/*
 * Copyright (c) 2023 Fancy Code.
 * 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.
 */
#ifndef LINUX_API_MOCK_H
#define LINUX_API_MOCK_H
#include "GtestUsing.h"
#include <memory>
constexpr int INVALID_HANDLE = -1;
constexpr int MOCK_SELECT_TIME_OUT = 0;
class LinuxApiMock
{
public:
    LinuxApiMock() = default;
    virtual ~LinuxApiMock() = default;
    static std::shared_ptr<LinuxApiMock> &GetInstance(std::shared_ptr<LinuxApiMock> *impl = nullptr);
    virtual void Init();
    virtual void UnInit();
    virtual int fx_open(const char *pathname, int flags);
    virtual int fx_tcgetattr(int fd, struct termios *termios_p);
    virtual int fx_tcsetattr(int fd, int optional_actions, const struct termios *termios_p);
    virtual ssize_t fx_write(int fd, const void *buf, size_t count);
    virtual ssize_t fx_read(int fd, void *buf, size_t count);
    virtual int fx_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
    virtual int fx_fstat(int fd, struct stat *statbuf);
};
/**
 * A simulation interface class used for automated testing in Ubuntu systems, implementing the function of piling on
 * some Linux standard interfaces.
 */
class LinuxTest : public LinuxApiMock, public std::enable_shared_from_this<LinuxTest>
{
public:
    LinuxTest() = default;
    virtual ~LinuxTest() = default;
    MOCK_METHOD2(fx_open, int(const char *, int));
    MOCK_METHOD2(fx_tcgetattr, int(int, struct termios *));
    MOCK_METHOD3(fx_tcsetattr, int(int, int, const struct termios *));
    MOCK_METHOD3(fx_write, ssize_t(int, const void *, size_t));
    MOCK_METHOD3(fx_read, ssize_t(int, void *, size_t));
    MOCK_METHOD5(fx_select, int(int, fd_set *, fd_set *, fd_set *, struct timeval *));
    MOCK_METHOD2(fx_fstat, int(int, struct stat *));

public:
    /**
     * @brief Get the Handle For Mock object
     * Obtain a globally unique test handle throughout the entire testing cycle, and the handle generated through this
     * interface can avoid handle conflicts between different testing modules. Attention needs to be paid to whether it
     * conflicts with non test handles generated by the system.
     * @return int
     */
    virtual int GetHandleForMock(void);

public:
    static std::shared_ptr<LinuxTest> CreateLinuxTest(void);
};
#endif