/**
* Data Migration Service
* Provides comprehensive data export and import functionality for contexts,
* sessions, templates, and system data with format conversion and validation
*/
import fs from 'fs/promises';
import path from 'path';
import { createReadStream, createWriteStream } from 'fs';
import { Transform, pipeline } from 'stream';
import { promisify } from 'util';
import { v4 as uuidv4 } from 'uuid';
import { z } from 'zod';
import { logger } from '../../utils/logger.js';
import { Context } from '../../types/entities/context.js';
import { Session } from '../../types/entities/session.js';
import { Template } from '../../types/entities/template.js';
const pipelineAsync = promisify(pipeline);
export interface ExportOptions {
format: 'json' | 'csv' | 'xml' | 'yaml' | 'markdown';
includeMetadata: boolean;
includeBinaryData: boolean;
compression?: 'gzip' | 'brotli' | 'none';
encryption?: {
enabled: boolean;
algorithm: 'aes-256-gcm' | 'aes-256-cbc';
key?: string;
};
filters?: {
dateRange?: {
start: Date;
end: Date;
};
types?: string[];
tags?: string[];
sessionIds?: string[];
importance?: string[];
};
splitLargeFiles?: {
enabled: boolean;
maxSizeBytes: number;
};
}
export interface ImportOptions {
format: 'json' | 'csv' | 'xml' | 'yaml' | 'markdown';
validateSchema: boolean;
skipDuplicates: boolean;
overwriteExisting: boolean;
batchSize: number;
dryRun: boolean;
mapping?: {
fieldMappings: Record<string, string>;
transformations: Array<{
field: string;
transformation: 'uppercase' | 'lowercase' | 'trim' | 'custom';
customFunction?: string;
}>;
};
errorHandling: 'strict' | 'lenient' | 'skip-errors';
}
export interface ExportResult {
success: boolean;
exportId: string;
filePath: string;
format: string;
recordCount: number;
fileSize: number;
duration: number;
checksumMd5: string;
error?: string;
metadata: {
exportedAt: Date;
exportedBy: string;
options: ExportOptions;
version: string;
};
}
export interface ImportResult {
success: boolean;
importId: string;
format: string;
processedRecords: number;
successfulRecords: number;
failedRecords: number;
skippedRecords: number;
duration: number;
errors: Array<{
record: number;
error: string;
data?: unknown;
}>;
validationErrors: Array<{
field: string;
value: unknown;
message: string;
}>;
duplicatesFound: number;
metadata: {
importedAt: Date;
importedBy: string;
sourceFile: string;
options: ImportOptions;
};
}
export interface MigrationProgress {
operationId: string;
type: 'export' | 'import';
status: 'pending' | 'running' | 'completed' | 'failed';
progress: number; // 0-100
currentStep: string;
totalSteps: number;
currentRecord: number;
totalRecords: number;
startTime: Date;
estimatedCompletion?: Date;
errors: string[];
}
export interface DataTemplate {
id: string;
name: string;
description: string;
version: string;
schema: {
type: 'context' | 'session' | 'template' | 'mixed';
fields: Array<{
name: string;
type: 'string' | 'number' | 'boolean' | 'date' | 'array' | 'object';
required: boolean;
validation?: string;
description?: string;
}>;
};
transformation: {
mapping: Record<string, string>;
computedFields: Array<{
name: string;
expression: string;
type: string;
}>;
};
createdAt: Date;
updatedAt: Date;
}
export class DataMigrationService {
private activeOperations: Map<string, MigrationProgress> = new Map();
private exportTemplates: Map<string, DataTemplate> = new Map();
private operationHistory: MigrationProgress[] = [];
constructor(
private dataDirectory: string = './data/migrations',
private tempDirectory: string = './temp/migrations'
) {
this.initializeDirectories();
this.initializeTemplates();
}
/**
* Export data with comprehensive options
*/
async exportData(
dataType: 'contexts' | 'sessions' | 'templates' | 'all',
data: unknown[],
options: ExportOptions,
userId: string = 'system'
): Promise<ExportResult> {
const exportId = uuidv4();
const startTime = Date.now();
const progress: MigrationProgress = {
operationId: exportId,
type: 'export',
status: 'running',
progress: 0,
currentStep: 'Initializing export',
totalSteps: 5,
currentRecord: 0,
totalRecords: data.length,
startTime: new Date(),
errors: [],
};
this.activeOperations.set(exportId, progress);
try {
logger.info('Starting data export', {
exportId,
dataType,
format: options.format,
recordCount: data.length,
userId,
});
