<?php

namespace App\Http\Controllers\Admin;

use App\Events\UserUpdateCreditsEvent;
use App\Http\Controllers\Controller;
use App\Models\Configuration;
use App\Models\InvoiceSettings;
use App\Models\Payment;
use App\Models\CreditProduct;
use App\Models\User;
use App\Notifications\InvoiceNotification;
use App\Notifications\ConfirmPaymentNotification;
use Exception;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Contracts\View\Factory;
use Illuminate\Contracts\View\View;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;
use LaravelDaily\Invoices\Classes\Buyer;
use LaravelDaily\Invoices\Classes\InvoiceItem;
use LaravelDaily\Invoices\Classes\Party;
use LaravelDaily\Invoices\Invoice;
use PayPalCheckoutSdk\Core\PayPalHttpClient;
use PayPalCheckoutSdk\Core\ProductionEnvironment;
use PayPalCheckoutSdk\Core\SandboxEnvironment;
use PayPalCheckoutSdk\Orders\OrdersCaptureRequest;
use PayPalCheckoutSdk\Orders\OrdersCreateRequest;
use PayPalHttp\HttpException;
use Stripe\Stripe;


class PaymentController extends Controller
{

    /**
     * @return Application|Factory|View
     */
    public function index()
    {
        return view('admin.payments.index')->with([
            'payments' => Payment::paginate(15)
        ]);
    }

    /**
     * @param Request $request
     * @param CreditProduct $creditProduct
     * @return Application|Factory|View
     */
    public function checkOut(Request $request, CreditProduct $creditProduct)
    {
        return view('store.checkout')->with([
            'product'      => $creditProduct,
            'taxvalue'     => $creditProduct->getTaxValue(),
            'taxpercent'   => $creditProduct->getTaxPercent(),
            'total'        => $creditProduct->getTotalPrice()
        ]);
    }

    /**
     * @param Request $request
     * @param CreditProduct $creditProduct
     * @return RedirectResponse
     */
    public function PaypalPay(Request $request, CreditProduct $creditProduct)
    {
        $request = new OrdersCreateRequest();
        $request->prefer('return=representation');
        $request->body = [
            "intent" => "CAPTURE",
            "purchase_units" => [
                [
                    "reference_id" => uniqid(),
                    "description" => $creditProduct->description,
                    "amount"       => [
                        "value"         => $creditProduct->getTotalPrice(),
                        'currency_code' => strtoupper($creditProduct->currency_code),
                        'breakdown' => [
                            'item_total' =>
                            [
                                'currency_code' => strtoupper($creditProduct->currency_code),
                                'value' => $creditProduct->price,
                            ],
                            'tax_total' =>
                            [
                                'currency_code' => strtoupper($creditProduct->currency_code),
                                'value' => $creditProduct->getTaxValue(),
                            ]
                        ]
                    ]
                ]
            ],
            "application_context" => [
                "cancel_url" => route('payment.Cancel'),
                "return_url" => route('payment.PaypalSuccess', ['product' => $creditProduct->id]),
                'brand_name' =>  config('app.name', 'Laravel'),
                'shipping_preference'  => 'NO_SHIPPING'
            ]


        ];


        try {
            // Call API with your client and get a response for your call
            $response = $this->getPayPalClient()->execute($request);
            return redirect()->away($response->result->links[1]->href);

            // If call returns body in response, you can get the deserialized version from the result attribute of the response
        } catch (HttpException $ex) {
            echo $ex->statusCode;
            dd(json_decode($ex->getMessage()));
        }
    }

    /**
     * @return PayPalHttpClient
     */
    protected function getPayPalClient()
    {
        $environment = env('APP_ENV') == 'local'
            ? new SandboxEnvironment($this->getPaypalClientId(), $this->getPaypalClientSecret())
            : new ProductionEnvironment($this->getPaypalClientId(), $this->getPaypalClientSecret());

        return new PayPalHttpClient($environment);
    }

    /**
     * @return string
     */
    protected function getPaypalClientId()
    {
        return env('APP_ENV') == 'local' ? env('PAYPAL_SANDBOX_CLIENT_ID') : env('PAYPAL_CLIENT_ID');
    }

    /**
     * @return string
     */
    protected function getPaypalClientSecret()
    {
        return env('APP_ENV') == 'local' ? env('PAYPAL_SANDBOX_SECRET') : env('PAYPAL_SECRET');
    }

