// Copyright 2019 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.analysis.platform;

import static com.google.common.truth.Truth.assertThat;

import build.bazel.remote.execution.v2.Platform;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.Spawn;
import com.google.devtools.build.lib.exec.util.SpawnBuilder;
import com.google.devtools.build.lib.remote.options.RemoteOptions;
import com.google.devtools.common.options.Options;
import java.util.AbstractMap;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for {@link PlatformUtils } */
@RunWith(JUnit4.class)
public final class PlatformUtilsTest {
  private static String platformOptionsString() {
    return String.join(
        "\n",
        "properties: {",
        " name: \"b\"",
        " value: \"2\"",
        "}",
        "properties: {",
        " name: \"a\"",
        " value: \"1\"",
        "}");
  }

  private static RemoteOptions remoteOptions() {
    RemoteOptions remoteOptions = Options.getDefaults(RemoteOptions.class);
    remoteOptions.remoteDefaultExecProperties =
        ImmutableList.of(
            new AbstractMap.SimpleEntry<>("b", "2"), new AbstractMap.SimpleEntry<>("a", "1"));
    return remoteOptions;
  }

  @Test
  public void testParsePlatformLegacyOptions() throws Exception {
    Platform expected =
        Platform.newBuilder()
            .addProperties(Platform.Property.newBuilder().setName("a").setValue("1"))
            .addProperties(Platform.Property.newBuilder().setName("b").setValue("2"))
            .build();
    PlatformInfo platform =
        PlatformInfo.builder().setRemoteExecutionProperties(platformOptionsString()).build();
    Spawn s = new SpawnBuilder("dummy").withPlatform(platform).build();
    assertThat(PlatformUtils.getPlatformProto(s, null)).isEqualTo(expected);
  }

  @Test
  public void testParsePlatformSortsProperties() throws Exception {
    Platform expected =
        Platform.newBuilder()
            .addProperties(Platform.Property.newBuilder().setName("a").setValue("1"))
            .addProperties(Platform.Property.newBuilder().setName("b").setValue("2"))
            .build();
    Spawn s = new SpawnBuilder("dummy").build();
    assertThat(PlatformUtils.getPlatformProto(s, remoteOptions())).isEqualTo(expected);
  }

  @Test
  public void testParsePlatformHandlesNull() throws Exception {
    Spawn s = new SpawnBuilder("dummy").build();
    assertThat(PlatformUtils.getPlatformProto(s, null)).isEqualTo(null);
  }

  @Test
  public void testParsePlatformSortsProperties_execProperties() throws Exception {
    // execProperties are chosen even if there are remoteOptions
    ImmutableMap<String, String> map = ImmutableMap.of("aa", "99", "zz", "66", "dd", "11");
    Spawn s = new SpawnBuilder("dummy").withExecProperties(map).build();

    Platform expected =
        Platform.newBuilder()
            .addProperties(Platform.Property.newBuilder().setName("aa").setValue("99"))
            .addProperties(Platform.Property.newBuilder().setName("dd").setValue("11"))
            .addProperties(Platform.Property.newBuilder().setName("zz").setValue("66"))
            .build();
    // execProperties are sorted by key
    assertThat(PlatformUtils.getPlatformProto(s, null)).isEqualTo(expected);
  }

  @Test
  public void getPlatformProto_mergeTargetExecPropertiesWithPlatform() throws Exception {
    Spawn spawn = new SpawnBuilder("dummy").withExecProperties(ImmutableMap.of("c", "3")).build();
    Platform expected =
        Platform.newBuilder()
            .addProperties(Platform.Property.newBuilder().setName("a").setValue("1"))
            .addProperties(Platform.Property.newBuilder().setName("b").setValue("2"))
            .addProperties(Platform.Property.newBuilder().setName("c").setValue("3"))
            .build();
    assertThat(PlatformUtils.getPlatformProto(spawn, remoteOptions())).isEqualTo(expected);
  }

  @Test
  public void getPlatformProto_targetExecPropertiesConflictWithPlatform_override()
      throws Exception {
    Spawn spawn = new SpawnBuilder("dummy").withExecProperties(ImmutableMap.of("b", "3")).build();
    Platform expected =
        Platform.newBuilder()
            .addProperties(Platform.Property.newBuilder().setName("a").setValue("1"))
            .addProperties(Platform.Property.newBuilder().setName("b").setValue("3"))
            .build();
    assertThat(PlatformUtils.getPlatformProto(spawn, remoteOptions())).isEqualTo(expected);
  }
}