<?php

namespace App\Http\Controllers\Admin;

use App\Events\UserUpdateCreditsEvent;
use App\Http\Controllers\Controller;
use App\Models\PartnerDiscount;
use App\Models\Payment;
use App\Models\User;
use App\Models\ShopProduct;
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\DB;
use PayPalCheckoutSdk\Core\PayPalHttpClient;
use PayPalCheckoutSdk\Core\ProductionEnvironment;
use PayPalCheckoutSdk\Core\SandboxEnvironment;
use PayPalHttp\HttpException;
use Stripe\Stripe;
use App\Helpers\ExtensionHelper;


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  ShopProduct  $shopProduct
     * @return Application|Factory|View
     */
    public function checkOut(ShopProduct $shopProduct)
    {
        // get all payment gateway extensions
        $extensions = glob(app_path() . '/Extensions/PaymentGateways/*', GLOB_ONLYDIR);

        // build a paymentgateways array that contains the routes for the payment gateways and the image path for the payment gateway which lays in public/images/Extensions/PaymentGateways with the extensionname in lowercase
        $paymentGateways = [];
        foreach ($extensions as $extension) {
            $extensionName = basename($extension);
            $config = ExtensionHelper::getExtensionConfig($extensionName, 'PaymentGateways');
            if ($config) {
                $payment = new \stdClass();
                $payment->name = $config['name'];
                $payment->image = asset('images/Extensions/PaymentGateways/' . strtolower($extensionName) . '_logo.png');
                $paymentGateways[] = $payment;
            }
        }
            
    
        return view('store.checkout')->with([
            'product' => $shopProduct,
            'discountpercent' => PartnerDiscount::getDiscount(),
            'discountvalue' => PartnerDiscount::getDiscount() * $shopProduct->price / 100,
            'discountedprice' => $shopProduct->getPriceAfterDiscount(),
            'taxvalue' => $shopProduct->getTaxValue(),
            'taxpercent' => $shopProduct->getTaxPercent(),
            'total' => $shopProduct->getTotalPrice(),
            'paymentGateways'   => $paymentGateways,
        ]);
    }

    /**
     * @param  Request  $request
     * @param  ShopProduct  $shopProduct
     * @return RedirectResponse
     */
    public function FreePay(ShopProduct $shopProduct)
    {
        //dd($shopProduct);
        //check if the product is really free or the discount is 100%
        if($shopProduct->getTotalPrice()>0) return redirect()->route('home')->with('error', __('An error ocured. Please try again.'));
        
        //give product
        /** @var User $user */
        $user = Auth::user();

        //not updating server limit

        //update User with bought item
        if ($shopProduct->type=="Credits") {
            $user->increment('credits', $shopProduct->quantity);
        }elseif ($shopProduct->type=="Server slots"){
            $user->increment('server_limit', $shopProduct->quantity);
        }

        //skipped the referral commission, because the user did not pay anything.
        
        //not giving client role

        //store payment
        $payment = Payment::create([
            'user_id' => $user->id,
            'payment_id' => uniqid(),
            'payment_method' => 'free',
            'type' => $shopProduct->type,
            'status' => 'paid',
            'amount' => $shopProduct->quantity,
            'price' => $shopProduct->price - ($shopProduct->price*PartnerDiscount::getDiscount()/100),
            'tax_value' => $shopProduct->getTaxValue(),
            'tax_percent' => $shopProduct->getTaxPercent(),
            'total_price' => $shopProduct->getTotalPrice(),
            'currency_code' => $shopProduct->currency_code,
            'shop_item_product_id' => $shopProduct->id,
        ]);

        event(new UserUpdateCreditsEvent($user));

        //not sending an invoice

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

   public function pay(Request $request)
   {
        $product = ShopProduct::find($request->product_id);
        $paymentGateway = $request->payment_method;

        return redirect()->route('payment.' . $paymentGateway . 'Pay', ['shopProduct' => $product->id]);
    }

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

    /**
     * @param  Request  $request
     * @param  ShopProduct  $shopProduct
     * @return RedirectResponse
     */
    public function StripePay(Request $request, ShopProduct $shopProduct)
    {
        if(!$this->checkAmount($shopProduct->getTotalPrice(), strtoupper($shopProduct->currency_code), "stripe")) return redirect()->route('home')->with('error', __('The product you chose can´t be purchased with this payment method. The total amount is too small. Please buy a bigger amount or try a different payment method.'));
        $stripeClient = $this->getStripeClient();

