App\Http\Controllers\InvoiceController::getViewModel PHP Method

    private static function getViewModel($invoice)
    {
        $recurringHelp = '';
        $recurringDueDateHelp = '';
        $recurringDueDates = [];
        foreach (preg_split("/((\r?\n)|(\r\n?))/", trans('texts.recurring_help')) as $line) {
            $parts = explode('=>', $line);
            if (count($parts) > 1) {
                $line = $parts[0] . ' => ' . Utils::processVariables($parts[0]);
                $recurringHelp .= '<li>' . strip_tags($line) . '</li>';
            } else {
                $recurringHelp .= $line;
            }
        }
        foreach (preg_split("/((\r?\n)|(\r\n?))/", trans('texts.recurring_due_date_help')) as $line) {
            $parts = explode('=>', $line);
            if (count($parts) > 1) {
                $line = $parts[0] . ' => ' . Utils::processVariables($parts[0]);
                $recurringDueDateHelp .= '<li>' . strip_tags($line) . '</li>';
            } else {
                $recurringDueDateHelp .= $line;
            }
        }
        // Create due date options
        $recurringDueDates = [trans('texts.use_client_terms') => ['value' => '', 'class' => 'monthly weekly']];
        $ends = ['th', 'st', 'nd', 'rd', 'th', 'th', 'th', 'th', 'th', 'th'];
        for ($i = 1; $i < 31; $i++) {
            if ($i >= 11 && $i <= 13) {
                $ordinal = $i . 'th';
            } else {
                $ordinal = $i . $ends[$i % 10];
            }
            $dayStr = str_pad($i, 2, '0', STR_PAD_LEFT);
            $str = trans('texts.day_of_month', ['ordinal' => $ordinal]);
            $recurringDueDates[$str] = ['value' => "1998-01-{$dayStr}", 'data-num' => $i, 'class' => 'monthly'];
        }
        $recurringDueDates[trans('texts.last_day_of_month')] = ['value' => '1998-01-31', 'data-num' => 31, 'class' => 'monthly'];
        $daysOfWeek = [trans('texts.sunday'), trans('texts.monday'), trans('texts.tuesday'), trans('texts.wednesday'), trans('texts.thursday'), trans('texts.friday'), trans('texts.saturday')];
        foreach (['1st', '2nd', '3rd', '4th'] as $i => $ordinal) {
            foreach ($daysOfWeek as $j => $dayOfWeek) {
                $str = trans('texts.day_of_week_after', ['ordinal' => $ordinal, 'day' => $dayOfWeek]);
                $day = $i * 7 + $j + 1;
                $dayStr = str_pad($day, 2, '0', STR_PAD_LEFT);
                $recurringDueDates[$str] = ['value' => "1998-02-{$dayStr}", 'data-num' => $day, 'class' => 'weekly'];
            }
        }
        // Tax rate $options
        $account = Auth::user()->account;
        $rates = TaxRate::scope()->orderBy('name')->get();
        $options = [];
        $defaultTax = false;
        foreach ($rates as $rate) {
            $options[$rate->rate . ' ' . $rate->name] = $rate->name . ' ' . ($rate->rate + 0) . '%';
            // load default invoice tax
            if ($rate->id == $account->default_tax_rate_id) {
                $defaultTax = $rate;
            }
        }
        // Check for any taxes which have been deleted
        if ($invoice->exists) {
            foreach ($invoice->getTaxes() as $key => $rate) {
                if (isset($options[$key])) {
                    continue;
                }
                $options[$key] = $rate['name'] . ' ' . $rate['rate'] . '%';
            }
        }
        return ['data' => Input::old('data'), 'account' => Auth::user()->account->load('country'), 'products' => Product::scope()->with('default_tax_rate')->orderBy('product_key')->get(), 'taxRateOptions' => $options, 'defaultTax' => $defaultTax, 'currencies' => Cache::get('currencies'), 'sizes' => Cache::get('sizes'), 'paymentTerms' => Cache::get('paymentTerms'), 'invoiceDesigns' => InvoiceDesign::getDesigns(), 'invoiceFonts' => Cache::get('fonts'), 'frequencies' => [1 => trans('texts.freq_weekly'), 2 => trans('texts.freq_two_weeks'), 3 => trans('texts.freq_four_weeks'), 4 => trans('texts.freq_monthly'), 5 => trans('texts.freq_three_months'), 6 => trans('texts.freq_six_months'), 7 => trans('texts.freq_annually')], 'recurringDueDates' => $recurringDueDates, 'recurringHelp' => $recurringHelp, 'recurringDueDateHelp' => $recurringDueDateHelp, 'invoiceLabels' => Auth::user()->account->getInvoiceLabels(), 'tasks' => Session::get('tasks') ? json_encode(Session::get('tasks')) : null, 'expenseCurrencyId' => Session::get('expenseCurrencyId') ?: null, 'expenses' => Session::get('expenses') ? Expense::scope(Session::get('expenses'))->with('documents', 'expense_category')->get() : []];
    }