<?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. 
 */

namespace Kernel;

class Translator
{
    protected static array $translations = [];
    protected static array $paths = [];
    protected static array $themePaths = [];
    protected static string $locale = 'pt_BR';

    /**
     * Add a namespace for translations
     */
    public static function addNamespace(string $namespace, string $path): void
    {
        self::$paths[$namespace] = $path;
    }

    /**
     * Add a theme path for translation overrides
     */
    public static function addThemePath(string $path): void
    {
        self::$themePaths[] = $path;
    }

    /**
     * Set the current locale
     */
    public static function setLocale(string $locale): void
    {
        self::$locale = $locale;
        self::loadTranslations();
    }

    /**
     * Get the current locale
     */
    public static function getLocale(): string
    {
        return self::$locale;
    }

    /**
     * Translate a key
     */
    public static function translate(string $key, array $params = []): string
    {
        if (!isset(self::$translations[$key])) {
            return $key;
        }

        $translation = self::$translations[$key];

        // Se não foi passado platformName explicitamente, tenta pegar do PlatformService
        if (!isset($params['platformName'])) {
            try {
                $platformService = new \App\Services\PlatformService();
                $params['platformName'] = $platformService->getPlatformName();
            } catch (\Exception $e) {
                $params['platformName'] = 'SysCMS';
            }
        }

        if (!empty($params)) {
            foreach ($params as $param => $value) {
                if ($value !== null) {
                    $translation = str_replace(":{$param}", (string)$value, $translation);
                }
            }
        }

        return $translation;
    }

    /**
     * Load translations from files
     */
    protected static function loadTranslations(): void
    {
        self::$translations = [];

        // Load standard paths
        foreach (self::$paths as $namespace => $path) {
            self::loadFromPath($path);
        }

        // Load theme overrides (highest priority)
        foreach (self::$themePaths as $path) {
            self::loadFromPath($path);
        }
    }

    /**
     * Load translations from a specific path
     */
    protected static function loadFromPath(string $path): void
    {
        $localePath = $path . '/' . self::$locale;
        
        if (is_dir($localePath)) {
            $files = glob($localePath . '/*.json');
            
            foreach ($files as $file) {
                $filename = basename($file, '.json');
                $content = file_get_contents($file);
                if ($content === false) {
                    continue;
                }
                $translations = json_decode($content, true);
                
                if (is_array($translations)) {
                    // Flatten the translations to support dot notation
                    $flatTranslations = self::flatten($translations);
                    foreach ($flatTranslations as $key => $value) {
                        self::$translations[$filename . '.' . $key] = $value;
                    }
                }
            }
        }
    }

    /**
     * Flatten a multi-dimensional associative array with dot notation.
     *
     * @param  array   $array
     * @param  string  $prepend
     * @return array
     */
    protected static function flatten(array $array, string $prepend = ''): array
    {
        $results = [];

        foreach ($array as $key => $value) {
            if (is_array($value) && !empty($value)) {
                $results = array_merge($results, self::flatten($value, $prepend . $key . '.'));
            } else {
                $results[$prepend . $key] = $value;
            }
        }

        return $results;
    }
}