// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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 "olap/rowset/rowset_meta.h"

#include <fstream>
#include <filesystem>
#include <sstream>
#include <string>

#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "json2pb/json_to_pb.h"
#include "olap/olap_meta.h"
#include "olap/rowset/alpha_rowset_meta.h"

#ifndef BE_TEST
#define BE_TEST
#endif

using ::testing::_;
using ::testing::Return;
using ::testing::SetArgPointee;
using std::string;

namespace doris {

const std::string rowset_meta_path = "./be/test/olap/test_data/rowset.json";

class RowsetMetaTest : public testing::Test {
public:
    virtual void SetUp() {
        std::string meta_path = "./meta";
        ASSERT_TRUE(std::filesystem::create_directory(meta_path));
        _meta = new (std::nothrow) OlapMeta(meta_path);
        ASSERT_NE(nullptr, _meta);
        OLAPStatus st = _meta->init();
        ASSERT_TRUE(st == OLAP_SUCCESS);
        ASSERT_TRUE(std::filesystem::exists("./meta"));

        std::ifstream infile(rowset_meta_path);
        char buffer[1024];
        while (!infile.eof()) {
            infile.getline(buffer, 1024);
            _json_rowset_meta = _json_rowset_meta + buffer + "\n";
        }
        _json_rowset_meta = _json_rowset_meta.substr(0, _json_rowset_meta.size() - 1);
        _json_rowset_meta = _json_rowset_meta.substr(0, _json_rowset_meta.size() - 1);
    }

    virtual void TearDown() {
        delete _meta;
        ASSERT_TRUE(std::filesystem::remove_all("./meta"));
    }

private:
    OlapMeta* _meta;
    std::string _json_rowset_meta;
};

void do_check(RowsetMeta rowset_meta) {
    RowsetId rowset_id;
    rowset_id.init(540081);
    ASSERT_EQ(rowset_id, rowset_meta.rowset_id());
    ASSERT_EQ(15673, rowset_meta.tablet_id());
    ASSERT_EQ(4042, rowset_meta.txn_id());
    ASSERT_EQ(567997577, rowset_meta.tablet_schema_hash());
    ASSERT_EQ(ALPHA_ROWSET, rowset_meta.rowset_type());
    ASSERT_EQ(VISIBLE, rowset_meta.rowset_state());
    ASSERT_EQ(2, rowset_meta.start_version());
    ASSERT_EQ(2, rowset_meta.end_version());
    ASSERT_EQ(3929, rowset_meta.num_rows());
    ASSERT_EQ(84699, rowset_meta.total_disk_size());
    ASSERT_EQ(84464, rowset_meta.data_disk_size());
    ASSERT_EQ(235, rowset_meta.index_disk_size());
    ASSERT_EQ(false, rowset_meta.empty());
    ASSERT_EQ(1553765670, rowset_meta.creation_time());
}

TEST_F(RowsetMetaTest, TestInit) {
    RowsetMeta rowset_meta;
    ASSERT_TRUE(rowset_meta.init_from_json(_json_rowset_meta));
    do_check(rowset_meta);
    RowsetMetaPB rowset_meta_pb;
    rowset_meta.to_rowset_pb(&rowset_meta_pb);
    RowsetMeta rowset_meta_2;
    rowset_meta_2.init_from_pb(rowset_meta_pb);
    do_check(rowset_meta_2);
    std::string value = "";
    rowset_meta_pb.SerializeToString(&value);
    RowsetMeta rowset_meta_3;
    rowset_meta_3.init(value);
    do_check(rowset_meta_3);
}

