WIP: integration with ledger

frontend/pshared/lib/models/payment/source.dart

@@ -0,0 +1,31 @@
+import 'package:pshared/models/ledger/account.dart';
+import 'package:pshared/models/payment/wallet.dart';
+
+
+enum PaymentSourceType { wallet, ledger }
+
+class PaymentSource {
+  final PaymentSourceType type;
+  final Wallet? wallet;
+  final LedgerAccount? ledgerAccount;
+
+  const PaymentSource._({required this.type, this.wallet, this.ledgerAccount});
+
+  const PaymentSource.wallet(Wallet wallet)
+    : this._(type: PaymentSourceType.wallet, wallet: wallet);
+
+  const PaymentSource.ledger(LedgerAccount account)
+    : this._(type: PaymentSourceType.ledger, ledgerAccount: account);
+
+  String get id => switch (type) {
+    PaymentSourceType.wallet => wallet!.id,
+    PaymentSourceType.ledger => ledgerAccount!.ledgerAccountRef,
+  };
+
+  String get key => '${type.name}:$id';
+
+  String get name => switch (type) {
+    PaymentSourceType.wallet => wallet!.name,
+    PaymentSourceType.ledger => ledgerAccount!.name,
+  };
+}