method fixed, README added

.gitignore

@@ -1,2 +1,3 @@
 # Mac crap
-.DS_Store
+.DS_Store
+.idea

README.md

@@ -23,7 +23,7 @@ cordova plugin add cordova-plugin-game-center
 #### Latest version from GitHub
 
 ```
-cordova plugin add https://github.com/leecrossley/cordova-plugin-game-center.git
+cordova plugin add https://github.com/var77/cordova-plugin-game-center.git
 ```
 
 You **do not** need to reference any JavaScript, the Cordova plugin architecture will add a gamecenter object to your root automatically when you build. It will also automatically add the GameKit framework dependency.
@@ -38,8 +38,26 @@ Add the following to your `config.xml` to use version 0.4.1 (you can also omit t
 
 For more information, see the [PhoneGap build docs](http://docs.build.phonegap.com/en_US/configuring_plugins.md.html#Plugins).
 
+**Before building for iOS disable ARC for GameCenter.m file**
+> Project -> Build Phases -> Compile Sources -> Double Click on GameCenter.m -> paste -fno-objc-arc
+![alt Disable ARC](https://user-images.githubusercontent.com/17221195/45549686-abd04580-b839-11e8-88ab-898cb605ba4f.png) 
+
 ## Usage
 
+### Auth with Third Party backend
+
+You should do this as soon as your deviceready event has been fired. The plug handles the various auth scenarios for you.
+You need to enable game-center for your app from Itunes Connect
+> Sometimes it's needed to add some dummy leaderboard from game-center tab in itunes connect to make it work
+```
+var successCallback = function (data) {
+    alert(data.alias);
+    // data.alias, data.bundleId, data.displayName, data.playerId, data.publicKeyUrl, data.salt, data.signature, data.timestamp 
+};
+
+gamecenter.generateIdentityVerification(successCallback, failureCallback);
+```
+
 ### Auth
 
 You should do this as soon as your deviceready event has been fired. The plug handles the various auth scenarios for you.

src/ios/GameCenter.m

@@ -13,7 +13,7 @@ - (void) auth:(CDVInvokedUrlCommand*)command;
 {
     [self.commandDelegate runInBackground:^{
 
-        __weak GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
+        GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
 
         localPlayer.authenticateHandler = ^(UIViewController *viewController, NSError *error) {
             CDVPluginResult* pluginResult = nil;
@@ -51,7 +51,7 @@ - (void) generateIdentityVerification:(CDVInvokedUrlCommand*)command;
 {
     [self.commandDelegate runInBackground:^{
 
-        __weak GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
+        GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
 
         localPlayer.authenticateHandler = ^(UIViewController *viewController, NSError *error) {
             CDVPluginResult* pluginResult = nil;
@@ -68,40 +68,44 @@ - (void) generateIdentityVerification:(CDVInvokedUrlCommand*)command;
                         __block CDVPluginResult* pluginResult = nil;
                         if(error != nil)
                         {
-                            return; //some sort of error, can't authenticate right now
+                            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR messageAsString:[error localizedDescription]];
+                            [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
+                        } else {
+                            NSDictionary* user = @{
+                                   @"playerId":localPlayer.playerID,
+                                   @"alias":localPlayer.alias,
+                                   @"displayName":localPlayer.displayName,
+                                   @"publicKeyUrl":[publicKeyUrl absoluteString],
+                                   @"signature":[self base64forData:signature],
+                                   @"salt":[self base64forData:salt],
+                                   @"timestamp":@(timestamp),
+                                   @"bundleId": [[NSBundle mainBundle] bundleIdentifier]
+                            };
+                            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:user];
+                            [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
                         }
-                        NSDictionary* user = @{
-                               @"playerId":localPlayer.playerID,
-                               @"alias":localPlayer.alias,
-                               @"displayName":localPlayer.displayName,
-                               @"publicKeyUrl":publicKeyUrl,
-                               @"signature":signature,
-                               @"salt":salt,
-                               @"timestamp":@(timestamp),
-                               @"bundleId": [[NSBundle mainBundle] bundleIdentifier]
-                        };
-                        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:user];
 
                     }];
 
                 }
                 else if (error != nil)
                 {
                     pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR messageAsString:[error localizedDescription]];
+                    [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
                 }
                 else
                 {
                     pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR];
+                    [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
                 }
-                [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
             }
         };
     }];
 }
 
 - (void) getPlayerImage:(CDVInvokedUrlCommand*)command;
 {
-    __weak GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
+    GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
     __block CDVPluginResult* pluginResult = nil;
 
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
@@ -316,5 +320,35 @@ - (void) getAchievements:(CDVInvokedUrlCommand*)command;
          [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
      }];
 }
+- (NSString*)base64forData:(NSData*)theData {
+    const uint8_t* input = (const uint8_t*)[theData bytes];
+    NSInteger length = [theData length];
+
+    static char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+
+    NSMutableData* data = [NSMutableData dataWithLength:((length + 2) / 3) * 4];
+    uint8_t* output = (uint8_t*)data.mutableBytes;
+
+    NSInteger i;
+    for (i=0; i < length; i += 3) {
+        NSInteger value = 0;
+        NSInteger j;
+        for (j = i; j < (i + 3); j++) {
+            value <<= 8;
+
+            if (j < length) {
+                value |= (0xFF & input[j]);
+            }
+        }
+
+        NSInteger theIndex = (i / 3) * 4;
+        output[theIndex + 0] =                    table[(value >> 18) & 0x3F];
+        output[theIndex + 1] =                    table[(value >> 12) & 0x3F];
+        output[theIndex + 2] = (i + 1) < length ? table[(value >> 6)  & 0x3F] : '=';
+        output[theIndex + 3] = (i + 2) < length ? table[(value >> 0)  & 0x3F] : '=';
+    }
+
+    return [[[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding] autorelease];
+}
 
 @end