Add Graph Data Export Functionality

[peter7775]

Description

Allow users to export graph data in various formats for external use and analysis.

Requirements

Supported Export Formats

• JSON - Complete graph data with nodes and relationships
• CSV - Separate files for nodes and relationships
• GraphML - Standard graph format for other visualization tools
• Cypher Script - Neo4j queries to recreate the graph

Export Options

• Full Graph - Export entire transformed graph
• Filtered Export - Export based on node types or properties
• Query Results - Export results of specific GraphQL queries

User Interface

• Add export button to visualization interface
• Format selection dropdown
• Progress indicator for large exports
• Download link generation

Acceptance Criteria

• Export button added to UI
• Support for JSON, CSV, GraphML, Cypher formats
• Filter options for selective export
• Progress indication for large datasets
• Proper error handling for export failures
• API endpoints for programmatic export

Technical Implementation

API Endpoints

GET /api/export/json
GET /api/export/csv
GET /api/export/graphml
GET /api/export/cypher

Query Parameters

• format - Export format
• nodeTypes - Filter by node types
• limit - Limit number of results

Files to Modify

• internal/application/services/ - Add export service
• internal/interfaces/web/ - Add export endpoints
• Frontend - Add export UI components

Estimated Effort

1-2 days