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<?php /** * Wrapper for ConvertKit's API. * * @since 1.1.0 * * @package ET\Core\API\Email */ class ET_Core_API_Email_ConvertKit extends ET_Core_API_Email_Provider { /** * @inheritDoc */ public $BASE_URL = 'https://api.convertkit.com/v3'; /** * @inheritDoc */ public $custom_fields_scope = 'account'; /** * @inheritDoc */ public $name = 'ConvertKit'; /** * @inheritDoc */ public $name_field_only = true; /** * @inheritDoc */ public $slug = 'convertkit'; /** * @inheritDoc */ public $uses_oauth = false; /** * ET_Core_API_Email_ConvertKit constructor. * * @inheritDoc */ public function __construct( $owner, $account_name = '', $api_key = '' ) { parent::__construct( $owner, $account_name, $api_key ); // ConvertKit doesn't have "lists". They have "forms" so we use "forms" as if they were "lists". $this->LISTS_URL = "{$this->BASE_URL}/forms"; } protected function _fetch_custom_fields( $list_id = '', $list = array() ) { $this->response_data_key = 'custom_fields'; $this->prepare_request( $this->_generate_url_for_request( "{$this->BASE_URL}/custom_fields" ) ); return parent::_fetch_custom_fields( $list_id, $list ); } /** * Generates the URL for adding subscribers. * * @param $list_id * * @since 1.1.0 * * @return string */ protected function _get_subscribe_url( $list_id ) { return "{$this->LISTS_URL}/{$list_id}/subscribe"; } protected function _get_subscriber_counts( $forms ) { $result = array(); foreach ( (array) $forms as $form_info ) { $url = $this->_generate_url_for_request( "{$this->LISTS_URL}/{$form_info['id']}/subscriptions", true ); $this->prepare_request( $url ); $this->make_remote_request(); if ( $this->response->ERROR || ! isset( $this->response->DATA['total_subscriptions'] ) ) { continue; } $form_info['total_subscriptions'] = $this->response->DATA['total_subscriptions']; $result[] = $form_info; } return $result; } /** * Adds default args for all API requests to given url. * * @since 1.1.0 * * @param string $url * @param bool $with_secret * * @return string */ protected function _generate_url_for_request( $url, $with_secret = false ) { $key = $with_secret ? $this->data['api_secret'] : $this->data['api_key']; $key_type = $with_secret ? 'api_secret' : 'api_key'; return esc_url_raw( add_query_arg( $key_type, $key, $url ) ); } protected function _process_custom_fields( $args ) { if ( ! isset( $args['custom_fields'] ) ) { return $args; } $fields = $args['custom_fields']; unset( $args['custom_fields'] ); foreach ( $fields as $field_id => $value ) { if ( is_array( $value ) && $value ) { // This is a multiple choice field (eg. checkbox, radio, select) $value = array_values( $value ); if ( count( $value ) > 1 ) { $value = implode( ',', $value ); } else { $value = array_pop( $value ); } } self::$_->array_set( $args, "fields.{$field_id}", $value ); } return $args; } /** * @inheritDoc */ public function get_account_fields() { return array( 'api_key' => array( 'label' => esc_html__( 'API Key', 'et_core' ), ), 'api_secret' => array( 'label' => esc_html__( 'API Secret', 'et_core' ), ), ); } /** * @inheritDoc */ public function get_data_keymap( $keymap = array() ) { $keymap = array( 'list' => array( 'list_id' => 'id', 'name' => 'name', 'subscribers_count' => 'total_subscriptions', ), 'subscriber' => array( 'email' => 'email', 'name' => 'first_name', 'custom_fields' => 'custom_fields', ), 'error' => array( 'error_message' => 'message', ), 'custom_field' => array( 'field_id' => 'key', 'name' => 'label', ), ); return parent::get_data_keymap( $keymap ); } /** * @inheritDoc */ public function fetch_subscriber_lists() { if ( empty( $this->data['api_key'] ) ) { return $this->API_KEY_REQUIRED; } $url = $this->_generate_url_for_request( $this->LISTS_URL ); $result = 'success'; $this->response_data_key = ''; $this->prepare_request( $url ); parent::fetch_subscriber_lists(); if ( ! $this->response->ERROR && ! empty( $this->response->DATA['forms'] ) ) { $with_subscriber_counts = $this->_get_subscriber_counts( $this->response->DATA['forms'] ); $this->data['lists'] = $this->_process_subscriber_lists( $with_subscriber_counts ); $this->data['is_authorized'] = 'true'; $this->data['custom_fields'] = $this->_fetch_custom_fields( '', array_shift( $this->response->DATA['forms'] ) ); $this->save_data(); } else if ( $this->response->ERROR ) { $result = $this->get_error_message(); } return $result; } /** * @inheritDoc */ public function subscribe( $args, $url = '' ) { $url = $this->_generate_url_for_request( $this->_get_subscribe_url( $args['list_id'] ) ); $params = $this->transform_data_to_provider_format( $args, 'subscriber' ); $params = $this->_process_custom_fields( $params ); $params['fields']['notes'] = $this->SUBSCRIBED_VIA; $this->prepare_request( $url, 'POST', false, $params ); return parent::subscribe( $params, $url ); } }