Best Kissmetrics Customer Engagement Phone Validation API & Email Verification Integration 2025

// Enhanced Kissmetrics integration with 1lookup validation
// Initialize Kissmetrics
var _kmq = _kmq || [];
var _kmk = _kmk || 'YOUR_KISSMETRICS_API_KEY';
function _kms(u){
  setTimeout(function(){
    var d = document, f = d.getElementsByTagName('script')[0],
    s = d.createElement('script');
    s.type = 'text/javascript'; s.async = true; s.src = u;
    f.parentNode.insertBefore(s, f);
  }, 1);
}
_kms('//i.kissmetrics.com/i.js');
_kms('//scripts.kissmetrics.com/' + _kmk + '.2.js');

// Enhanced customer identification with contact validation
window.identifyKissmetricsCustomerWithValidation = async function(customerId, customerProperties) {
  try {
    // Validate customer contact information if present
    if (customerProperties.email || customerProperties.phone) {
      const validationData = await validateCustomerContactForKissmetrics({
        phone: customerProperties.phone,
        email: customerProperties.email
      });
      
      // Enhance customer properties with validation results
      const enhancedProperties = {
        ...customerProperties,
        // Phone validation properties
        'Phone Validation Status': validationData.phone?.is_valid ? 'Valid' : 'Invalid',
        'Phone Carrier': validationData.phone?.carrier_details?.name || '',
        'Phone Line Type': validationData.phone?.carrier_details?.type || '',
        'Phone Country': validationData.phone?.location_details?.country || '',
        'Phone Region': validationData.phone?.location_details?.region || '',
        'Phone Risk Level': validationData.phone?.risk_assessment?.risk_level || '',
        // Email validation properties
        'Email Validation Status': validationData.email?.is_valid ? 'Valid' : 'Invalid',
        'Email Deliverability': validationData.email?.deliverability?.status || '',
        'Email Domain Type': validationData.email?.domain_details?.type || '',
        'Email Risk Level': validationData.email?.risk_assessment?.risk_level || '',
        // Customer engagement specific enhancements
        'Customer Quality Score': calculateEngagementCustomerQuality(validationData),
        'Customer Quality Tier': determineEngagementCustomerTier(validationData),
        'Is Verified Customer': isVerifiedEngagementCustomer(validationData),
        'Engagement Validation Timestamp': new Date().toISOString(),
        // Kissmetrics-specific properties
        'Kissmetrics Validation Version': '2025.1',
        'Engagement Research Segment': determineEngagementResearchSegment(validationData),
        'Customer Engagement Potential': calculateEngagementPotential(validationData)
      };
      
      // Identify customer with enhanced properties in Kissmetrics
      _kmq.push(['identify', customerId]);
      _kmq.push(['set', enhancedProperties]);
      
      // Track validation event for engagement analytics
      _kmq.push(['record', 'Customer Contact Validated', {
        'Validation Type': 'engagement_enhancement',
        'Phone Valid': validationData.phone?.is_valid,
        'Email Valid': validationData.email?.is_valid,
        'Quality Score': enhancedProperties['Customer Quality Score'],
        'Engagement Segment': enhancedProperties['Engagement Research Segment']
      }]);
      
    } else {
      // Standard identification without validation
      _kmq.push(['identify', customerId]);
      _kmq.push(['set', customerProperties]);
    }
    
  } catch (error) {
    console.error('Kissmetrics customer validation error:', error);
    // Fallback to standard identification
    _kmq.push(['identify', customerId]);
    _kmq.push(['set', {
      ...customerProperties,
      'Validation Error': true,
      'Validation Error Message': error.message
    }]);
  }
};

