wip

app/Filament/Company/Resources/Purchases/BillResource.php

                                     ->live(onBlur: true)
                                     ->helperText(function (Bill $record, $state) {
                                         $billCurrency = $record->currency_code;
-                                        if (! CurrencyConverter::isValidAmount($state, $billCurrency)) {
+                                        if (! CurrencyConverter::isValidAmount($state, 'USD')) {
                                             return null;
                                         }
 
-                                        $amountDue = $record->getRawOriginal('amount_due');
-                                        $amount = CurrencyConverter::convertToCents($state, $billCurrency);
+                                        $amountDue = $record->amount_due;
+                                        $amount = CurrencyConverter::convertToCents($state, 'USD');
 
                                         if ($amount <= 0) {
                                             return 'Please enter a valid positive amount';
                                         };
                                     })
                                     ->rules([
-                                        static fn (Bill $record): Closure => static function (string $attribute, $value, Closure $fail) use ($record) {
-                                            if (! CurrencyConverter::isValidAmount($value, $record->currency_code)) {
+                                        static fn (): Closure => static function (string $attribute, $value, Closure $fail) {
+                                            if (! CurrencyConverter::isValidAmount($value, 'USD')) {
                                                 $fail('Please enter a valid amount');
                                             }
                                         },

app/Filament/Company/Resources/Purchases/BillResource/RelationManagers/PaymentsRelationManager.php

                                     return null;
                                 }
 
-                                $amountDue = $ownerRecord->getRawOriginal('amount_due');
+                                $amountDue = $ownerRecord->amount_due;
 
                                 $amount = CurrencyConverter::convertToCents($state, 'USD');
 
                                     return 'Please enter a valid positive amount';
                                 }
 
-                                $currentPaymentAmount = $record?->getRawOriginal('amount') ?? 0;
+                                $currentPaymentAmount = $record?->amount ?? 0;
 
                                 $newAmountDue = $amountDue - $amount + $currentPaymentAmount;
 
                                 };
                             })
                             ->rules([
-                                static fn (RelationManager $livewire): Closure => static function (string $attribute, $value, Closure $fail) use ($livewire) {
-                                    /** @var Bill $bill */
-                                    $bill = $livewire->getOwnerRecord();
-
-                                    if (! CurrencyConverter::isValidAmount($value, $bill->currency_code)) {
+                                static fn (): Closure => static function (string $attribute, $value, Closure $fail) {
+                                    if (! CurrencyConverter::isValidAmount($value, 'USD')) {
                                         $fail('Please enter a valid amount');
                                     }
                                 },

app/Filament/Company/Resources/Sales/InvoiceResource.php

                                     ->live(onBlur: true)
                                     ->helperText(function (Invoice $record, $state) {
                                         $invoiceCurrency = $record->currency_code;
-                                        if (! CurrencyConverter::isValidAmount($state, $invoiceCurrency)) {
+                                        if (! CurrencyConverter::isValidAmount($state, 'USD')) {
                                             return null;
                                         }
 
-                                        $amountDue = $record->getRawOriginal('amount_due');
+                                        $amountDue = $record->amount_due;
 
-                                        $amount = CurrencyConverter::convertToCents($state, $invoiceCurrency);
+                                        $amount = CurrencyConverter::convertToCents($state, 'USD');
 
                                         if ($amount <= 0) {
                                             return 'Please enter a valid positive amount';
                                         };
                                     })
                                     ->rules([
-                                        static fn (Invoice $record): Closure => static function (string $attribute, $value, Closure $fail) use ($record) {
-                                            if (! CurrencyConverter::isValidAmount($value, $record->currency_code)) {
+                                        static fn (): Closure => static function (string $attribute, $value, Closure $fail) {
+                                            if (! CurrencyConverter::isValidAmount($value, 'USD')) {
                                                 $fail('Please enter a valid amount');
                                             }
                                         },

app/Filament/Company/Resources/Sales/InvoiceResource/RelationManagers/PaymentsRelationManager.php

                                     return null;
                                 }
 
-                                $amountDue = $ownerRecord->getRawOriginal('amount_due');
+                                $amountDue = $ownerRecord->amount_due;
 
                                 $amount = CurrencyConverter::convertToCents($state, 'USD');