        $request = $stripeClient->checkout->sessions->create([
            'line_items' => [
                [
                    'price_data' => [
                        'currency' => $shopProduct->currency_code,
                        'product_data' => [
                            'name' => $shopProduct->display.(PartnerDiscount::getDiscount() ? (' ('.__('Discount').' '.PartnerDiscount::getDiscount().'%)') : ''),
                            'description' => $shopProduct->description,
                        ],
                        'unit_amount_decimal' => round($shopProduct->getPriceAfterDiscount() * 100, 2),
                    ],
                    'quantity' => 1,
                ],
                [
                    'price_data' => [
                        'currency' => $shopProduct->currency_code,
                        'product_data' => [
                            'name' => __('Tax'),
                            'description' => $shopProduct->getTaxPercent().'%',
                        ],
                        'unit_amount_decimal' => round($shopProduct->getTaxValue(), 2) * 100,
                    ],
                    'quantity' => 1,
                ],
            ],

            'mode' => 'payment',
            'payment_method_types' => str_getcsv(config('SETTINGS::PAYMENTS:STRIPE:METHODS')),
            'success_url' => route('payment.StripeSuccess', ['product' => $shopProduct->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 ShopProduct $shopProduct */
        $shopProduct = ShopProduct::findOrFail($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 server limit
                if (config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE') !== 0) {
                    if ($user->server_limit < config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE')) {
                        $user->update(['server_limit' => config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE')]);
                    }
                }

                //update User with bought item
                if ($shopProduct->type == 'Credits') {
                    $user->increment('credits', $shopProduct->quantity);
                } elseif ($shopProduct->type == 'Server slots') {
                    $user->increment('server_limit', $shopProduct->quantity);
                }

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

                    if ((config('SETTINGS::REFERRAL:MODE') == 'commission' || config('SETTINGS::REFERRAL:MODE') == 'both') && $shopProduct->type == 'Credits') {
                        if ($ref_user = DB::table('user_referrals')->where('registered_user_id', '=', $user->id)->first()) {
                            $ref_user = User::findOrFail($ref_user->referral_id);
                            $increment = number_format($shopProduct->quantity / 100 * config('SETTINGS::REFERRAL:PERCENTAGE'), 0, '', '');
                            $ref_user->increment('credits', $increment);

                            //LOGS REFERRALS IN THE ACTIVITY LOG
                            activity()
                                ->performedOn($user)
                                ->causedBy($ref_user)
                                ->log('gained '.$increment.' '.config('SETTINGS::SYSTEM:CREDITS_DISPLAY_NAME').' for commission-referral of '.$user->name.' (ID:'.$user->id.')');
                        }
                    }
                }

                //store paid payment
                $payment = Payment::create([
                    'user_id' => $user->id,
                    'payment_id' => $paymentSession->payment_intent,
                    'payment_method' => 'stripe',
                    'type' => $shopProduct->type,
                    'status' => 'paid',
                    'amount' => $shopProduct->quantity,
                    'price' => $shopProduct->price - ($shopProduct->price * PartnerDiscount::getDiscount() / 100),
                    'tax_value' => $shopProduct->getTaxValue(),
                    'total_price' => $shopProduct->getTotalPrice(),
                    'tax_percent' => $shopProduct->getTaxPercent(),
                    'currency_code' => $shopProduct->currency_code,
                    'shop_item_product_id' => $shopProduct->id,
                ]);

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

                event(new UserUpdateCreditsEvent($user));

                //only create invoice if SETTINGS::INVOICE:ENABLED is true
                if (config('SETTINGS::INVOICE:ENABLED') == 'true') {
                    $this->createInvoice($user, $payment, 'paid', $shopProduct->currency_code);
                }

                //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' => $shopProduct->type,
                        'status' => 'processing',
                        'amount' => $shopProduct->quantity,
                        'price' => $shopProduct->price,
                        'tax_value' => $shopProduct->getTaxValue(),
                        'total_price' => $shopProduct->getTotalPrice(),
                        'tax_percent' => $shopProduct->getTaxPercent(),
                        'currency_code' => $shopProduct->currency_code,
                        'shop_item_product_id' => $shopProduct->id,
                    ]);

                    //only create invoice if SETTINGS::INVOICE:ENABLED is true
                    if (config('SETTINGS::INVOICE:ENABLED') == 'true') {
                        $this->createInvoice($user, $payment, 'paid', $shopProduct->currency_code);
                    }

