<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Route;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\View;
use App\Services\ModuleManager;

class ModuleServiceProvider extends ServiceProvider
{
    protected ?array $activeModuleNames = null;

    /**
     * Register services.
     */
    public function register(): void
    {
        // Registra il ModuleManager come singleton
        $this->app->singleton(ModuleManager::class, function ($app) {
            return new ModuleManager();
        });
    }

    /**
     * Bootstrap services.
     */
    public function boot(): void
    {
        // Carica automaticamente le route dei moduli attivi
        $this->loadModuleRoutes();

        // Carica le view dei moduli
        $this->loadModuleViews();

        // Carica le translations dei moduli  
        $this->loadModuleTranslations();

        // Carica le configurazioni dei moduli
        $this->loadModuleConfigs();
    }

    /**
     * Carica le route dei moduli attivi
     */
    protected function loadModuleRoutes(): void
    {
        $moduleManager = $this->app->make(ModuleManager::class);

        $activeModuleNames = $this->getActiveModuleNames();
        if (empty($activeModuleNames)) {
            return;
        }

        foreach ($activeModuleNames as $moduleName) {
            $routesPath = app_path("Modules/{$moduleName}/Routes/web.php");

            if (File::exists($routesPath)) {
                // Carica le routes con middleware web (che include già il prefisso admin nel file)
                Route::middleware('web')->group($routesPath);
            }

            // Carica anche le API routes se esistono
            $apiRoutesPath = app_path("Modules/{$moduleName}/Routes/api.php");
            if (File::exists($apiRoutesPath)) {
                Route::middleware('api')
                    ->prefix('api')
                    ->group($apiRoutesPath);
            }
        }
    }

    /**
     * Carica le view dei moduli
     */
    protected function loadModuleViews(): void
    {
        $activeModuleNames = $this->getActiveModuleNames();
        if (empty($activeModuleNames)) {
            return;
        }

        foreach ($activeModuleNames as $moduleName) {
            $viewsPath = app_path("Modules/{$moduleName}/Views");

            if (File::isDirectory($viewsPath)) {
                // Approccio diretto: registra il namespace usando View::addNamespace
                $namespace = 'modules.' . strtolower($moduleName);

                try {
                    // Usa View::addNamespace per registrare direttamente
                    view()->addNamespace($namespace, $viewsPath);
                    Log::info("Registrato namespace view diretto: {$namespace} -> {$viewsPath}");

                    // Per compatibilità, registra anche con trattini se necessario
                    if ($moduleName === 'StampeRate') {
                        view()->addNamespace('modules.stampe-rate', $viewsPath);
                        Log::info("Registrato namespace compatibilità: modules.stampe-rate -> {$viewsPath}");
                    }
                } catch (\Exception $e) {
                    Log::error("Errore registrazione namespace {$namespace}: " . $e->getMessage());
                }
            }
        }
    }
    /**
     * Carica le traduzioni dei moduli
     */
    protected function loadModuleTranslations(): void
    {
        $activeModuleNames = $this->getActiveModuleNames();
        if (empty($activeModuleNames)) {
            return;
        }

        foreach ($activeModuleNames as $moduleName) {
            $langPath = app_path("Modules/{$moduleName}/Lang");

            if (File::isDirectory($langPath)) {
                $this->loadTranslationsFrom($langPath, strtolower($moduleName));
            }
        }
    }

    /**
     * Carica le configurazioni dei moduli
     */
    protected function loadModuleConfigs(): void
    {
        $activeModuleNames = $this->getActiveModuleNames();
        if (empty($activeModuleNames)) {
            return;
        }

        foreach ($activeModuleNames as $moduleName) {
            $configPath = app_path("Modules/{$moduleName}/Config");

            if (File::isDirectory($configPath)) {
                $configFiles = File::files($configPath);

                foreach ($configFiles as $file) {
                    $configName = strtolower($moduleName) . '.' . pathinfo($file->getFilename(), PATHINFO_FILENAME);
                    $this->mergeConfigFrom($file->getPathname(), $configName);
                }
            }
        }
    }

    /**
     * Ottiene la lista dei moduli attivi dal database in modo sicuro.
     */
    protected function getActiveModuleNames(): array
    {
        if ($this->activeModuleNames !== null) {
            return $this->activeModuleNames;
        }

        if (!$this->modulesTableExists()) {
            return $this->activeModuleNames = [];
        }

        try {
            return $this->activeModuleNames = DB::table('modules')
                ->where('status', 'active')
                ->pluck('name')
                ->toArray();
        } catch (\Throwable $e) {
            Log::warning('ModuleServiceProvider: impossibile caricare moduli attivi', [
                'error' => $e->getMessage(),
            ]);

            return $this->activeModuleNames = [];
        }
    }

    protected function modulesTableExists(): bool
    {
        try {
            return DB::connection()->getSchemaBuilder()->hasTable('modules');
        } catch (\Throwable $e) {
            Log::notice('ModuleServiceProvider: schema builder non disponibile', [
                'error' => $e->getMessage(),
            ]);

            return false;
        }
    }
}