mobile: Add support for app settings

1 files changed, 39 insertions, 0 deletions

diff --git a/packages/mobile/lib/settings.ts b/packages/mobile/lib/settings.ts
new file mode 100644
index 00000000..85296cfa
--- /dev/null
+++ b/packages/mobile/lib/settings.ts
@@ -0,0 +1,39 @@
+import * as SecureStore from "expo-secure-store";
+import { useEffect, useState } from "react";
+
+const SETTING_NAME = "settings";
+
+export type Settings = {
+  apiKey: string;
+  address: string;
+};
+
+export default function useAppSettings() {
+  const [settings, setSettings] = useState<Settings>({
+    apiKey: "",
+    address: "",
+  });
+
+  useEffect(() => {
+    SecureStore.setItemAsync(SETTING_NAME, JSON.stringify(settings));
+  }, [settings]);
+
+  useEffect(() => {
+    SecureStore.getItemAsync(SETTING_NAME).then((val) => {
+      if (!val) {
+        return;
+      }
+      setSettings(JSON.parse(val));
+    });
+  }, []);
+
+  return { settings, setSettings };
+}
+
+export async function getAppSettings() {
+  const val = await SecureStore.getItemAsync(SETTING_NAME);
+  if (!val) {
+    return null;
+  }
+  return JSON.parse(val) as Settings;
+}