import { HopExpression } from '../Expression.js';
import { HopQuery, Query } from '../Query.js';
import { EdgeSpec } from '@aphro/schema-api';
import { Context, IModel } from '@aphro/context-runtime-ts';
import MemoryHopExpression from './MemoryHopExpression.js';

export default class MemoryHopQuery<TIn extends IModel, TOut> extends HopQuery<TIn, TOut> {
  static create<TIn extends IModel, TOut>(ctx: Context, sourceQuery: Query<TIn>, edge: EdgeSpec) {
    // source could be anything.
    // dest is memory.
    // standalone edge could be memory or sql...
    return new MemoryHopQuery<TIn, TOut>(
      ctx,
      sourceQuery,
      new MemoryHopExpression(ctx, edge, { what: 'model' }),
    );
  }
}

function createChainedHopExpression<TIn, TOut>(edge: EdgeSpec): HopExpression<TIn, TOut> {
  throw new Error('In memory hop not yet supported');
}