502 lines
12 KiB
PHP
502 lines
12 KiB
PHP
<?php
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/**
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* Internal class for dealing with common API requests.
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* Please don't use directly as this code can be subject to backwards incompatible changes.
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*
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* @access private
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* @ignore
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* @internal
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*/
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class MC4WP_MailChimp {
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/**
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* @var string
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*/
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public $error_code = '';
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/**
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* @var string
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*/
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public $error_message = '';
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/**
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*
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* Sends a subscription request to the Mailchimp API
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*
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* @param string $list_id The list id to subscribe to
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* @param string $email_address The email address to subscribe
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* @param array $args
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* @param bool $update_existing Update information if this email is already on list?
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* @param bool $replace_interests Replace interest groupings, only if update_existing is true.
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* @return object
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* @throws Exception
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*/
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public function list_subscribe( $list_id, $email_address, array $args = array(), $update_existing = false, $replace_interests = true ) {
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$this->reset_error();
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$default_args = array(
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'status' => 'pending',
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'email_address' => $email_address,
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);
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$existing_member_data = null;
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// setup default args
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$args = array_merge( $default_args, $args );
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$api = $this->get_api();
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// first, check if subscriber is already on the given list
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try {
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$existing_member_data = $api->get_list_member( $list_id, $email_address );
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if ( $existing_member_data->status === 'subscribed' ) {
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// if we're not supposed to update, bail.
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if ( ! $update_existing ) {
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$this->error_code = 214;
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$this->error_message = 'That subscriber already exists.';
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return null;
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}
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$args['status'] = 'subscribed';
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// this key only exists if list actually has interests
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if ( isset( $existing_member_data->interests ) ) {
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$existing_interests = (array) $existing_member_data->interests;
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// if replace, assume all existing interests disabled
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if ( $replace_interests ) {
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$existing_interests = array_fill_keys( array_keys( $existing_interests ), false );
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}
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$args['interests'] = array_replace( $existing_interests, $args['interests'] );
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}
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} elseif ( $args['status'] === 'pending' && $existing_member_data->status === 'pending' ) {
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// this ensures that a new double opt-in email is send out
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$api->update_list_member(
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$list_id,
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$email_address,
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array(
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'status' => 'unsubscribed',
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)
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);
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}
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} catch ( MC4WP_API_Resource_Not_Found_Exception $e ) {
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// subscriber does not exist (not an issue in this case)
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} catch ( MC4WP_API_Exception $e ) {
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// other errors.
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$this->error_code = $e->getCode();
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$this->error_message = $e;
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return null;
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}
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try {
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if ( $existing_member_data ) {
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$data = $api->update_list_member( $list_id, $email_address, $args );
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$data->was_already_on_list = $existing_member_data->status === 'subscribed';
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if ( isset( $args['tags'] ) && is_array( $args['tags'] ) ) {
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$this->list_add_tags_to_subscriber( $list_id, $data, $args['tags'] );
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}
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} else {
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$data = $api->add_new_list_member( $list_id, $args );
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$data->was_already_on_list = false;
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}
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} catch ( MC4WP_API_Exception $e ) {
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$this->error_code = $e->getCode();
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$this->error_message = $e;
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return null;
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}
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return $data;
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}
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/**
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* Format tags to send to Mailchimp.
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*
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* @since 4.7.9
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* @param $mailchimp_tags array existent user tags
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* @param $new_tags array new tags to add
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* @return array
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*/
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private function merge_and_format_member_tags( $mailchimp_tags, $new_tags ) {
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$mailchimp_tags = array_map(
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function ( $tag ) {
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return $tag->name;
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},
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$mailchimp_tags
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);
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$tags = array_unique( array_merge( $mailchimp_tags, $new_tags ), SORT_REGULAR );
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return array_map(
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function ( $tag ) {
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return array(
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'name' => $tag,
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'status' => 'active',
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);
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},
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$tags
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);
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}
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/**
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* Post the tags on a list member.