    /**
     * @param Request $laravelRequest
     */
    public function PaypalSuccess(Request $laravelRequest)
    {
        /** @var CreditProduct $creditProduct */
        $creditProduct = CreditProduct::findOrFail($laravelRequest->input('product'));

        /** @var User $user */
        $user = Auth::user();

        $request = new OrdersCaptureRequest($laravelRequest->input('token'));
        $request->prefer('return=representation');
        try {
            // Call API with your client and get a response for your call
            $response = $this->getPayPalClient()->execute($request);
            if ($response->statusCode == 201 || $response->statusCode == 200) {

                //update credits
                $user->increment('credits', $creditProduct->quantity);

                //update server limit
                if (Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE') !== 0) {
                    if ($user->server_limit < Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')) {
                        $user->update(['server_limit' => Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')]);
                    }
                }

                //update role
                if ($user->role == 'member') {
                    $user->update(['role' => 'client']);
                }

                //store payment
                $payment = Payment::create([
                    'user_id' => $user->id,
                    'payment_id' => $response->result->id,
                    'payment_method' => 'paypal',
                    'type' => 'Credits',
                    'status' => 'paid',
                    'amount' => $creditProduct->quantity,
                    'price' => $creditProduct->price,
                    'tax_value' => $creditProduct->getTaxValue(),
                    'tax_percent' => $creditProduct->getTaxPercent(),
                    'total_price' => $creditProduct->getTotalPrice(),
                    'currency_code' => $creditProduct->currency_code,
                    'credit_product_id' => $creditProduct->id,
                ]);


                event(new UserUpdateCreditsEvent($user));

                $this->createInvoice($user, $payment, 'paid');

                //redirect back to home
                return redirect()->route('home')->with('success', __('Your credit balance has been increased!'));
            }


            // If call returns body in response, you can get the deserialized version from the result attribute of the response
            if (env('APP_ENV') == 'local') {
                dd($response);
            } else {
                abort(500);
            }
        } catch (HttpException $ex) {
            if (env('APP_ENV') == 'local') {
                echo $ex->statusCode;
                dd($ex->getMessage());
            } else {
                abort(422);
            }
        }
    }


    /**
     * @param Request $request
     */
    public function Cancel(Request $request)
    {
        return redirect()->route('store.index')->with('success', 'Payment was Canceled');
    }

    /**
     * @param Request $request
     * @param CreditProduct $creditProduct
     * @return RedirectResponse
     */
    public function StripePay(Request $request, CreditProduct $creditProduct)
    {
        $stripeClient = $this->getStripeClient();


        $request = $stripeClient->checkout->sessions->create([
            'line_items' => [
                [
                    'price_data' => [
                        'currency' => $creditProduct->currency_code,
                        'product_data' => [
                            'name' => $creditProduct->display,
                            'description' => $creditProduct->description,
                        ],
                        'unit_amount_decimal' => round($creditProduct->price * 100, 2),
                    ],
                    'quantity' => 1,
                ],
                [
                    'price_data' => [
                        'currency' => $creditProduct->currency_code,
                        'product_data' => [
                            'name' => 'Product Tax',
                            'description' => $creditProduct->getTaxPercent() . "%",
                        ],
                        'unit_amount_decimal' => round($creditProduct->getTaxValue(), 2) * 100,
                    ],
                    'quantity' => 1,
                ]
            ],

            'mode' => 'payment',
            "payment_method_types" => str_getcsv(env('STRIPE_METHODS')),
            'success_url' => route('payment.StripeSuccess',  ['product' => $creditProduct->id]) . '&session_id={CHECKOUT_SESSION_ID}',
            'cancel_url' => route('payment.Cancel'),
        ]);


        return redirect($request->url, 303);
    }

    /**
     * @param Request $request
     */
    public function StripeSuccess(Request $request)
    {
        /** @var CreditProduct $creditProduct */
        $creditProduct = CreditProduct::findOrFail($request->input('product'));

        /** @var User $user */
        $user = Auth::user();

        $stripeClient = $this->getStripeClient();

        try {
            //get stripe data
            $paymentSession = $stripeClient->checkout->sessions->retrieve($request->input('session_id'));
            $paymentIntent = $stripeClient->paymentIntents->retrieve($paymentSession->payment_intent);

            //get DB entry of this payment ID if existing
            $paymentDbEntry = Payment::where('payment_id', $paymentSession->payment_intent)->count();

            // check if payment is 100% completed and payment does not exist in db already
            if ($paymentSession->status == "complete" && $paymentIntent->status == "succeeded" && $paymentDbEntry == 0) {

