feat(i18n): localize recipient validation messages

src/actions/recipient.messages.ts

@@ -0,0 +1,39 @@
+import type { Dictionary } from "@/i18n/dictionaries"
+
+type RecipientActionCopy = Dictionary["inventory"]["recipients"]["actions"]
+
+type FieldErrors = Record<string, string[]>
+
+const recipientErrorMessageKeys = {
+  "Username already exists": "duplicateUsername",
+  "Email already exists": "duplicateEmail",
+} as const satisfies Record<string, keyof RecipientActionCopy>
+
+function isRecipientErrorMessage(
+  message: string,
+): message is keyof typeof recipientErrorMessageKeys {
+  return message in recipientErrorMessageKeys
+}
+
+function localizeRecipientMessage(
+  message: string,
+  copy: RecipientActionCopy,
+): string {
+  if (!isRecipientErrorMessage(message)) return message
+
+  return copy[recipientErrorMessageKeys[message]]
+}
+
+export function localizeRecipientFieldErrors(
+  errors: FieldErrors | undefined,
+  copy: RecipientActionCopy,
+): FieldErrors | undefined {
+  if (!errors) return undefined
+
+  return Object.fromEntries(
+    Object.entries(errors).map(([field, messages]) => [
+      field,
+      messages.map((message) => localizeRecipientMessage(message, copy)),
+    ]),
+  )
+}