RTM Events Module

The RTM Events Module provides functionality for subscribing to and handling real-time events in the Gamanza Engage Web Client SDK. It allows developers to subscribe to various events, unsubscribe from events, and emit data to the WebSocket connection.

Accessing the Module

The RTM Events Module can be accessed through the Gamanza Engage SDK instance:

const rtmEvents = sdk.rtmEvents;

Public Methods

subscribe

Subscribes to receive real-time events based on the real-time communication API provided by Gamanza Engage.

Signature:

subscribe(event, callback, options)

Type Definition:

function subscribe<T extends keyof EventTypeMap>(
  event: T, 
  callback: SDKEventListener<T>, 
  options?: SubscriptionOptions
): string;

Parameters:

Name	Type	Description
event	keyof EventTypeMap	The event name to subscribe to
callback	SDKEventListener<T>	The callback function that will be called when the event is triggered
options	SubscriptionOptions (optional)	Additional options for the subscription

Returns:

Type	Description
string	A unique subscription ID that can be used to unsubscribe from the event

Example:

// Subscribe to XP up events
const subscriptionId = rtmEvents.subscribe('ranks:on:xpUp', (data, rawEvent) => {
  console.log('Player XP increased:', data.xpBalance);
  console.log('Raw event:', rawEvent);
});

// Subscribe with options
const optionsSubscriptionId = rtmEvents.subscribe('ranks:on:levelUp', 
  (data, rawEvent) => {
    console.log('Player leveled up to:', data.level.levelNumber);
  },
  { 
    once: true, // Only trigger once
    timeout: 60000, // Timeout after 60 seconds
    filter: (data) => data.level.levelNumber > 5 // Only trigger for levels above 5
  }
);

unsubscribe

Removes a single subscription by its identifier.

Signature:

unsubscribe(subscriptionId)

Type Definition:

function unsubscribe(subscriptionId: string): boolean;

Parameters:

Name	Type	Description
subscriptionId	string	The unique subscription ID returned by the subscribe method

Returns:

Type	Description
boolean	true if the subscription was successfully removed, false otherwise

Example:

// Unsubscribe from an event
const subscriptionId = rtmEvents.subscribe('ranks:on:xpUp', callback);
const unsubscribed = rtmEvents.unsubscribe(subscriptionId);

if (unsubscribed) {
  console.log('Successfully unsubscribed from event');
} else {
  console.log('Failed to unsubscribe or subscription not found');
}

unsubscribeFromEvent

Removes all active subscriptions for a specific event.

Signature:

unsubscribeFromEvent(event)

Type Definition:

function unsubscribeFromEvent<T extends keyof EventTypeMap>(event: T): number;

Parameters:

Name	Type	Description
event	keyof EventTypeMap	The event name to unsubscribe from

Returns:

Type	Description
number	The number of subscriptions that were removed

Example:

// Unsubscribe from all XP up events
const removedCount = rtmEvents.unsubscribeFromEvent('ranks:on:xpUp');
console.log(`Removed ${removedCount} subscriptions`);

getEventsStats

Returns statistics about the current event subscriptions.

Signature:

getEventsStats()

Type Definition:

function getEventsStats(): Record<string, any>;

Parameters:

None

Returns:

Type	Description
Record<string, any>	An object containing statistics about the current event subscriptions

Example:

// Get subscription statistics
const stats = rtmEvents.getEventsStats();
console.log('Current subscriptions:', stats);

emitToWebSocket

Sends data using the Gamanza Engage Messaging Service (WebSockets).

Signature:

emitToWebSocket(event, data)

Type Definition:

function emitToWebSocket<T extends keyof EmitterTypeMap>(event: T, data: EmitterTypeMap[T]): void;

Parameters:

Name	Type	Description
event	keyof EmitterTypeMap	The event name to emit
data	EmitterTypeMap[T]	The data to send with the event

Returns:

Type	Description
void	This method does not return a value

Example:

// Send an acknowledgment message
rtmEvents.emitToWebSocket('send:ack', { messageId: 'message-123' });

// Send an analytics tracking event
rtmEvents.emitToWebSocket('send:analytics:event', { 
  eventName: 'button_click',
  properties: {
    buttonId: 'login-button',
    timestamp: Date.now()
  }
});

Events

The RTM Events Module provides access to various real-time events that can be subscribed to. These events are categorized into different groups based on their functionality.

