// Copyright 2015-2023 Swim.inc
//
// 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.

package swim.dynamic.api.lane;

import swim.api.lane.ValueLane;
import swim.dynamic.Bridge;
import swim.dynamic.HostMethod;
import swim.dynamic.HostObjectType;
import swim.dynamic.JavaHostObjectType;
import swim.dynamic.api.warp.HostWarpLane;
import swim.dynamic.observable.HostObservableValue;

public final class HostValueLane {

  private HostValueLane() {
    // static
  }

  public static final HostObjectType<ValueLane<Object>> TYPE;

  static {
    final JavaHostObjectType<ValueLane<Object>> type = new JavaHostObjectType<>(ValueLane.class);
    TYPE = type;
    type.inheritType(HostWarpLane.TYPE);
    type.inheritType(HostObservableValue.TYPE);
    type.addMember(new HostValueLaneIsResident());
    type.addMember(new HostValueLaneIsTransient());
    type.addMember(new HostValueLaneObserve());
    type.addMember(new HostValueLaneUnobserve());
  }

}

final class HostValueLaneIsResident implements HostMethod<ValueLane<Object>> {

  @Override
  public String key() {
    return "isResident";
  }

  @Override
  public Object invoke(Bridge bridge, ValueLane<Object> lane, Object... arguments) {
    final Object isResident = arguments.length == 0 ? null : arguments[0];
    if (isResident == null) {
      return lane.isResident();
    } else {
      return lane.isResident((boolean) isResident);
    }
  }

}

final class HostValueLaneIsTransient implements HostMethod<ValueLane<Object>> {

  @Override
  public String key() {
    return "isTransient";
  }

  @Override
  public Object invoke(Bridge bridge, ValueLane<Object> lane, Object... arguments) {
    final Object isTransient = arguments.length == 0 ? null : arguments[0];
    if (isTransient == null) {
      return lane.isTransient();
    } else {
      return lane.isTransient((boolean) isTransient);
    }
  }

}

final class HostValueLaneObserve implements HostMethod<ValueLane<Object>> {

  @Override
  public String key() {
    return "observe";
  }

  @Override
  public Object invoke(Bridge bridge, ValueLane<Object> lane, Object... arguments) {
    final Object observer = arguments[0];
    // TODO: bridge observer callback members.
    lane.observe(observer);
    return this;
  }

}

final class HostValueLaneUnobserve implements HostMethod<ValueLane<Object>> {

  @Override
  public String key() {
    return "unobserve";
  }

  @Override
  public Object invoke(Bridge bridge, ValueLane<Object> lane, Object... arguments) {
    final Object observer = arguments[0];
    // TODO: bridge observer callback members.
    lane.unobserve(observer);
    return this;
  }

}
