cx-newsletter/activities/10-sending_test.php

<?php

namespace cx_newsletter;
use \Exception;

class sending_test_activity
extends activity {
    public function show_after_button() : null {
        return null;
    }

    public function inside_buttons() : array {
        return [ 'test' ];
    }

    public function inside_inputs() : array {
        return [
            'target' => 'email'
        ];
    }

    public function get_site_template_name() : string {
        return 'sending_test';
    }

    private function validate_result() : ?string {
        if ($this->is_received('target') and !$this->is_validated('target')) {
            return 'Target email is empty or not valid.';
        }

        return null;
    }

    private function prepare_mail() : single_mail {
        $mail = new single_mail();

        $mail->title = 'Test message from cx-newsletter.';
        $mail->content = 'Hello!<br> This is tested message ';
        $mail->content .= 'from cx-newsletter. <p style="color: green;">';
        $mail->content .= 'If it is green, HTML work.</p>';
        $mail->is_html = true;
        $mail->to = $this->get_validated('target');

        return $mail;
    }

    public function process() : self {
        $validation = $this->validate_result();

        if ($validation !== null) {
            $this->error_toast($validation);
            return $this;
        }

        if (!$this->is_received('target')) {
            return $this;
        }

        try {
            $mailer = new mail_manager($this->get_settings());
            $mailer->prepare($this->prepare_mail());
            
            if (!$mailer->send(true)) {
                throw new Exception('Can not send email.');    
            }
        } catch (Exception $exception) {
            $this->error_toast($exception->getMessage());
            return $this;
        }

        $this->success_toast('Successed sended!');
        return $this;
    }
}