/*!
 *  @param buttons @[ STRING_CANCEL, STRING_OK ]
 *  @param controller SELF for UIViewController, NIL for rootViewController
 *  @param completion VALUES stores textfield values in order
 */
+ (void)action:(NSString*)title
       message:(NSString*)message
           tag:(NSInteger)tag
   destructive:(NSArray*)destructives
       buttons:(NSArray*)buttons
    controller:(UIViewController*)controller
      animated:(BOOL)animated
    completion:(void (^)(NSInteger buttonIndex))completion;

/*!
 *  @param fields @[ @{ @"text":@"string", 
                        @"placeholder":@"string", 
                        @"secure":@NO, ,
                        @"keyboard":[NSNumber numberWithInteger:UIKeyboardTypeAlphabet] 
                        } ]
 *  @param buttons @[ STRING_CANCEL, STRING_OK ]
 *  @param controller SELF for UIViewController, NIL for rootViewController
 *  @param completion VALUES stores textfield values in order
 */
+ (void)alert:(NSString*)title
      message:(NSString*)message
          tag:(NSInteger)tag
       fields:(NSArray*)fields
      buttons:(NSArray*)buttons
   controller:(UIViewController*)controller
     animated:(BOOL)animated
   completion:(void (^)(BOOL ok, NSArray * values))completion;

[WCSAlertController alert:NSLocalizedString(@"Login style Alert", nil)
                  message:NSLocalizedString(@"This is an alert with a regular text field and a password field.", nil)
                      tag:0
                   fields:@[ @{ @"text":@"",
                                @"placeholder":NSLocalizedString(@"Username", nil),
                                @"secure":@NO,
                                @"keyboard":[NSNumber numberWithInteger:UIKeyboardTypeAlphabet]
                                },
                             @{ @"text":@"",
                                @"placeholder":NSLocalizedString(@"Password", nil),
                                @"secure":@YES,
                                @"keyboard":[NSNumber numberWithInteger:UIKeyboardTypeAlphabet]
                                }]
                  buttons:@[ STRING_CANCEL, STRING_OK ]
               controller:nil
                 animated:YES
               completion:^(BOOL ok, NSArray * _Nonnull values) {
                   if ( ok )
                       NSLog(@"Username: %@, Password: %@", values[0], values[1]);
                   else
                       NSLog(@"Cancel pressed.");
               }];