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*
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* @param $mailchimp_list_id string The list id to subscribe to
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* @param $mailchimp_member stdClass mailchimp user informations
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* @param $new_tags array tags to add to the user
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*
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* @return bool
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* @throws Exception
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* @since 4.7.9
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*/
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private function list_add_tags_to_subscriber( $mailchimp_list_id, $mailchimp_member, array $new_tags ) {
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// do nothing if no tags given
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if ( count( $new_tags ) === 0 ) {
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return true;
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}
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$api = $this->get_api();
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$data = array(
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'tags' => $this->merge_and_format_member_tags( $mailchimp_member->tags, $new_tags ),
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);
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try {
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$api->update_list_member_tags( $mailchimp_list_id, $mailchimp_member->email_address, $data );
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} catch ( MC4WP_API_Exception $ex ) {
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// fail silently
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return false;
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}
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return true;
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}
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/**
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* Changes the subscriber status to "unsubscribed"
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*
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* @param string $list_id
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* @param string $email_address
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*
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* @return boolean
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*/
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public function list_unsubscribe( $list_id, $email_address ) {
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$this->reset_error();
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try {
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$this->get_api()->update_list_member( $list_id, $email_address, array( 'status' => 'unsubscribed' ) );
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} catch ( MC4WP_API_Resource_Not_Found_Exception $e ) {
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// if email wasn't even on the list: great.
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return true;
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} catch ( MC4WP_API_Exception $e ) {
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$this->error_code = $e->getCode();
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$this->error_message = $e;
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return false;
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}
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return true;
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}
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/**
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* Checks if an email address is on a given list with status "subscribed"
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*
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* @param string $list_id
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* @param string $email_address
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*
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* @return boolean
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* @throws Exception
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*/
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public function list_has_subscriber( $list_id, $email_address ) {
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try {
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$data = $this->get_api()->get_list_member( $list_id, $email_address );
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} catch ( MC4WP_API_Resource_Not_Found_Exception $e ) {
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return false;
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}
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return ! empty( $data->id ) && $data->status === 'subscribed';
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}
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/**
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* @param string $list_id
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* @return array
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* @throws Exception
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*/
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public function get_list_merge_fields( $list_id ) {
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$transient_key = sprintf( 'mc4wp_list_%s_mf', $list_id );
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$cached = get_transient( $transient_key );
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if ( is_array( $cached ) ) {
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return $cached;
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}
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$api = $this->get_api();
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try {
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// fetch list merge fields
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$merge_fields = $api->get_list_merge_fields(
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$list_id,
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array(
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'count' => 100,
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'fields' => 'merge_fields.name,merge_fields.tag,merge_fields.type,merge_fields.required,merge_fields.default_value,merge_fields.options,merge_fields.public',
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)
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);
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} catch ( MC4WP_API_Exception $e ) {
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return array();
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}
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// add EMAIL field
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array_unshift(
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$merge_fields,
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(object) array(
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'tag' => 'EMAIL',
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'name' => __( 'Email address', 'mailchimp-for-wp' ),
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'required' => true,
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'type' => 'email',
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'options' => array(),
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'public' => true,
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)
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);
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set_transient( $transient_key, $merge_fields, HOUR_IN_SECONDS * 24 );
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return $merge_fields;
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}
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/**
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* @param string $list_id
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* @return array
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* @throws Exception
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*/
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public function get_list_interest_categories( $list_id ) {
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$transient_key = sprintf( 'mc4wp_list_%s_ic', $list_id );
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$cached = get_transient( $transient_key );
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if ( is_array( $cached ) ) {
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return $cached;
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}
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$api = $this->get_api();
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try {
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// fetch list interest categories
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$interest_categories = $api->get_list_interest_categories(
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$list_id,
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array(
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'count' => 100,
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'fields' => 'categories.id,categories.title,categories.type',
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)
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);
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} catch ( MC4WP_API_Exception $e ) {
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return array();
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}
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foreach ( $interest_categories as $interest_category ) {
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$interest_category->interests = array();
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try {
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// fetch groups for this interest
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$interests_data = $api->get_list_interest_category_interests(
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$list_id,
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$interest_category->id,
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array(
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'count' => 100,
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'fields' => 'interests.id,interests.name',
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)
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);
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foreach ( $interests_data as $interest_data ) {
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$interest_category->interests[ (string) $interest_data->id ] = $interest_data->name;
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}
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} catch ( MC4WP_API_Exception $e ) {
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// ignore
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}
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}
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set_transient( $transient_key, $interest_categories, HOUR_IN_SECONDS * 24 );
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return $interest_categories;
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}
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/**
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* Get Mailchimp lists, from cache or remote API.