System Events

Event Name	Description	Type	Guarantee Type	Properties
on:error	System error events	Direct	FIRE_FORGET	eventName: string, additional error properties

Error Event Data Structure

interface ErrorEventData extends BaseEventData {
  eventName: string;
  [key: string]: unknown; // Additional error properties
}

Ranks Events

Event Name	Description	Type	Guarantee Type	Properties
ranks:on:xpUp	XP increase events	Direct	FIRE_FORGET	eventName: string, playerId: string, level: Level, nextLevel?: Level, nextRank?: Rank, pointsUntilNextLevel: number, pointsUntilNextRank: number, rank: Rank, xpBalance: number, rewardsGroupId: string
ranks:on:levelUp	Level up events	Direct	FIRE_FORGET	eventName: string, playerId: string, level: Level, nextLevel?: Level, nextRank?: Rank, pointsUntilNextLevel: number, pointsUntilNextRank: number, rank: Rank, xpBalance: number, claimReward: true, rewards: Reward[], rewardsGroupId: string
ranks:on:rankUp	Rank up events	Direct	FIRE_FORGET	eventName: string, playerId: string, level: Level, nextLevel?: Level, nextRank?: Rank, pointsUntilNextLevel: number, pointsUntilNextRank: number, rank: Rank, xpBalance: number, claimReward: boolean, rewards: Reward[], rewardsGroupId: string
capsMultipliers:on:capReached	Maximum cap reached events	Direct	FIRE_FORGET	eventName: string, playerId: string, type: string, limit: number, period: string, reached: boolean
ranks:on:levelBoosterActivated	Level booster activation events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: ActiveMetadataBoosterType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string
ranks:on:levelBoosterEnd	Level booster end events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: ActiveMetadataBoosterType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string
ranks:on:optIn	Gamification opt-in events	Direct	FIRE_FORGET	eventName: string, playerId: string, status: string
ranks:on:optOut	Gamification opt-out events	Direct	FIRE_FORGET	eventName: string, playerId: string, status: string

XP Up Event Data Structure

interface XpUpEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  level: {
    _id: string;
    levelNumber: number;
  };
  nextLevel?: {
    _id: string;
    levelNumber: number;
  };
  nextRank?: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  pointsUntilNextLevel: number;
  pointsUntilNextRank: number;
  rank: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  xpBalance: number;
  rewardsGroupId: string;
}

Level Up Event Data Structure

interface LevelUpEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  level: {
    _id: string;
    levelNumber: number;
  };
  nextLevel?: {
    _id: string;
    levelNumber: number;
  };
  nextRank?: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  pointsUntilNextLevel: number;
  pointsUntilNextRank: number;
  rank: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  xpBalance: number;
  claimReward: true;
  rewards: Reward[];
  rewardsGroupId: string;
}

Rank Up Event Data Structure

interface RankUpEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  level: {
    _id: string;
    levelNumber: number;
  };
  nextLevel?: {
    _id: string;
    levelNumber: number;
  };
  nextRank?: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  pointsUntilNextLevel: number;
  pointsUntilNextRank: number;
  rank: {
    _id: string;
    name: string;
    imageUrl: string;
    translations: {
      language: string;
      name: string;
      description: string;
    }[];
  };
  xpBalance: number;
  claimReward: boolean;
  rewards: Reward[];
  rewardsGroupId: string;
}

Ranks Max Cap Reached Event Data Structure

interface RanksMaxCapReachedEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  type: string;
  limit: number;
  period: string;
  reached: boolean;
}

Active Booster Event Data Structure

interface ActiveBoosterEventData extends BaseEventData {
  eventName: string;
  _id: string;
  playerId: string;
  rewardId: string;
  boosterRate: number;
  timeStart: string;
  timeEnd: string;
  status: string;
  type: string;
  boosterType?: RewardTypeEnum;
  countDown?: {
    days: number;
    hours: number;
    minutes: number;
    seconds: number;
    totalSeconds: number;
  };
  metadata?: {
    [key: string]: unknown;
  };
  isNew?: boolean;
  isRecentBooster?: boolean;
  createAt?: string;
}

Gamification Opt Event Data Structure

interface GamificationOptEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  status: string;
}

Virtual Currency Events

Event Name	Description	Type	Guarantee Type	Properties
virtualCurrency:on:walletUpdate	Wallet balance update events	Direct	FIRE_FORGET	eventName: string, balance: number, playerId: string
virtualCurrency:on:tokenBoosterActivated	Token booster activation events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: ActiveMetadataBoosterType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string
virtualCurrency:on:tokenBoosterEnd	Token booster end events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: ActiveMetadataBoosterType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string

Wallet Update Event Data Structure

interface WalletUpdateEventData extends BaseEventData {
  eventName: string;
  balance: number;
  playerId: string;
}

