// Copyright 2018 The Nomulus 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 google.registry.tools;

import static com.google.common.truth.Truth.assertThat;
import static google.registry.model.ofy.ObjectifyService.ofy;
import static google.registry.testing.DatastoreHelper.persistResource;
import static google.registry.testing.JUnitBackports.assertThrows;

import com.beust.jcommander.ParameterException;
import com.googlecode.objectify.Key;
import google.registry.model.domain.token.AllocationToken;
import google.registry.model.reporting.HistoryEntry;
import java.util.Collection;
import javax.annotation.Nullable;
import org.junit.Before;
import org.junit.Test;

/** Unit tests for {@link DeleteAllocationTokensCommand}. */
public class DeleteAllocationTokensCommandTest
    extends CommandTestCase<DeleteAllocationTokensCommand> {

  private AllocationToken preRed1;
  private AllocationToken preRed2;
  private AllocationToken preNot1;
  private AllocationToken preNot2;
  private AllocationToken othrRed;
  private AllocationToken othrNot;

  @Before
  public void init() {
    preRed1 = persistToken("prefix12345AA", null, true);
    preRed2 = persistToken("prefixgh8907a", null, true);
    preNot1 = persistToken("prefix2978204", null, false);
    preNot2 = persistToken("prefix8ZZZhs8", null, false);
    othrRed = persistToken("h97987sasdfhh", null, true);
    othrNot = persistToken("asdgfho7HASDS", null, false);
  }

  @Test
  public void test_deleteAllUnredeemedTokens_whenEmptyPrefixSpecified() throws Exception {
    runCommandForced("--prefix", "");
    assertThat(reloadTokens(preNot1, preNot2, othrNot)).isEmpty();
    assertThat(reloadTokens(preRed1, preRed2, othrRed)).containsExactly(preRed1, preRed2, othrRed);
    assertInStdout("Deleted tokens: asdgfho7HASDS, prefix2978204, prefix8ZZZhs8");
  }

  @Test
  public void test_deleteOnlyUnredeemedTokensWithPrefix() throws Exception {
    runCommandForced("--prefix", "prefix");
    assertThat(reloadTokens(preNot1, preNot2)).isEmpty();
    assertThat(reloadTokens(preRed1, preRed2, othrRed, othrNot))
        .containsExactly(preRed1, preRed2, othrRed, othrNot);
  }

  @Test
  public void test_deleteSingleAllocationToken() throws Exception {
    runCommandForced("--prefix", "asdgfho7HASDS");
    assertThat(reloadTokens(othrNot)).isEmpty();
    assertThat(reloadTokens(preRed1, preRed2, preNot1, preNot2, othrRed))
        .containsExactly(preRed1, preRed2, preNot1, preNot2, othrRed);
  }

  @Test
  public void test_deleteTokensWithNonExistentPrefix_doesNothing() throws Exception {
    runCommandForced("--prefix", "nonexistent");
    assertThat(reloadTokens(preRed1, preRed2, preNot1, preNot2, othrRed, othrNot))
        .containsExactly(preRed1, preRed2, preNot1, preNot2, othrRed, othrNot);
  }

  @Test
  public void test_dryRun_deletesNothing() throws Exception {
    runCommandForced("--prefix", "", "--dry_run");
    assertThat(reloadTokens(preRed1, preRed2, preNot1, preNot2, othrRed, othrNot))
        .containsExactly(preRed1, preRed2, preNot1, preNot2, othrRed, othrNot);
    assertInStdout("Would delete tokens: asdgfho7HASDS, prefix2978204, prefix8ZZZhs8");
  }

  @Test
  public void test_defaultOptions_doesntDeletePerDomainTokens() throws Exception {
    AllocationToken preDom1 = persistToken("prefixasdfg897as", "foo.bar", false);
    AllocationToken preDom2 = persistToken("prefix98HAZXadbn", "foo.bar", true);
    runCommandForced("--prefix", "prefix");
    assertThat(reloadTokens(preNot1, preNot2)).isEmpty();
    assertThat(reloadTokens(preRed1, preRed2, preDom1, preDom2, othrRed, othrNot))
        .containsExactly(preRed1, preRed2, preDom1, preDom2, othrRed, othrNot);
  }

  @Test
  public void test_withDomains_doesDeletePerDomainTokens() throws Exception {
    AllocationToken preDom1 = persistToken("prefixasdfg897as", "foo.bar", false);
    AllocationToken preDom2 = persistToken("prefix98HAZXadbn", "foo.bar", true);
    runCommandForced("--prefix", "prefix", "--with_domains");
    assertThat(reloadTokens(preNot1, preNot2, preDom1)).isEmpty();
    assertThat(reloadTokens(preRed1, preRed2, preDom2, othrRed, othrNot))
        .containsExactly(preRed1, preRed2, preDom2, othrRed, othrNot);
  }

  @Test
  public void test_batching() throws Exception {
    for (int i = 0; i < 50; i++) {
      persistToken(String.format("batch%2d", i), null, i % 2 == 0);
    }
    assertThat(ofy().load().type(AllocationToken.class).count()).isEqualTo(56);
    runCommandForced("--prefix", "batch");
    assertThat(ofy().load().type(AllocationToken.class).count()).isEqualTo(56 - 25);
  }

  @Test
  public void test_prefixIsRequired() {
    ParameterException thrown = assertThrows(ParameterException.class, () -> runCommandForced());
    assertThat(thrown)
        .hasMessageThat()
        .isEqualTo("The following option is required: -p, --prefix ");
  }

  private static AllocationToken persistToken(
      String token, @Nullable String domainName, boolean redeemed) {
    AllocationToken.Builder builder =
        new AllocationToken.Builder().setToken(token).setDomainName(domainName);
    if (redeemed) {
      builder.setRedemptionHistoryEntry(Key.create(HistoryEntry.class, 1051L));
    }
    return persistResource(builder.build());
  }

  private static Collection<AllocationToken> reloadTokens(AllocationToken ... tokens) {
    return ofy().load().entities(tokens).values();
  }
}