/*
 * Copyright 2021 The Android Open Source Project
 *
 * 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 <gtest/gtest.h>
#include <string.h>

#include <cstdint>
#include <map>
#include <memory>
#include <string>

#include "common/message_loop_thread.h"
#include "common/strings.h"
#include "stack/gatt/gatt_int.h"
#include "stack/include/gatt_api.h"

std::map<std::string, int> mock_function_count_map;

void LogMsg(uint32_t trace_set_mask, const char* fmt_str, ...) {}

bluetooth::common::MessageLoopThread* get_main_thread() { return nullptr; }

class StackGattTest : public ::testing::Test {};

namespace {

// Actual size of structure without compiler padding
size_t actual_sizeof_tGATT_REG() {
  return sizeof(bluetooth::Uuid) + sizeof(tGATT_CBACK) + sizeof(tGATT_IF) +
         sizeof(bool) + sizeof(uint8_t) + sizeof(bool);
}

void tGATT_DISC_RES_CB(uint16_t conn_id, tGATT_DISC_TYPE disc_type,
                       tGATT_DISC_RES* p_data) {}
void tGATT_DISC_CMPL_CB(uint16_t conn_id, tGATT_DISC_TYPE disc_type,
                        tGATT_STATUS status) {}
void tGATT_CMPL_CBACK(uint16_t conn_id, tGATTC_OPTYPE op, tGATT_STATUS status,
                      tGATT_CL_COMPLETE* p_data) {}
void tGATT_CONN_CBACK(tGATT_IF gatt_if, const RawAddress& bda, uint16_t conn_id,
                      bool connected, tGATT_DISCONN_REASON reason,
                      tBT_TRANSPORT transport) {}
void tGATT_REQ_CBACK(uint16_t conn_id, uint32_t trans_id, tGATTS_REQ_TYPE type,
                     tGATTS_DATA* p_data) {}
void tGATT_CONGESTION_CBACK(uint16_t conn_id, bool congested) {}
void tGATT_ENC_CMPL_CB(tGATT_IF gatt_if, const RawAddress& bda) {}
void tGATT_PHY_UPDATE_CB(tGATT_IF gatt_if, uint16_t conn_id, uint8_t tx_phy,
                         uint8_t rx_phy, tGATT_STATUS status) {}
void tGATT_CONN_UPDATE_CB(tGATT_IF gatt_if, uint16_t conn_id, uint16_t interval,
                          uint16_t latency, uint16_t timeout,
                          tGATT_STATUS status) {}

tGATT_CBACK gatt_callbacks = {
    .p_conn_cb = tGATT_CONN_CBACK,
    .p_cmpl_cb = tGATT_CMPL_CBACK,
    .p_disc_res_cb = tGATT_DISC_RES_CB,
    .p_disc_cmpl_cb = tGATT_DISC_CMPL_CB,
    .p_req_cb = tGATT_REQ_CBACK,
    .p_enc_cmpl_cb = tGATT_ENC_CMPL_CB,
    .p_congestion_cb = tGATT_CONGESTION_CBACK,
    .p_phy_update_cb = tGATT_PHY_UPDATE_CB,
    .p_conn_update_cb = tGATT_CONN_UPDATE_CB,
};

}  // namespace

TEST_F(StackGattTest, lifecycle_tGATT_REG) {
  {
    std::unique_ptr<tGATT_REG> reg0 = std::make_unique<tGATT_REG>();
    std::unique_ptr<tGATT_REG> reg1 = std::make_unique<tGATT_REG>();
    memset(reg0.get(), 0xff, sizeof(tGATT_REG));
    memset(reg1.get(), 0xff, sizeof(tGATT_REG));
    ASSERT_EQ(0, memcmp(reg0.get(), reg1.get(), sizeof(tGATT_REG)));

    memset(reg0.get(), 0x0, sizeof(tGATT_REG));
    memset(reg1.get(), 0x0, sizeof(tGATT_REG));
    ASSERT_EQ(0, memcmp(reg0.get(), reg1.get(), sizeof(tGATT_REG)));
  }

  {
    std::unique_ptr<tGATT_REG> reg0 = std::make_unique<tGATT_REG>();
    memset(reg0.get(), 0xff, sizeof(tGATT_REG));

    tGATT_REG reg1;
    memset(&reg1, 0xff, sizeof(tGATT_REG));

    // Clear the structures
    memset(reg0.get(), 0, sizeof(tGATT_REG));
    // Restore the complex structure after memset
    memset(&reg1.name, 0, sizeof(std::string));
    reg1 = {};
    ASSERT_EQ(0, memcmp(reg0.get(), &reg1, actual_sizeof_tGATT_REG()));
  }

  {
    tGATT_REG* reg0 = new tGATT_REG();
    tGATT_REG* reg1 = new tGATT_REG();
    memset(reg0, 0, sizeof(tGATT_REG));
    *reg1 = {};
    reg0->in_use = true;
    ASSERT_NE(0, memcmp(reg0, reg1, sizeof(tGATT_REG)));
    delete reg1;
    delete reg0;
  }
}

TEST_F(StackGattTest, gatt_init_free) {
  gatt_init();
  gatt_free();
}

TEST_F(StackGattTest, GATT_Register_Deregister) {
  gatt_init();

  // Gatt db profile always takes the first slot
  tGATT_IF apps[GATT_MAX_APPS - 1];

  for (int i = 0; i < GATT_MAX_APPS - 1; i++) {
    std::string name = bluetooth::common::StringFormat("name%02d", i);
    apps[i] = GATT_Register(bluetooth::Uuid::GetRandom(), name, &gatt_callbacks,
                            false);
  }

  for (int i = 0; i < GATT_MAX_APPS - 1; i++) {
    GATT_Deregister(apps[i]);
  }

  gatt_free();
}