Show grand total for bills/invoices in "Amount" field in "Add Payment" modal

app/Http/Controllers/Purchases/Bills.php

@@ -13,6 +13,7 @@ use App\Jobs\Purchase\DeleteBill;
 use App\Jobs\Purchase\DuplicateBill;
 use App\Jobs\Purchase\UpdateBill;
 use App\Models\Banking\Account;
+use App\Models\Banking\Transaction;
 use App\Models\Common\Contact;
 use App\Models\Common\Item;
 use App\Models\Purchase\Bill;
@@ -74,6 +75,21 @@ class Bills extends Controller
 
         $date_format = $this->getCompanyDateFormat();
 
+        $paid = $this->getPaidAmount($bill);
+
+        // Get Bill Totals
+        foreach ($bill->totals as $bill_total) {
+            $bill->{$bill_total->code} = $bill_total->amount;
+        }
+
+        $total = money($bill->total, $currency->code, true)->format();
+
+        $bill->grand_total = money($total, $currency->code)->getAmount();
+
+        if (!empty($paid)) {
+            $bill->grand_total = round($bill->total - $paid, $currency->precision) ;
+        }
+
         return view('purchases.bills.show', compact('bill', 'accounts', 'currencies', 'currency', 'account_currency_code', 'vendors', 'categories', 'payment_methods', 'date_format'));
     }
 
@@ -379,4 +395,44 @@ class Bills extends Controller
 
         return $bill;
     }
+
+    protected function getPaidAmount($bill)
+    {
+        $paid = 0;
+
+        // Get Bill Transactions
+        if (!$bill->transactions->count()) {
+            return $paid;
+        }
+
+        $currencies = Currency::enabled()->pluck('rate', 'code')->toArray();
+
+        foreach ($bill->transactions as $item) {
+            $default_amount = (double) $item->amount;
+
+            if ($bill->currency_code == $item->currency_code) {
+                $amount = $default_amount;
+            } else {
+                $default_amount_model = new Transaction();
+                $default_amount_model->default_currency_code = $bill->currency_code;
+                $default_amount_model->amount = $default_amount;
+                $default_amount_model->currency_code = $item->currency_code;
+                $default_amount_model->currency_rate = $currencies[$item->currency_code];
+
+                $default_amount = (double) $default_amount_model->getDivideConvertedAmount();
+
+                $convert_amount_model = new Transaction();
+                $convert_amount_model->default_currency_code = $item->currency_code;
+                $convert_amount_model->amount = $default_amount;
+                $convert_amount_model->currency_code = $bill->currency_code;
+                $convert_amount_model->currency_rate = $currencies[$bill->currency_code];
+
+                $amount = (double) $convert_amount_model->getAmountConvertedFromCustomDefault();
+            }
+
+            $paid += $amount;
+        }
+
+        return $paid;
+    }
 }

app/Http/Controllers/Sales/Invoices.php

@@ -13,6 +13,7 @@ use App\Jobs\Sale\DeleteInvoice;
 use App\Jobs\Sale\DuplicateInvoice;
 use App\Jobs\Sale\UpdateInvoice;
 use App\Models\Banking\Account;
+use App\Models\Banking\Transaction;
 use App\Models\Common\Contact;
 use App\Models\Common\Item;
 use App\Models\Sale\Invoice;
@@ -77,6 +78,21 @@ class Invoices extends Controller
 
         $date_format = $this->getCompanyDateFormat();
 
+        $paid = $this->getPaidAmount($invoice);
+
+        // Get Invoice Totals
+        foreach ($invoice->totals as $invoice_total) {
+            $invoice->{$invoice_total->code} = $invoice_total->amount;
+        }
+
+        $total = money($invoice->total, $currency->code, true)->format();
+
+        $invoice->grand_total = money($total, $currency->code)->getAmount();
+
+        if (!empty($paid)) {
+            $invoice->grand_total = round($invoice->total - $paid, $currency->precision);
+        }
+
         return view('sales.invoices.show', compact('invoice', 'accounts', 'currencies', 'currency', 'account_currency_code', 'customers', 'categories', 'payment_methods', 'signed_url', 'date_format'));
     }
 
@@ -448,4 +464,44 @@ class Invoices extends Controller
 
         return $invoice;
     }
+
+    protected function getPaidAmount($invoice)
+    {
+        $paid = 0;
+
+        // Get invoice transactions
+        if (!$invoice->transactions->count()) {
+            return $paid;
+        }
+
+        $currencies = Currency::enabled()->pluck('rate', 'code')->toArray();
+
+        foreach ($invoice->transactions as $item) {
+            $default_amount = $item->amount;
+
+            if ($invoice->currency_code == $item->currency_code) {
+                $amount = (double) $default_amount;
+            } else {
+                $default_amount_model = new Transaction();
+                $default_amount_model->default_currency_code = $invoice->currency_code;
+                $default_amount_model->amount = $default_amount;
+                $default_amount_model->currency_code = $item->currency_code;
+                $default_amount_model->currency_rate = $currencies[$item->currency_code];
+
+                $default_amount = (double) $default_amount_model->getDivideConvertedAmount();
+
+                $convert_amount_model = new Transaction();
+                $convert_amount_model->default_currency_code = $item->currency_code;
+                $convert_amount_model->amount = $default_amount;
+                $convert_amount_model->currency_code = $invoice->currency_code;
+                $convert_amount_model->currency_rate = $currencies[$invoice->currency_code];
+
+                $amount = (double) $convert_amount_model->getAmountConvertedFromCustomDefault();
+            }
+
+            $paid += $amount;
+        }
+
+        return $paid;
+    }
 }

resources/assets/js/views/purchases/bills.js

@@ -206,7 +206,6 @@ const app = new Vue({
             this.transaction_form.paid_at = form.paid_at;
             this.transaction_form.account_id = form.account_id;
             this.transaction_form.payment_method = form.payment_method;
-            this.transaction_form.amount = form.amount;
         },
 
         addPayment() {

resources/assets/js/views/sales/invoices.js

@@ -206,7 +206,6 @@ const app = new Vue({
             this.transaction_form.paid_at = form.paid_at;
             this.transaction_form.account_id = form.account_id;
             this.transaction_form.payment_method = form.payment_method;
-            this.transaction_form.amount = form.amount;
         },
 
         addPayment() {