<?php

namespace NoccyLabs\Mercureact;

use Symfony\Component\Yaml\Yaml;

class Configuration
{
    private ?string $publicUrl = null;

    private ?string $jwtSecret = null;

    private bool $allowAnonymousSubscribe = false;

    private array $listeners = [];

    public static function createDefault(): Configuration
    {
        return new Configuration();
    }

    public static function fromFile(string $file): Configuration
    {
        $config = new Configuration();

        $yaml = Yaml::parseFile($file);

        if (isset($yaml['security'])) {
            $security = $yaml['security'];
            if (isset($security['jwt_secret']))
                $config->setJwtSecret($security['jwt_secret']);
        }

        if (isset($yaml['subscribe'])) {
            $subscribe = $yaml['subscribe'];
            if (isset($subscribe['allow_anonymous']))
                $config->setAllowAnonymousSubscribe(boolval($subscribe['allow_anonymous']));
        }

        if (isset($yaml['listeners'])) {
            foreach ($yaml['listeners'] as $listener) {
                if (!is_array($listener)) {
                    throw new \Exception("Bad listener config");
                }
                $config->addListener($listener);
            }
        }

        return $config;
    }

    public function setPublicUrl(string $publicUrl): self
    {
        $this->publicUrl = $publicUrl;
        return $this;
    }

    public function getPublicUrl(): ?string
    {
        return $this->publicUrl;
    }

    public function setJwtSecret(string $secret): self
    {
        $this->jwtSecret = $secret;
        return $this;
    }

    public function getJwtSecret(): ?string
    {
        return $this->jwtSecret;
    }

	function getAllowAnonymousSubscribe():bool
    {
		return $this->allowAnonymousSubscribe;
	}

	function setAllowAnonymousSubscribe(bool $allowAnonymousSubscribe): self
    {
		$this->allowAnonymousSubscribe = $allowAnonymousSubscribe;
		return $this;
    }

    function addListener(array $config): self
    {
        $this->listeners[] = [
            'address' => $config['address']??throw new \Exception("Address can't be empty"),
            'cors' => isset($config['cors'])?[
                'allow_origin' => $config['cors']['allow_origin']??'*',
                'csp' => $config['cors']['csp']??'default-src * \'self\'',
            ]:[
                'allow_origin' => '*',
                'csp' => 'default-src * \'self\'',
            ],
        ];
        return $this;
    }

    public function getListeners(): array
    {
        return $this->listeners;
    }
}