From 8b5b8eab0abc4a3488455dd0a969928fb9015607 Mon Sep 17 00:00:00 2001
From: Marc <32849820+marc-whil@users.noreply.github.com>
Date: Fri, 29 Jun 2018 04:30:18 -0400
Subject: [PATCH] Expose clearUpdates method to RN for purging downloaded
 packages (#1269)

This is useful when changing to a deployment with an older version than
the currently installed package.
---
 CodePush.js                                          |  1 +
 .../codepush/react/CodePushNativeModule.java         |  5 +++++
 docs/api-js.md                                       |  2 ++
 ios/CodePush/CodePush.m                              | 12 ++++++++++--
 typings/react-native-code-push.d.ts                  |  6 ++++++
 5 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/CodePush.js b/CodePush.js
index 81f0a3f..645d4e6 100644
--- a/CodePush.js
+++ b/CodePush.js
@@ -542,6 +542,7 @@ if (NativeCodePush) {
     sync,
     disallowRestart: RestartManager.disallow,
     allowRestart: RestartManager.allow,
+    clearUpdates: NativeCodePush.clearUpdates,
     InstallMode: {
       IMMEDIATE: NativeCodePush.codePushInstallModeImmediate, // Restart the app immediately
       ON_NEXT_RESTART: NativeCodePush.codePushInstallModeOnNextRestart, // Don't artificially restart the app. Allow the update to be "picked up" on the next app restart
diff --git a/android/app/src/main/java/com/microsoft/codepush/react/CodePushNativeModule.java b/android/app/src/main/java/com/microsoft/codepush/react/CodePushNativeModule.java
index 4ad7701..2d5e54e 100644
--- a/android/app/src/main/java/com/microsoft/codepush/react/CodePushNativeModule.java
+++ b/android/app/src/main/java/com/microsoft/codepush/react/CodePushNativeModule.java
@@ -587,4 +587,9 @@ public class CodePushNativeModule extends ReactContextBaseJavaModule {
             CodePushUtils.log(e);
         }
     }
+
+    @ReactMethod
+    public void clearUpdates() {
+        mCodePush.clearUpdates();
+    }
 }
diff --git a/docs/api-js.md b/docs/api-js.md
index ba084cd..acf92c0 100644
--- a/docs/api-js.md
+++ b/docs/api-js.md
@@ -28,6 +28,8 @@ When you require `react-native-code-push`, the module object provides the follow
 
 * [sync](#codepushsync): Allows checking for an update, downloading it and installing it, all with a single call. Unless you need custom UI and/or behavior, we recommend most developers to use this method when integrating CodePush into their apps
 
+* [clearUpdates](#clearupdates): Clear all downloaded CodePush updates. This is useful when switching to a different deployment which may have an older release than the current package.
+
 #### codePush
 
 ```javascript
diff --git a/ios/CodePush/CodePush.m b/ios/CodePush/CodePush.m
index c6075dd..b0a8b97 100644
--- a/ios/CodePush/CodePush.m
+++ b/ios/CodePush/CodePush.m
@@ -209,8 +209,6 @@ static NSString *bundleResourceSubdirectory = nil;
     [CodePushConfig current].deploymentKey = deploymentKey;
 }
 
-#pragma mark - Test-only methods
-
 /*
  * WARNING: This cleans up all downloaded and pending updates.
  */
@@ -221,6 +219,8 @@ static NSString *bundleResourceSubdirectory = nil;
     [self removeFailedUpdates];
 }
 
+#pragma mark - Test-only methods
+
 /*
  * This returns a boolean value indicating whether CodePush has
  * been set to run under a test configuration.
@@ -867,6 +867,14 @@ RCT_EXPORT_METHOD(restartApp:(BOOL)onlyIfUpdateIsPending
     resolve(@(NO));
 }
 
+/*
+ * This method clears CodePush's downloaded updates.
+ * It is needed to switch to a different deployment if the current deployment is more recent.
+ */
+RCT_EXPORT_METHOD(clearUpdates) {
+    [CodePush clearUpdates];
+}
+
 #pragma mark - JavaScript-exported module methods (Private)
 
 /*
diff --git a/typings/react-native-code-push.d.ts b/typings/react-native-code-push.d.ts
index 8df9f78..fa43625 100644
--- a/typings/react-native-code-push.d.ts
+++ b/typings/react-native-code-push.d.ts
@@ -273,6 +273,12 @@ declare namespace CodePush {
      */
     function disallowRestart(): void;
 
+    /**
+     * Clear all downloaded CodePush updates.
+     * This is useful when switching to a different deployment which may have an older release than the current package.
+     */
+    function clearUpdates(): void;
+
     /**
      * Immediately restarts the app.
      *