// Contact validation function optimized for customer engagement
async function validateCustomerContactForKissmetrics(contactData) {
  const response = await fetch('https://app.1lookup.io/api/v1/validate', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer YOUR_1LOOKUP_API_KEY',
      'Content-Type': 'application/json',
      'X-Integration': 'kissmetrics-engagement'
    },
    body: JSON.stringify({
      ...contactData,
      include_carrier_details: true,
      include_location_details: true,
      include_risk_assessment: true,
      engagement_context: true
    })
  });
  
  if (!response.ok) {
    throw new Error(`Customer engagement validation failed: ${response.status}`);
  }
  
  return await response.json();
}

// Calculate customer engagement-specific quality score
function calculateEngagementCustomerQuality(validationData) {
  let score = 0;
  
  // Email scoring for customer engagement
  if (validationData.email?.is_valid) score += 40;
  if (validationData.email?.deliverability?.status === 'deliverable') score += 15;
  
  // Phone scoring for customer engagement
  if (validationData.phone?.is_valid) score += 35;
  if (validationData.phone?.risk_assessment?.risk_level === 'low') score += 10;
  
  return Math.min(100, score);
}

// Determine customer engagement tier
function determineEngagementCustomerTier(validationData) {
  const qualityScore = calculateEngagementCustomerQuality(validationData);
  
  if (qualityScore >= 80) return 'premium_engagement_customer';
  if (qualityScore >= 60) return 'high_engagement_customer';
  if (qualityScore >= 40) return 'standard_engagement_customer';
  return 'basic_engagement_customer';
}

// Calculate customer engagement potential
function calculateEngagementPotential(validationData) {
  let potential = 50; // Base potential
  
  if (validationData.phone?.is_valid) potential += 20;
  if (validationData.email?.is_valid) potential += 20;
  if (validationData.email?.deliverability?.status === 'deliverable') potential += 10;
  
  return Math.min(100, potential);
}

// Enhanced Kissmetrics server-side integration with contact validation
const axios = require('axios');

class KissmetricsEngagementValidator {
  constructor(apiKey, lookupApiKey) {
    this.apiKey = apiKey;
    this.lookupApiKey = lookupApiKey;
    this.baseUrl = 'https://trk.kissmetrics.com/e';
    this.customerCache = new Map();
  }
  
  async trackEngagementEventWithValidation(customerId, eventName, eventProperties, customerContext) {
    try {
      // Get or validate customer contact data
      let customerValidation = this.customerCache.get(customerId);
      if (!customerValidation) {
        customerValidation = await this.validateCustomerForEngagement(customerContext);
        this.customerCache.set(customerId, customerValidation);
      }
      
      // Calculate engagement event quality
      const eventQuality = this.calculateEngagementEventQuality(
        eventName,
        eventProperties,
        customerValidation
      );
      
      // Enhanced engagement event properties
      const enhancedEventProperties = {
        ...eventProperties,
        // Customer validation context
        'Customer Quality Score': customerValidation.quality_score,
        'Customer Quality Tier': customerValidation.tier,
        'Customer Verification Status': customerValidation.verification_status,
        // Engagement event quality
        'Event Quality Score': eventQuality.score,
        'Event Reliability': eventQuality.reliability,
        'Engagement Value Tier': eventQuality.value_tier,
        'Is High Value Event': eventQuality.is_high_value,
        // Customer engagement insights
        'Engagement Attribution Weight': eventQuality.attribution_weight,
        'Customer Engagement Segment': customerValidation.engagement_segment,
        'Customer Lifetime Value Tier': customerValidation.ltv_tier,
        // Geographic and demographic context
        'Customer Country': customerValidation.country,
        'Customer Region': customerValidation.region,
        'Carrier Type': customerValidation.carrier_type,
        'Device Trust Score': eventQuality.device_trust,
        // Fraud and quality indicators
        'Fraud Risk Indicators': eventQuality.fraud_indicators.join(','),
        'Engagement Likelihood': eventQuality.engagement_likelihood,
        'Customer Retention Probability': eventQuality.retention_probability
      };
      
      // Track enhanced engagement event
      await this.sendKissmetricsEvent(customerId, eventName, enhancedEventProperties);
      
