cx-newsletter/traits/1-activity_toast.php

<?php

namespace cx_newsletter;

trait activity_toast {
    private function get_toast_template() : \cx_appengine\template {
        return (
            $this
            ->get_templates()
            ->prepare('toast')
        );
    }

    protected function success_toast(string $content) : self {
        return $this->make_toast($content, toast_type::success);
    }

    protected function warning_toast(string $content) : self {
        return $this->make_toast($content, toast_type::warning);
    }

    protected function error_toast(string $content) : self {
        return $this->make_toast($content, toast_type::error);
    }

    private function make_toast(string $content, toast_type $type) : self {
        $this->toast = __($content, 'cx_newsletter');
        $this->toast_type = $type;
    
        return $this;
    }

    protected function has_toast() : bool {
        return $this->toast !== null and $this->toast_type !== null;
    }

    private function get_toast_params() : array {
        return [
            'content' => $this->toast,
            'type' => $this->toast_type->value
        ];
    }

    protected function render_toast() : \cx_appengine\string_builder {
        if (!$this->has_toast()) {
            return new \cx_appengine\string_builder(); 
        }

        return (
            $this
            ->get_toast_template()
            ->render($this->get_toast_params())
        );
    }

    protected function construct_toast() : self {
        $this->toast = null;
        $this->toast_type = null;
        
        return $this;
    }
   
    private ?toast_type $toast_type;
    private ?string $toast;
}