// Copyright (C) 2019 Google LLC
//
// 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.

#include <string>
#include <utility>

#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "icing/document-builder.h"
#include "icing/icing-search-engine.h"
#include "icing/portable/equals-proto.h"
#include "icing/proto/document.pb.h"
#include "icing/proto/initialize.pb.h"
#include "icing/proto/schema.pb.h"
#include "icing/proto/scoring.pb.h"
#include "icing/proto/search.pb.h"
#include "icing/proto/status.pb.h"
#include "icing/proto/term.pb.h"
#include "icing/schema-builder.h"
#include "icing/testing/common-matchers.h"
#include "icing/testing/tmp-directory.h"

namespace icing {
namespace lib {
namespace {

using ::icing::lib::portable_equals_proto::EqualsProto;
using ::testing::Eq;

std::string GetTestBaseDir() {
  return GetTestTempDir() + "/icing_with_icu_files";
}

IcingSearchEngineOptions GetDefaultIcingOptions() {
  IcingSearchEngineOptions icing_options;
  icing_options.set_base_dir(GetTestBaseDir());
  return icing_options;
}

DocumentProto CreateMessageDocument(std::string name_space, std::string uri) {
  return DocumentBuilder()
      .SetKey(std::move(name_space), std::move(uri))
      .SetSchema("Message")
      .AddStringProperty("body", "message body")
      .SetCreationTimestampMs(1)
      .Build();
}

ScoringSpecProto GetDefaultScoringSpec() {
  ScoringSpecProto scoring_spec;
  scoring_spec.set_rank_by(ScoringSpecProto::RankingStrategy::DOCUMENT_SCORE);
  return scoring_spec;
}

TEST(IcingSearchEngineWithIcuFileTest, ShouldInitialize) {
  IcingSearchEngine icing(GetDefaultIcingOptions());
  EXPECT_THAT(icing.Initialize().status().code(), Eq(StatusProto::OK));

  SchemaProto schema =
      SchemaBuilder()
          .AddType(SchemaTypeConfigBuilder().SetType("Message").AddProperty(
              PropertyConfigBuilder()
                  .SetName("body")
                  .SetDataTypeString(TERM_MATCH_PREFIX, TOKENIZER_PLAIN)
                  .SetCardinality(CARDINALITY_REQUIRED)))
          .Build();
  EXPECT_THAT(icing.SetSchema(schema).status().code(), Eq(StatusProto::OK));
}

TEST(IcingSearchEngineWithIcuFileTest, ShouldIndexAndSearch) {
  IcingSearchEngine icing(GetDefaultIcingOptions());
  ASSERT_THAT(icing.Initialize().status().code(), Eq(StatusProto::OK));

  SchemaProto schema =
      SchemaBuilder()
          .AddType(SchemaTypeConfigBuilder().SetType("Message").AddProperty(
              PropertyConfigBuilder()
                  .SetName("body")
                  .SetDataTypeString(TERM_MATCH_PREFIX, TOKENIZER_PLAIN)
                  .SetCardinality(CARDINALITY_REQUIRED)))
          .Build();
  ASSERT_THAT(icing.SetSchema(schema).status().code(), Eq(StatusProto::OK));

  DocumentProto document_one = CreateMessageDocument("namespace", "uri1");
  ASSERT_THAT(icing.Put(document_one).status().code(), Eq(StatusProto::OK));

  DocumentProto document_two = CreateMessageDocument("namespace", "uri2");
  ASSERT_THAT(icing.Put(document_two).status().code(), Eq(StatusProto::OK));

  SearchSpecProto search_spec;
  search_spec.set_term_match_type(TermMatchType::PREFIX);
  search_spec.set_query("message");

  ResultSpecProto result_spec;
  result_spec.set_num_per_page(1);

  SearchResultProto expected_search_result_proto;
  expected_search_result_proto.mutable_status()->set_code(StatusProto::OK);
  *expected_search_result_proto.mutable_results()->Add()->mutable_document() =
      document_two;

  SearchResultProto search_result_proto =
      icing.Search(search_spec, GetDefaultScoringSpec(), result_spec);
  EXPECT_THAT(search_result_proto.status().code(), Eq(StatusProto::OK));
  // The token is a random number so we don't verify it.
  expected_search_result_proto.set_next_page_token(
      search_result_proto.next_page_token());
  EXPECT_THAT(search_result_proto, EqualsSearchResultIgnoreStatsAndScores(
                                       expected_search_result_proto));
}

}  // namespace
}  // namespace lib
}  // namespace icing