#include <stdio.h>
#include <stdlib.h>

#include "FSM_protected.h"
#include "childFSM.h"
#include "childFSM_private.h"

/* 
    重载函数，有些是纯虚的必须重新实现，有些可以不重新实现直接用父类的
*/
Event ceventArr[20] = {
    Idle_Event,
    Idle_Event,
    Idle2D,
    Idle_Event,
    Idle_Event,
    D2E,
    E2D,
    D2E,
    Idle_Event,
    Idle_Event,
    Idle_Event,
    Idle_Event,
};

static Event selectEvent(ChildFSMData *data){   // 必须重新实现
    return ceventArr[data->arrindex];
}

static void step(ChildFSM* pFSM){
    printFSM(pFSM);
    _stepFSM(BASE_FSM(pFSM));
}

static void initData(ChildFSM *pFSM){   // 必须重新实现
    ChildFSMData *data = (ChildFSMData *)malloc(sizeof(ChildFSMData));
    data->arrindex = 0;

    pFSM->base.privateVars.preloader.in = malloc(sizeof(ChildFSMData));
    pFSM->base.privateVars.preloader.preloadSize = sizeof(ChildFSMData);

    pFSM->base.data = data;
}

static void initDataLoader(ChildFSM *pFSM){   // 必须重新实现
    pFSM->base.privateVars.preloader.in = malloc(sizeof(ChildFSMData));
    pFSM->base.privateVars.preloader.preloadSize = sizeof(ChildFSMData);
}

static void setupHandler(FSMHandler* fcns){ // 必须重新实现
    addStateActionFcn(during, E);
    addStateActionFcn(during, D);
    addStateActionFcn(enter, D);
    addStateActionFcn(exit, D);
    addStateActionFcn(enter, E);
    addStateActionFcn(exit, E);

    addTransitionHandler(Idle, Idle2D);
    addTransitionHandler(Idle, Idle2E);
    addTransitionHandler(D, D2E);
    addTransitionHandler(E, E2D);
}

/* 
    唯一外界调用的函数
 */

ChildFSM *createChildFSM(){
  
    ChildFSM *pFSM;
    pFSM = (ChildFSM *)newBaseFSM(Count_State, Count_Event, DEFAULT_STATE);

    pFSM->base.pureVtbl.step = step;
    pFSM->base.pureVtbl.selectNextState = selectEvent;
    pFSM->base.pureVtbl.initData = initData;
    pFSM->base.pureVtbl.setupHandler = setupHandler;
    pFSM->base.pureVtbl.initDataLoader = initDataLoader;

    constructFSM((FSM *)pFSM);

    return pFSM;
}