                //update credits
                $user->increment('credits', $creditProduct->quantity);

                //update server limit
                if (Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE') !== 0) {
                    if ($user->server_limit < Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')) {
                        $user->update(['server_limit' => Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')]);
                    }
                }

                //update role
                if ($user->role == 'member') {
                    $user->update(['role' => 'client']);
                }

                //store paid payment
                $payment = Payment::create([
                    'user_id' => $user->id,
                    'payment_id' => $paymentSession->payment_intent,
                    'payment_method' => 'stripe',
                    'type' => 'Credits',
                    'status' => 'paid',
                    'amount' => $creditProduct->quantity,
                    'price' => $creditProduct->price,
                    'tax_value' => $creditProduct->getTaxValue(),
                    'total_price' => $creditProduct->getTotalPrice(),
                    'tax_percent' => $creditProduct->getTaxPercent(),
                    'currency_code' => $creditProduct->currency_code,
                    'credit_product_id' => $creditProduct->id,
                ]);

                //payment notification
                $user->notify(new ConfirmPaymentNotification($payment));

                event(new UserUpdateCreditsEvent($user));

                $this->createInvoice($user, $payment, 'paid');

                //redirect back to home
                return redirect()->route('home')->with('success', __('Your credit balance has been increased!'));
            } else {
                if ($paymentIntent->status == "processing") {

                    //store processing payment
                    $payment = Payment::create([
                        'user_id' => $user->id,
                        'payment_id' => $paymentSession->payment_intent,
                        'payment_method' => 'stripe',
                        'type' => 'Credits',
                        'status' => 'processing',
                        'amount' => $creditProduct->quantity,
                        'price' => $creditProduct->price,
                        'tax_value' => $creditProduct->getTaxValue(),
                        'total_price' => $creditProduct->getTotalPrice(),
                        'tax_percent' => $creditProduct->getTaxPercent(),
                        'currency_code' => $creditProduct->currency_code,
                        'credit_product_id' => $creditProduct->id,
                    ]);

                    $this->createInvoice($user, $payment, 'processing');

                    //redirect back to home
                    return redirect()->route('home')->with('success', __('Your payment is being processed!'));
                }
                if ($paymentDbEntry == 0 && $paymentIntent->status != "processing") {
                    $stripeClient->paymentIntents->cancel($paymentIntent->id);

                    //redirect back to home
                    return redirect()->route('home')->with('success', __('Your payment has been canceled!'));
                } else {
                    abort(402);
                }
            }
        } catch (HttpException $ex) {
            if (env('APP_ENV') == 'local') {
                echo $ex->statusCode;
                dd($ex->getMessage());
            } else {
                abort(422);
            }
        }
    }

    /**
     * @param Request $request
     */
    protected function handleStripePaymentSuccessHook($paymentIntent)
    {
        try {
            // Get payment db entry
            $payment = Payment::where('payment_id', $paymentIntent->id)->first();
            $user = User::where('id', $payment->user_id)->first();

            if ($paymentIntent->status == 'succeeded' && $payment->status == 'processing') {
                // Increment User Credits
                $user->increment('credits', $payment->amount);

                //update server limit
                if (Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE') !== 0) {
                    if ($user->server_limit < Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')) {
                        $user->update(['server_limit' => Configuration::getValueByKey('SERVER_LIMIT_AFTER_IRL_PURCHASE')]);
                    }
                }

                //update role
                if ($user->role == 'member') {
                    $user->update(['role' => 'client']);
                }

                //update payment db entry status
                $payment->update(['status' => 'paid']);

                //payment notification
                $user->notify(new ConfirmPaymentNotification($payment));
                event(new UserUpdateCreditsEvent($user));

                $this->createInvoice($user, $payment, 'paid');
            }
        } catch (HttpException $ex) {
            abort(422);
        }
    }

    /**
     * @param Request $request
     */
    public function StripeWebhooks(Request $request)
    {
        \Stripe\Stripe::setApiKey($this->getStripeSecret());

        try {
            $payload = @file_get_contents('php://input');
            $sig_header = $request->header('Stripe-Signature');
            $event = null;
            $event = \Stripe\Webhook::constructEvent(
                $payload,
                $sig_header,
                $this->getStripeEndpointSecret()
            );
        } catch (\UnexpectedValueException $e) {
            // Invalid payload

            abort(400);
        } catch (\Stripe\Exception\SignatureVerificationException $e) {
            // Invalid signature

            abort(400);
        }

        // Handle the event
        switch ($event->type) {
            case 'payment_intent.succeeded':
                $paymentIntent = $event->data->object; // contains a \Stripe\PaymentIntent
                $this->handleStripePaymentSuccessHook($paymentIntent);
                break;
            default:
                echo 'Received unknown event type ' . $event->type;
        }
    }

