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

    Phyplus Microelectronics Limited confidential and proprietary.
    All rights reserved.

    IMPORTANT: All rights of this software belong to Phyplus Microelectronics
    Limited ("Phyplus"). Your use of this Software is limited to those
    specific rights granted under  the terms of the business contract, the
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    of agreements as a customer or a partner of Phyplus. You may not use this
    Software unless you agree to abide by the terms of these agreements.
    You acknowledge that the Software may not be modified, copied,
    distributed or disclosed unless embedded on a Phyplus Bluetooth Low Energy
    (BLE) integrated circuit, either as a product or is integrated into your
    products.  Other than for the aforementioned purposes, you may not use,
    reproduce, copy, prepare derivative works of, modify, distribute, perform,
    display or sell this Software and/or its documentation for any purposes.

    YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
    PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
    INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
    NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
    PHYPLUS OR ITS SUBSIDIARIES BE LIABLE OR OBLIGATED UNDER CONTRACT,
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    LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
    INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
    OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
    OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
    (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.

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


#include <stdlib.h>
#include "OSAL.h"
#include <string.h>
#include <time.h>
#include "app_err.h"
#include "app_wrist.h"
#include "app_datetime.h"
#include "types.h"
#include "clock.h"
#include "log.h"

#ifndef USE_SYS_TICK
    #define USE_SYS_TICK  FASLE  //default use RTC, if system use RC32K as RTC clock source, system tick is usually recommended
#endif

#if(USE_SYS_TICK)
    #define RTC_CNT_RANGE 0x100000000
    #define TM_RATE (1000000/625)
#else
    #define RTC_CNT_RANGE 0x1000000
    #define TM_RATE (32768)
#endif
#define DT_INTV_SYNC 60    //sync interval every 60s



//static app_dtm_hdl_t s_evt_hdl = NULL;

static datetime_cfg_t s_stm_cfg = {0};

static const char* const month_str[12] =
{
    "Jan",
    "Feb",
    "Mar",
    "Apr",
    "May",
    "Jun",
    "Jul",
    "Aug",
    "Sep",
    "Oct",
    "Nov",
    "Dec"
};


static void app_datetime_adjust_baseline(struct tm* datetm);

static void print_hex (uint8_t* data, uint16 len)
{
    uint16 i;

    for (i = 0; i < len - 1; i++)
    {
        LOG("%x",data[i]);
        LOG(" ");
    }

    LOG("%x",data[i]);
}

static void dt_timer_start(uint32_t intval_ms)
{
    osal_start_timerEx(AppWrist_TaskID, TIMER_DT_EVT, intval_ms);
}

void timer_cnt_get(uint32_t* tick)
{
    #if(USE_SYS_TICK)
    *tick = hal_systick();         // read current RTC counter
    #else
    *tick = rtc_get_counter();         // read current RTC counter
    #endif
}


static void get_default_tm(struct tm* datetm)
{
    int i;
    datetime_t dtm;
    char dt[20];
    char* pstr = NULL;
    LOG(__DATE__);
    LOG(__TIME__);
    strcpy(dt, __DATE__);
    pstr = strtok(dt, " ");

    for(i = 0; i< 12; i++)
    {
        if(strcmp(dt,month_str[i]) == 0)
        {
            dtm.month = i+1;
            break;
        }
    }

    pstr = strtok(NULL, " ");
    dtm.day = atoi(pstr);
    pstr = strtok(NULL, " ");
    dtm.year = atoi(pstr);
    strcpy(dt, __TIME__);
    pstr = strtok(dt, ":");
    dtm.hour = atoi(pstr);
    pstr = strtok(NULL, ":");
    dtm.minutes = atoi(pstr);
    pstr = strtok(NULL, ":");
    dtm.seconds = atoi(pstr);
    DTM2TM(datetm, &dtm);
}


static void check_default_datetime(void)
{
    struct tm datetm;
    get_default_tm(&datetm);
    LOG("check_default_datetime\nTime is %d-%d-%d, %d:%d:%d",
        datetm.tm_year+1900,
        datetm.tm_mon+1,
        datetm.tm_mday,
        datetm.tm_hour,
        datetm.tm_min,
        datetm.tm_sec);
    app_datetime_adjust_baseline(&datetm);
    return;
}

static void datetime_print(void)
{
    datetime_t dtm;
    app_datetime(&dtm);
    LOG("Time is %d-%d-%d, %d:%d:%d\n", dtm.year, dtm.month, dtm.day, dtm.hour, dtm.minutes, dtm.seconds);
}

void app_datetime_sync_handler(void )
{
    uint32_t tick= 0;
    timer_cnt_get(&tick);

    if(tick < s_stm_cfg.snapshot)
        s_stm_cfg.tm_base += RTC_CNT_RANGE;

    s_stm_cfg.snapshot = tick;
    dt_timer_start(DATETIME_SYNC_INTERVAL);
    datetime_print();
}



static void app_datetime_adjust_baseline(struct tm* datetm)
{
    uint64_t tmstamp;
    uint32_t ticks;
    timer_cnt_get(&ticks);
    tmstamp = (uint64_t)mktime(datetm);
    LOG("%x",(uint32_t)tmstamp);
    tmstamp = tmstamp*TM_RATE;
    s_stm_cfg.tm_base = tmstamp - ticks;
    s_stm_cfg.snapshot = ticks;
    LOG("app_datetime_adjust_baseline:\n");
    print_hex((uint8_t*)&s_stm_cfg, sizeof(s_stm_cfg));
    LOG("\n");
}


int app_datetime_set(datetime_t dtm)
{
    struct tm tm;
    memset(&tm,0, sizeof(tm));
    DTM2TM(&tm, &dtm);
    LOG("\napp_datetime_set:\n");
    LOG("Time is %d-%d-%d, %d:%d:%d\n", dtm.year, dtm.month, dtm.day, dtm.hour, dtm.minutes, dtm.seconds);
    app_datetime_adjust_baseline(&tm);
    print_hex((uint8_t*)&s_stm_cfg, sizeof(s_stm_cfg));
    LOG("\n");
    return APP_SUCCESS;
}




int app_datetime_diff(const datetime_t* pdtm_base, const datetime_t* pdtm_cmp)
{
    time_t time_base, time_cmp;
    struct tm tm_base, tm_cmp;
    DTM2TM(&tm_base, pdtm_base);
    DTM2TM(&tm_cmp, pdtm_cmp);
    time_base = mktime(&tm_base);
    time_cmp = mktime(&tm_cmp);
    return (int)difftime(time_base, time_cmp);
}


time_t app_datetime_time_t(void)
{
    time_t tm = (time_t)(s_stm_cfg.tm_base / TM_RATE);
    return tm;
}

int app_datetime(datetime_t* pdtm)
{
    struct tm* ptm = NULL;
    uint32_t ticks;
    time_t tm = (time_t)(s_stm_cfg.tm_base / TM_RATE);
    timer_cnt_get(&ticks);

    if(s_stm_cfg.snapshot > ticks)
        tm += RTC_CNT_RANGE/TM_RATE;

    tm += ticks/TM_RATE;
    ptm = localtime(&tm);
    TM2DTM(pdtm, ptm)
    return APP_SUCCESS;
}

void app_datetime_init(void)//app_dtm_hdl_t evt_hdl)
{
    //s_evt_hdl = evt_hdl;
    check_default_datetime();
    dt_timer_start(DATETIME_SYNC_INTERVAL);
}

