/******************************************************************************

                  版权所有 (C), 2018-2099, Radkil

 ******************************************************************************
  文 件 名   : button.c
  版 本 号   : 初稿
  作    者   : Radkil
  生成日期   : 2026年3月25日星期三
  最近修改   :
  功能描述   : 按键时间驱动处理
  
  修改历史   :
  1.日    期   : 2026年3月25日星期三
    作    者   : Radkil
    修改内容   : 创建文件

******************************************************************************/
#include "button.h"
#include "rd_thread.h"
#include "rd_time.h"

/*----------------------------------------------*
 * 外部变量说明                                 *
 *----------------------------------------------*/

/*----------------------------------------------*
 * 外部函数原型说明                             *
 *----------------------------------------------*/

/*----------------------------------------------*
 * 内部函数原型说明                             *
 *----------------------------------------------*/

/*----------------------------------------------*
 * 全局变量                                     *
 *----------------------------------------------*/

/*----------------------------------------------*
 * 模块级变量                                   *
 *----------------------------------------------*/
#define RD_BUTTON_ELIMINATION_TIME_DEFAULT  15   /**< 按键消抖默认时间 15ms */
#define RD_BUTTON_TWO_INTERVAL_TIME_DEFAULT 500  /**< 两次按键按下间隔超过500ms清零重复计数 */
#define RD_BUTTON_HOLD_CYCLE_TIME_DEFAULT   500  /**< 按键按下后持续调用回调函数的周期 */

static rd_slist_t g_sBtnListHead = RD_SLIST_OBJECT_INIT(g_sBtnListHead);
static rd_mutex_t g_fpBtnCtrl = RD_MUTEX_INITIALIZER;
/*----------------------------------------------*
 * 常量定义                                     *
 *----------------------------------------------*/

/*----------------------------------------------*
 * 宏定义                                       *
 *----------------------------------------------*/
rd_btn_t *rd_BtnCreate(int _iActiveLogic)
{
    rd_btn_t *pBtn = (rd_btn_t *)RD_MALLOC(sizeof(rd_btn_t));
    if (pBtn == NULL) return NULL;

    RD_MEMSET(pBtn, 0, sizeof(rd_btn_t));
    pBtn->m_iActive = 0;
    pBtn->m_iRepeatCnt = 0;
    pBtn->m_iEliminationTime = RD_BUTTON_ELIMINATION_TIME_DEFAULT;
    pBtn->m_tEvent = EVENT_NUM;
    pBtn->m_tState = STATE_NONE_PRESS;
    pBtn->m_iHoldTime = 0;
    pBtn->m_iPrevHoldTime = 0;
    pBtn->m_iHoldCycleTime = RD_BUTTON_HOLD_CYCLE_TIME_DEFAULT;
    pBtn->m_iActiveLogic = _iActiveLogic;
    pBtn->m_iTimeout = Rd_GetTime();
    rd_slist_init(&(pBtn->m_tSlist));

    return pBtn;
}

int rd_BtnDelete(rd_btn_t *_pBtn)
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    rd_slist_remove(&g_sBtnListHead, &(_pBtn->m_tSlist));
    _pBtn->m_tSlist.next = NULL;
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);
    RD_FREE(_pBtn);

    return RD_SUCCESS;
}

int rd_BtnStart(rd_btn_t *_pBtn)
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    if (_pBtn->m_iActive)
    {
        goto END;
        return RD_INVALUE;
    }
    _pBtn->m_iRepeatCnt = 0;
    _pBtn->m_tEvent = EVENT_NUM;
    _pBtn->m_tState = STATE_NONE_PRESS;
    _pBtn->m_iHoldTime = 0;
    _pBtn->m_iPrevHoldTime = 0;
    _pBtn->m_iTimeout = Rd_GetTime();
    rd_slist_append(&g_sBtnListHead, &(_pBtn->m_tSlist));
    _pBtn->m_iActive = 1;

END:
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);
    return RD_SUCCESS;
}

int rd_BtnStop(rd_btn_t *_pBtn)
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    if (!_pBtn->m_iActive) 
    {
        goto END;
        return RD_INVALUE;
    }
    rd_slist_remove(&g_sBtnListHead, &(_pBtn->m_tSlist));
    _pBtn->m_tSlist.next = NULL;
    _pBtn->m_iActive = 0;
    
