Backup Optic Tokens to a file to allow importing from another device

package.json

@@ -32,12 +32,15 @@
     "expo-camera": "~12.1.2",
     "expo-clipboard": "~2.1.0",
     "expo-constants": "~13.0.0",
+    "expo-document-picker": "~10.1.3",
     "expo-file-system": "~13.1.4",
     "expo-font": "~10.0.4",
     "expo-local-authentication": "~12.1.0",
+    "expo-media-library": "~14.0.0",
     "expo-notifications": "~0.14.0",
     "expo-random": "~12.1.1",
     "expo-secure-store": "~11.1.0",
+    "expo-sharing": "~10.1.0",
     "expo-status-bar": "~1.2.0",
     "expo-updates": "~0.11.7",
     "expo-web-browser": "~10.1.0",

src/context/SecretsContext.tsx

@@ -17,6 +17,7 @@ export type ContextType = {
   add: (_: Omit<Secret, '_id'>) => Promise<void>
   update: (_: Secret) => Promise<void>
   remove: (_: Secret) => Promise<void>
+  reset: () => Promise<void>
 }
 
 const initialContext: ContextType = {
@@ -30,6 +31,9 @@ const initialContext: ContextType = {
   remove: async () => {
     // @todo
   },
+  reset: async () => {
+    // @todo
+  },
 }
 
 const SecretsContext = createContext<ContextType>(initialContext)
@@ -86,9 +90,14 @@ export const SecretsProvider: React.FC<SecretsProviderProps> = ({
     [user]
   )
 
+  const reset = useCallback<ContextType['reset']>(async () => {
+    await secretsManager.reset()
+    setSecrets([])
+  }, [])
+
   const value = useMemo<ContextType>(
-    () => ({ secrets, add, update, remove }),
-    [secrets, add, update, remove]
+    () => ({ secrets, add, update, remove, reset }),
+    [secrets, add, update, remove, reset]
   )
 
   return (

src/lib/secretsManager.ts

@@ -69,4 +69,17 @@ const remove = async (secretId: string) => {
   }
 }
 
-export default { getAllByUser, get, upsert, remove }
+/**
+ * Resets the secrets to an empty list.
+ * @async
+ * @returns {void}
+ */
+const reset = async () => {
+  try {
+    await save([])
+  } catch (err) {
+    console.error('Failed to reset the secrets from data store', err)
+  }
+}
+
+export default { getAllByUser, get, upsert, remove, reset }

src/screens/HomeScreen.test.tsx

@@ -83,6 +83,7 @@ describe('HomeScreen', () => {
       add: jest.fn(),
       remove: jest.fn(),
       update: jest.fn(),
+      reset: jest.fn(),
     })
 
     const view = setup()