@revrag-ai/embed-react-native/dist/module/events/agent-event-emitter.js

A powerful React Native library for integrating AI-powered voice agents into mobile applications. Features real-time voice communication, intelligent speech processing, customizable UI components, and comprehensive event handling for building conversation

"use strict";

/**
 * Agent Event Emitter
 * Handles listening to agent state changes (connection, disconnection, popup visibility)
 * Also sends agent events to the backend API
 */

import { getAgentData } from "../store/store.key.js";
import { APIService } from "../api/api.js";
import { buildEventPayload } from "../utils/constant.js";
import { EventKeys } from "./embed.types.js";
export class AgentEventEmitter {
  agentListeners = {};

  /**
   * Add an event listener for agent events
   * @param eventKey - The agent event to listen for
   * @param callback - Callback function to execute when event fires
   */
  on(eventKey, callback) {
    if (!this.agentListeners[eventKey]) {
      this.agentListeners[eventKey] = [];
    }
    this.agentListeners[eventKey]?.push(callback);
  }

  /**
   * Remove an event listener for agent events
   * @param eventKey - The agent event to stop listening to
   * @param callback - The callback function to remove
   */
  off(eventKey, callback) {
    if (!this.agentListeners[eventKey]) return;
    const index = this.agentListeners[eventKey]?.indexOf(callback);
    if (index !== undefined && index > -1) {
      this.agentListeners[eventKey]?.splice(index, 1);
    }
  }

  /**
   * Emit an agent event to all registered listeners AND send to backend
   * @param eventKey - The agent event to emit
   * @param data - Data to pass to listeners
   * @internal - Used internally by the library
   */
  async emit(eventKey, data) {
    // Trigger local event listeners first
    this.agentListeners[eventKey]?.forEach(callback => {
      try {
        callback(data);
      } catch (error) {
        console.error(`Error in agent event listener for ${eventKey}:`, error);
      }
    });

    // Send to backend API
    await this.sendToBackend(eventKey, data);
  }

  /**
   * Send agent event data to backend API
   * @param eventKey - The agent event type
   * @param data - Event data
   * @private
   */
  async sendToBackend(eventKey, data) {
    try {
      // Get user identity to include app_user_id
      const userIdentity = await getAgentData(EventKeys.USER_DATA);
      if (!userIdentity?.app_user_id) {
        console.warn(`[AgentEvent] Cannot send ${eventKey} to backend: User identity not found`);
        return;
      }

      // Prepare payload with app_user_id
      const payload = {
        ...data,
        app_user_id: userIdentity.app_user_id,
        eventKey: eventKey,
        eventType: 'agent_event'
      };

      // Send to API
      const apiService = APIService.getInstance();
      const paramsData = buildEventPayload(payload);
      const response = await apiService.updateUserData(paramsData);
      if (!response.success) {
        console.error(`[AgentEvent] Failed to send ${eventKey} to backend:`, response.error);
      }
    } catch (error) {
      console.error(`[AgentEvent] Error sending ${eventKey} to backend:`, error);
      // Fail silently - agent events should not break the app
    }
  }

  /**
   * Remove all listeners for a specific event
   * @param eventKey - The agent event to clear listeners for
   */
  removeAllListeners(eventKey) {
    if (eventKey) {
      delete this.agentListeners[eventKey];
    } else {
      this.agentListeners = {};
    }
  }
}
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