      // Track engagement quality analytics
      await this.sendKissmetricsEvent(customerId, 'Engagement Quality Analytics', {
        'Original Event': eventName,
        'Quality Score': eventQuality.score,
        'Customer Tier': customerValidation.tier,
        'Engagement Value': eventQuality.engagement_value
      });
      
      return { success: true, eventQuality, customerValidation };
      
    } catch (error) {
      console.error('Engagement event validation error:', error);
      
      // Fallback tracking
      await this.sendKissmetricsEvent(customerId, eventName, {
        ...eventProperties,
        'Validation Error': true,
        'Error Type': 'engagement_validation_failed'
      });
      
      return { success: false, error: error.message };
    }
  }
  
  async validateCustomerForEngagement(customerContext) {
    try {
      const contactData = {
        phone: customerContext.phone,
        email: customerContext.email
      };
      
      if (!contactData.phone && !contactData.email) {
        return this.getDefaultEngagementValidation();
      }
      
      const response = await axios.post('https://app.1lookup.io/api/v1/validate', contactData, {
        headers: {
          'Authorization': `Bearer ${this.lookupApiKey}`,
          'Content-Type': 'application/json',
          'X-Integration': 'kissmetrics-server'
        }
      });
      
      const validation = response.data;
      
      return {
        quality_score: this.calculateEngagementQualityScore(validation),
        tier: this.determineEngagementTier(validation),
        verification_status: this.getEngagementVerificationStatus(validation),
        phone_verified: validation.phone?.is_valid,
        email_verified: validation.email?.is_valid,
        fraud_risk_level: validation.fraud_risk_level,
        country: validation.phone?.location_details?.country,
        region: validation.phone?.location_details?.region,
        carrier_type: validation.phone?.carrier_details?.type,
        engagement_segment: this.determineEngagementSegment(validation),
        ltv_tier: this.predictEngagementLTVTier(validation)
      };
      
    } catch (error) {
      console.error('Customer engagement validation error:', error);
      return this.getDefaultEngagementValidation();
    }
  }
  
  calculateEngagementEventQuality(eventName, eventProperties, customerValidation) {
    let score = 0;
    let reliability = 0;
    let attributionWeight = 1.0;
    let engagementValue = 0;
    
    // Base score from customer validation
    const customerQuality = customerValidation.quality_score || 0;
    score = customerQuality * 0.6; // 60% weight from customer quality
    
    // Event-specific scoring for engagement
    const engagementEventMultipliers = {
      'Viewed Page': 1.0,
      'Clicked Button': 1.1,
      'Downloaded Content': 1.3,
      'Started Trial': 1.7,
      'Completed Onboarding': 1.5,
      'Made Purchase': 2.0,
      'Subscribed': 2.2,
      'Referred Friend': 1.8,
      'Left Feedback': 1.4,
      'Renewed Subscription': 2.5
    };
    
    score *= (engagementEventMultipliers[eventName] || 1.0);
    
    // Engagement value calculation
    engagementValue = this.calculateEventEngagementValue(eventName, eventProperties, customerValidation);
    
    // Reliability scoring
    reliability = this.calculateEventEngagementReliability(customerValidation, eventProperties);
    
    // Attribution weight based on customer verification
    if (customerValidation.phone_verified) attributionWeight += 0.3;
    if (customerValidation.email_verified) attributionWeight += 0.3;
    if (customerValidation.fraud_risk_level === 'low') attributionWeight += 0.4;
    
    return {
      score: Math.min(100, score),
      reliability: Math.min(100, reliability),
      value_tier: this.determineEngagementValueTier(engagementValue),
      is_high_value: score >= 70 && reliability >= 80,
      attribution_weight: Math.min(2.0, attributionWeight),
      engagement_value: engagementValue,
      engagement_likelihood: this.calculateEngagementLikelihood(customerValidation, eventName),
      retention_probability: this.calculateRetentionProbability(customerValidation, eventName),
      device_trust: this.calculateDeviceTrust(eventProperties, customerValidation),
      fraud_indicators: this.detectEventFraudIndicators(eventProperties, customerValidation)
    };
  }
  
  async sendKissmetricsEvent(customerId, eventName, properties) {
    const params = new URLSearchParams({
      '_k': this.apiKey,
      '_p': customerId,
      '_n': eventName,
      '_t': Math.floor(Date.now() / 1000)
    });
    
