<?php
namespace Ari_Cf7_Connector_Plugins\Mailerlite;

define( 'ARICF7CONNECTOR_MAILERLITE_SETTINGS_NAME', 'ari_cf7connector_mailerlite_settings' );
define( 'ARICF7CONNECTOR_MAILERLITE_3RDPARTY_LOADER', dirname( __FILE__ ) . '/libraries/vendor/vendor/autoload.php' );

use Ari_Cf7_Connector\Helpers\Plugin as CF7_Connector_Plugin;
use Ari_Cf7_Connector\Helpers\Cf7_Helper as Cf7_Helper;
use Ari_Cf7_Connector_Plugins\Mailerlite\Helpers\Cf7_Settings as Cf7_Settings;
use Ari_Cf7_Connector_Plugins\Mailerlite\Helpers\Settings as Settings;
use Ari_Cf7_Connector\Log\App_Log as App_Log;
use Ari_Cf7_Connector\Log\System_Log as System_Log;
use Ari\Utils\Request as Request;
use Ari\Utils\Utils as Utils;
use Ari_Cf7_Connector_Plugins\Mailerlite\Helpers\Mailerlite as MailerLite_API;
use Ari_Cf7_Connector\Helpers\Helper as CF7C_Helper;

class Plugin extends CF7_Connector_Plugin {
    protected $slug = 'mailerlite';

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

    public function save_settings() {
        $data = stripslashes_deep( Request::get_var( ARICF7CONNECTOR_MAILERLITE_SETTINGS_NAME ) );

        return Settings::instance()->save( $data );
    }

    public function on_save_cf7_form_settings( $form ) {
        $data = stripslashes_deep( Request::get_var( ARICF7CONNECTOR_MAILERLITE_SETTINGS_NAME ) );

        $cf7_settings = new Cf7_Settings( $form->id() );
        $cf7_settings->save( $data );
    }

    public function on_cf7_form_submission( $form, $submission ) {
        $settings = new Cf7_Settings( $form->id() );

        $api_key = $settings->get_option( 'apikey' );

        if ( empty( $api_key ) )
            return ;

        $submission_data = $submission->get_posted_data();
        $email = Cf7_Helper::resolve_tags( $settings->get_option( 'email' ), $submission_data );
        $name = Cf7_Helper::resolve_tags( $settings->get_option( 'name' ), $submission_data );

        $subscriptions = $settings->get_option( 'subscriptions' );
        $lists = array();

        if ( is_array( $subscriptions ) ) {
            foreach ( $subscriptions as $subscription ) {
                $confirm_field = $subscription->confirm_field;

                if ( $confirm_field ) {
                    $confirm_field_value = Cf7_Helper::resolve_tags( $confirm_field, $submission_data );

                    if ( $confirm_field === $confirm_field_value || strlen( $confirm_field_value ) === 0 )
                        continue ;
                }

                $list_ids = $subscription->list_id;

                if ( empty( $list_ids ) || ! is_array( $list_ids) || count( $list_ids ) == 0 )
                    continue ;

                $use_custom_fields = (bool) Utils::get_value( $subscription, 'use_custom_fields', false );

                $fields = array();
                if ( $use_custom_fields ) {
                    $custom_fields = $subscription->custom_fields;

                    if ( is_array( $custom_fields ) && count( $custom_fields ) > 0 ) {
                        foreach ( $custom_fields as $custom_fields_item ) {
                            $list_field_id = trim( $custom_fields_item->list_field_id );
                            $form_field = trim( $custom_fields_item->form_field );
                            $meta_field = $custom_fields_item->list_field_meta;

                            if ( strlen( $list_field_id ) == 0 || strlen( $form_field ) == 0 || strlen( $meta_field ) == 0 )
                                continue ;

                            $meta_field = json_decode( $meta_field );

                            if ( ! $meta_field )
                                continue ;

                            $list_field_tag = Utils::get_value( $meta_field, 'tag' );
                            if ( strlen( $list_field_tag ) == 0 )
                                continue ;

                            $field_value = Cf7_Helper::resolve_tags( $form_field, $submission_data );

                            $fields[$list_field_tag] = $field_value;
                        }
                    }
                }

                foreach ( $list_ids as $list_id ) {
                    $list_id = trim( $list_id );
                    if ( empty( $list_id ) )
                        continue ;

                    $lists[$list_id] = array(
                        'id' => $list_id,

                        'fields' => $fields,
                    );
                }
            }
        }

        if ( count( $lists ) == 0 )
            return ;

        $resubscribe = (bool)(bool)Settings::instance()->get_option( 'resubscribe' );
        $subscription_options = array(
            'resubscribe' => $resubscribe,
        );

        $mailer_lite = new MailerLite_API( $api_key );

        if ( ! $resubscribe ) {
            $user_groups = $mailer_lite->get_subscriber_groups( $email );

            if ( count( $user_groups ) > 0 ) {
                $new_lists = array();
                foreach ( $lists as $list_id => $list ) {
                    if ( isset( $user_groups[$list_id] ) ) {
                        App_Log::info(
                            CF7C_Helper::get_cf7form_log_message_prefix( $form ) . 'The user is already subscribed to the list.', array( 'email' => $email, 'name' => $name, 'list' => $list_id )
                        );
                    } else {
                        $new_lists[$list_id] = $list;
                    }
                }

                $lists = $new_lists;
            }
        }

        if ( count( $lists ) === 0 )
            return ;

        if ( ! $mailer_lite->subscribe( $email, $name, $lists, $subscription_options ) ) {
            System_Log::error( CF7C_Helper::get_cf7form_log_message_prefix( $form ) . 'MailerLite subscription is failed: Error: ' . $mailer_lite->get_last_error(), array( 'email' => $email, 'name' => $name, 'lists' => $lists ) );
        } else {
            App_Log::info( CF7C_Helper::get_cf7form_log_message_prefix( $form ) . 'Subscribe a user to MailerLite group(s).', array( 'email' => $email, 'name' => $name, 'lists' => $lists ) );
        }
    }
}