<?php

namespace App\Http\Controllers;

use App\Models\UserCredit;
use App\Repositories\CreditRepository;
use Auth;
use Response;
use Storage;

class FileController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct() {}

    private function isPermissionShoppingOrder($shopping_order)
    {
        // Portal-Kunden (auth:customers) – Prüfung über shopping_user (billing_email + member_id)
        if (Auth::guard('customers')->check()) {
            $customer = Auth::guard('customers')->user();
            if ($customer->shopping_user_id) {
                $member = $customer->shoppingUser;
                if ($member && $shopping_order->shopping_user) {
                    $orderUser = $shopping_order->shopping_user;
                    if (
                        $orderUser->billing_email === $member->billing_email
                        && $orderUser->member_id === $member->member_id
                    ) {
                        return true;
                    }
                }
            }
        }

        // Admin / Berater (auth:user)
        if (Auth::check()) {
            $user_id = $shopping_order->auth_user_id ?: $shopping_order->member_id;
            if (Auth::user()->isAdmin() || $user_id == Auth::user()->id) {
                return true;
            }
        }

        abort(404);
    }

    private function isPermissionUserCredit($user_credit)
    {
        if (Auth::user()->isAdmin() || $user_credit->user_id == Auth::user()->id) {
            return true;
        }
        abort(404);
    }

    private function isPermissionAuth()
    {
        if (Auth::check()) {
            return true;
        }
        abort(403, 'Nicht autorisiert');
    }

    public function show($id = null, $from = null, $do = 'file', $locale = null)
    {

        $path = '';
        $filename = '';
        $disk = 'public';
        /*if($disk === 'user'){
            $file = \App\Models\File::findOrFail($id);
            $this->isPermission($file->user_id);
            $path = Storage::disk($disk)->path($file->dir.$file->filename);
            if (file_exists($path)) {
                return Response::file($path);
            }
        }*/
        if ($from === 'invoice') {
            $shopping_order = \App\Models\ShoppingOrder::findOrFail($id);
            if ($shopping_order->user_invoice) {
                $this->isPermissionShoppingOrder($shopping_order);
                $user_invoice = $shopping_order->user_invoice;
                $disk = $user_invoice->disk;
                // Lokalisierte Version wenn angegeben
                if ($locale && $locale !== 'de') {
                    $filename = $user_invoice->getFilenameLocale($locale);
                    $path = $user_invoice->getDownloadPathLocale($locale);
                } else {
                    $filename = $user_invoice->filename;
                    $path = $user_invoice->getDownloadPath();
                }
            }
        }

        if ($from === 'delivery') {
            $shopping_order = \App\Models\ShoppingOrder::findOrFail($id);
            if ($shopping_order->user_invoice) {
                $this->isPermissionShoppingOrder($shopping_order);
                $user_invoice = $shopping_order->user_invoice;
                $disk = $user_invoice->disk;
                // Lokalisierte Version wenn angegeben
                if ($locale && $locale !== 'de') {
                    $filename = $user_invoice->getFilenameLocale($locale);
                    // Für Lieferschein den lokalisierten Pfad ermitteln
                    $localizedDeliveryFilename = str_replace('.pdf', '-'.$locale.'.pdf', $user_invoice->delivery_filename);
                    $localizedPath = $user_invoice->delivery_dir.$localizedDeliveryFilename;
                    if (Storage::disk($disk)->exists($localizedPath)) {
                        $filename = $localizedDeliveryFilename;
                        $path = $localizedPath;
                    } else {
                        $filename = $user_invoice->delivery_filename;
                        $path = $user_invoice->getDownloadPathDelivery();
                    }
                } else {
                    $filename = $user_invoice->delivery_filename;
                    $path = $user_invoice->getDownloadPathDelivery();
                }
            }
        }

        if ($from === 'cancellation') {
            $shopping_order = \App\Models\ShoppingOrder::findOrFail($id);
            $this->isPermissionShoppingOrder($shopping_order);