    // Add properties as URL parameters
    Object.keys(properties).forEach(key => {
      if (properties[key] !== undefined && properties[key] !== null) {
        params.append(key, properties[key].toString());
      }
    });
    
    try {
      await axios.get(`${this.baseUrl}?${params.toString()}`);
    } catch (error) {
      console.error('Kissmetrics event tracking error:', error);
      throw error;
    }
  }
  
  calculateEventEngagementValue(eventName, eventProperties, customerValidation) {
    let baseValue = 0;
    
    // Event value mapping for engagement
    const eventValues = {
      'Viewed Page': 1,
      'Clicked Button': 2,
      'Downloaded Content': 5,
      'Started Trial': 15,
      'Completed Onboarding': 10,
      'Made Purchase': 25,
      'Subscribed': 30,
      'Referred Friend': 20,
      'Left Feedback': 8,
      'Renewed Subscription': 35
    };
    
    baseValue = eventValues[eventName] || 1;
    
    // Customer quality multiplier
    const qualityMultiplier = customerValidation.quality_score / 100;
    
    // Revenue-based adjustment if available
    if (eventProperties.revenue) {
      baseValue += parseFloat(eventProperties.revenue) * 0.1;
    }
    
    return Math.round(baseValue * qualityMultiplier * 100) / 100;
  }
  
  determineEngagementSegment(validation) {
    const qualityScore = this.calculateEngagementQualityScore(validation);
    const hasPhone = validation.phone?.is_valid;
    const hasEmail = validation.email?.is_valid;
    
    if (qualityScore >= 80 && hasPhone && hasEmail) {
      return 'premium_multi_channel_engagement';
    } else if (qualityScore >= 70) {
      return 'high_value_verified_engagement';
    } else if (qualityScore >= 50) {
      return 'standard_engagement';
    } else {
      return 'basic_engagement_prospect';
    }
  }
}

// Advanced customer engagement tracking with contact validation analytics
class KissmetricsEngagementTracker {
  constructor(apiKey, lookupApiKey) {
    this.apiKey = apiKey;
    this.lookupApiKey = lookupApiKey;
    this.engagementCache = new Map();
    this.engagementThresholds = {
      high: 80,
      medium: 60,
      low: 40,
      minimal: 0
    };
  }
  
  async trackCustomerEngagementWithValidation(customerId, engagementEvent, engagementData) {
    try {
      // Get customer validation data
      const customerValidation = await this.getCustomerValidationData(customerId);
      
      // Calculate comprehensive engagement quality
      const engagementQuality = this.calculateComprehensiveEngagementQuality(
        engagementEvent,
        engagementData,
        customerValidation
      );
      
      // Enhanced customer engagement event
      const enhancedEngagementEvent = {
        customer_id: customerId,
        engagement_event: engagementEvent,
        // Customer validation insights
        customer_quality_score: customerValidation.quality_score,
        customer_quality_tier: customerValidation.tier,
        customer_verification_status: customerValidation.verification_status,
        customer_authenticity_score: customerValidation.authenticity_score,
        // Engagement quality metrics
        engagement_quality_score: engagementQuality.overall_score,
        engagement_reliability: engagementQuality.reliability,
        engagement_value_tier: engagementQuality.value_tier,
        is_high_value_engagement: engagementQuality.is_high_value,
        // Behavioral insights
        engagement_authenticity: engagementQuality.engagement_authenticity,
        customer_engagement_potential: engagementQuality.engagement_potential,
        retention_impact_score: engagementQuality.retention_impact,
        // Customer journey context
        journey_stage: this.determineJourneyStage(engagementEvent, customerValidation),
        engagement_progression: this.calculateEngagementProgression(customerId, engagementEvent),
        customer_lifecycle_stage: this.determineLifecycleStage(customerValidation, engagementData),
        // Attribution and optimization
        engagement_attribution_weight: engagementQuality.attribution_weight,
        automation_trigger_weight: engagementQuality.automation_weight,
        optimization_priority: engagementQuality.optimization_priority,
        // Geographic and demographic insights
        customer_geographic_region: customerValidation.region,
        device_trust_score: engagementQuality.device_trust,
        engagement_anomaly_score: engagementQuality.anomaly_score
      };
      
