<?php
declare(strict_types=1);

namespace MailAccountAdmin\Config\Loaders;

use MailAccountAdmin\Config\AppConfig;

class YamlConfigLoader implements ConfigLoaderInterface
{
    private string $filePath;

    public function __construct(string $filePath)
    {
        assert(file_exists($filePath));

        $this->filePath = $filePath;
    }

    public function loadConfig(): AppConfig
    {
        // Parse yml config file
        $parsedConfig = yaml_parse_file($this->filePath);

        // Check datatypes
        assert(is_array($parsedConfig));
        assert(!isset($parsedConfig['twig']) || is_array($parsedConfig['twig']));
        assert(!isset($parsedConfig['database']) || is_array($parsedConfig['database']));

        return AppConfig::createFromArray([
            // App settings
            'appTitle' => $parsedConfig['appTitle'] ?? null,
            'environment' => $parsedConfig['environment'] ?? null,
            'debug' => isset($parsedConfig['debug'] ? (bool)$parsedConfig['debug'] : null,
            'timezone' => $parsedConfig['timezone'] ?? null,
            'dateTimeFormat' => $parsedConfig['dateTimeFormat'] ?? null,

            // Twig settings
            'twigCacheDir' => $parsedConfig['twig']['cacheDir'] ?? null,

            // Database settings
            'databaseHost' => $parsedConfig['database']['host'] ?? null,
            'databasePort' => isset($parsedConfig['database']['port'] ? (int)$parsedConfig['database']['port'] : null,
            'databaseName' => $parsedConfig['database']['name'] ?? null,
            'databaseUsername' => $parsedConfig['database']['username'] ?? null,
            'databasePassword' => $parsedConfig['database']['password'] ?? null,
        ]);
    }
}