From 75bc1a0bca0c0017cbc23ae9d1c49bf5de9cd44b Mon Sep 17 00:00:00 2001
From: Sam Peters <unclesamtoshi@protonmail.com>
Date: Thu, 5 Oct 2023 14:25:19 -0500
Subject: [PATCH] feat: add get invoice by hash usecase

---
 .../wallets/get-invoice-for-wallet-by-hash.ts | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 core/api/src/app/wallets/get-invoice-for-wallet-by-hash.ts

diff --git a/core/api/src/app/wallets/get-invoice-for-wallet-by-hash.ts b/core/api/src/app/wallets/get-invoice-for-wallet-by-hash.ts
new file mode 100644
index 00000000000..164d0c5ce56
--- /dev/null
+++ b/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
+}