// Step 1: Filter data
progress.currentStep = 'Filtering data';
progress.progress = 20;
const filteredData = await this.filterData(data, options.filters);
progress.totalRecords = filteredData.length;
// Step 2: Transform data
progress.currentStep = 'Transforming data';
progress.progress = 40;
const transformedData = await this.transformDataForExport(filteredData, options);
// Step 3: Generate export file
progress.currentStep = 'Generating export file';
progress.progress = 60;
const fileName = this.generateFileName(dataType, options.format, exportId);
const filePath = path.join(this.dataDirectory, 'exports', fileName);
await this.writeDataToFile(transformedData, filePath, options);
// Step 4: Apply compression and encryption
progress.currentStep = 'Processing file';
progress.progress = 80;
const processedFilePath = await this.processExportFile(filePath, options);
// Step 5: Finalize export
progress.currentStep = 'Finalizing export';
progress.progress = 100;
const fileStats = await fs.stat(processedFilePath);
const checksum = await this.calculateChecksum(processedFilePath);
const result: ExportResult = {
success: true,
exportId,
filePath: processedFilePath,
format: options.format,
recordCount: filteredData.length,
fileSize: fileStats.size,
duration: Date.now() - startTime,
checksumMd5: checksum,
metadata: {
exportedAt: new Date(),
exportedBy: userId,
options,
version: '1.0.0',
},
};
progress.status = 'completed';
this.operationHistory.push({ ...progress });
this.activeOperations.delete(exportId);
logger.info('Data export completed successfully', {
exportId,
recordCount: result.recordCount,
fileSize: result.fileSize,
duration: result.duration,
});
return result;
} catch (error) {
progress.status = 'failed';
progress.errors.push(error instanceof Error ? error.message : String(error));
logger.error('Data export failed', {
exportId,
error: error instanceof Error ? error.message : error,
});
const result: ExportResult = {
success: false,
exportId,
filePath: '',
format: options.format,
recordCount: 0,
fileSize: 0,
duration: Date.now() - startTime,
checksumMd5: '',
error: error instanceof Error ? error.message : String(error),
metadata: {
exportedAt: new Date(),
exportedBy: userId,
options,
version: '1.0.0',
},
};
this.operationHistory.push({ ...progress });
this.activeOperations.delete(exportId);
return result;
}
}
/**
* Import data with validation and transformation
*/
async importData(
filePath: string,
dataType: 'contexts' | 'sessions' | 'templates' | 'auto-detect',
options: ImportOptions,
userId: string = 'system'
): Promise<ImportResult> {
const importId = uuidv4();
const startTime = Date.now();
const progress: MigrationProgress = {
operationId: importId,
type: 'import',
status: 'running',
progress: 0,
currentStep: 'Initializing import',
totalSteps: 6,
currentRecord: 0,
totalRecords: 0,
startTime: new Date(),
errors: [],
};
this.activeOperations.set(importId, progress);
try {
logger.info('Starting data import', {
importId,
filePath,
dataType,
format: options.format,
userId,
});
// Step 1: Validate file and detect format
progress.currentStep = 'Validating file';
progress.progress = 10;
await this.validateImportFile(filePath, options);
// Step 2: Parse data
progress.currentStep = 'Parsing data';
progress.progress = 20;
const rawData = await this.parseImportFile(filePath, options);
progress.totalRecords = rawData.length;
// Step 3: Validate schema
progress.currentStep = 'Validating schema';
progress.progress = 40;
const validationResults = await this.validateImportData(rawData, dataType, options);
// Step 4: Transform data
progress.currentStep = 'Transforming data';
progress.progress = 60;
const transformedData = await this.transformDataForImport(rawData, options);
// Step 5: Process import
progress.currentStep = 'Processing import';
progress.progress = 80;
const importResults = await this.processImportData(transformedData, dataType, options);
// Step 6: Finalize import
progress.currentStep = 'Finalizing import';
progress.progress = 100;
const result: ImportResult = {
success: importResults.successfulRecords > 0,
importId,
format: options.format,
processedRecords: importResults.processedRecords,
successfulRecords: importResults.successfulRecords,
failedRecords: importResults.failedRecords,
skippedRecords: importResults.skippedRecords,
