From 2e1558fb87fcc6df0b89523e6781e86a95f8e633 Mon Sep 17 00:00:00 2001
From: Russell <russhwolf@gmail.com>
Date: Sun, 22 May 2022 22:17:00 -0400
Subject: [PATCH] Add Factory implementation for KeychainSettings

---
 CHANGELOG.md                                       |  1 +
 .../com/russhwolf/settings/KeychainSettings.kt     | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e45720d..042dfa5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - BREAKING: Remove default values for defaultValue parameters
 - Remove `@ExperimentalSettingsApi` from `ObservableSettings`, `SettingsListener`, and related APIs
 - Remove `@ExperimentalSettingsImplementation` from JVM implementations
+- Add `Factory` implementation for `KeychainSettings`
 
 ## v0.9 *(2022-05-01)* ##
 
diff --git a/multiplatform-settings/src/appleMain/kotlin/com/russhwolf/settings/KeychainSettings.kt b/multiplatform-settings/src/appleMain/kotlin/com/russhwolf/settings/KeychainSettings.kt
index 60bb1d8a..aedc0966 100644
--- a/multiplatform-settings/src/appleMain/kotlin/com/russhwolf/settings/KeychainSettings.kt
+++ b/multiplatform-settings/src/appleMain/kotlin/com/russhwolf/settings/KeychainSettings.kt
@@ -98,6 +98,20 @@ public class KeychainSettings(vararg defaultProperties: Pair<CFStringRef?, CFTyp
 
     private val defaultProperties = mapOf(kSecClass to kSecClassGenericPassword) + mapOf(*defaultProperties)
 
+    /**
+     * A factory that can produce [Settings] instances.
+     *
+     * This class can only be instantiated via a platform-specific constructor. It's purpose is so that `Settings`
+     * objects can be created in common code, so that the only platform-specific behavior necessary in order to use
+     * multiple `Settings` objects is the one-time creation of a single `Factory`.
+     *
+     * This class creates `Settings` objects backed by the Apple keychain.
+     */
+    public class Factory : Settings.Factory {
+        override fun create(name: String?): Settings =
+            if (name != null) KeychainSettings(name) else KeychainSettings()
+    }
+
     public override val keys: Set<String>
         get() = memScoped {
             val attributes = alloc<CFArrayRefVar>()