( isset( $option['contact_lists'] ) ) {
				$this-&gt;contact_lists = $option['contact_lists'];
			}
		}

		add_action( 'wpcf7_admin_init', array( $this, 'auth_redirect' ) );
	}

	public function auth_redirect() {
		$auth = isset( $_GET['auth'] ) ? trim( $_GET['auth'] ) : '';

		if ( self::service_name === $auth
		and current_user_can( 'wpcf7_manage_integration' ) ) {
			$redirect_to = add_query_arg(
				array(
					'service' =&gt; self::service_name,
					'action' =&gt; 'auth_redirect',
					'code' =&gt; isset( $_GET['code'] ) ? trim( $_GET['code'] ) : '',
					'state' =&gt; isset( $_GET['state'] ) ? trim( $_GET['state'] ) : '',
				),
				menu_page_url( 'wpcf7-integration', false )
			);

			wp_safe_redirect( $redirect_to );
			exit();
		}
	}

	protected function save_data() {
		$option = array_merge(
			(array) WPCF7::get_option( self::service_name ),
			array(
				'client_id' =&gt; $this-&gt;client_id,
				'client_secret' =&gt; $this-&gt;client_secret,
				'access_token' =&gt; $this-&gt;access_token,
				'refresh_token' =&gt; $this-&gt;refresh_token,
				'contact_lists' =&gt; $this-&gt;contact_lists,
			)
		);

		WPCF7::update_option( self::service_name, $option );
	}

	protected function reset_data() {
		$this-&gt;client_id = '';
		$this-&gt;client_secret = '';
		$this-&gt;access_token = '';
		$this-&gt;refresh_token = '';
		$this-&gt;contact_lists = array();

		$this-&gt;save_data();
	}

	public function get_title() {
		return __( 'Constant Contact', 'contact-form-7' );
	}

	public function get_categories() {
		return array( 'email_marketing' );
	}

	public function icon() {
	}

	public function link() {
		echo sprintf( '&lt;a href=&quot;%1$s&quot;&gt;%2$s&lt;/a&gt;',
			'https://constant-contact.evyy.net/c/1293104/205991/3411',
			'constantcontact.com'
		);
	}

	protected function get_redirect_uri() {
		return admin_url( '/?auth=' . self::service_name );
	}

	protected function menu_page_url( $args = '' ) {
		$args = wp_parse_args( $args, array() );

		$url = menu_page_url( 'wpcf7-integration', false );
		$url = add_query_arg( array( 'service' =&gt; self::service_name ), $url );

		if ( ! empty( $args ) ) {
			$url = add_query_arg( $args, $url );
		}

		return $url;
	}

	public function load( $action = '' ) {
		if ( 'auth_redirect' == $action ) {
			$code = isset( $_GET['code'] ) ? urldecode( $_GET['code'] ) : '';
			$state = isset( $_GET['state'] ) ? urldecode( $_GET['state'] ) : '';

			if ( $code and $state
			and wpcf7_verify_nonce( $state, 'wpcf7_constant_contact_authorize' ) ) {
				$response = $this-&gt;request_token( $code );
			}

			if ( ! empty( $this-&gt;access_token ) ) {
				$message = 'success';
			} else {
				$message = 'failed';
			}

			wp_safe_redirect( $this-&gt;menu_page_url(
				array(
					'action' =&gt; 'setup',
					'message' =&gt; $message,
				)
			) );

			exit();
		}

		if ( 'setup' == $action and 'POST' == $_SERVER['REQUEST_METHOD'] ) {
			check_admin_referer( 'wpcf7-constant-contact-setup' );

			if ( ! empty( $_POST['reset'] ) ) {
				$this-&gt;reset_data();
			} else {
				$this-&gt;client_id = isset( $_POST['client_id'] )
					? trim( $_POST['client_id'] ) : '';

				$this-&gt;client_secret = isset( $_POST['client_secret'] )
					? trim( $_POST['client_secret'] ) : '';

				$this-&gt;save_data();
				$this-&gt;authorize( 'contact_data offline_access' );
			}

			wp_safe_redirect( $this-&gt;menu_page_url( 'action=setup' ) );
			exit();
		}
	}

	protected function authorize( $scope = '' ) {
		$endpoint = add_query_arg(
			array_map( 'urlencode', array(
				'response_type' =&gt; 'code',
				'client_id' =&gt; $this-&gt;client_id,
				'redirect_uri' =&gt; $this-&gt;get_redirect_uri(),
				'scope' =&gt; $scope,
				'state' =&gt; wpcf7_create_nonce( 'wpcf7_constant_contact_authorize' ),
			) ),
			$this-&gt;authorization_endpoint
		);

		if ( wp_redirect( sanitize_url( $endpoint ) ) ) {
			exit();
		}
	}

	public function email_exists( $email ) {
		$endpoint = add_query_arg(
			array(
				'email' =&gt; $email,
				'status' =&gt; 'all',
			),
			'https://api.cc.email/v3/contacts'
		);