TEST_F(RowsetMetaTest, TestInitWithInvalidData) {
    RowsetMeta rowset_meta;
    ASSERT_FALSE(rowset_meta.init_from_json("invalid json meta data"));
    ASSERT_FALSE(rowset_meta.init("invalid pb meta data"));
}

void do_check_for_alpha(AlphaRowsetMeta alpha_rowset_meta) {
    RowsetId rowset_id;
    rowset_id.init(540081);
    ASSERT_EQ(rowset_id, alpha_rowset_meta.rowset_id());
    ASSERT_EQ(15673, alpha_rowset_meta.tablet_id());
    ASSERT_EQ(4042, alpha_rowset_meta.txn_id());
    ASSERT_EQ(567997577, alpha_rowset_meta.tablet_schema_hash());
    ASSERT_EQ(ALPHA_ROWSET, alpha_rowset_meta.rowset_type());
    ASSERT_EQ(VISIBLE, alpha_rowset_meta.rowset_state());
    ASSERT_EQ(2, alpha_rowset_meta.start_version());
    ASSERT_EQ(2, alpha_rowset_meta.end_version());
    ASSERT_EQ(3929, alpha_rowset_meta.num_rows());
    ASSERT_EQ(84699, alpha_rowset_meta.total_disk_size());
    ASSERT_EQ(84464, alpha_rowset_meta.data_disk_size());
    ASSERT_EQ(235, alpha_rowset_meta.index_disk_size());
    ASSERT_EQ(false, alpha_rowset_meta.empty());
    ASSERT_EQ(1553765670, alpha_rowset_meta.creation_time());
    std::vector<SegmentGroupPB> segment_groups;
    alpha_rowset_meta.get_segment_groups(&segment_groups);
    ASSERT_EQ(2, segment_groups.size());
}

TEST_F(RowsetMetaTest, TestAlphaRowsetMeta) {
    AlphaRowsetMeta rowset_meta;
    rowset_meta.init_from_json(_json_rowset_meta);
    do_check_for_alpha(rowset_meta);
    RowsetMetaPB rowset_meta_pb;
    rowset_meta.to_rowset_pb(&rowset_meta_pb);
    AlphaRowsetMeta rowset_meta_2;
    rowset_meta_2.init_from_pb(rowset_meta_pb);
    do_check_for_alpha(rowset_meta_2);
    std::string value = "";
    rowset_meta_pb.SerializeToString(&value);
    AlphaRowsetMeta rowset_meta_3;
    rowset_meta_3.init(value);
    do_check_for_alpha(rowset_meta_3);
}

TEST_F(RowsetMetaTest, TestAlphaRowsetMetaAdd) {
    AlphaRowsetMeta rowset_meta;
    rowset_meta.init_from_json(_json_rowset_meta);
    do_check_for_alpha(rowset_meta);
    SegmentGroupPB new_segment_group;
    new_segment_group.set_segment_group_id(88888);
    new_segment_group.set_num_segments(3);
    new_segment_group.set_empty(true);
    new_segment_group.set_index_size(100);
    new_segment_group.set_data_size(1000);
    new_segment_group.set_num_rows(1000);
    rowset_meta.add_segment_group(new_segment_group);
    std::vector<SegmentGroupPB> segment_groups;
    rowset_meta.get_segment_groups(&segment_groups);
    ASSERT_EQ(3, segment_groups.size());
    std::string meta_pb_string = "";
    ASSERT_TRUE(rowset_meta.serialize(&meta_pb_string));
    AlphaRowsetMeta rowset_meta_2;
    ASSERT_TRUE(rowset_meta_2.init(meta_pb_string));
    segment_groups.clear();
    rowset_meta_2.get_segment_groups(&segment_groups);
    ASSERT_EQ(3, segment_groups.size());
}

TEST_F(RowsetMetaTest, TestAlphaRowsetMetaClear) {
    AlphaRowsetMeta rowset_meta;
    rowset_meta.init_from_json(_json_rowset_meta);
    do_check_for_alpha(rowset_meta);
    rowset_meta.clear_segment_group();
    std::vector<SegmentGroupPB> segment_groups;
    rowset_meta.get_segment_groups(&segment_groups);
    ASSERT_EQ(0, segment_groups.size());
    std::string meta_pb_string = "";
    ASSERT_TRUE(rowset_meta.serialize(&meta_pb_string));
    AlphaRowsetMeta rowset_meta_2;
    ASSERT_TRUE(rowset_meta_2.init(meta_pb_string));
    segment_groups.clear();
    rowset_meta_2.get_segment_groups(&segment_groups);
    ASSERT_EQ(0, segment_groups.size());
}

} // namespace doris

int main(int argc, char** argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}