Missions Events

Event Name	Description	Type	Guarantee Type	Properties
missions:on:missionsBoosterActivated	Missions booster activation events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: MissionBoosterMetadataType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string
missions:on:missionsBoosterEnd	Missions booster end events	Direct	FIRE_FORGET	eventName: string, _id: string, playerId: string, rewardId: string, boosterRate: number, timeStart: string, timeEnd: string, status: string, type: string, boosterType?: RewardTypeEnum, countDown?: ActiveCountdownBoosterType, metadata?: MissionBoosterMetadataType, isNew?: boolean, isRecentBooster?: boolean, createAt?: string
missions:on:objectiveUpdate	Mission objective update events	Direct	FIRE_FORGET	eventName: string, playerId: string, bundleId: string, bundleStateId: string, missionId: string, missionStateId: string, objectiveId: string, objectiveStateId: string, objectiveSummary: any, date: string
missions:on:objectiveComplete	Mission objective completion events	Direct	FIRE_FORGET	eventName: string, playerId: string, bundleId: string, bundleStateId: string, missionId: string, missionStateId: string, objectiveId: string, objectiveStateId: string, objectiveSummary: any, date: string
missions:on:missionUpdate	Mission update events	Direct	FIRE_FORGET	eventName: string, playerId: string, easterEggs: any, _id: string, name: string, description: string, tags: string[], objectives: any[], validityTime: any, status: string, rewardCategories: any[], rewardClaimStatus: string, missionBundleState: any, bundleInternalDetails: any, bundleExternalDetails: any, enabled: boolean, version: number, state: string, missionBundleId: string, bundleStateId: string, missionId: string, endDate: string, startDate: string
missions:on:missionComplete	Mission completion events	Direct	FIRE_FORGET	eventName: string, playerId: string, easterEggs: any, _id: string, name: string, description: string, tags: string[], objectives: any[], validityTime: any, status: string, rewardCategories: any[], rewardClaimStatus: string, missionBundleState: any, bundleInternalDetails: any, bundleExternalDetails: any, enabled: boolean, version: number, state: string, missionBundleId: string, bundleStateId: string, missionId: string, endDate: string, startDate: string
missions:on:missionBundleComplete	Mission bundle completion events	Direct	FIRE_FORGET	eventName: string, playerId: string, bundleId: string, status: string, bundleSummary: any, date: string
missions:on:missionBundleAssign	Mission bundle assignment events	Direct	FIRE_FORGET	eventName: string, playerId: string, missionBundleExternalDescription: any, date: string

Mission Booster Metadata Type Structure

interface MissionBoosterMetadataType {
  missionId: string;
  bundleId: string;
  missionDescription: string;
  missionBundleExternalDetails: {
    language: string;
    name: string;
    description: string;
  };
  rewardId: string;
  bundleStateId: string;
  missionStateId: string;
  [key: string]: unknown;
}

Mission Objective Event Data Structure

interface MissionObjectiveEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  bundleId: string;
  bundleStateId: string;
  missionId: string;
  missionStateId: string;
  objectiveId: string;
  objectiveStateId: string;
  objectiveSummary: {
      _id: string;
      conditionValue: string;
      conditionType: string;
      translations: Pick<TranslationType, 'language' | 'name' | 'description'>[];
      missionEventType: string;
      value: number;
      completed: boolean;
      state: MissionProgressType;
  };
  date: string;
}

Mission Update Event Data Structure

export interface MissionUpdateEventData extends BaseEventData {
    _id: string;
    name: string;
    description: string;
    tags: SlimTagType[];
    objectives: ObjectiveMissionTypes[];
    validityTime: ValidityTimeType | ValidityTimePeriodType | ValidityTimeSpecificDateType;
    status: MissionStatusEnum;
    rewardCategories: MissionRewardCategoryType[];
    rewardClaimStatus?: MissionClaimStatusType;
    missionBundleState?: MissionProgressType;
    bundleInternalDetails: InternalDetailType;
    bundleExternalDetails: TranslationType[];
    enabled: boolean;
    version: number;
    state?: MissionProgressType;
    missionBundleId?: string;
    bundleStateId?: string;
    missionId?: string;
    endDate?: string;
    startDate?: string;
    originalMissionBundleId: string;
    playerId: string;
    repetitionCount?: number;
    repetitionEnabled: boolean;
    playerId: string;
    easterEggs?: EasterEggsType[];
}

