rac-nocomments.m

- (void) viewDidLoad {
    [super viewDidLoad];
    
    self.fetchUserMenuDataCommand = [[RACCommand alloc] initWithSignalBlock:^RACSignal *(id input) {
            return [TCAPI fetchUserMenuData];
        }];
 
    RAC(self, menuData) = [self.fetchUserMenuDataCommand.executionSignals switchToLatest];
 
    RACSignal *userIsLoggedInSignal = [[[[NSNotificationCenter defaultCenter] rac_addObserverForName:kUserLoggedOutNotification object:nil]
        mapReplace:@NO]
        startWith: @YES];
 
    @weakify(self);
    RACCommand *menuButtonPressed = [[RACCommand alloc] initWithEnabled:userIsLoggedInSignal signalBlock:^RACSignal *(id input) {
            @strongify(self);
            if (self.menuView.hidden) {
                if (self.menuData != nil) {
                    return [RACSignal return: @YES];
                }
                return [[self.fetchUserMenuDataCommand execute:nil]
                    mapReplace:@YES];
            } else {
                return [RACSignal return:@NO];
            }
        }];
 
    RACSignal *menuButtonSignal = [menuButtonPressed.executionSignals switchToLatest];
 
    RACSignal *showHideMenuSignal = [RACSignal merge:@[[menuButtonSignal], [userIsLoggedInSignal ignore:@YES]]];
 
    [self rac_liftSelector:@selector(showMenu:) withSignals: showHideMenuSignal];
 
    [self rac_liftSelector:@selector(showLoading:) withSignals: self.fetchUserMenuDataCommand.executing];
}