feat: add get invoice by hash usecase

core/api/src/app/wallets/get-invoice-for-wallet-by-hash.ts

@@ -0,0 +1,26 @@
+import { CouldNotFindWalletInvoiceError } from "@domain/errors"
+import { checkedToWalletId } from "@domain/wallets"
+import { WalletInvoicesRepository } from "@services/mongoose"
+
+export const getInvoiceForWalletByHash = async ({
+  walletId: uncheckedWalletId,
+  paymentHash,
+}: {
+  walletId: string
+  paymentHash: PaymentHash
+}) => {
+  const walletId = checkedToWalletId(uncheckedWalletId)
+  if (walletId instanceof Error) return walletId
+
+  const walletInvoicesRepository = WalletInvoicesRepository()
+
+  const walletInvoice = await walletInvoicesRepository.findByPaymentHash(paymentHash)
+
+  if (walletInvoice instanceof Error) return walletInvoice
+
+  if (walletInvoice.recipientWalletDescriptor.id !== walletId) {
+    return new CouldNotFindWalletInvoiceError()
+  }
+
+  return walletInvoice
+}