      // Track enhanced engagement event in Kissmetrics
      await this.sendKissmetricsEngagementEvent(customerId, engagementEvent, enhancedEngagementEvent);
      
      // Track engagement quality analytics
      await this.trackEngagementQualityAnalytics(customerId, engagementQuality, customerValidation);
      
      // Update customer engagement profile
      await this.updateCustomerEngagementProfile(customerId, engagementQuality);
      
      // Trigger engagement automation if applicable
      await this.triggerEngagementAutomation(customerId, engagementQuality, engagementEvent);
      
      return enhancedEngagementEvent;
      
    } catch (error) {
      console.error('Customer engagement tracking error:', error);
      
      // Fallback engagement tracking
      await this.sendKissmetricsEngagementEvent(customerId, engagementEvent, {
        ...engagementData,
        validation_error: true,
        error_type: 'engagement_validation_failed'
      });
      
      return { error: error.message };
    }
  }
  
  calculateComprehensiveEngagementQuality(engagementEvent, engagementData, customerValidation) {
    let overallScore = 0;
    let reliability = 0;
    let engagementAuthenticity = 0;
    
    // Customer quality contribution (50%)
    const customerQuality = customerValidation.quality_score || 0;
    overallScore = customerQuality * 0.5;
    
    // Engagement event contribution (30%)
    const eventScore = this.calculateEventEngagementScore(engagementEvent, engagementData);
    overallScore += eventScore * 0.3;
    
    // Customer history contribution (20%)
    const historyScore = this.calculateCustomerHistoryScore(customerValidation);
    overallScore += historyScore * 0.2;
    
    // Calculate reliability
    reliability = this.calculateEngagementReliability(customerValidation, engagementData);
    
    // Calculate engagement authenticity
    engagementAuthenticity = this.calculateEngagementAuthenticity(
      customerValidation,
      engagementEvent,
      engagementData
    );
    
    // Determine engagement value tier
    const valueTier = this.determineEngagementValueTier(overallScore, reliability);
    
    // Calculate attribution and automation weights
    const attributionWeight = this.calculateEngagementAttributionWeight(customerValidation);
    const automationWeight = this.calculateAutomationWeight(customerValidation, engagementEvent);
    
    return {
      overall_score: Math.min(100, overallScore),
      reliability: Math.min(100, reliability),
      value_tier: valueTier,
      is_high_value: overallScore >= 70 && reliability >= 80,
      engagement_authenticity: Math.min(100, engagementAuthenticity),
      engagement_potential: this.calculateEngagementPotential(customerValidation, engagementEvent),
      retention_impact: this.calculateRetentionImpact(customerValidation, engagementEvent),
      attribution_weight: attributionWeight,
      automation_weight: automationWeight,
      optimization_priority: this.calculateOptimizationPriority(overallScore, engagementEvent),
      device_trust: this.calculateDeviceTrust(engagementData, customerValidation),
      anomaly_score: this.calculateEngagementAnomalyScore(engagementData),
      fraud_indicators: this.detectEngagementFraudIndicators(engagementData, customerValidation),
      engagement_likelihood: this.calculateFutureEngagementLikelihood(customerValidation),
      retention_probability: this.calculateCustomerRetentionProbability(customerValidation, engagementEvent)
    };
  }
  
  async sendKissmetricsEngagementEvent(customerId, eventName, properties) {
    const params = new URLSearchParams({
      '_k': this.apiKey,
      '_p': customerId,
      '_n': eventName,
      '_t': Math.floor(Date.now() / 1000)
    });
    