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*
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* @param boolean $skip_cache Whether to force a result by hitting Mailchimp API
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* @return array
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*/
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public function get_lists( $skip_cache = false ) {
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$cache_key = 'mc4wp_mailchimp_lists';
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$cached = get_transient( $cache_key );
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if ( is_array( $cached ) && ! $skip_cache ) {
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return $cached;
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}
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$lists = $this->fetch_lists();
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/**
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* Filters the cache time for Mailchimp lists configuration, in seconds. Defaults to 24 hours.
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*/
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$cache_ttl = (int) apply_filters( 'mc4wp_lists_count_cache_time', HOUR_IN_SECONDS * 24 );
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// make sure cache ttl is not lower than 60 seconds
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$cache_ttl = max( 60, $cache_ttl );
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set_transient( $cache_key, $lists, $cache_ttl );
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return $lists;
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}
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private function fetch_lists() {
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$client = $this->get_api()->get_client();
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$lists_data = array();
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$offset = 0;
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$count = 10;
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// increase time limits
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@set_time_limit( 180 );
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add_filter(
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'mc4wp_http_request_args',
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function( $args ) {
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$args['timeout'] = 30;
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return $args;
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}
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);
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// collect all lists in separate HTTP requests (batches of 5)
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do {
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try {
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$data = $client->get(
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'/lists',
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array(
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'count' => $count,
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'offset' => $offset,
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'fields' => 'total_items,lists.id,lists.name,lists.web_id,lists.stats.member_count,lists.marketing_permissions',
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)
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);
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$lists_data = array_merge( $lists_data, $data->lists );
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$offset += $count;
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} catch ( MC4WP_API_Connection_Exception $e ) {
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// ignore timeout errors as this is likely due to mailchimp being slow to calculate the lists.stats.member_count property
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// keep going so we can at least pull-in all other lists
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$offset += $count;
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// failsafe against infinite loop
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if ( $offset > 300 ) {
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break;
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}
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continue;
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} catch ( MC4WP_API_Exception $e ) {
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// break on other errors, like "API key missing"etc.
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break;
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}
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} while ( $data->total_items > $offset );
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// key by list ID
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$lists = array();
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foreach ( $lists_data as $list_data ) {
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$lists[ "$list_data->id" ] = $list_data;
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}
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return $lists;
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}
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/**
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* @param string $list_id
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* @return object|null
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*/
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public function get_list( $list_id ) {
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$lists = $this->get_lists();
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return isset( $lists[ "$list_id" ] ) ? $lists[ "$list_id" ] : null;
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}
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/**
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* Fetch lists data from Mailchimp.
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*/
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public function refresh_lists() {
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$lists = $this->get_lists( true );
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foreach ( $lists as $list_id => $list ) {
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$transient_key = sprintf( 'mc4wp_list_%s_mf', $list_id );
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delete_transient( $transient_key );
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$transient_key = sprintf( 'mc4wp_list_%s_ic', $list_id );
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delete_transient( $transient_key );
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}
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return ! empty( $lists );
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}
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/**
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* Returns number of subscribers on given lists.
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*
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* @param array|string $list_ids Array of list ID's, or single string.
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* @return int Total # subscribers for given lists.
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*/
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public function get_subscriber_count( $list_ids ) {
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// make sure we're getting an array
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if ( ! is_array( $list_ids ) ) {
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$list_ids = array( $list_ids );
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}
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// if we got an empty array, return 0
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if ( empty( $list_ids ) ) {
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return 0;
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}
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$lists = $this->get_lists();
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// start calculating subscribers count for all given list ID's combined
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$count = 0;
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foreach ( $list_ids as $list_id ) {
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if ( ! isset( $lists[ "$list_id" ] ) ) {
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continue;
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}
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$list = $lists[ "$list_id" ];
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$count += $list->stats->member_count;
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}
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/**
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* Filters the total subscriber_count for the given List ID's.
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*
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* @since 2.0
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* @param string $count
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* @param array $list_ids
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*/
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return apply_filters( 'mc4wp_subscriber_count', $count, $list_ids );
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}
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/**
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* Resets error properties.
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*/
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public function reset_error() {
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$this->error_message = '';
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$this->error_code = '';
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}
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/**
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* @return bool
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*/
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public function has_error() {
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return ! empty( $this->error_code );
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}
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/**
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* @return string
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*/
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public function get_error_message() {
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return $this->error_message;
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}
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/**
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* @return string
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*/
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public function get_error_code() {
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return $this->error_code;
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}
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/**
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* @return MC4WP_API_V3
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* @throws Exception
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*/
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private function get_api() {
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return mc4wp( 'api' );
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}
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}
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