duration: Date.now() - startTime,
errors: importResults.errors,
validationErrors: validationResults.errors,
duplicatesFound: importResults.duplicatesFound,
metadata: {
importedAt: new Date(),
importedBy: userId,
sourceFile: filePath,
options,
},
};
progress.status = 'completed';
this.operationHistory.push({ ...progress });
this.activeOperations.delete(importId);
logger.info('Data import completed', {
importId,
successfulRecords: result.successfulRecords,
failedRecords: result.failedRecords,
duration: result.duration,
});
return result;
} catch (error) {
progress.status = 'failed';
progress.errors.push(error instanceof Error ? error.message : String(error));
logger.error('Data import failed', {
importId,
error: error instanceof Error ? error.message : error,
});
const result: ImportResult = {
success: false,
importId,
format: options.format,
processedRecords: 0,
successfulRecords: 0,
failedRecords: 0,
skippedRecords: 0,
duration: Date.now() - startTime,
errors: [{ record: 0, error: error instanceof Error ? error.message : String(error) }],
validationErrors: [],
duplicatesFound: 0,
metadata: {
importedAt: new Date(),
importedBy: userId,
sourceFile: filePath,
options,
},
};
this.operationHistory.push({ ...progress });
this.activeOperations.delete(importId);
return result;
}
}
/**
* Get progress of active operations
*/
getOperationProgress(operationId: string): MigrationProgress | undefined {
return this.activeOperations.get(operationId);
}
/**
* Get all active operations
*/
getActiveOperations(): MigrationProgress[] {
return Array.from(this.activeOperations.values());
}
/**
* Get operation history
*/
getOperationHistory(limit: number = 50): MigrationProgress[] {
return this.operationHistory.slice(-limit);
}
/**
* Cancel an active operation
*/
cancelOperation(operationId: string): boolean {
const operation = this.activeOperations.get(operationId);
if (operation && operation.status === 'running') {
operation.status = 'failed';
operation.errors.push('Operation cancelled by user');
this.operationHistory.push({ ...operation });
this.activeOperations.delete(operationId);
return true;
}
return false;
}
/**
* Create a data template for reusable import/export configurations
*/
async createDataTemplate(template: Omit<DataTemplate, 'id' | 'createdAt' | 'updatedAt'>): Promise<DataTemplate> {
const dataTemplate: DataTemplate = {
id: uuidv4(),
...template,
createdAt: new Date(),
updatedAt: new Date(),
};
this.exportTemplates.set(dataTemplate.id, dataTemplate);
// Save template to file
const templatePath = path.join(this.dataDirectory, 'templates', `${dataTemplate.id}.json`);
await fs.writeFile(templatePath, JSON.stringify(dataTemplate, null, 2));
logger.info('Data template created', {
templateId: dataTemplate.id,
name: dataTemplate.name,
type: dataTemplate.schema.type,
});
return dataTemplate;
}
/**
* Get available data templates
*/
getDataTemplates(): DataTemplate[] {
return Array.from(this.exportTemplates.values());
}
/**
* Private helper methods
*/
private async initializeDirectories(): Promise<void> {
const directories = [
this.dataDirectory,
this.tempDirectory,
path.join(this.dataDirectory, 'exports'),
path.join(this.dataDirectory, 'imports'),
path.join(this.dataDirectory, 'templates'),
];
for (const dir of directories) {
try {
await fs.mkdir(dir, { recursive: true });
} catch (error) {
logger.error('Failed to create directory', { directory: dir, error });
}
}
}
private initializeTemplates(): void {
// Initialize default templates
const defaultTemplates: Omit<DataTemplate, 'id' | 'createdAt' | 'updatedAt'>[] = [
{
name: 'Standard Context Export',
description: 'Standard format for exporting contexts with all metadata',
version: '1.0.0',
schema: {
type: 'context',
fields: [
{ name: 'id', type: 'string', required: true, description: 'Unique context identifier' },
{ name: 'title', type: 'string', required: true, description: 'Context title' },
{ name: 'content', type: 'string', required: true, description: 'Context content' },
{ name: 'type', type: 'string', required: true, description: 'Context type' },
{ name: 'tags', type: 'array', required: false, description: 'Context tags' },
{ name: 'createdAt', type: 'date', required: true, description: 'Creation timestamp' },
{ name: 'updatedAt', type: 'date', required: true, description: 'Last update timestamp' },