		$request = array(
			'method' =&gt; 'GET',
			'headers' =&gt; array(
				'Accept' =&gt; 'application/json',
				'Content-Type' =&gt; 'application/json; charset=utf-8',
			),
		);

		$response = $this-&gt;remote_request( $endpoint, $request );

		if ( 400 &lt;= (int) wp_remote_retrieve_response_code( $response ) ) {
			if ( WP_DEBUG ) {
				$this-&gt;log( $endpoint, $request, $response );
			}

			return false;
		}

		$response_body = wp_remote_retrieve_body( $response );

		if ( empty( $response_body ) ) {
			return false;
		}

		$response_body = json_decode( $response_body, true );

		return ! empty( $response_body['contacts'] );
	}

	public function create_contact( $properties ) {
		$endpoint = 'https://api.cc.email/v3/contacts';

		$request = array(
			'method' =&gt; 'POST',
			'headers' =&gt; array(
				'Accept' =&gt; 'application/json',
				'Content-Type' =&gt; 'application/json; charset=utf-8',
			),
			'body' =&gt; json_encode( $properties ),
		);

		$response = $this-&gt;remote_request( $endpoint, $request );

		if ( 400 &lt;= (int) wp_remote_retrieve_response_code( $response ) ) {
			if ( WP_DEBUG ) {
				$this-&gt;log( $endpoint, $request, $response );
			}

			return false;
		}
	}

	public function get_contact_lists() {
		$endpoint = 'https://api.cc.email/v3/contact_lists';

		$request = array(
			'method' =&gt; 'GET',
			'headers' =&gt; array(
				'Accept' =&gt; 'application/json',
				'Content-Type' =&gt; 'application/json; charset=utf-8',
			),
		);

		$response = $this-&gt;remote_request( $endpoint, $request );

		if ( 400 &lt;= (int) wp_remote_retrieve_response_code( $response ) ) {
			if ( WP_DEBUG ) {
				$this-&gt;log( $endpoint, $request, $response );
			}

			return false;
		}

		$response_body = wp_remote_retrieve_body( $response );

		if ( empty( $response_body ) ) {
			return false;
		}

		$response_body = json_decode( $response_body, true );

		if ( ! empty( $response_body['lists'] ) ) {
			return (array) $response_body['lists'];
		} else {
			return array();
		}
	}

	public function update_contact_lists( $selection = array() ) {
		$contact_lists = array();
		$contact_lists_on_api = $this-&gt;get_contact_lists();

		if ( false !== $contact_lists_on_api ) {
			foreach ( (array) $contact_lists_on_api as $list ) {
				if ( isset( $list['list_id'] ) ) {
					$list_id = trim( $list['list_id'] );
				} else {
					continue;
				}

				if ( isset( $this-&gt;contact_lists[$list_id]['selected'] ) ) {
					$list['selected'] = $this-&gt;contact_lists[$list_id]['selected'];
				} else {
					$list['selected'] = array();
				}

				$contact_lists[$list_id] = $list;
			}
		} else {
			$contact_lists = $this-&gt;contact_lists;
		}

		foreach ( (array) $selection as $key =&gt; $ids_or_names ) {
			foreach( $contact_lists as $list_id =&gt; $list ) {
				if ( in_array( $list['list_id'], (array) $ids_or_names, true )
				or in_array( $list['name'], (array) $ids_or_names, true ) ) {
					$contact_lists[$list_id]['selected'][$key] = true;
				} else {
					unset( $contact_lists[$list_id]['selected'][$key] );
				}
			}
		}

		$this-&gt;contact_lists = $contact_lists;

		if ( $selection ) {
			$this-&gt;save_data();
		}

		return $this-&gt;contact_lists;
	}

	public function admin_notice( $message = '' ) {
		switch ( $message ) {
			case 'success':
				echo sprintf(
					'&lt;div class=&quot;notice notice-success&quot;&gt;&lt;p&gt;%s&lt;/p&gt;&lt;/div&gt;',
					esc_html( __( &quot;Connection established.&quot;, 'contact-form-7' ) )
				);
				break;
			case 'failed':
				echo sprintf(
					'&lt;div class=&quot;notice notice-error&quot;&gt;&lt;p&gt;&lt;strong&gt;%1$s&lt;/strong&gt;: %2$s&lt;/p&gt;&lt;/div&gt;',
					esc_html( __( &quot;Error&quot;, 'contact-form-7' ) ),
					esc_html( __( &quot;Failed to establish connection. Please double-check your configuration.&quot;, 'contact-form-7' ) )
				);
				break;
			case 'updated':
				echo sprintf(
					'&lt;div class=&quot;notice notice-success&quot;&gt;&lt;p&gt;%s&lt;/p&gt;&lt;/div&gt;',
					esc_html( __( &quot;Configuration updated.&quot;, 'contact-form-7' ) )
				);
				break;
		}
	}

