Create shared preferences API (#4654)

1 files changed, 51 insertions, 0 deletions

diff --git a/modules/expo-bluesky-swiss-army/src/SharedPrefs/index.native.ts b/modules/expo-bluesky-swiss-army/src/SharedPrefs/index.native.ts
new file mode 100644
index 000000000..0cea7c53b
--- /dev/null
+++ b/modules/expo-bluesky-swiss-army/src/SharedPrefs/index.native.ts
@@ -0,0 +1,51 @@
+import {requireNativeModule} from 'expo-modules-core'
+
+const NativeModule = requireNativeModule('ExpoBlueskySharedPrefs')
+
+export function setValue(
+  key: string,
+  value: string | number | boolean | null | undefined,
+): void {
+  // A bug on Android causes `JavaScripValue.isString()` to cause a crash on some occasions, seemingly because of a
+  // memory violation. Instead, we will use a specific function to set strings on this platform.
+  if (typeof value === 'string') {
+    return NativeModule.setString(key, value)
+  }
+  return NativeModule.setValue(key, value)
+}
+
+export function removeValue(key: string): void {
+  return NativeModule.removeValue(key)
+}
+
+export function getString(key: string): string | undefined {
+  return nullToUndefined(NativeModule.getString(key))
+}
+
+export function getNumber(key: string): number | undefined {
+  return nullToUndefined(NativeModule.getNumber(key))
+}
+
+export function getBool(key: string): boolean | undefined {
+  return nullToUndefined(NativeModule.getBool(key))
+}
+
+export function addToSet(key: string, value: string): void {
+  return NativeModule.addToSet(key, value)
+}
+
+export function removeFromSet(key: string, value: string): void {
+  return NativeModule.removeFromSet(key, value)
+}
+
+export function setContains(key: string, value: string): boolean {
+  return NativeModule.setContains(key, value)
+}
+
+// iOS returns `null` if a value does not exist, and Android returns `undefined. Normalize these here for JS types
+function nullToUndefined(value: any) {
+  if (value == null) {
+    return undefined
+  }
+  return value
+}