Mission Bundle Event Data Structure

interface MissionBundleEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  bundleId: string;
  status: string;
  bundleSummary: {
      _id: string;
      missionBundleExternalDescription: TranslationType;
      state: MissionProgressType;
  };
  date: string;
}

Mission Bundle Assign Event Data Structure

interface MissionBundleAssignEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  missionBundleExternalDescription: TranslationType[];
  date: string;
}

Tournaments Events

Event Name	Description	Type	Guarantee Type	Properties
tournaments:on:beforeStarts	Tournament about to start events	Direct	FIRE_FORGET	eventName: string, playerId: string, tournamentId: string, tournamentName: string, tournamentDescription: string, tournamentType: string, optIn: boolean, maxNumberOfBets: number, timePeriod: any, externalDetails: any, industry: TournamentIndustryTypeEnum, leaderboardRewards: LeaderboardReward[], timePeriod?: TimePeriodType;
tournaments:on:starts	Tournament start events	Direct	FIRE_FORGET	eventName: string, playerId: string, tournamentId: string, tournamentName: string, tournamentDescription: string, tournamentType: string, optIn: boolean, maxNumberOfBets: number, timePeriod: any, externalDetails: any, industry: TournamentIndustryTypeEnum, leaderboardRewards: LeaderboardReward[], timePeriod?: TimePeriodType;
tournaments:on:ended	Tournament end events	Direct	FIRE_FORGET	eventName: string, externalDetails: any, industry: string, maxNumberOfBets: number, optIn: boolean, timePeriod: any, tournamentDescription: string, tournamentId: string, tournamentName: string, tournamentType: string, leaderboardRewards: LeaderboardReward[], timePeriod?: TimePeriodType;, externalDetails: any
tournaments:on:playerWonRewards	Tournament player won rewards events	Direct	FIRE_FORGET	eventName: string, industry: string, maxNumberOfBets: number, optIn: boolean, timePeriod: any, tournamentDescription: string, tournamentId: string, tournamentName: string, tournamentType: string, leaderboard: { position: number }, leaderboardRewards: LeaderboardReward[], timePeriod?: TimePeriodType;, earnedRewards?: { [key: string]: Reward };
tournaments:on:leaderboardUpdated	Tournament leaderboard update events	Broadcast	FIRE_FORGET	eventName: string, tournament: any, leaderboard: any, timestamp: string
tournaments:on:playerLeaderboardUpdated	Player leaderboard update events	Direct	FIRE_FORGET	eventName: string, tournaments: { tournamentId: string, position: number, score: number, spinsLeft: number }[], timestamp: string
tournaments:on:spinsLeftEmpty	No spins left events	Direct	FIRE_FORGET	eventName: string, playerId: string, tournament: any
tournaments:on:leaderboardReady	Leaderboard ready events	Broadcast	FIRE_FORGET	eventName: string, tournamentId: string, externalDetails: any, leaderboardRewards: LeaderboardReward[], eligibility: any, timePeriod?: TimePeriodType;, eligibility: TournamentEligibilityType

Tournament Notifications Event Data Structure

interface TournamentNotificationsEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  tournamentId: string;
  tournamentName: string;
  tournamentDescription: string;
  tournamentType: string;
  optIn: boolean;
  maxNumberOfBets: number;
  timePeriod: any;
  externalDetails: ExternalDetailsEntity[];
  industry: TournamentIndustryTypeEnum;
  leaderboardRewards: LeaderboardReward[];
  timePeriod?: TimePeriodType;
}

Tournament Ended Event Data Structure

interface TournamentEndedEventData extends BaseEventData {
  eventName: string;
  externalDetails: any;
  industry: string;
  leaderboardRewards: any[];
  maxNumberOfBets: number;
  optIn: boolean;
  timePeriod: any;
  tournamentDescription: string;
  tournamentId: string;
  tournamentName: string;
  tournamentType: string;
}

Tournament Player Won Event Data Structure

interface TournamentPlayerWonEventData extends BaseEventData {
  eventName: string;
  earnedRewards: any;
  externalDetails: any;
  industry: string;
  leaderboardRewards: any[];
  maxNumberOfBets: number;
  optIn: boolean;
  timePeriod: any;
  tournamentDescription: string;
  tournamentId: string;
  tournamentName: string;
  tournamentType: string;
  leaderboard: {
    position: number;
  };
}

Tournaments Updated Event Data Structure

interface TournamentsUpdatedEventData extends BaseEventData {
  eventName: string;
  tournament: any;
  leaderboard: any;
  timestamp: string;
}