                    //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') {

                //update server limit
                if (config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE') !== 0) {
                    if ($user->server_limit < config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE')) {
                        $user->update(['server_limit' => config('SETTINGS::USER:SERVER_LIMIT_AFTER_IRL_PURCHASE')]);
                    }
                }
                //update User with bought item
                if ($shopProduct->type == 'Credits') {
                    $user->increment('credits', $shopProduct->quantity);
                } elseif ($shopProduct->type == 'Server slots') {
                    $user->increment('server_limit', $shopProduct->quantity);
                }

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

                    if ((config('SETTINGS::REFERRAL:MODE') == 'commission' || config('SETTINGS::REFERRAL:MODE') == 'both') && $shopProduct->type == 'Credits') {
                        if ($ref_user = DB::table('user_referrals')->where('registered_user_id', '=', $user->id)->first()) {
                            $ref_user = User::findOrFail($ref_user->referral_id);
                            $increment = number_format($shopProduct->quantity / 100 * config('SETTINGS::REFERRAL:PERCENTAGE'), 0, '', '');
                            $ref_user->increment('credits', $increment);

                            //LOGS REFERRALS IN THE ACTIVITY LOG
                            activity()
                                ->performedOn($user)
                                ->causedBy($ref_user)
                                ->log('gained '.$increment.' '.config('SETTINGS::SYSTEM:CREDITS_DISPLAY_NAME').' for commission-referral of '.$user->name.' (ID:'.$user->id.')');
                        }
                    }
                }

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

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

                //only create invoice if SETTINGS::INVOICE:ENABLED is true
                if (config('SETTINGS::INVOICE:ENABLED') == 'true') {
                    $this->createInvoice($user, $payment, 'paid', strtoupper($paymentIntent->currency));
                }
            }
        } 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'
            ? config('SETTINGS::PAYMENTS:STRIPE:TEST_SECRET')
            : config('SETTINGS::PAYMENTS:STRIPE:SECRET');
    }

    /**
     * @return string
     */
    protected function getStripeEndpointSecret()
    {
        return env('APP_ENV') == 'local'
            ? config('SETTINGS::PAYMENTS:STRIPE:ENDPOINT_TEST_SECRET')
            : config('SETTINGS::PAYMENTS:STRIPE:ENDPOINT_SECRET');
    }

    public function checkAmount($amount, $currencyCode, $payment_method)
    {
        $minimums = [
            "USD" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "AED" => [
                "paypal" => 0,
                "stripe" => 2
            ],
            "AUD" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "BGN" => [
                "paypal" => 0,
                "stripe" => 1
            ],
            "BRL" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "CAD" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "CHF" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "CZK" => [
                "paypal" => 0,
                "stripe" => 15
            ],
            "DKK" => [
                "paypal" => 0,
                "stripe" => 2.5
            ],
            "EUR" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "GBP" => [
                "paypal" => 0,
                "stripe" => 0.3
            ],
            "HKD" => [
                "paypal" => 0,
                "stripe" => 4
            ],
            "HRK" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "HUF" => [
                "paypal" => 0,
                "stripe" => 175
            ],
            "INR" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "JPY" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "MXN" => [
                "paypal" => 0,
                "stripe" => 10
            ],
            "MYR" => [
                "paypal" => 0,
                "stripe" => 2
            ],
            "NOK" => [
                "paypal" => 0,
                "stripe" => 3
            ],
            "NZD" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "PLN" => [
                "paypal" => 0,
                "stripe" => 2
            ],
            "RON" => [
                "paypal" => 0,
                "stripe" => 2
            ],
            "SEK" => [
                "paypal" => 0,
                "stripe" => 3
            ],
            "SGD" => [
                "paypal" => 0,
                "stripe" => 0.5
            ],
            "THB" => [
                "paypal" => 0,
                "stripe" => 10
            ]
        ];
        return $amount >= $minimums[$currencyCode][$payment_method];
    }


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

        return datatables($query)

            ->addColumn('user', function (Payment $payment) {
                return 
                ($payment->user)?'<a href="'.route('admin.users.show', $payment->user->id).'">'.$payment->user->name.'</a>':__('Unknown user');

            })
            ->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 ['display' => $payment->created_at ? $payment->created_at->diffForHumans() : '',
                        'raw' => $payment->created_at ? strtotime($payment->created_at) : ''];
            })
            ->addColumn('actions', function (Payment $payment) {
                return '<a data-content="'.__('Download').'" data-toggle="popover" data-trigger="hover" data-placement="top"  href="'.route('admin.invoices.downloadSingleInvoice', 'id='.$payment->payment_id).'" class="btn btn-sm text-white btn-info mr-1"><i class="fas fa-file-download"></i></a>';
            })
            ->rawColumns(['actions', 'user'])
            ->make(true);
    }
}