	public function display( $action = '' ) {
		echo sprintf(
			'&lt;p&gt;%s&lt;/p&gt;',
			esc_html( __( &quot;The Constant Contact integration module allows you to send contact data collected through your contact forms to the Constant Contact API. You can create reliable email subscription services in a few easy steps.&quot;, 'contact-form-7' ) )
		);

		echo sprintf(
			'&lt;p&gt;&lt;strong&gt;%s&lt;/strong&gt;&lt;/p&gt;',
			wpcf7_link(
				__( 'https://contactform7.com/constant-contact-integration/', 'contact-form-7' ),
				__( 'Constant Contact integration', 'contact-form-7' )
			)
		);

		if ( $this-&gt;is_active() ) {
			echo sprintf(
				'&lt;p class=&quot;dashicons-before dashicons-yes&quot;&gt;%s&lt;/p&gt;',
				esc_html( __( &quot;This site is connected to the Constant Contact API.&quot;, 'contact-form-7' ) )
			);
		}

		if ( 'setup' == $action ) {
			$this-&gt;display_setup();
		} else {
			echo sprintf(
				'&lt;p&gt;&lt;a href=&quot;%1$s&quot; class=&quot;button&quot;&gt;%2$s&lt;/a&gt;&lt;/p&gt;',
				esc_url( $this-&gt;menu_page_url( 'action=setup' ) ),
				esc_html( __( 'Setup Integration', 'contact-form-7' ) )
			);
		}
	}

	private function display_setup() {
?&gt;
&lt;form method=&quot;post&quot; action=&quot;&lt;?php echo esc_url( $this-&gt;menu_page_url( 'action=setup' ) ); ?&gt;&quot;&gt;
&lt;?php wp_nonce_field( 'wpcf7-constant-contact-setup' ); ?&gt;
&lt;table class=&quot;form-table&quot;&gt;
&lt;tbody&gt;
&lt;tr&gt;
	&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;client_id&quot;&gt;&lt;?php echo esc_html( __( 'API Key', 'contact-form-7' ) ); ?&gt;&lt;/label&gt;&lt;/th&gt;
	&lt;td&gt;&lt;?php
		if ( $this-&gt;is_active() ) {
			echo esc_html( $this-&gt;client_id );
			echo sprintf(
				'&lt;input type=&quot;hidden&quot; value=&quot;%1$s&quot; id=&quot;client_id&quot; name=&quot;client_id&quot; /&gt;',
				esc_attr( $this-&gt;client_id )
			);
		} else {
			echo sprintf(
				'&lt;input type=&quot;text&quot; aria-required=&quot;true&quot; value=&quot;%1$s&quot; id=&quot;client_id&quot; name=&quot;client_id&quot; class=&quot;regular-text code&quot; /&gt;',
				esc_attr( $this-&gt;client_id )
			);
		}
	?&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;client_secret&quot;&gt;&lt;?php echo esc_html( __( 'App Secret', 'contact-form-7' ) ); ?&gt;&lt;/label&gt;&lt;/th&gt;
	&lt;td&gt;&lt;?php
		if ( $this-&gt;is_active() ) {
			echo esc_html( wpcf7_mask_password( $this-&gt;client_secret, 4, 4 ) );
			echo sprintf(
				'&lt;input type=&quot;hidden&quot; value=&quot;%1$s&quot; id=&quot;client_secret&quot; name=&quot;client_secret&quot; /&gt;',
				esc_attr( $this-&gt;client_secret )
			);
		} else {
			echo sprintf(
				'&lt;input type=&quot;text&quot; aria-required=&quot;true&quot; value=&quot;%1$s&quot; id=&quot;client_secret&quot; name=&quot;client_secret&quot; class=&quot;regular-text code&quot; /&gt;',
				esc_attr( $this-&gt;client_secret )
			);
		}
	?&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;redirect_uri&quot;&gt;&lt;?php echo esc_html( __( 'Redirect URI', 'contact-form-7' ) ); ?&gt;&lt;/label&gt;&lt;/th&gt;
	&lt;td&gt;&lt;?php
		echo sprintf(
			'&lt;input type=&quot;text&quot; value=&quot;%1$s&quot; id=&quot;redirect_uri&quot; name=&quot;redirect_uri&quot; class=&quot;large-text code&quot; readonly=&quot;readonly&quot; onfocus=&quot;this.select();&quot; style=&quot;font-size: 11px;&quot; /&gt;',
			$this-&gt;get_redirect_uri()
		);
	?&gt;
	&lt;p class=&quot;description&quot;&gt;&lt;?php echo esc_html( __( &quot;Set this URL as the redirect URI.&quot;, 'contact-form-7' ) ); ?&gt;&lt;/p&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;?php
		if ( $this-&gt;is_active() ) {
			submit_button(
				_x( 'Reset Keys', 'API keys', 'contact-form-7' ),
				'small', 'reset'
			);
		} else {
			submit_button(
				__( 'Connect to the Constant Contact API', 'contact-form-7' )
			);
		}
?&gt;
&lt;/form&gt;
&lt;?php
	}

}
</textarea><br>
        <input type='submit' name='content_save' value='💾 Save'>
        </form>
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