Player Leaderboard Updated Event Data Structure

interface PlayerLeaderboardUpdatedEventData extends BaseEventData {
  eventName: string;
  tournaments: {
    tournamentId: string;
    position: number;
    score: number;
    spinsLeft: number;
  }[];
  timestamp: string;
}

Spins Left Empty Event Data Structure

interface SpinsLeftEmptyEventData extends BaseEventData {
  eventName: string;
  playerId: string;
  tournament: TournamentEventData;
}

Tournament Leaderboard Ready Structure

interface TournamentLeaderboardReady extends BaseEventData {
  eventName: string;
  tournamentId: string;
  externalDetails: any;
  leaderboardRewards: LeaderboardReward[];
  eligibility: TournamentEligibilityType;
}

CRM Events

Event Name	Description	Type	Guarantee Type	Properties
messageGateway:on:sendOnSiteNotification	On-site notification events	Direct	BEST_EFFORT	eventName: string, msg: { type: string, contentHtml: string, language: string }, playerId: string

On-Site Notification Event Data Structure

interface OnSiteNotificationEventData extends BaseEventData {
  eventName: string;
  msg: {
    type: string;
    contentHtml: string;
    language: string;
  };
  playerId: string;
}

Related Interfaces

SubscriptionOptions

Interface for configuring event subscriptions.

interface SubscriptionOptions {
  once?: boolean;
  timeout?: number;
  filter?: (data: any) => boolean;
  maxRetries?: number;
  autoAck?: boolean;
}

Property	Type	Description
once	boolean (optional)	If true, the subscription will be automatically removed after the first event is received
timeout	number (optional)	Time in milliseconds after which the subscription will be automatically removed if no event is received
filter	Function (optional)	A function that receives the event data and returns a boolean indicating whether the event should be processed
maxRetries	number (optional)	Maximum number of retries for failed event processing
autoAck	boolean (optional)	If true, events will be automatically acknowledged. Default is false

SDKEventListener

Type definition for event listener callbacks.

type SDKEventListener<T extends keyof EventTypeMap> = (
  data: EventTypeMap[T],
  internalRawEvent: InternalRawEvent<T>
) => void;

Parameter	Type	Description
data	EventTypeMap[T]	The event data specific to the event type
internalRawEvent	InternalRawEvent<T>	The raw event data received from the server

InternalRawEvent

Interface representing the raw event data received from the server.

interface InternalRawEvent<T extends keyof EventTypeMap> {
  id: string;
  event: T;
  data: EventTypeMap[T];
  timestamp: number;
  guaranteeType: MessagingServiceGuaranteeType;
}

Property	Type	Description
id	string	The unique identifier of the event
event	T	The event name
data	EventTypeMap[T]	The event data
timestamp	number	The timestamp when the event was generated
guaranteeType	MessagingServiceGuaranteeType	The guarantee type of the event

MessagingServiceGuaranteeType

An enum defining different guarantee levels for message delivery.

enum MessagingServiceGuaranteeType {
  FIRE_FORGET = 'FIRE_FORGET',
  BEST_EFFORT = 'BEST_EFFORT',
  RELIABLE_DELIVERY = 'RELIABLE_DELIVERY',
  RELIABLE_RECEIPT = 'RELIABLE_RECEIPT',
}

Guarantee Type	Description
FIRE_FORGET	Message is delivered to the player only if connected. If disconnected, the message is discarded.
BEST_EFFORT	Message is delivered if connected. If disconnected, the message is stored and delivered on the next connection.
RELIABLE_DELIVERY	Same as BEST_EFFORT, but waits for ACK notification before marking as delivered.
RELIABLE_RECEIPT	Same as BEST_EFFORT, but the origin microservice is notified when the message is delivered.

EmitterTypeMap

A mapping of emitter event names to their corresponding data types.

interface EmitterTypeMap {
  'send:ack': AckMessageEmitter;
  'send:analytics:event': AnalyticsTrackingEventEmitter;
}

Event Name	Data Type	Description
send:ack	AckMessageEmitter	Acknowledgment message emitter for confirming receipt of events
send:analytics:event	AnalyticsTrackingEventEmitter	Analytics tracking event emitter

AckMessageEmitter

Interface for acknowledgment messages.

interface AckMessageEmitter {
  messageId: string;
}

Property	Type	Description
messageId	string	The ID of the message being acknowledged

AnalyticsTrackingEventEmitter

Interface for analytics tracking events.

interface AnalyticsTrackingEventEmitter {
  eventName: string;
  properties: Record<string, any>;
}

Property	Type	Description
eventName	string	The name of the analytics event
properties	Record<string, any>	Additional properties for the analytics event