/* 
 *                                dbMango
 *
 * Copyright 2025 Deutsche Bank AG
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Rms.Risk.Mango.Language.Ast;

public class AstStageWhere : AstStage
{
    public AstStageWhere()
    {
    }

    public AstStageWhere(AstExpression expression)
    {
        Add(expression);
    }

    public AstExpression Expression => Children.OfType<AstExpression>().First();

    public override void Append(StringBuilder sb, int indent)
    {
        sb.AppendLine($"{Spaces(indent)}WHERE");
        sb.Append(Spaces(indent + 1));
        Expression.Append(sb, indent + 1);
        sb.AppendLine();
    }

    public override JsonNode? AsJson() => ApplyOptions(new JsonObject([ new("$match", Expression.AsJson())]));
}