            // Stornorechnung finden: cancellation=true UND cancellation_id=null
            // (Die Original-Rechnung hat auch cancellation=true, aber MIT cancellation_id)
            $cancellation_invoice = \App\Models\UserInvoice::where('shopping_order_id', $shopping_order->id)
                ->where('cancellation', true)
                ->whereNull('cancellation_id')
                ->first();

            if ($cancellation_invoice) {
                $disk = $cancellation_invoice->disk;
                // Lokalisierte Version wenn angegeben
                if ($locale && $locale !== 'de') {
                    $filename = $cancellation_invoice->getFilenameLocale($locale);
                    $path = $cancellation_invoice->getDownloadPathLocale($locale);
                } else {
                    $filename = $cancellation_invoice->filename;
                    $path = $cancellation_invoice->getDownloadPath();
                }
            } else {
                return Response::make('Stornorechnung nicht gefunden.', 404);
            }
        }

        if ($from === 'credit') {
            $user_credit = \App\Models\UserCredit::findOrFail($id);
            $this->isPermissionUserCredit($user_credit);
            $disk = $user_credit->disk;
            // Lokalisierte Version wenn angegeben
            if ($locale && $locale !== 'de') {
                $filename = $user_credit->getFilenameLocale($locale);
                $path = $user_credit->getDownloadPathLocale($locale);
            } else {
                $filename = $user_credit->filename;
                $path = $user_credit->getDownloadPath();
            }
        }

        if ($from === 'credit_detail') {
            $user_credit = \App\Models\UserCredit::findOrFail($id);
            $this->isPermissionUserCredit($user_credit);

            return $this->create_credit_detail($user_credit, $do);

            /*
             $filename = $user_credit->filename;
            $disk = $user_credit->disk;
            $path = $user_credit->getDownloadPath();
            */
        }

        if ($from === 'dc_file') {
            //  $this->isPermissionAuth();
            $dc_file = \App\Models\DcFile::findOrFail($id);
            $filename = $dc_file->filename;
            $disk = 'public';
            $path = $dc_file->getFile();
        }
        if ($from === 'dc_thumb') {
            //  $this->isPermissionAuth();
            $dc_file = \App\Models\DcFile::findOrFail($id);
            $filename = $dc_file->filename;
            $disk = 'public';
            $path = $dc_file->getThumb();
        }

        if ($from === 'dc_big') {
            //  $this->isPermissionAuth();
            $dc_file = \App\Models\DcFile::findOrFail($id);
            $filename = $dc_file->filename;
            $disk = 'public';
            $path = $dc_file->getBig();
        }

        if ($from === 'user') {
            $file = \App\Models\File::findOrFail($id);
            $filename = $file->filename;
            $disk = 'user';
            $path = $file->dir.$file->filename;
        }

        if (! Storage::disk($disk)->exists($path)) {
            return Response::make('Datei nicht gefunden.', 404);
        }

        if ($do === 'download') {
            return Storage::disk($disk)->download($path, $filename);
        }

        $file = Storage::disk($disk)->get($path);
        $mime = Storage::disk($disk)->mimeType($path);
        if (isset($file)) {
            if ($do === 'stream') {
                return Storage::disk($disk)->response($path, $filename);
            }

            if ($do === 'file') {
                return Response::make($file, 200)
                    ->header('Content-Type', $mime)
                    ->header('Content-Length', strlen($file))
                    ->header('Content-disposition', 'filename="'.$filename.'"');
            }
            if ($do === 'image') {
                return Response::make($file, 200)
                    ->header('Content-Type', $mime);
            }
            if ($do === 'pdf') {
                $path = storage_path().'/app/public/'.$path;

                $headers = [
                    'Content-Type:'.$mime,
                    // 'Content-Length: ' . $file->size
                    // 'Content-Disposition: ' . $stream . '; filename=' . $file->original_name
                ];

                return Response::download($path, $filename, $headers);
            }
        }
    }

    private function create_credit_detail(UserCredit $user_credit, $do)
    {

        $credit_repo = new CreditRepository($user_credit->user);

        return $credit_repo->create_report($user_credit, $do);
        // \Session()->flash('alert-success', "Gutschrift erstellt");

    }
}