// Copyright (C) 2019-2020 Zilliz. 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.

#pragma once

#include <gtest/gtest.h>

#include <chrono>
#include <memory>
#include <fiu-control.h>
#include <fiu-local.h>

#include "db/DB.h"
#include "db/meta/MySQLMetaImpl.h"
#include "db/meta/SqliteMetaImpl.h"
#include "scheduler/ResourceFactory.h"
#include "scheduler/SchedInst.h"

#define TIMING

#ifdef TIMING
#define INIT_TIMER auto start = std::chrono::high_resolution_clock::now();
#define START_TIMER start = std::chrono::high_resolution_clock::now();
#define STOP_TIMER(name)                                                                                            \
    LOG(DEBUG) << "RUNTIME of " << name << ": "                                                                     \
               << std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - \
                                                                        start)                                      \
                      .count()                                                                                      \
               << " ms ";
#else
#define INIT_TIMER
#define START_TIMER
#define STOP_TIMER(name)
#endif

#ifdef FIU_ENABLE
#define FIU_ENABLE_FIU(name) fiu_enable(name, 1, nullptr, 0)
#endif

static const char* CONFIG_PATH = "/tmp/milvus_test";
static const char* CONFIG_FILE = "/server_config.yaml";

class BaseTest : public ::testing::Test {
 protected:
    void
    InitLog();

    void
    SetUp() override;
    void
    TearDown() override;
    virtual milvus::engine::DBOptions
    GetOptions();

    std::shared_ptr<milvus::server::Context> dummy_context_;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DBTest : public BaseTest {
 protected:
    milvus::engine::DBPtr db_;

    void
    SetUp() override;
    void
    TearDown() override;

    void
    BuildDB(const milvus::engine::DBOptions& options);

    void
    FreeDB();
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DBTest2 : public DBTest {
 protected:
    milvus::engine::DBOptions
    GetOptions() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DBTestWAL : public DBTest {
 protected:
    milvus::engine::DBOptions
    GetOptions() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DBTestWALRecovery_Error : public DBTest {
 protected:
    milvus::engine::DBOptions
    GetOptions() override;

    void
    TearDown() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DBTestWALRecovery : public  DBTestWAL{
 protected:
    milvus::engine::DBOptions
    GetOptions() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class EngineTest : public DBTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class MetaTest : public BaseTest {
 protected:
    std::shared_ptr<milvus::engine::meta::SqliteMetaImpl> impl_;

    void
    SetUp() override;
    void
    TearDown() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class MySqlDBTest : public DBTest {
 protected:
    milvus::engine::DBOptions
    GetOptions() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class MySqlMetaTest : public BaseTest {
 protected:
    std::shared_ptr<milvus::engine::meta::MySQLMetaImpl> impl_;

    void
    SetUp() override;
    void
    TearDown() override;
    milvus::engine::DBOptions
    GetOptions() override;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class MemManagerTest : public MetaTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class MemManagerTest2 : public DBTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class DeleteTest : public DBTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class CompactTest : public DBTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class SearchByIdTest : public DBTest {};

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class GetVectorByIdTest : public DBTest {};
//
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class SnapshotTest : public DBTest {
 protected:
    void
    SetUp() override;
    void
    TearDown() override;
};