/*
 * Copyright (c) 2023 JIUYILIAN Co., Ltd.
 * 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 I_STATE_MACHINE_H
#define I_STATE_MACHINE_H
#include "StatusCode.h"
#include <memory>
class VStateMessage
{
public:
    VStateMessage() = default;
    virtual ~VStateMessage() = default;
};
class VStateMachineParam
{
public:
    VStateMachineParam() = default;
    virtual ~VStateMachineParam() = default;
    virtual int GetMessageName() const = 0;
    virtual const std::shared_ptr<VStateMessage> &GetMessageObj(void) const = 0;
};
class State
{
public:
    explicit State(const std::string &name) : mStateName(name) {}
    virtual ~State() = default;

public:
    virtual void GoInState() = 0;
    virtual void GoOutState() = 0;
    virtual bool ExecuteStateMsg(VStateMachineParam *msg) = 0;
    std::string GetStateName() { return mStateName; }

private:
    std::string mStateName;
};
class VStateMachine
{
public:
    VStateMachine() = default;
    virtual ~VStateMachine() = default;
    virtual bool InitialStateMachine() { return false; }
    virtual void StatePlus(State *state, State *upper) {}
    virtual void SetFirstState(State *firstState) {}
    virtual void StartStateMachine() {}
    virtual void SendMessage(int msgName) {}
    virtual void StopHandlerThread() {}
    virtual void SendMessage(int msgName, const std::shared_ptr<VStateMessage> &messageObj) {}
    virtual void MessageExecutedLater(int msgName, const std::shared_ptr<VStateMessage> &messageObj, int64_t delayTimeMs) {}
    virtual void SwitchState(State *targetState) {}
    virtual void StopTimer(int timerName) {}
    virtual void DelayMessage(VStateMachineParam *msg) {}
};
class IStateMachine
{
public:
    IStateMachine() = default;
    virtual ~IStateMachine() = default;
    static std::shared_ptr<IStateMachine> &GetInstance(std::shared_ptr<IStateMachine> *impl = nullptr);
    virtual const StatusCode CreateStateMachine(std::shared_ptr<VStateMachine> &stateMachine)
    {
        return CreateStatusCode(STATUS_CODE_VIRTUAL_FUNCTION);
    }
};
bool CreateStateMachine(void);
#endif