    // Add enhanced properties
    Object.keys(properties).forEach(key => {
      if (properties[key] !== undefined && properties[key] !== null) {
        // Kissmetrics has specific formatting requirements
        const formattedKey = key.replace(/s+/g, ' ').trim();
        params.append(formattedKey, properties[key].toString());
      }
    });
    
    try {
      await axios.get(`${this.baseUrl}?${params.toString()}`);
    } catch (error) {
      console.error('Kissmetrics engagement event error:', error);
      throw error;
    }
  }
  
  async triggerEngagementAutomation(customerId, engagementQuality, engagementEvent) {
    try {
      // Trigger automated campaigns based on engagement quality
      if (engagementQuality.is_high_value && engagementQuality.retention_probability >= 80) {
        await this.sendKissmetricsEngagementEvent(customerId, 'High Value Engagement Trigger', {
          'Trigger Type': 'high_value_automation',
          'Quality Score': engagementQuality.overall_score,
          'Retention Probability': engagementQuality.retention_probability,
          'Recommended Action': 'upsell_premium_features'
        });
      }
      
      // Trigger retention campaigns for at-risk customers
      if (engagementQuality.retention_probability < 50 && engagementQuality.reliability >= 70) {
        await this.sendKissmetricsEngagementEvent(customerId, 'Retention Risk Trigger', {
          'Trigger Type': 'retention_automation',
          'Risk Level': 'high',
          'Quality Score': engagementQuality.overall_score,
          'Recommended Action': 'engagement_recovery_campaign'
        });
      }
      
      // Trigger engagement enhancement for verified customers
      if (engagementQuality.engagement_potential >= 75) {
        await this.sendKissmetricsEngagementEvent(customerId, 'Engagement Enhancement Trigger', {
          'Trigger Type': 'engagement_optimization',
          'Potential Score': engagementQuality.engagement_potential,
          'Customer Tier': engagementQuality.value_tier,
          'Recommended Action': 'personalized_engagement_campaign'
        });
      }
      
    } catch (error) {
      console.error('Engagement automation trigger error:', error);
    }
  }
  
  calculateEventEngagementScore(engagementEvent, engagementData) {
    let score = 0;
    
    // Base event value
    const eventValues = {
      'Viewed Page': 5,
      'Clicked Button': 8,
      'Downloaded Content': 15,
      'Started Trial': 25,
      'Completed Onboarding': 20,
      'Made Purchase': 35,
      'Subscribed': 40,
      'Referred Friend': 30,
      'Left Feedback': 12,
      'Renewed Subscription': 45
    };
    
    score = eventValues[engagementEvent] || 5;
    
    // Revenue impact
    if (engagementData.revenue) {
      score += Math.min(20, parseFloat(engagementData.revenue) * 0.1);
    }
    
    // Engagement frequency impact
    if (engagementData.frequency && engagementData.frequency === 'repeat') {
      score += 10;
    }
    
    return Math.min(100, score);
  }
  
  determineJourneyStage(engagementEvent, customerValidation) {
    const eventStageMapping = {
      'Viewed Page': 'awareness',
      'Downloaded Content': 'consideration',
      'Started Trial': 'trial',
      'Completed Onboarding': 'activation',
      'Made Purchase': 'conversion',
      'Subscribed': 'commitment',
      'Referred Friend': 'advocacy',
      'Renewed Subscription': 'retention'
    };
    
    const baseStage = eventStageMapping[engagementEvent] || 'unknown';
    
