import os
import sys

# Add backend directory to path
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from sqlalchemy import text
from app.db.database import SessionLocal

def purge_project_accesses():
    db = SessionLocal()
    try:
        # 1. Delete all role_accesses linked to project.*
        res_role_acc = db.execute(text("DELETE FROM role_accesses WHERE access_id IN (SELECT id FROM accesses WHERE access_code LIKE 'project.%')"))
        print(f"Deleted {res_role_acc.rowcount} from role_accesses.")
        
        # 2. Nullify parent_id for any accesses that use project.* as parent (unlikely, but safe)
        try:
            res_parent = db.execute(text("UPDATE accesses SET parent_id = NULL WHERE parent_id IN (SELECT id FROM accesses WHERE access_code LIKE 'project.%')"))
            print(f"Nullified parent_id for {res_parent.rowcount} accesses.")
        except Exception:
            try:
                # Fallback if the column is named parent_access_id
                res_parent = db.execute(text("UPDATE accesses SET parent_access_id = NULL WHERE parent_access_id IN (SELECT id FROM accesses WHERE access_code LIKE 'project.%')"))
                print(f"Nullified parent_access_id for {res_parent.rowcount} accesses.")
            except Exception:
                pass
            
        # 3. Delete the rows themselves
        res_del = db.execute(text("DELETE FROM accesses WHERE access_code LIKE 'project.%'"))
        print(f"Deleted {res_del.rowcount} from accesses.")
        
        db.commit()
        print("Success! All 'project.*' rows have been completely purged from the database.")
        
    except Exception as e:
        db.rollback()
        import traceback
        traceback.print_exc()
        print(f"Failed to delete: {e}")
    finally:
        db.close()

if __name__ == "__main__":
    purge_project_accesses()