// src/hooks/usePostHog.js
import { useCallback } from 'react';
import {
  getPostHog,
  trackEvent,
  trackPageView,
  identifyUser,
  setUserProperties,
  resetUser,
  optIn,
  optOut,
  hasOptedOut,
  getFeatureFlag,
  isFeatureEnabled,
} from '../lib/posthog';

/**
 * Custom hook to access PostHog functionality
 * Provides convenient methods for tracking events and managing user sessions
 *
 * @returns {object} PostHog methods
 */
export const usePostHog = () => {
  // Get PostHog instance
  const posthog = getPostHog();

  // Track custom event
  const track = useCallback((eventName, properties = {}) => {
    trackEvent(eventName, properties);
  }, []);

  // Track page view
  const trackPage = useCallback((pagePath, properties = {}) => {
    trackPageView(pagePath, properties);
  }, []);

  // Identify user
  const identify = useCallback((userId, userProperties = {}) => {
    identifyUser(userId, userProperties);
  }, []);

  // Set user properties
  const setProperties = useCallback((properties) => {
    setUserProperties(properties);
  }, []);

  // Reset user session (logout)
  const reset = useCallback(() => {
    resetUser();
  }, []);

  // Opt out of tracking
  const optOutTracking = useCallback(() => {
    optOut();
  }, []);

  // Opt in to tracking
  const optInTracking = useCallback(() => {
    optIn();
  }, []);

  // Check if user has opted out
  const isOptedOut = useCallback(() => {
    return hasOptedOut();
  }, []);

  // Get feature flag value
  const getFlag = useCallback((flagKey, defaultValue = false) => {
    return getFeatureFlag(flagKey, defaultValue);
  }, []);

  // Check if feature is enabled
  const isEnabled = useCallback((flagKey) => {
    return isFeatureEnabled(flagKey);
  }, []);

  return {
    // Core PostHog instance
    posthog,

    // Tracking methods
    track,
    trackPage,

    // User management
    identify,
    setProperties,
    reset,

    // Privacy controls
    optOut: optOutTracking,
    optIn: optInTracking,
    isOptedOut,

    // Feature flags
    getFlag,
    isEnabled,
  };
};

export default usePostHog;