#include "multi_led.h"

#define EVENT_CB(state)   if(handle->led_set_gpio) handle->led_set_gpio((bool)state)
	
//button handle list head.
static struct Led* head_handle = NULL;

/**
  * @brief  Initializes the button struct handle.
  * @param  handle: the button handle strcut.
  * @param  pin_level: read the HAL GPIO of the connet button level.
  * @param  active_level: pressed GPIO level.
  * @retval None
  */
void led_init_Head(void)
{
	head_handle = NULL;
}
void led_init(struct Led* handle, LedCallback led_set_gpio)
{
	memset(handle, 0, sizeof(struct Led));
	handle->led_set_gpio = led_set_gpio;
}

void led_set_state(struct Led* handle, u8 ID, u8 OnOff, u8 Type, u16 FlashTime, u16 CloseTime, bool Res )
{
	if ( Type < LED_STATE_MAX )
	{
		handle->Play.ID = ID;
		handle->Play.Type = Type;

		if ( Type != LED_STATE4_NOT )
		{
			handle->Play.OnOff = OnOff;
		}

		handle->Play.FlashTime = FlashTime;
		handle->Play.CloseTime = CloseTime;
		handle->Play.Count = 0;
		handle->Play.Res = Res;
	}
}


/**
  * @brief  Button driver core function, driver state machine.
  * @param  handle: the button handle strcut.
  * @retval None
  */
void led_handler(struct Led* handle)
{
    switch ( handle->Play.Type )
    {
    case LED_STATE0_OFF: 	//关
    	EVENT_CB(false);
        handle->Play.Type = LED_STATE_MAX;
        break;

    case LED_STATE1_ON: 	//开
    	EVENT_CB(true);
        handle->Play.Type = LED_STATE_MAX;
        break;

    case LED_STATE2_FLASH: //闪烁
        handle->Play.Count += LED_SCAN;

        if ( handle->Play.Count >= handle->Play.FlashTime )
        {
            handle->Play.Count = 0;
			EVENT_CB(handle->Play.OnOff);
			handle->Play.OnOff = !handle->Play.OnOff;			
        }

        break;

    case LED_STATE3_CONUT: //定时开关
        if ( handle->Play.CloseTime > 0 )
        {
            handle->Play.CloseTime -= LED_SCAN;
			EVENT_CB(handle->Play.Res);	//开始
        }
        else
        {
            handle->Play.CloseTime = 0;
			EVENT_CB(!handle->Play.Res);	//结束，与结果相反
            handle->Play.Type = LED_STATE_MAX;
        }

        break;

    case LED_STATE4_NOT: 	//取反
    	EVENT_CB(!handle->Play.OnOff);
        handle->Play.Type = LED_STATE_MAX;
        break;

    case LED_STATE5_FLASH_DELAY: 	//闪烁,延时关闭
        if ( handle->Play.CloseTime > 0 )
        {
            handle->Play.CloseTime -= LED_SCAN;
            //闪烁
            handle->Play.Count += LED_SCAN;		//开始

            if ( handle->Play.Count >= handle->Play.FlashTime )
            {
                handle->Play.Count = 0;
				EVENT_CB(handle->Play.OnOff);
				handle->Play.OnOff = !handle->Play.OnOff;			
            }
        }
        else
        {
            handle->Play.CloseTime = 0;
			EVENT_CB(handle->Play.Res);	//结束，与结果
            handle->Play.Type = LED_STATE_MAX;
        }

        break;
    }
}

/**
  * @brief  Start the button work, add the handle into work list.
  * @param  handle: target handle strcut.
  * @retval 0: succeed. -1: already exist.
  */
int led_start(struct Led* handle)
{
	struct Led* target = head_handle;
	while(target) {
		if(target == handle) return -1;	//already exist.
		target = target->next;
	}
	handle->next = head_handle;
	head_handle = handle;
	return 0;
}

/**
  * @brief  Stop the button work, remove the handle off work list.
  * @param  handle: target handle strcut.
  * @retval None
  */
void led_stop(struct Led* handle)
{
	struct Led** curr;
	for(curr = &head_handle; *curr; ) {
		struct Led* entry = *curr;
		if (entry == handle) {
			*curr = entry->next;
//			free(entry);
		} else {
			curr = &entry->next;
		}
	}
}

/**
  * @brief  background ticks, timer repeat invoking interval 5ms.
  * @param  None.
  * @retval None
  */
void led_ticks()
{
	struct Led* target;
	for(target=head_handle; target; target=target->next) {
		led_handler(target);
	}
}