App\Http\Controllers\ClientPortalController::view PHP Method

    public function view($invitationKey)
    {
        if (!($invitation = $this->invoiceRepo->findInvoiceByInvitation($invitationKey))) {
            return $this->returnError();
        }
        $invoice = $invitation->invoice;
        $client = $invoice->client;
        $account = $invoice->account;
        if (!$account->checkSubdomain(Request::server('HTTP_HOST'))) {
            return response()->view('error', ['error' => trans('texts.invoice_not_found'), 'hideHeader' => true, 'clientViewCSS' => $account->clientViewCSS(), 'clientFontUrl' => $account->getFontsUrl()]);
        }
        if (!Input::has('phantomjs') && !Input::has('silent') && !Session::has($invitationKey) && (!Auth::check() || Auth::user()->account_id != $invoice->account_id)) {
            if ($invoice->isType(INVOICE_TYPE_QUOTE)) {
                event(new QuoteInvitationWasViewed($invoice, $invitation));
            } else {
                event(new InvoiceInvitationWasViewed($invoice, $invitation));
            }
        }
        Session::put($invitationKey, true);
        // track this invitation has been seen
        Session::put('contact_key', $invitation->contact->contact_key);
        // track current contact
        $account->loadLocalizationSettings($client);
        $invoice->invoice_date = Utils::fromSqlDate($invoice->invoice_date);
        $invoice->due_date = Utils::fromSqlDate($invoice->due_date);
        $invoice->features = ['customize_invoice_design' => $account->hasFeature(FEATURE_CUSTOMIZE_INVOICE_DESIGN), 'remove_created_by' => $account->hasFeature(FEATURE_REMOVE_CREATED_BY), 'invoice_settings' => $account->hasFeature(FEATURE_INVOICE_SETTINGS)];
        $invoice->invoice_fonts = $account->getFontsData();
        if ($invoice->invoice_design_id == CUSTOM_DESIGN) {
            $invoice->invoice_design->javascript = $account->custom_design;
        } else {
            $invoice->invoice_design->javascript = $invoice->invoice_design->pdfmake;
        }
        $contact = $invitation->contact;
        $contact->setVisible(['first_name', 'last_name', 'email', 'phone']);
        $data = [];
        $paymentTypes = $this->getPaymentTypes($account, $client, $invitation);
        $paymentURL = '';
        if (count($paymentTypes) == 1) {
            $paymentURL = $paymentTypes[0]['url'];
            if ($paymentTypes[0]['gatewayTypeId'] == GATEWAY_TYPE_CUSTOM) {
                // do nothing
            } elseif (!$account->isGatewayConfigured(GATEWAY_PAYPAL_EXPRESS)) {
                $paymentURL = URL::to($paymentURL);
            }
        }
        if ($wepayGateway = $account->getGatewayConfig(GATEWAY_WEPAY)) {
            $data['enableWePayACH'] = $wepayGateway->getAchEnabled();
        }
        $showApprove = $invoice->quote_invoice_id ? false : true;
        if ($invoice->due_date) {
            $showApprove = time() < strtotime($invoice->due_date);
        }
        if ($invoice->invoice_status_id >= INVOICE_STATUS_APPROVED) {
            $showApprove = false;
        }
        $data += ['account' => $account, 'showApprove' => $showApprove, 'showBreadcrumbs' => false, 'clientFontUrl' => $account->getFontsUrl(), 'invoice' => $invoice->hidePrivateFields(), 'invitation' => $invitation, 'invoiceLabels' => $account->getInvoiceLabels(), 'contact' => $contact, 'paymentTypes' => $paymentTypes, 'paymentURL' => $paymentURL, 'phantomjs' => Input::has('phantomjs')];
        if ($paymentDriver = $account->paymentDriver($invitation, GATEWAY_TYPE_CREDIT_CARD)) {
            $data += ['transactionToken' => $paymentDriver->createTransactionToken(), 'partialView' => $paymentDriver->partialView(), 'accountGateway' => $paymentDriver->accountGateway];
        }
        if ($accountGateway = $account->getGatewayByType(GATEWAY_TYPE_CUSTOM)) {
            $data += ['customGatewayName' => $accountGateway->getConfigField('name'), 'customGatewayText' => $accountGateway->getConfigField('text')];
        }
        if ($account->hasFeature(FEATURE_DOCUMENTS) && $this->canCreateZip()) {
            $zipDocs = $this->getInvoiceZipDocuments($invoice, $size);
            if (count($zipDocs) > 1) {
                $data['documentsZipURL'] = URL::to("client/documents/{$invitation->invitation_key}");
                $data['documentsZipSize'] = $size;
            }
        }
        return View::make('invoices.view', $data);
    }