/*
 * File      : at_utils.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-04-14     chenyong     first version
 */

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

static char send_buf[AT_CMD_MAX_LEN];
static rt_size_t last_cmd_len = 0;

/**
 * dump hex format data to console device
 *
 * @param name name for hex object, it will show on log header
 * @param buf hex buffer
 * @param size buffer size
 */
void at_print_raw_cmd(const char *name, const char *buf, rt_size_t size)
{
#define __is_print(ch)       ((unsigned int)((ch) - ' ') < 127u - ' ')
#define WIDTH_SIZE           32

    rt_size_t i, j;

    for (i = 0; i < size; i += WIDTH_SIZE)
    {
        rt_kprintf("[D/AT] %s: %04X-%04X: ", name, i, i + WIDTH_SIZE);
        for (j = 0; j < WIDTH_SIZE; j++)
        {
            if (i + j < size)
            {
                rt_kprintf("%02X ", buf[i + j]);
            }
            else
            {
                rt_kprintf("   ");
            }
            if ((j + 1) % 8 == 0)
            {
                rt_kprintf(" ");
            }
        }
        rt_kprintf("  ");
        for (j = 0; j < WIDTH_SIZE; j++)
        {
            if (i + j < size)
            {
                rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
            }
        }
        rt_kprintf("\n");
    }
}

const char *at_get_last_cmd(rt_size_t *cmd_size)
{
    *cmd_size = last_cmd_len;
    return send_buf;
}

rt_size_t at_vprintf(rt_device_t device, const char *format, va_list args)
{
    last_cmd_len = vsnprintf(send_buf, sizeof(send_buf), format, args);

#ifdef AT_PRINT_RAW_CMD
    at_print_raw_cmd("send", send_buf, last_cmd_len);
#endif

    return rt_device_write(device, 0, send_buf, last_cmd_len);
}

rt_size_t at_vprintfln(rt_device_t device, const char *format, va_list args)
{
    rt_size_t len;

    len = at_vprintf(device, format, args);

    rt_device_write(device, 0, "\r\n", 2);

    return len + 2;
}