#!/usr/bin/env python3
"""Clean up orphaned Neo4j graph data"""
import asyncio
from neo4j import GraphDatabase
from config import settings

async def cleanup_neo4j():
    """Remove all nodes and relationships from Neo4j"""
    print("=" * 60)
    print("Neo4j Graph Store Cleanup")
    print("=" * 60)

    try:
        driver = GraphDatabase.driver(
            settings.neo4j_uri,
            auth=(settings.neo4j_user, settings.neo4j_password)
        )

        with driver.session() as session:
            # Count before cleanup
            result = session.run("MATCH (n) RETURN count(n) as count")
            nodes_before = result.single()['count']

            result = session.run("MATCH ()-[r]->() RETURN count(r) as count")
            rels_before = result.single()['count']

            print(f"\nBefore cleanup:")
            print(f"  • Nodes: {nodes_before}")
            print(f"  • Relationships: {rels_before}")

            # Delete all relationships first
            print("\n[1] Deleting all relationships...")
            result = session.run("MATCH ()-[r]->() DELETE r RETURN count(r) as deleted")
            rels_deleted = result.single()['deleted']
            print(f"✓ Deleted {rels_deleted} relationships")

            # Delete all nodes
            print("\n[2] Deleting all nodes...")
            result = session.run("MATCH (n) DELETE n RETURN count(n) as deleted")
            nodes_deleted = result.single()['deleted']
            print(f"✓ Deleted {nodes_deleted} nodes")

            # Verify cleanup
            result = session.run("MATCH (n) RETURN count(n) as count")
            nodes_after = result.single()['count']

            result = session.run("MATCH ()-[r]->() RETURN count(r) as count")
            rels_after = result.single()['count']

            print(f"\nAfter cleanup:")
            print(f"  • Nodes: {nodes_after}")
            print(f"  • Relationships: {rels_after}")

            if nodes_after == 0 and rels_after == 0:
                print("\n✅ Neo4j graph store successfully cleaned!")
            else:
                print(f"\n⚠️  Warning: {nodes_after} nodes and {rels_after} relationships remain")

        driver.close()

    except Exception as e:
        print(f"\n❌ Error during cleanup: {e}")
        import traceback
        traceback.print_exc()
        return 1

    print("\n" + "=" * 60)
    return 0

if __name__ == "__main__":
    exit_code = asyncio.run(cleanup_neo4j())
    exit(exit_code)