<?php

namespace cx_newsletter;

trait activity_simple_template {
    protected function set(string $name, mixed $content) : self {
        $this->site_params[$name] = $content;

        return $this;
    }

    public function get(string $name) : mixed {
        if (!array_key_exists($name, $this->site_params)) {
            return null;
        }

        return $this->site_params[$name];
    }

    protected function get_site_template_name() : ?string {
        return null;
    }

    protected function get_site_params() : array {
        $this->set('toast_place', $this->render_toast());

        return $this->site_params;
    }

    public function render() : \cx_appengine\string_builder {
        $template = match ($this->is_failed()) {
            true => $this->get_error_template(),
            false => $this->get_site_template()
        };

        $options = match ($this->is_failed()) {
            true => $this->get_error_site_params(),
            false => $this->get_site_params()
        };

        return $template->render($options);
    }

    protected function get_site_template() : \cx_appengine\template {
        $name = $this->get_site_template_name();

        if ($name === null) {
            $content = new \cx_appengine\string_builder();
            $content->push('Activity class must overwrite get_site_template ');
            $content->push('function or get_site_template_name() function.');

            throw new \Exception($content->get());
        }

        return (
            $this
            ->get_templates()
            ->prepare($name)
        );
    }

    protected function construct_simple_template() : self {
        $this->site_params = [];
        return $this;
    }

    private array $site_params;
}