ERP Integration

class SAPIntegration {
  constructor(taxoApiKey, sapConfig) {
    this.taxoApiKey = taxoApiKey;
    this.sapConfig = sapConfig;
    this.sapClient = new SAPClient(sapConfig);
  }

  async processSATDocuments(rfc, period) {
    try {
      // Extract documents from SAT
      const extraction = await this.extractFromSAT(rfc, period);
      
      // Process each document
      for (const document of extraction.documents) {
        await this.processDocumentToSAP(document);
      }
      
      return { success: true, processed: extraction.documents.length };
    } catch (error) {
      console.error('SAP integration error:', error);
      throw error;
    }
  }

  async processDocumentToSAP(document) {
    // Download document from Taxo
    const documentData = await this.downloadDocument(document);
    
    // Transform to SAP format
    const sapDocument = this.transformToSAPFormat(documentData);
    
    // Post to SAP
    await this.postToSAP(sapDocument);
    
    // Update document status
    await this.updateDocumentStatus(document.id, 'POSTED_TO_SAP');
  }

  transformToSAPFormat(taxoDocument) {
    return {
      BUKRS: this.sapConfig.companyCode,
      GJAHR: new Date(taxoDocument.date).getFullYear(),
      BLDAT: taxoDocument.date,
      BLART: this.getDocumentType(taxoDocument.type),
      XBLNR: taxoDocument.invoiceNumber,
      WAERS: 'MXN',
      HEADER_TXT: `SAT Document ${taxoDocument.uuid}`,
      ACCOUNTGL: this.mapToGLAccount(taxoDocument),
      CURRENCY: 'MXN',
      AMT_DOCCUR: taxoDocument.total
    };
  }

  async postToSAP(sapDocument) {
    const bapi = 'BAPI_ACC_DOCUMENT_POST';
    const result = await this.sapClient.call(bapi, {
      DOCUMENTHEADER: sapDocument,
      ACCOUNTGL: sapDocument.ACCOUNTGL,
      CURRENCYAMOUNT: [{
        ITEMNO_ACC: '001',
        CURRENCY: sapDocument.WAERS,
        AMT_DOCCUR: sapDocument.AMT_DOCCUR
      }]
    });

    if (result.RETURN.TYPE === 'E') {
      throw new Error(`SAP posting failed: ${result.RETURN.MESSAGE}`);
    }

    return result.OBJ_KEY;
  }
}