invoiceninja/app/Http/Controllers/ClientPortal/PaymentController.php

<?php

/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Http\Controllers\ClientPortal;

use App\Filters\PaymentFilters;
use App\Http\Controllers\Controller;
use App\Jobs\Invoice\InjectSignature;
use App\Models\CompanyGateway;
use App\Models\Invoice;
use App\Models\Payment;
use App\Models\PaymentHash;
use App\Utils\Number;
use App\Utils\Traits\MakesDates;
use App\Utils\Traits\MakesHash;
use Cache;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;
use Yajra\DataTables\Facades\DataTables;

/**
 * Class PaymentController
 * @package App\Http\Controllers\ClientPortal\PaymentController
 */

class PaymentController extends Controller
{
    use MakesHash;
    use MakesDates;

    /**
     * Show the list of payments.
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function index()
    {
        return $this->render('payments.index');
    }

    /**
     * Display the specified resource.
     *
     * @param Request $request
     * @param Payment $payment
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function show(Request $request, Payment $payment)
    {
        $payment->load('invoices');

        return $this->render('payments.show', [
            'payment' => $payment,
        ]);
    }

    /**
     * Presents the payment screen for a given
     * gateway and payment method.
     * The request will also contain the amount
     * and invoice ids for reference.
     *
     * @return \Illuminate\Http\RedirectResponse|mixed
     */
    public function process()
    {
        //REFACTOR - Here the request will contain an array of invoices and the amount to be charged for the invoice
        //REFACTOR - At this point, we will also need to modify the invoice to include a line item for a gateway fee if applicable
        //           This is tagged with a type_id of 3 which is for a pending gateway fee.
        //REFACTOR - In order to preserve state we should save the array of invoices and amounts and store it in db/cache and use a HASH
        //           to rehydrate these values in the payment response.
// dd(request()->all());

        $gateway = CompanyGateway::find(request()->input('company_gateway_id'));
        /*find invoices*/
        $payable_invoices = request()->payable_invoices;
        $invoices = Invoice::whereIn('id', $this->transformKeys(array_column($payable_invoices, 'invoice_id')))->get();

        /*filter only payable invoices*/
        $invoices = $invoices->filter(function ($invoice) {
            return $invoice->isPayable();
        });


        /*return early if no invoices*/
        if ($invoices->count() == 0) {
            return redirect()
                ->route('client.invoices.index')
                ->with(['warning' => 'No payable invoices selected.']);
        }

        /*iterate through invoices and add gateway fees and other payment metadata*/
        
        foreach($payable_invoices as $key => $payable_invoice)
        {

            $payable_invoices[$key]['amount'] = Number::parseFloat($payable_invoice['amount']);
            $payable_invoice['amount'] = $payable_invoices[$key]['amount'];

            $invoice = $invoices->first(function ($inv) use($payable_invoice) {
                            return $payable_invoice['invoice_id'] == $inv->hashed_id;
                        });

            // if($invoice)
            //     $invoice->service()->addGatewayFee($gateway, $payable_invoice['amount'])->save();

            /*Update the payable amount to include the fee*/
            // $gateway_fee = $gateway->calcGatewayFee($payable_invoice['amount']);

            // $payable_invoices[$key]['amount_with_fee'] = $payable_invoice['amount'] + $gateway_fee;
            // $payable_invoices[$key]['fee'] = $gateway_fee;
            $payable_invoices[$key]['due_date'] = $this->formatDate($invoice->due_date, $invoice->client->date_format());
            $payable_invoices[$key]['invoice_number'] = $invoice->number;

            if(isset($invoice->po_number))
                $additional_info = $invoice->po_number;
            elseif(isset($invoice->public_notes))
                $additional_info = $invoice->public_notes;
            else
                $additional_info = $invoice->date;

            $payable_invoices[$key]['additional_info'] = $additional_info;

        }

        if ((bool) request()->signature) {
            $invoices->each(function ($invoice) {
                InjectSignature::dispatch($invoice, request()->signature);
            });
        }

        $payment_methods = auth()->user()->client->getPaymentMethods(array_sum(array_column($payable_invoices, 'amount_with_fee')));
        $payment_method_id = request()->input('payment_method_id');

        $payment_hash = new PaymentHash;
        $payment_hash->hash = Str::random(128);
        $payment_hash->data = $payable_invoices;
        $payment_hash->save();

        $invoice_totals = array_sum(array_column($payable_invoices,'amount'));
        $fee_totals = $gateway->calcGatewayFee($invoice_totals);

        $totals = [
            'invoice_totals' => $invoice_totals,
            'fee_totals' => $fee_totals,
            'amount_with_fee' => $invoice_totals + $fee_totals,
        ];

        $data = [
            'payment_hash' => $payment_hash->hash,
            'total' => $totals,
            'invoices' => $payable_invoices,
            'token' => auth()->user()->client->gateway_token($gateway->id, $payment_method_id),
            'payment_method_id' => $payment_method_id,
        ];

        return $gateway
            ->driver(auth()->user()->client)
            ->setPaymentMethod($payment_method_id)
            ->processPaymentView($data);
    }

    public function response(Request $request)
    {
        $gateway = CompanyGateway::find($request->input('company_gateway_id'));

        //REFACTOR - Entry point for the gateway response - we don't need to do anything at this point.
        //
        // - Inside each gateway driver, we should use have a generic code path (in BaseDriver.php)for successful/failed payment
        // 
        //   Success workflow
        //   
        // - Rehydrate the hash and iterate through the invoices and update the balances
        // - Update the type_id of the gateway fee to type_id 4
        // - Link invoices to payment
        // 
        //   Failure workflow
        // 
        // - Rehydrate hash, iterate through invoices and remove type_id 3's
        // - Recalcuate invoice totals
        
        return $gateway
            ->driver(auth()->user()->client)
            ->setPaymentMethod($request->input('payment_method_id'))
            ->processPaymentResponse($request);
    }
}