import { ParentId, HandlerSetter } from 'interfaces'
import Operation from '../Operation';

export default function getParentIdHandlers(
  parentEntityType: string,
  propKey: string,
  propValue: ParentId
): {selfHandlerSetters: Array<HandlerSetter>, childHandlerSetters: Array<HandlerSetter>} {
  // ---------- selfHandler ----------
  const selfHandlerSetter: HandlerSetter = {
    handlerHolder: 'SELF',
    onAdd: [{
      updatingParentType: null,
      operationModifier: (selfOperation: Operation) => {
        selfOperation.modify({
          [propKey]: selfOperation.after[propKey] || null
        });
      }
    }],
    onUpdate: [],
    onDelete: []
  };

  return { selfHandlerSetters: [selfHandlerSetter], childHandlerSetters: [] };
}