/*
    * Copyright 2018 LINE Corporation
    *
    * LINE Corporation licenses this file to you 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:
    *
    *   https://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.
   */
  
  package com.linecorp.centraldogma.internal.jsonpatch;
  
  import java.io.IOException;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.core.JsonPointer;
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.SerializerProvider;
  import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
  
  public final class TestAbsenceOperation extends JsonPatchOperation {
      @JsonCreator
      public TestAbsenceOperation(@JsonProperty("path") final JsonPointer path) {
          super("testAbsence", path);
      }
  
      @Override
      JsonNode apply(JsonNode node) {
          final JsonNode found = node.at(path);
          if (!found.isMissingNode()) {
              throw new JsonPatchException("existent path: " + path);
          }
          return node;
      }
  
      @Override
      public void serialize(JsonGenerator gen, SerializerProvider serializers) throws IOException {
          gen.writeStartObject();
          gen.writeStringField("op", op);
          gen.writeStringField("path", path.toString());
          gen.writeEndObject();
      }
  
      @Override
      public void serializeWithType(JsonGenerator gen, SerializerProvider serializers, TypeSerializer typeSer)
              throws IOException {
          serialize(gen, serializers);
      }
  
      @Override
      public String toString() {
          return "op: " + op + "; path: \"" + path + '"';
      }
  }