/**
 * Copyright (2017) Baidu Inc. All rights reserved.
 *
 * 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.
 */
/**
 * File: lightduer_timers.c
 * Auth: Chang Li (changli@baidu.com)
 * Desc: Provide the timer APIs.
 */

#include "lightduer_timers.h"
#include "lightduer_log.h"
#include "lightduer_memory.h"
#include "lightduer_connagent.h"

#include "hsf.h"

#define DUER_TIMER_DELAY	(100)

typedef struct _duer_timers_s {
    hftimer_handle_t	_timer;
    duer_timer_callback _callback;
    void 				*_param;
} duer_timers_t;

static void duer_timer_callback_wrapper(hftimer_handle_t pxTimer)
{
    //unused int32_t lArrayIndex;
    //unused const int32_t xMaxExpiryCountBeforeStopping = 10;

    // Optionally do something if the pxTimer parameter is NULL.
    //configASSERT(pxTimer);
    if (!pxTimer) {
        DUER_LOGE("pxTimer is NULL!!\n");
    }

    // Which timer expired?
    duer_timers_t *timer = (duer_timers_t *)hftimer_get_timer_id(pxTimer);

    if (timer != NULL && timer->_callback != NULL) {
        timer->_callback(timer->_param);
    }
}

duer_timer_handler duer_timer_acquire(duer_timer_callback callback, void *param, int type)
{
    duer_timers_t *handle = NULL;
    int rs = DUER_ERR_FAILED;

    do {
        handle = (duer_timers_t *)DUER_MALLOC(sizeof(duer_timers_t));
        if (handle == NULL) {
            DUER_LOGE("Memory Overflow!!!");
            break;
        }

        handle->_callback = callback;
        handle->_param = param;

        handle->_timer = hftimer_create("duer_timers",   	// Just a text name, not used by the kernel.
                                        (0x7fffffff),		// The timer period in ticks.
                                        type == DUER_TIMER_PERIODIC ? true : false,	// The timers will auto-reload themselves when they expire.
                                        (uint32_t)handle,  			// Assign each timer a unique id equal to its array index.
                                        duer_timer_callback_wrapper,	// Each timer calls the same callback when it expires.
                                        0	//soft timer
                                       );
        if (handle->_timer == NULL) {
            DUER_LOGE("Timer Create Failed!!!");
            break;
        }

        rs = DUER_OK;
    } while (0);

    if (rs < DUER_OK) {
        duer_timer_release(handle);
        handle = NULL;
    }

    return handle;
}

int duer_timer_start(duer_timer_handler handle, size_t delay)
{
    duer_timers_t *timer = (duer_timers_t *)handle;
    int rs = DUER_ERR_FAILED;

    do {
        if (timer == NULL || timer->_timer == NULL) {
            rs = DUER_ERR_INVALID_PARAMETER;
            break;
        }

        hftimer_change_period(timer->_timer, delay);

        // Start the timer.  No block time is specified, and even if one was
        // it would be ignored because the scheduler has not yet been
        // started.
        if (hftimer_start(timer->_timer) != HF_SUCCESS) {
            // The timer could not be set into the Active state.
            DUER_LOGE("Failed to start timer");
            break;
        }

        rs = DUER_OK;
    } while (0);

    return rs;
}

int duer_timer_is_valid(duer_timer_handler handle)
{
    duer_timers_t *timer = (duer_timers_t *)handle;
    return ((timer != NULL) && (timer->_timer != NULL));
}

int duer_timer_stop(duer_timer_handler handle)
{
    duer_timers_t *timer = (duer_timers_t *)handle;
    if (timer != NULL && timer->_timer != NULL) {
        hftimer_stop(timer->_timer);
    }
}

void duer_timer_release(duer_timer_handler handle)
{
    duer_timers_t *timer = (duer_timers_t *)handle;
    if (timer != NULL) {
        if (timer->_timer != NULL) {
            duer_timer_stop(timer);
            hftimer_delete(timer->_timer);
            timer->_timer = NULL;
        }
        DUER_FREE(timer);
    }

}