<?php

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defined('ABSPATH') || exit;

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class Builder_Optin_Service_MailerLite extends Builder_Optin_Service {

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public static function get_id():string {

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return 'mailerlite';

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}

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public static function get_label():string {

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return __('MailerLite', 'themify');

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}

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public static function get_settings():array {

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$lists = self::get_lists();

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if (is_array($lists)) {

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return array(

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array(

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'id' => 'ml_form',

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'type' => 'select',

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'label' => __('Groups', 'themify'),

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'options' => $lists,

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),

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);

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} else {

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return array(

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array(

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'type' => 'message',

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'class' => 'tb_field_error_msg',

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'comment' => $lists

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)

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);

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}

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}

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public function get_options():array {//backward for fw 7.5

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return self::get_settings();

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}

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public static function get_global_options():array {

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return array(

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array(

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'id' => 'mailerlite_version',

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'type' => 'select',

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'label' => __('Version', 'themify'),

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'options' => [

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'' => __( 'Classic', 'themify' ), /* v1 or v2 */

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'new' => __( 'New', 'themify' ),

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],

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'description' => sprintf(__('Accounts created before March 22nd, 2022 use MailerLite Classic. Accounts created after March 22nd, 2022 use the new MailerLite. <a href="%s" target="_blank">Which version of MailerLite am I using?</a>', 'themify'), 'https://www.mailerlite.com/help/which-version-of-mailerlite-am-i-using'),

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'bind' => [

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'' => [ 'show' => 'mailerlite_key', 'hide' => 'mailerlite_key_new' ],

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'new' => [ 'show' => 'mailerlite_key_new', 'hide' => 'mailerlite_key' ],

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]

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),

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array(

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'id' => 'mailerlite_key',

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'type' => 'text',

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'label' => __('MailerLite Classic API Key', 'themify'),

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'description' => sprintf(__('<a href="%s" target="_blank">Get an API key</a>', 'themify'), 'https://app.mailerlite.com/integrations/api/'),

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'wrap_attr' => [

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'data-show-if-element' => '[name=setting-mailerlite_version]',

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'data-show-if-value' => ''

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],

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'wrap_class' => 'mailerlite_key'

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),

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array(

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'id' => 'mailerlite_key_new',

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'type' => 'textarea',

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'label' => __('MailerLite New API Key', 'themify'),

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'description' => sprintf(__('<a href="%s" target="_blank">Get an API key</a>', 'themify'), 'https://www.mailerlite.com/help/where-to-find-the-mailerlite-api-key-groupid-and-documentation#new'),

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'wrap_attr' => [

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'data-show-if-element' => '[name=setting-mailerlite_version]',

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'data-show-if-value' => 'new'

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],

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'wrap_class' => 'mailerlite_key_new'

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),

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);

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}

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private static function request($request = 'groups', $method = 'GET', $args = array()) {

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$args += array(

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'method' => $method,

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'headers' => array(

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'Content-Type' => 'application/json',

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),

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);

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if ( self::is_classic() ) {

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$args['headers']['X-MailerLite-ApiKey'] = self::get_api_key();

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$url = 'https://api.mailerlite.com/api/v2/' . $request;

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} else {

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$args['user-agent'] = null;

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$args['headers']['Authorization'] = 'Bearer ' . self::get_api_key();

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$url = 'https://connect.mailerlite.com/api/' . $request;

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}

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$results = wp_remote_request($url, $args);

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if (!is_wp_error($results)) {

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$response = json_decode(wp_remote_retrieve_body($results), true);

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if (empty($response)) {

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return new WP_Error('empty_response', __('Empty response.', 'themify'));

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}

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if (isset($response['error'])) {

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return new WP_Error('error-' . $response['error']['code'], $response['error']['message']);

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}

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// all good!

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return $response;

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} else {

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return $results;

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}

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}

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protected static function request_list() {

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if (is_wp_error(( $data = self::request('groups')))) {

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return $data;

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}

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if (!empty($data) && is_array($data)) {

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if ( ! self::is_classic() && isset( $data['data'] ) ) {

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/* handle /groups request in new mailerlite */

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$data = $data['data'];

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}

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$lists = array();

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foreach ($data as $v) {

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$lists[$v['id']] = $v['name'];

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}

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return $lists;

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}

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return new WP_Error('list_error', __('Error retrieving forms.', 'themify'));

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}

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/**

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* Gets data from module and validates API key

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*/

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public static function validate_data(array $fields_args):string {

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return isset($fields_args['ml_form']) ? '' : __('No campaign is selected.', 'themify');

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}

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/**

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*

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* @doc https://developers.mailerlite.com/reference#add-single-subscriber

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*/

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public static function subscribe(array $args) {

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$fields = array(

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'email' => $args['email'],

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'fields' => [

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'name' => $args['fname'],

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'last_name' => $args['lname'],

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]

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);

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if ( self::is_classic() ) {

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return self::request(sprintf('groups/%s/subscribers', $args['ml_form']), 'POST', array(

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'body' => json_encode( $fields ),

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));

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} else {

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$fields['groups'] = [ $args['ml_form'] ];

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return self::request( 'subscribers', 'POST', array(

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'body' => json_encode( $fields ),

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));

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}

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}

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/**

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* True: using MailerLite V1 or V2. False: using the New MailerLite

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*/

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private static function is_classic() : bool {

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return empty( self::get( 'mailerlite_version' ) );

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}

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protected static function get_api_key() :? string {

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$option_key = static::get_id() . '_key';

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if ( ! self::is_classic() ) {

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$option_key .= '_new';

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}

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return static::get( $option_key );

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}

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}

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