],
},
transformation: {
mapping: {
'id': 'id',
'title': 'title',
'content': 'content',
'type': 'type',
'tags': 'tags',
'createdAt': 'createdAt',
'updatedAt': 'updatedAt',
},
computedFields: [],
},
},
];
defaultTemplates.forEach(template => {
const dataTemplate: DataTemplate = {
id: uuidv4(),
...template,
createdAt: new Date(),
updatedAt: new Date(),
};
this.exportTemplates.set(dataTemplate.id, dataTemplate);
});
}
private async filterData(data: unknown[], filters?: ExportOptions['filters']): Promise<unknown[]> {
if (!filters) return data;
return data.filter(item => {
const context = item as Context;
// Date range filter
if (filters.dateRange) {
const itemDate = new Date(context.createdAt);
if (itemDate < filters.dateRange.start || itemDate > filters.dateRange.end) {
return false;
}
}
// Type filter
if (filters.types && !filters.types.includes(context.type)) {
return false;
}
// Tags filter
if (filters.tags && !filters.tags.some(tag => context.tags.includes(tag))) {
return false;
}
// Session ID filter
if (filters.sessionIds && !filters.sessionIds.includes(context.sessionId)) {
return false;
}
// Importance filter
if (filters.importance && context.metadata?.importance && !filters.importance.includes(context.metadata.importance)) {
return false;
}
return true;
});
}
private async transformDataForExport(data: unknown[], options: ExportOptions): Promise<unknown[]> {
return data.map(item => {
const context = { ...item } as any;
// Remove metadata if not included
if (!options.includeMetadata) {
delete context.metadata;
delete context.relationships;
}
// Handle binary data
if (!options.includeBinaryData) {
// Remove or transform binary fields
if (context.attachments) {
context.attachments = context.attachments.map((att: any) => ({
...att,
data: '[BINARY DATA EXCLUDED]',
}));
}
}
return context;
});
}
private generateFileName(dataType: string, format: string, exportId: string): string {
const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
return `${dataType}_export_${timestamp}_${exportId.slice(0, 8)}.${format}`;
}
private async writeDataToFile(data: unknown[], filePath: string, options: ExportOptions): Promise<void> {
await fs.mkdir(path.dirname(filePath), { recursive: true });
switch (options.format) {
case 'json':
await fs.writeFile(filePath, JSON.stringify(data, null, 2));
break;
case 'csv':
await this.writeCSV(data, filePath);
break;
case 'xml':
await this.writeXML(data, filePath);
break;
case 'yaml':
await this.writeYAML(data, filePath);
break;
case 'markdown':
await this.writeMarkdown(data, filePath);
break;
default:
throw new Error(`Unsupported export format: ${options.format}`);
}
}
private async writeCSV(data: unknown[], filePath: string): Promise<void> {
if (data.length === 0) {
await fs.writeFile(filePath, '');
return;
}
const headers = Object.keys(data[0] as object);
const csvLines = [headers.join(',')];
for (const item of data) {
const values = headers.map(header => {
const value = (item as any)[header];
if (typeof value === 'string') {
return `"${value.replace(/"/g, '""')}"`;
}
return value?.toString() || '';
});
csvLines.push(values.join(','));
}
await fs.writeFile(filePath, csvLines.join('\n'));
}
private async writeXML(data: unknown[], filePath: string): Promise<void> {
const xmlLines = ['<?xml version="1.0" encoding="UTF-8"?>', '<data>'];
for (const item of data) {
xmlLines.push(' <item>');
for (const [key, value] of Object.entries(item as object)) {
xmlLines.push(` <${key}>${this.escapeXML(String(value))}</${key}>`);
}
xmlLines.push(' </item>');
}
xmlLines.push('</data>');
await fs.writeFile(filePath, xmlLines.join('\n'));
}
private async writeYAML(data: unknown[], filePath: string): Promise<void> {
// Simple YAML implementation
const yamlLines = ['---'];
for (let i = 0; i < data.length; i++) {
yamlLines.push(`- # Item ${i + 1}`);
for (const [key, value] of Object.entries(data[i] as object)) {
yamlLines.push(` ${key}: ${JSON.stringify(value)}`);
}
}
await fs.writeFile(filePath, yamlLines.join('\n'));
}
private async writeMarkdown(data: unknown[], filePath: string): Promise<void> {
if (data.length === 0) {
await fs.writeFile(filePath, '# No Data\n\nNo data available for export.');
return;
}
const markdownLines = ['# Data Export', ''];
for (let i = 0; i < data.length; i++) {