    // Enhance stage with validation insights
    if (customerValidation.quality_score >= 80) {
      return `qualified_${baseStage}`;
    } else if (customerValidation.quality_score >= 60) {
      return `verified_${baseStage}`;
    } else {
      return `standard_${baseStage}`;
    }
  }
}

// Advanced customer lifecycle tracking with contact validation for Kissmetrics
class KissmetricsLifecycleTracker {
  constructor(apiKey, lookupApiKey) {
    this.apiKey = apiKey;
    this.lookupApiKey = lookupApiKey;
    this.lifecycleStages = {
      'prospect': { weight: 1.0, automation_triggers: ['welcome_sequence'] },
      'trial': { weight: 1.3, automation_triggers: ['trial_nurture', 'conversion_optimization'] },
      'customer': { weight: 1.8, automation_triggers: ['onboarding', 'feature_adoption'] },
      'advocate': { weight: 2.5, automation_triggers: ['referral_program', 'loyalty_rewards'] },
      'at_risk': { weight: 0.8, automation_triggers: ['retention_campaign', 'win_back'] }
    };
  }
  
  async trackLifecycleTransitionWithValidation(customerId, fromStage, toStage, transitionData) {
    try {
      // Validate customer for lifecycle transition
      const customerValidation = await this.validateCustomerForLifecycle(customerId, transitionData);
      
      // Calculate lifecycle transition quality
      const transitionQuality = this.calculateLifecycleTransitionQuality(
        fromStage,
        toStage,
        customerValidation,
        transitionData
      );
      
      // Enhanced lifecycle transition event
      const lifecycleTransitionEvent = {
        customer_id: customerId,
        from_stage: fromStage,
        to_stage: toStage,
        transition_date: new Date().toISOString(),
        // Customer validation insights
        customer_quality_score: customerValidation.quality_score,
        customer_verification_level: customerValidation.verification_level,
        contact_validation_confidence: customerValidation.confidence,
        // Transition quality metrics
        transition_quality_score: transitionQuality.score,
        transition_reliability: transitionQuality.reliability,
        transition_authenticity: transitionQuality.authenticity,
        lifecycle_progression_quality: transitionQuality.progression_quality,
        // Customer value metrics
        customer_lifetime_value_tier: transitionQuality.ltv_tier,
        predicted_retention_rate: transitionQuality.retention_prediction,
        engagement_potential_score: transitionQuality.engagement_potential,
        conversion_probability: transitionQuality.conversion_probability,
        // Automation and optimization
        automation_trigger_weight: transitionQuality.automation_weight,
        lifecycle_optimization_priority: transitionQuality.optimization_priority,
        recommended_automation_actions: transitionQuality.automation_actions.join(','),
        // Risk and quality assessment
        churn_risk_level: transitionQuality.churn_risk,
        fraud_risk_indicators: transitionQuality.fraud_indicators.join(','),
        lifecycle_anomaly_score: transitionQuality.anomaly_score,
        // Geographic and demographic context
        customer_region: customerValidation.region,
        customer_market_segment: transitionQuality.market_segment
      };
      
      // Track lifecycle transition in Kissmetrics
      await this.sendKissmetricsEvent(customerId, 'Lifecycle Transition', lifecycleTransitionEvent);
      
      // Track transition quality analytics
      await this.sendKissmetricsEvent(customerId, 'Lifecycle Quality Analytics', {
        'Transition Type': `${fromStage}_to_${toStage}`,
        'Quality Score': transitionQuality.score,
        'Customer Tier': customerValidation.tier,
        'Transition Value': transitionQuality.transition_value
      });
      
      // Update customer lifecycle profile
      await this.updateCustomerLifecycleProfile(customerId, toStage, transitionQuality);
      
      // Trigger lifecycle-specific automation
      await this.triggerLifecycleAutomation(customerId, toStage, transitionQuality);
      
      return lifecycleTransitionEvent;
      
    } catch (error) {
      console.error('Lifecycle transition tracking error:', error);
      
