#import "RNNEventEmitter.h"
#import "RNNUtils.h"

@implementation RNNEventEmitter {
    NSInteger _appLaunchedListenerCount;
    BOOL _appLaunchedEventDeferred;
}

RCT_EXPORT_MODULE();

static NSString* const AppLaunched				= @"RNN.AppLaunched";
static NSString* const CommandCompleted			= @"RNN.CommandCompleted";
static NSString* const BottomTabSelected		= @"RNN.BottomTabSelected";
static NSString* const ComponentDidAppear		= @"RNN.ComponentDidAppear";
static NSString* const ComponentDidDisappear	= @"RNN.ComponentDidDisappear";
static NSString* const NavigationButtonPressed	= @"RNN.NavigationButtonPressed";
static NSString* const ModalDismissed	        = @"RNN.ModalDismissed";
static NSString* const ModalAttemptedToDismiss  = @"RNN.ModalAttemptedToDismiss";
static NSString* const SearchBarUpdated 		= @"RNN.SearchBarUpdated";
static NSString* const SearchBarCancelPressed 	= @"RNN.SearchBarCancelPressed";
static NSString* const PreviewCompleted         = @"RNN.PreviewCompleted";
static NSString* const ScreenPopped             = @"RNN.ScreenPopped";

- (NSArray<NSString *> *)supportedEvents {
    return @[AppLaunched,
             CommandCompleted,
             BottomTabSelected,
             ComponentDidAppear,
             ComponentDidDisappear,
             NavigationButtonPressed,
             ModalDismissed,
             SearchBarUpdated,
             SearchBarCancelPressed,
             PreviewCompleted,
             ScreenPopped,
             ModalAttemptedToDismiss];
}

# pragma mark public

- (void)sendOnAppLaunched {
    if (_appLaunchedListenerCount > 0) {
        [self send:AppLaunched body:nil];
    } else {
        _appLaunchedEventDeferred = TRUE;
    }
}

- (void)sendComponentDidAppear:(NSString *)componentId componentName:(NSString *)componentName componentType:(NSString *)componentType {
    [self send:ComponentDidAppear body:@{
        @"componentId":componentId,
        @"componentName": componentName,
        @"componentType": componentType
    }];
}

- (void)sendComponentDidDisappear:(NSString *)componentId componentName:(NSString *)componentName componentType:(NSString *)componentType {
    [self send:ComponentDidDisappear body:@{
        @"componentId":componentId,
        @"componentName": componentName,
        @"componentType": componentType
    }];
}

- (void)sendOnNavigationButtonPressed:(NSString *)componentId buttonId:(NSString*)buttonId {
    [self send:NavigationButtonPressed body:@{
        @"componentId": componentId,
        @"buttonId": buttonId
    }];
}

- (void)sendBottomTabSelected:(NSNumber *)selectedTabIndex unselected:(NSNumber*)unselectedTabIndex {
    [self send:BottomTabSelected body:@{
        @"selectedTabIndex": selectedTabIndex,
        @"unselectedTabIndex": unselectedTabIndex
    }];
}

- (void)sendOnNavigationCommandCompletion:(NSString *)commandName commandId:(NSString *)commandId params:(NSDictionary*)params {
    [self send:CommandCompleted body:@{
        @"commandId":commandId,
        @"commandName":commandName,
        @"params": params,
        @"completionTime": [RNNUtils getCurrentTimestamp]
    }];
}

- (void)sendOnSearchBarUpdated:(NSString *)componentId
                          text:(NSString*)text
                     isFocused:(BOOL)isFocused {
    [self send:SearchBarUpdated body:@{
        @"componentId": componentId,
        @"text": text,
        @"isFocused": @(isFocused)
    }];
}

- (void)sendOnSearchBarCancelPressed:(NSString *)componentId {
    [self send:SearchBarCancelPressed body:@{
        @"componentId": componentId
    }];
}

- (void)sendOnPreviewCompleted:(NSString *)componentId previewComponentId:(NSString *)previewComponentId {
    [self send:PreviewCompleted body:@{
        @"componentId": componentId,
        @"previewComponentId": previewComponentId
    }];
}

- (void)sendModalsDismissedEvent:(NSString *)componentId numberOfModalsDismissed:(NSNumber *)modalsDismissed {
    [self send:ModalDismissed body:@{
        @"componentId": componentId,
        @"modalsDismissed": modalsDismissed
    }];
}

- (void)sendModalAttemptedToDismissEvent:(NSString *)componentId {
    [self send:ModalAttemptedToDismiss body:@{
        @"componentId": componentId,
    }];
}

- (void)sendScreenPoppedEvent:(NSString *)componentId {
    [self send:ScreenPopped body:@{
        @"componentId": componentId
    }];
}

- (void)addListener:(NSString *)eventName {
    [super addListener:eventName];
    if ([eventName isEqualToString:AppLaunched]) {
        _appLaunchedListenerCount++;
        if (_appLaunchedEventDeferred) {
            _appLaunchedEventDeferred = FALSE;
            [self sendOnAppLaunched];
        }
    }
}

# pragma mark private

- (void)send:(NSString *)eventName body:(id)body {
    if (self.bridge == nil) {
        return;
    }
    [self sendEventWithName:eventName body:body];
}

@end