From 051611f96cc4485942cef6d2bae7177f18e75e4e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=BCnay=20Mert=20Karado=C4=9Fan?=
 <mertkaradogan@gmail.com>
Date: Wed, 11 Mar 2020 13:45:15 +0000
Subject: [PATCH] Add reauthorizeDataAccess method to LoginManager

---
 .../androidsdk/FBLoginManagerModule.java      | 14 +++++++++
 example/App.js                                | 31 ++++++++++++++++---
 ios/RCTFBSDK/login/RCTFBSDKLoginManager.m     | 13 ++++++++
 js/FBLoginManager.js                          |  7 +++++
 4 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/android/src/main/java/com/facebook/reactnative/androidsdk/FBLoginManagerModule.java b/android/src/main/java/com/facebook/reactnative/androidsdk/FBLoginManagerModule.java
index ce6da614..d37a2b55 100644
--- a/android/src/main/java/com/facebook/reactnative/androidsdk/FBLoginManagerModule.java
+++ b/android/src/main/java/com/facebook/reactnative/androidsdk/FBLoginManagerModule.java
@@ -146,6 +146,20 @@ public void logInWithPermissions(ReadableArray permissions, final Promise promis
         }
     }
 
+    /**
+     * Attempts a re-authorization to regain data access.
+     * @param promise Use promise to pass re-authorization result to JS after re-authorization finish.
+     */
+    @ReactMethod
+    public void reauthorizeDataAccess(final Promise promise) {
+        final LoginManager loginManager = LoginManager.getInstance();
+        loginManager.registerCallback(getCallbackManager(), new LoginManagerCallback(promise));
+        Activity activity = getCurrentActivity();
+        if (activity != null) {
+            loginManager.reauthorizeDataAccess(activity);
+        }
+    }
+
     private WritableArray setToWritableArray(Set<String> set) {
         WritableArray array = Arguments.createArray();
         for (String e: set) {
diff --git a/example/App.js b/example/App.js
index 2bf406cf..f43f89fa 100644
--- a/example/App.js
+++ b/example/App.js
@@ -22,8 +22,15 @@
  */
 
 import React, {Component} from 'react';
-import {Alert, StyleSheet, Text, TouchableHighlight, View} from 'react-native';
-import {LoginButton, ShareDialog} from 'react-native-fbsdk';
+import {
+  Alert,
+  Button,
+  StyleSheet,
+  Text,
+  TouchableHighlight,
+  View,
+} from 'react-native';
+import {LoginButton, LoginManager, ShareDialog} from 'react-native-fbsdk';
 
 const SHARE_LINK_CONTENT = {
   contentType: 'link',
@@ -31,6 +38,19 @@ const SHARE_LINK_CONTENT = {
 };
 
 export default class App extends Component<{}> {
+  _alert = (title, obj) => {
+    Alert.alert(title, JSON.stringify(obj, null, 2));
+  };
+
+  _reauthorizeDataAccess = async () => {
+    try {
+      const result = await LoginManager.reauthorizeDataAccess();
+      this._alert("Result", result);
+    } catch (error) {
+      this._alert("Error", error);
+    }
+  };
+
   _shareLinkWithShareDialog = async () => {
     const canShow = await ShareDialog.canShow(SHARE_LINK_CONTENT);
     if (canShow) {
@@ -57,8 +77,11 @@ export default class App extends Component<{}> {
             Alert.alert(JSON.stringify(error || data, null, 2));
           }}
         />
+        <TouchableHighlight onPress={this._reauthorizeDataAccess}>
+          <Text style={styles.buttonText}>Reauthorize Data Access</Text>
+        </TouchableHighlight>
         <TouchableHighlight onPress={this._shareLinkWithShareDialog}>
-          <Text style={styles.shareText}>Share link with ShareDialog</Text>
+          <Text style={styles.buttonText}>Share link with ShareDialog</Text>
         </TouchableHighlight>
       </View>
     );
@@ -72,7 +95,7 @@ const styles = StyleSheet.create({
     alignItems: 'center',
     backgroundColor: '#F5FCFF',
   },
-  shareText: {
+  buttonText: {
     fontSize: 20,
     margin: 10,
   },
diff --git a/ios/RCTFBSDK/login/RCTFBSDKLoginManager.m b/ios/RCTFBSDK/login/RCTFBSDKLoginManager.m
index d05ed3cb..addf4409 100644
--- a/ios/RCTFBSDK/login/RCTFBSDKLoginManager.m
+++ b/ios/RCTFBSDK/login/RCTFBSDKLoginManager.m
@@ -86,6 +86,19 @@ + (BOOL)requiresMainQueueSetup
   [_loginManager logInWithPermissions:permissions fromViewController:nil handler:requestHandler];
 };
 
+RCT_REMAP_METHOD(reauthorizeDataAccess, reauthorizeDataAccess_resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
+{
+    FBSDKLoginManagerLoginResultBlock requestHandler = ^(FBSDKLoginManagerLoginResult *result, NSError *error) {
+      if (error) {
+        reject(@"FacebookSDK", @"Reauthorization Failed", error);
+      } else {
+        resolve(RCTBuildResultDictionary(result));
+      }
+    };
+    
+    [_loginManager reauthorizeDataAccess:nil handler:requestHandler];
+};
+
 RCT_EXPORT_METHOD(logOut)
 {
   [_loginManager logOut];
diff --git a/js/FBLoginManager.js b/js/FBLoginManager.js
index 1287b445..eb91e580 100644
--- a/js/FBLoginManager.js
+++ b/js/FBLoginManager.js
@@ -96,6 +96,13 @@ module.exports = {
     LoginManager.setDefaultAudience(defaultAudience);
   },
 
+  /**
+   * Re-authorizes the user to regain data access.
+   */
+  reauthorizeDataAccess(): Promise<LoginResult> {
+    return LoginManager.reauthorizeDataAccess();
+  },
+
   /**
    * Logs out the user.
    */