<?php

/** 
 * SysCMS - Content Management System 
 * 
 * Copyright (c) 2025 Marco Costa 
 * All rights reserved. 
 * 
 * Author: Marco Costa 
 * Email: contato@syspanel.com.br 
 * Project: SysCMS 
 * 
 * This software is licensed, not sold. 
 * Permission is granted to use this software 
 * subject to the terms of the SysCMS Commercial License. 
 * 
 * Redistribution, sublicensing, resale, or 
 * disclosure of this software, in whole or in part, 
 * is strictly prohibited without prior written permission. 
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND. 
 */

use Dotenv\Dotenv;

if (!function_exists('load_env')) {
    /**
     * Loads environment variables from the .env file
     * 
     * @param string|null $path Path to the project root directory
     * @return void
     */
    function load_env(?string $path = null): void
    {
        static $loaded = false;
        
        if ($loaded) {
            return;
        }
        
        $path = $path ?? dirname(__DIR__, 2);
        
        if (file_exists($path . '/.env')) {
            $dotenv = Dotenv::createImmutable($path);
            $dotenv->load();
            $loaded = true;
        }
    }
}

if (!function_exists('get_env')) {
    /**
     * Gets an environment variable with a default value
     *
     * @param string $key Variable name
     * @param mixed $default Default value if not exists
     * @return mixed
     */
    function get_env(string $key, $default = null)
    {
        return $_ENV[$key] ?? $_SERVER[$key] ?? $default;
    }
}

if (!function_exists('env')) {
    /**
     * Alias for get_env to maintain compatibility
     *
     * @param string $key Variable name
     * @param mixed $default Default value if not exists
     * @return mixed
     */
    function env(string $key, $default = null)
    {
        return get_env($key, $default);
    }
}

if (!function_exists('env_bool')) {
    /**
     * Gets an environment variable as boolean
     *
     * @param string $key Variable name
     * @param bool $default Default value if not exists
     * @return bool
     */
    function env_bool(string $key, bool $default = false): bool
    {
        $value = get_env($key, $default);
        
        if (is_bool($value)) {
            return $value;
        }
        
        return filter_var($value, FILTER_VALIDATE_BOOLEAN);
    }
}

if (!function_exists('env_int')) {
    /**
     * Gets an environment variable as integer
     *
     * @param string $key Variable name
     * @param int $default Default value if not exists
     * @return int
     */
    function env_int(string $key, int $default = 0): int
    {
        return (int) get_env($key, $default);
    }
}

if (!function_exists('get_db_config')) {
    /**
     * Gets database configuration from environment variables
     *
     * @return array
     */
    function get_db_config(): array
    {
        return [
            'driver'    => get_env('DB_DRIVER', get_env('DB_CONNECTION', 'mysql')),
            'host'      => get_env('DB_HOST', 'localhost'),
            'port'      => get_env('DB_PORT', '3306'),
            'database'  => get_env('DB_DATABASE', 'syscms'),
            'username'  => get_env('DB_USERNAME', 'root'),
            'password'  => get_env('DB_PASSWORD', ''),
            'charset'   => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix'    => '',
        ];
    }
}

if (!function_exists('get_app_config')) {
    /**
     * Gets application configuration from environment variables
     *
     * @return array
     */
    function get_app_config(): array
    {
        return [
            'name'     => get_env('APP_NAME', 'SysCMS'),
            'env'      => get_env('APP_ENV', 'development'),
            'debug'    => env_bool('APP_DEBUG', true),
            'url'      => get_env('APP_URL', 'http://localhost:16240'),
            'timezone' => get_env('APP_TIMEZONE', 'America/Sao_Paulo'),
            'key'      => get_env('APP_KEY', ''),
        ];
    }
}

if (!function_exists('get_mail_config')) {
    /**
     * Gets email configuration from environment variables
     *
     * @return array
     */
    function get_mail_config(): array
    {
        return [
            'transport'    => get_env('MAIL_TRANSPORT', 'smtp'),
            'host'         => get_env('MAIL_HOST', 'localhost'),
            'port'         => get_env('MAIL_PORT', '587'),
            'username'     => get_env('MAIL_USERNAME', ''),
            'password'     => get_env('MAIL_PASSWORD', ''),
            'encryption'   => get_env('MAIL_ENCRYPTION', 'tls'),
            'from_address' => get_env('MAIL_FROM_ADDRESS', ''),
            'from_name'    => get_env('MAIL_FROM_NAME', 'SysCMS'),
        ];
    }
}