const item = data[i] as any;
markdownLines.push(`## Item ${i + 1}`);
markdownLines.push('');
for (const [key, value] of Object.entries(item)) {
markdownLines.push(`**${key}:** ${value}`);
markdownLines.push('');
}
}
await fs.writeFile(filePath, markdownLines.join('\n'));
}
private async processExportFile(filePath: string, options: ExportOptions): Promise<string> {
let processedPath = filePath;
// Apply compression
if (options.compression && options.compression !== 'none') {
processedPath = await this.compressFile(processedPath, options.compression);
}
// Apply encryption
if (options.encryption?.enabled) {
processedPath = await this.encryptFile(processedPath, options.encryption);
}
return processedPath;
}
private async compressFile(filePath: string, compression: 'gzip' | 'brotli'): Promise<string> {
// Mock compression implementation
const compressedPath = `${filePath}.${compression}`;
await fs.copyFile(filePath, compressedPath);
await fs.unlink(filePath);
return compressedPath;
}
private async encryptFile(filePath: string, encryption: NonNullable<ExportOptions['encryption']>): Promise<string> {
// Mock encryption implementation
const encryptedPath = `${filePath}.encrypted`;
await fs.copyFile(filePath, encryptedPath);
await fs.unlink(filePath);
return encryptedPath;
}
private async calculateChecksum(filePath: string): Promise<string> {
// Mock checksum calculation
const stats = await fs.stat(filePath);
return `md5-${stats.size}-${stats.mtime.getTime()}`;
}
private async validateImportFile(filePath: string, options: ImportOptions): Promise<void> {
try {
await fs.access(filePath);
} catch {
throw new Error(`Import file not found: ${filePath}`);
}
const stats = await fs.stat(filePath);
if (stats.size === 0) {
throw new Error('Import file is empty');
}
if (stats.size > 100 * 1024 * 1024) { // 100MB limit
throw new Error('Import file is too large (max 100MB)');
}
}
private async parseImportFile(filePath: string, options: ImportOptions): Promise<unknown[]> {
const content = await fs.readFile(filePath, 'utf-8');
switch (options.format) {
case 'json':
return JSON.parse(content);
case 'csv':
return this.parseCSV(content);
case 'xml':
return this.parseXML(content);
case 'yaml':
return this.parseYAML(content);
case 'markdown':
return this.parseMarkdown(content);
default:
throw new Error(`Unsupported import format: ${options.format}`);
}
}
private parseCSV(content: string): unknown[] {
const lines = content.split('\n').filter(line => line.trim());
if (lines.length === 0) return [];
const headers = lines[0].split(',').map(h => h.trim().replace(/^"|"$/g, ''));
const data = [];
for (let i = 1; i < lines.length; i++) {
const values = lines[i].split(',').map(v => v.trim().replace(/^"|"$/g, ''));
const item: any = {};
headers.forEach((header, index) => {
item[header] = values[index] || '';
});
data.push(item);
}
return data;
}
private parseXML(content: string): unknown[] {
// Simple XML parsing - in production, use a proper XML parser
const items: unknown[] = [];
const itemMatches = content.match(/<item>(.*?)<\/item>/gs);
if (itemMatches) {
for (const itemMatch of itemMatches) {
const item: any = {};
const fieldMatches = itemMatch.match(/<(\w+)>(.*?)<\/\1>/g);
if (fieldMatches) {
for (const fieldMatch of fieldMatches) {
const match = fieldMatch.match(/<(\w+)>(.*?)<\/\1>/);
if (match) {
item[match[1]] = match[2];
}
}
}
items.push(item);
}
}
return items;
}
private parseYAML(content: string): unknown[] {
// Simple YAML parsing - in production, use a proper YAML parser
const items: unknown[] = [];
// Mock implementation
try {
return JSON.parse(content.replace(/---\n/, '[').replace(/\n$/, ']'));
} catch {
return [];
}
}
private parseMarkdown(content: string): unknown[] {
// Simple markdown parsing
const items: unknown[] = [];
const sections = content.split('## Item ').slice(1);
for (const section of sections) {
const item: any = {};
const lines = section.split('\n');
for (const line of lines) {
const match = line.match(/\*\*(.+?):\*\* (.+)/);
if (match) {
item[match[1]] = match[2];
}
}
if (Object.keys(item).length > 0) {
items.push(item);
}
}
return items;
}
private async validateImportData(
data: unknown[],
dataType: string,
options: ImportOptions
): Promise<{ isValid: boolean; errors: Array<{ field: string; value: unknown; message: string }> }> {