      // Fallback lifecycle tracking
      await this.sendKissmetricsEvent(customerId, 'Lifecycle Transition', {
        from_stage: fromStage,
        to_stage: toStage,
        validation_error: true,
        error_type: 'lifecycle_validation_failed'
      });
      
      return { error: error.message };
    }
  }
  
  calculateLifecycleTransitionQuality(fromStage, toStage, customerValidation, transitionData) {
    let score = 0;
    let reliability = 0;
    let authenticity = 0;
    
    // Base score from customer validation
    const customerQuality = customerValidation.quality_score || 0;
    score = customerQuality * 0.4; // 40% from customer quality
    
    // Transition value scoring
    const transitionValue = this.calculateTransitionValue(fromStage, toStage);
    score += transitionValue * 0.3; // 30% from transition value
    
    // Transition context scoring
    const contextScore = this.calculateTransitionContextScore(transitionData);
    score += contextScore * 0.3; // 30% from context
    
    // Calculate reliability
    reliability = this.calculateTransitionReliability(customerValidation, transitionData);
    
    // Calculate authenticity
    authenticity = this.calculateTransitionAuthenticity(customerValidation, fromStage, toStage);
    
    // Calculate various quality metrics
    const progressionQuality = this.calculateProgressionQuality(fromStage, toStage, customerValidation);
    const ltvTier = this.calculateLTVTierForTransition(customerValidation, toStage);
    const retentionPrediction = this.calculateRetentionPrediction(customerValidation, toStage);
    
    return {
      score: Math.min(100, score),
      reliability: Math.min(100, reliability),
      authenticity: Math.min(100, authenticity),
      progression_quality: progressionQuality,
      ltv_tier: ltvTier,
      retention_prediction: retentionPrediction,
      engagement_potential: this.calculateLifecycleEngagementPotential(customerValidation, toStage),
      conversion_probability: this.calculateLifecycleConversionProbability(customerValidation, toStage),
      automation_weight: this.calculateLifecycleAutomationWeight(customerValidation, toStage),
      optimization_priority: this.calculateLifecycleOptimizationPriority(score, toStage),
      churn_risk: this.calculateLifecycleChurnRisk(customerValidation, toStage),
      fraud_indicators: this.detectLifecycleFraudIndicators(customerValidation, transitionData),
      anomaly_score: this.calculateLifecycleAnomalyScore(fromStage, toStage, transitionData),
      transition_value: this.calculateTransitionBusinessValue(fromStage, toStage, customerValidation),
      automation_actions: this.recommendAutomationActions(toStage, customerValidation),
      market_segment: this.determineMarketSegment(customerValidation, toStage)
    };
  }
  
  async validateCustomerForLifecycle(customerId, transitionData) {
    try {
      // Extract contact information from transition data or customer profile
      const contactData = {
        phone: transitionData.phone || transitionData.customer_phone,
        email: transitionData.email || transitionData.customer_email
      };
      
      if (!contactData.phone && !contactData.email) {
        return this.getDefaultLifecycleValidation();
      }
      
      const response = await axios.post('https://app.1lookup.io/api/v1/validate', contactData, {
        headers: {
          'Authorization': `Bearer ${this.lookupApiKey}`,
          'Content-Type': 'application/json',
          'X-Integration': 'kissmetrics-lifecycle'
        }
      });
      
      const validation = response.data;
      
      return {
        quality_score: this.calculateLifecycleQualityScore(validation),
        tier: this.determineLifecycleTier(validation),
        verification_level: this.getLifecycleVerificationLevel(validation),
        confidence: this.calculateLifecycleConfidence(validation),
        phone_verified: validation.phone?.is_valid,
        email_verified: validation.email?.is_valid,
        fraud_risk_level: validation.fraud_risk_level,
        region: validation.phone?.location_details?.region,
        country: validation.phone?.location_details?.country
      };
      
    } catch (error) {
      console.error('Customer lifecycle validation error:', error);
      return this.getDefaultLifecycleValidation();
    }
  }
}