Tax Status Certificate (CSF)

{
  "subject": {
    "identifier": "GACJ841128A87"
  },
  "credentials": {
    "SAT": {
      "type": "USERNAME_PASSWORD",
      "username": "GACJ841128A87", 
      "password": "CIEC_PASSWORD"
    }
  },
  "options": {
    "informationType": "TAX_STATUS",
    "period": {
      "from": "2024-01-01",
      "to": "2024-01-31"
    }
  }
}

// Automated supplier verification using CSF
class SupplierVerificationService {
  async verifySupplier(supplierRFC) {
    try {
      // Extract latest CSF
      const extraction = await this.createTaxStatusExtraction(supplierRFC);
      const csf = await this.waitForExtraction(extraction.publicId);
      
      // Perform verification checks
      const verification = {
        rfc: supplierRFC,
        verificationDate: new Date(),
        checks: {
          activeStatus: this.checkActiveStatus(csf),
          validRegime: this.checkTaxRegime(csf),
          complianceStatus: this.checkCompliance(csf),
          addressVerification: this.checkAddress(csf)
        },
        riskAssessment: this.assessRisk(csf),
        approved: false
      };
      
      // Calculate overall approval
      verification.approved = Object.values(verification.checks)
        .every(check => check.passed);
      
      return verification;
    } catch (error) {
      return {
        rfc: supplierRFC,
        error: error.message,
        approved: false
      };
    }
  }
  
  checkActiveStatus(csf) {
    return {
      passed: csf.taxStatus === 'ACTIVE',
      message: csf.taxStatus === 'ACTIVE' 
        ? 'Taxpayer is active' 
        : `Taxpayer status: ${csf.taxStatus}`
    };
  }
  
  checkTaxRegime(csf) {
    const validRegimes = ['601', '603', '605', '606', '612'];
    return {
      passed: validRegimes.includes(csf.taxRegime),
      message: `Tax regime: ${csf.taxRegime}`
    };
  }
  
  checkCompliance(csf) {
    return {
      passed: csf.outstandingObligations === 0 && 
              (!csf.penalties || csf.penalties.length === 0),
      message: csf.outstandingObligations > 0 
        ? 'Has outstanding obligations' 
        : 'Compliant'
    };
  }
}

// Extract key information from CSF PDF
class CSFProcessor {
  async processTaxStatusCertificate(pdfBuffer) {
    try {
      // Parse PDF content
      const pdfText = await this.extractTextFromPDF(pdfBuffer);
      
      // Extract structured data
      const csfData = {
        rfc: this.extractRFC(pdfText),
        legalName: this.extractLegalName(pdfText),
        commercialName: this.extractCommercialName(pdfText),
        taxRegime: this.extractTaxRegime(pdfText),
        fiscalAddress: this.extractFiscalAddress(pdfText),
        economicActivities: this.extractEconomicActivities(pdfText),
        registrationDate: this.extractRegistrationDate(pdfText),
        issueDate: this.extractIssueDate(pdfText),
        taxStatus: this.extractTaxStatus(pdfText),
        outstandingObligations: this.extractOutstandingObligations(pdfText)
      };
      
      // Validate extracted data
      this.validateCSFData(csfData);
      
      return csfData;
    } catch (error) {
      throw new Error(`CSF processing failed: ${error.message}`);
    }
  }
  
  extractRFC(text) {
    const rfcPattern = /RFC:\s*([A-ZÑ&]{3,4}\d{6}[A-V1-9][A-Z1-9][0-9A])/;
    const match = text.match(rfcPattern);
    return match ? match[1] : null;
  }
  
  extractTaxRegime(text) {
    const regimePattern = /Régimen:\s*(\d{3})\s*-\s*([^\.]+)/;
    const match = text.match(regimePattern);
    return match ? {
      code: match[1],
      description: match[2].trim()
    } : null;
  }
  
  validateCSFData(data) {
    const required = ['rfc', 'legalName', 'taxRegime', 'issueDate'];
    const missing = required.filter(field => !data[field]);
    
    if (missing.length > 0) {
      throw new Error(`Missing required fields: ${missing.join(', ')}`);
    }
  }
}

// Update customer/supplier records with CSF data
async function updateBusinessPartnerStatus(rfc) {
  try {
    // Get latest CSF
    const csf = await extractAndProcessCSF(rfc);
    
    // Update in CRM/ERP system
    await updateBusinessPartner(rfc, {
      legalName: csf.legalName,
      commercialName: csf.commercialName,
      fiscalAddress: csf.fiscalAddress,
      taxRegime: csf.taxRegime.code,
      taxStatus: csf.taxStatus,
      lastVerification: csf.issueDate,
      complianceStatus: csf.outstandingObligations === 0 ? 'COMPLIANT' : 'NON_COMPLIANT',
      economicActivities: csf.economicActivities
    });
    
    // Create compliance alert if needed
    if (csf.outstandingObligations > 0) {
      await createComplianceAlert({
        partnerRFC: rfc,
        issue: 'Outstanding tax obligations detected',
        severity: 'HIGH',
        actionRequired: 'Review business relationship'
      });
    }
    
    console.log(`Updated business partner ${rfc} with latest CSF data`);
  } catch (error) {
    console.error(`Failed to update partner ${rfc}:`, error.message);
  }
}

// Schedule regular CSF updates for critical suppliers
class ComplianceMonitor {
  constructor() {
    this.criticalSuppliers = [];
    this.monitoringSchedule = new Map();
  }
  
  async scheduleCriticalSupplierMonitoring(rfc, frequency = 'weekly') {
    this.criticalSuppliers.push(rfc);
    
    const schedule = {
      rfc: rfc,
      frequency: frequency,
      lastCheck: null,
      nextCheck: this.calculateNextCheck(frequency),
      status: 'active'
    };
    
    this.monitoringSchedule.set(rfc, schedule);
    
    // Set up automated checking
    this.scheduleCSFCheck(rfc, frequency);
  }
  
  async performScheduledCheck(rfc) {
    try {
      const csf = await extractAndProcessCSF(rfc);
      const schedule = this.monitoringSchedule.get(rfc);
      
      schedule.lastCheck = new Date();
      schedule.nextCheck = this.calculateNextCheck(schedule.frequency);
      
      // Check for compliance issues
      const issues = this.identifyComplianceIssues(csf);
      
      if (issues.length > 0) {
        await this.alertComplianceTeam(rfc, issues);
      }
      
      // Update schedule
      this.monitoringSchedule.set(rfc, schedule);
      
    } catch (error) {
      console.error(`Scheduled CSF check failed for ${rfc}:`, error.message);
    }
  }
}