    /**
     * @return \Stripe\StripeClient
     */
    protected function getStripeClient()
    {
        return new \Stripe\StripeClient($this->getStripeSecret());
    }

    /**
     * @return string
     */
    protected function getStripeSecret()
    {
        return env('APP_ENV') == 'local'
            ?  env('STRIPE_TEST_SECRET')
            :  env('STRIPE_SECRET');
    }

    /**
     * @return string
     */
    protected function getStripeEndpointSecret()
    {
        return env('APP_ENV') == 'local'
            ?  env('STRIPE_ENDPOINT_TEST_SECRET')
            :  env('STRIPE_ENDPOINT_SECRET');
    }


    protected function createInvoice($user, $payment, $paymentStatus)
    {
        $creditProduct = CreditProduct::where('id', $payment->credit_product_id)->first();
        //create invoice
        $lastInvoiceID = \App\Models\Invoice::where("invoice_name", "like", "%" . now()->format('mY') . "%")->count("id");
        $newInvoiceID = $lastInvoiceID + 1;
        $InvoiceSettings = InvoiceSettings::query()->first();
        $logoPath = storage_path('app/public/logo.png');

        $seller = new Party([
            'name' => $InvoiceSettings->company_name,
            'phone' => $InvoiceSettings->company_phone,
            'address' => $InvoiceSettings->company_adress,
            'vat' => $InvoiceSettings->company_vat,
            'custom_fields' => [
                'E-Mail' => $InvoiceSettings->company_mail,
                "Web" => $InvoiceSettings->company_web
            ],
        ]);


        $customer = new Buyer([
            'name' => $user->name,
            'custom_fields' => [
                'E-Mail' => $user->email,
                'Client ID' => $user->id,
            ],
        ]);
        $item = (new InvoiceItem())
            ->title($creditProduct->description)
            ->pricePerUnit($creditProduct->price);

        $invoice = Invoice::make()
            ->template('controlpanel')
            ->name(__("Invoice"))
            ->buyer($customer)
            ->seller($seller)
            ->discountByPercent(0)
            ->taxRate(floatval($creditProduct->getTaxPercent()))
            ->shipping(0)
            ->addItem($item)
            ->status(__($paymentStatus))
            ->series(now()->format('mY'))
            ->delimiter("-")
            ->sequence($newInvoiceID)
            ->serialNumberFormat($InvoiceSettings->invoice_prefix . '{DELIMITER}{SERIES}{SEQUENCE}');

        if (file_exists($logoPath)) {
            $invoice->logo($logoPath);
        }

        //Save the invoice in "storage\app\invoice\USER_ID\YEAR"
        $invoice->filename = $invoice->getSerialNumber() . '.pdf';
        $invoice->render();
        Storage::disk("local")->put("invoice/" . $user->id . "/" . now()->format('Y') . "/" . $invoice->filename, $invoice->output);


        \App\Models\Invoice::create([
            'invoice_user' => $user->id,
            'invoice_name' => $invoice->getSerialNumber(),
            'payment_id' => $payment->payment_id,
        ]);

        //Send Invoice per Mail
        $user->notify(new InvoiceNotification($invoice, $user, $payment));
    }

    /**
     * @return JsonResponse|mixed
     * @throws Exception
     */
    public function dataTable()
    {
        $query = Payment::with('user');

        return datatables($query)
            ->editColumn('user', function (Payment $payment) {
                return $payment->user->name;
            })
            ->editColumn('price', function (Payment $payment) {
                return $payment->formatToCurrency($payment->price);
            })
            ->editColumn('tax_value', function (Payment $payment) {
                return $payment->formatToCurrency($payment->tax_value);
            })
            ->editColumn('tax_percent', function (Payment $payment) {
                return $payment->tax_percent . ' %';
            })
            ->editColumn('total_price', function (Payment $payment) {
                return $payment->formatToCurrency($payment->total_price);
            })

            ->editColumn('created_at', function (Payment $payment) {
                return $payment->created_at ? $payment->created_at->diffForHumans() : '';
            })
            ->make();
    }
}