END:
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);
    return RD_SUCCESS;
}

int rd_BtnSetEliminationTime(rd_btn_t *_pBtn, uint8_t _iEliminationTime)
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    _pBtn->m_iEliminationTime = _iEliminationTime;
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);

    return RD_SUCCESS;
}

int rd_BtnSetHoldCycleTime(rd_btn_t *_pBtn, uint32_t _iHoldCycleTime)
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    _pBtn->m_iHoldCycleTime = _iHoldCycleTime;
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);

    return RD_SUCCESS;
}

int rd_BtnSetEventCbk(rd_btn_t *_pBtn, rd_BtnEvent _eEvent, void (*_pEventCbk)(rd_btn_t *pBtn))
{
    if(NULL == _pBtn)
    {
        return RD_INVALUE;
    }

    if (_eEvent >= EVENT_NUM) return RD_INVALUE;
    
    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    _pBtn->m_pEventCbk[_eEvent] = _pEventCbk;
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);

    return RD_SUCCESS;
}

static void rd_BtnCalHoldTime(rd_btn_t *_pBtn)
{
    if(NULL == _pBtn)
    {
        return;
    }

    if (Rd_GetTime() < _pBtn->m_iTimeout) 
    {
        _pBtn->m_iHoldTime = UINT32_MAX - _pBtn->m_iTimeout + Rd_GetTime();
    } 
    else 
    {
        _pBtn->m_iHoldTime = Rd_GetTime() - _pBtn->m_iTimeout;
    }
}

void rd_BtnProcess(cbk_InPut _pFunc)
{
    rd_slist_t *pNode;
    rd_slist_t *pN;

    Rd_MutexLock(&g_fpBtnCtrl, __func__, NULL);
    rd_slist_for_each(pNode, pN, &g_sBtnListHead)
    {
        rd_btn_t *_pBtn = rd_slist_entry(pNode, rd_btn_t, m_tSlist);
        switch (_pBtn->m_tState) 
        {
            case STATE_NONE_PRESS: 
            {
                if (_pFunc() == _pBtn->m_iActiveLogic) 
                {
                    _pBtn->m_iTimeout = Rd_GetTime() + _pBtn->m_iEliminationTime;
                    _pBtn->m_tState = STATE_CHECK_PRESS;
                } 
                else 
                {
                    /* 间隔过大，清零 */
                    if (_pBtn->m_iRepeatCnt) 
                    {
                        if ((Rd_GetTime() - _pBtn->m_iTimeout) < (UINT32_MAX / 2)) 
                        {
                            _pBtn->m_iRepeatCnt = 0;
                        }
                    }
                }
            } break;
            case STATE_CHECK_PRESS: 
            {
                if (_pFunc() == _pBtn->m_iActiveLogic) 
                {
                    if ((Rd_GetTime() - _pBtn->m_iTimeout) < (UINT32_MAX / 2)) 
                    {
                        _pBtn->m_tState = STATE_PRESS_DOWN;
                    }
                } 
                else 
                {
                    _pBtn->m_tState = STATE_NONE_PRESS;
                }
            } break;
            case STATE_PRESS_DOWN: 
            {
                _pBtn->m_iHoldTime = 0;
                _pBtn->m_iPrevHoldTime = 0;
                _pBtn->m_iRepeatCnt++;
                _pBtn->m_tEvent = EVENT_PRESS_DOWN;
                RD_BUTTON_EVENT_CBK(_pBtn, _pBtn->m_tEvent);

                _pBtn->m_iTimeout = Rd_GetTime();
                _pBtn->m_tState = STATE_PRESS_HOLD;
            } break;
            case STATE_PRESS_HOLD: 
            {
                if (_pFunc() == _pBtn->m_iActiveLogic) 
                {
                    rd_BtnCalHoldTime(_pBtn);
                    if (_pBtn->m_iHoldTime - _pBtn->m_iPrevHoldTime >= _pBtn->m_iHoldCycleTime) 
                    {
                        _pBtn->m_tEvent = EVENT_HOLD;
                        RD_BUTTON_EVENT_CBK(_pBtn, _pBtn->m_tEvent);
                        _pBtn->m_iPrevHoldTime = _pBtn->m_iHoldTime;
                    }
                } 
                else 
                {
                    _pBtn->m_tState = STATE_PRESS_UP;
                }
            } break;
            case STATE_PRESS_UP: 
            {
                _pBtn->m_tEvent = EVENT_PRESS_UP;
                RD_BUTTON_EVENT_CBK(_pBtn, _pBtn->m_tEvent);
                _pBtn->m_tEvent = EVENT_CLICK;
                RD_BUTTON_EVENT_CBK(_pBtn, _pBtn->m_tEvent);

                _pBtn->m_iTimeout = Rd_GetTime() + RD_BUTTON_TWO_INTERVAL_TIME_DEFAULT;
                _pBtn->m_tState = STATE_NONE_PRESS;
            } break;
            default:
                break;
        }
    }
    Rd_MutexUnlock(&g_fpBtnCtrl, __func__, NULL);
}