const errors: Array<{ field: string; value: unknown; message: string }> = [];
if (!options.validateSchema) {
return { isValid: true, errors: [] };
}
// Define validation schemas based on data type
const schemas = {
contexts: z.object({
title: z.string().min(1),
content: z.string().min(1),
type: z.string().min(1),
tags: z.array(z.string()).optional(),
}),
sessions: z.object({
sessionId: z.string().min(1),
userId: z.string().optional(),
lastActivity: z.string().datetime().optional(),
}),
templates: z.object({
name: z.string().min(1),
description: z.string().min(1),
version: z.string().min(1),
}),
};
const schema = schemas[dataType as keyof typeof schemas];
if (!schema) {
return { isValid: true, errors: [] };
}
for (let i = 0; i < data.length; i++) {
try {
schema.parse(data[i]);
} catch (error) {
if (error instanceof z.ZodError) {
for (const issue of error.issues) {
errors.push({
field: `Record ${i + 1}.${issue.path.join('.')}`,
value: issue.received,
message: issue.message,
});
}
}
}
}
return {
isValid: errors.length === 0,
errors,
};
}
private async transformDataForImport(data: unknown[], options: ImportOptions): Promise<unknown[]> {
if (!options.mapping) return data;
return data.map(item => {
const transformed: any = {};
const original = item as any;
// Apply field mappings
for (const [sourceField, targetField] of Object.entries(options.mapping.fieldMappings)) {
if (original[sourceField] !== undefined) {
transformed[targetField] = original[sourceField];
}
}
// Apply transformations
for (const transformation of options.mapping.transformations) {
if (transformed[transformation.field] !== undefined) {
const value = transformed[transformation.field];
switch (transformation.transformation) {
case 'uppercase':
transformed[transformation.field] = String(value).toUpperCase();
break;
case 'lowercase':
transformed[transformation.field] = String(value).toLowerCase();
break;
case 'trim':
transformed[transformation.field] = String(value).trim();
break;
case 'custom':
// Custom transformation would be implemented here
break;
}
}
}
return transformed;
});
}
private async processImportData(
data: unknown[],
dataType: string,
options: ImportOptions
): Promise<{
processedRecords: number;
successfulRecords: number;
failedRecords: number;
skippedRecords: number;
duplicatesFound: number;
errors: Array<{ record: number; error: string; data?: unknown }>;
}> {
const results = {
processedRecords: 0,
successfulRecords: 0,
failedRecords: 0,
skippedRecords: 0,
duplicatesFound: 0,
errors: [] as Array<{ record: number; error: string; data?: unknown }>,
};
if (options.dryRun) {
results.processedRecords = data.length;
results.successfulRecords = data.length;
return results;
}
// Process in batches
const batchSize = options.batchSize || 100;
for (let i = 0; i < data.length; i += batchSize) {
const batch = data.slice(i, i + batchSize);
for (let j = 0; j < batch.length; j++) {
const recordIndex = i + j;
const record = batch[j];
try {
results.processedRecords++;
// Check for duplicates if required
if (options.skipDuplicates) {
const isDuplicate = await this.checkForDuplicate(record, dataType);
if (isDuplicate) {
results.duplicatesFound++;
results.skippedRecords++;
continue;
}
}
// Process the record (this would integrate with actual storage)
await this.saveImportedRecord(record, dataType, options);
results.successfulRecords++;
} catch (error) {
results.failedRecords++;
const errorInfo = {
record: recordIndex + 1,
error: error instanceof Error ? error.message : String(error),
data: options.errorHandling === 'strict' ? record : undefined,
};
results.errors.push(errorInfo);
if (options.errorHandling === 'strict') {
throw error;
}
}
}
}
return results;
}
private async checkForDuplicate(record: unknown, dataType: string): Promise<boolean> {
// Mock duplicate check - in production, this would query the actual storage
return false;
}
private async saveImportedRecord(record: unknown, dataType: string, options: ImportOptions): Promise<void> {
// Mock save operation - in production, this would save to actual storage
// The implementation would depend on the storage system being used
await new Promise(resolve => setTimeout(resolve, 1)); // Simulate async operation
}
private escapeXML(str: string): string {
return str
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''');
}
}
