// Copyright 2018 The Bazel Authors. All rights reserved.
//
// 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 com.google.devtools.build.lib.skylarkbuildapi.android;

import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.skylarkbuildapi.FileApi;
import com.google.devtools.build.lib.skylarkbuildapi.ProviderApi;
import com.google.devtools.build.lib.skylarkbuildapi.StructApi;
import com.google.devtools.build.lib.skylarkinterface.Param;
import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
import com.google.devtools.build.lib.skylarkinterface.SkylarkConstructor;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import com.google.devtools.build.lib.syntax.EvalException;
import com.google.devtools.build.lib.syntax.SkylarkList;

/**
 * An interface for a provider that exposes the use of <a
 * href="https://developer.android.com/topic/libraries/data-binding/index.html">data binding</a>.
 */
@SkylarkModule(name = "UsesDataBindingInfo", doc = "", documented = false)
public interface UsesDataBindingProviderApi<T extends FileApi> extends StructApi {

  /** Name of this info object. */
  public static String NAME = "UsesDataBindingInfo";

  /**
   * Returns the metadata outputs from this rule's annotation processing that describe how it
   * applies data binding. See {@link DataBinding#getMetadataOutputs} for details.
   */
  @SkylarkCallable(name = "metadata_outputs", structField = true, doc = "", documented = false)
  ImmutableList<T> getMetadataOutputs();

  /** The provider implementing this can construct the UsesDataBindingInfo provider. */
  @SkylarkModule(name = "Provider", doc = "", documented = false)
  public interface Provider<F extends FileApi> extends ProviderApi {

    @SkylarkCallable(
        name = NAME,
        doc = "The <code>UsesDataBindingInfo</code> constructor.",
        parameters = {
          @Param(
              name = "metadata_outputs",
              doc = "A list of artifacts of the metadata outputs.",
              positional = true,
              named = false,
              type = SkylarkList.class,
              generic1 = FileApi.class),
        },
        selfCall = true)
    @SkylarkConstructor(objectType = UsesDataBindingProviderApi.class)
    UsesDataBindingProviderApi<F> createInfo(SkylarkList<F> metadataOutputs) throws EvalException;
  }
}