/*
 *  Copyright (c) 2020, The OpenThread Authors.
 *  All rights reserved.
 *
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 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */

#include "posix/platform/radio_url.hpp"

#include <stdio.h>

#include <openthread/openthread-system.h>

#include "core/common/code_utils.hpp"
#include "posix/platform/platform-posix.h"

const char *otSysGetRadioUrlHelpString(void)
{
#if OPENTHREAD_POSIX_CONFIG_RCP_BUS == OT_POSIX_RCP_BUS_SPI
#define OT_RADIO_URL_HELP_BUS                                                                                  \
    "    spinel+spi://${PATH_TO_SPI_DEVICE}?${Parameters}\n"                                                   \
    "Parameters:\n"                                                                                            \
    "    gpio-int-device[=gpio-device-path]\n"                                                                 \
    "                                  Specify a path to the Linux sysfs-exported GPIO device for the\n"       \
    "                                  `I̅N̅T̅` pin. If not specified, `SPI` interface will fall back to\n" \
    "                                  polling, which is inefficient.\n"                                       \
    "    gpio-int-line[=line-offset]\n"                                                                        \
    "                                  The offset index of `I̅N̅T̅` pin for the associated GPIO device.\n"  \
    "                                  If not specified, `SPI` interface will fall back to polling,\n"         \
    "                                  which is inefficient.\n"                                                \
    "    gpio-reset-dev[=gpio-device-path]\n"                                                                  \
    "                                  Specify a path to the Linux sysfs-exported GPIO device for the\n"       \
    "                                  `R̅E̅S̅` pin.\n"                                                     \
    "    gpio-reset-line[=line-offset]"                                                                        \
    "                                  The offset index of `R̅E̅S̅` pin for the associated GPIO device.\n"  \
    "    spi-mode[=mode]               Specify the SPI mode to use (0-3).\n"                                   \
    "    spi-speed[=hertz]             Specify the SPI speed in hertz.\n"                                      \
    "    spi-cs-delay[=usec]           Specify the delay after C̅S̅ assertion, in µsec.\n"                  \
    "    spi-reset-delay[=ms]          Specify the delay after R̅E̅S̅E̅T̅ assertion, in milliseconds.\n"  \
    "    spi-align-allowance[=n]       Specify the maximum number of 0xFF bytes to clip from start of\n"       \
    "                                  MISO frame. Max value is 16.\n"                                         \
    "    spi-small-packet=[n]          Specify the smallest packet we can receive in a single transaction.\n"  \
    "                                  (larger packets will require two transactions). Default value is 32.\n"

#else

#define OT_RADIO_URL_HELP_BUS                                                                        \
    "    forkpty-arg[=argument string]  Command line arguments for subprocess, can be repeated.\n"   \
    "    spinel+hdlc+uart://${PATH_TO_UART_DEVICE}?${Parameters} for real uart device\n"             \
    "    spinel+hdlc+forkpty://${PATH_TO_UART_DEVICE}?${Parameters} for forking a pty subprocess.\n" \
    "Parameters:\n"                                                                                  \
    "    uart-parity[=even|odd]         Uart parity config, optional.\n"                             \
    "    uart-stop[=number-of-bits]     Uart stop bit, default is 1.\n"                              \
    "    uart-baudrate[=baudrate]       Uart baud rate, default is 115200.\n"                        \
    "    uart-flow-control              Enable flow control, disabled by default.\n"                 \
    "    uart-reset                     Reset connection after hard resetting RCP(USB CDC ACM).\n"

#endif // OPENTHREAD_POSIX_CONFIG_RCP_BUS == OT_POSIX_RCP_BUS_SPI

#if OPENTHREAD_POSIX_CONFIG_MAX_POWER_TABLE_ENABLE
#define OT_RADIO_URL_HELP_MAX_POWER_TABLE                                                                  \
    "    max-power-table               Max power for channels in ascending order separated by commas,\n"   \
    "                                  If the number of values is less than that of supported channels,\n" \
    "                                  the last value will be applied to all remaining channels.\n"        \
    "                                  Special value 0x7f disables a channel.\n"
#else
#define OT_RADIO_URL_HELP_MAX_POWER_TABLE
#endif

    return "RadioURL:\n" OT_RADIO_URL_HELP_BUS OT_RADIO_URL_HELP_MAX_POWER_TABLE
           "    region[=region-code]          Set the radio's region code.\n"
           "    cca-threshold[=dbm]           Set the radio's CCA ED threshold in dBm measured at antenna connector.\n"
           "    enable-coex[=1|0]             If not specified, RCP coex operates with its default configuration.\n"
           "                                  Disable coex with 0, and enable it with other values.\n"
           "    fem-lnagain[=dbm]             Set the Rx LNA gain in dBm of the external FEM.\n"
           "    ncp-dataset                   Retrieve dataset from ncp.\n"
           "    no-reset                      Do not send Spinel reset command to RCP on initialization.\n"
           "    skip-rcp-compatibility-check  Skip checking RCP API version and capabilities during initialization.\n";
}

namespace ot {
namespace Posix {

RadioUrl::RadioUrl(const char *aUrl)
{
    VerifyOrDie(strnlen(aUrl, sizeof(mUrl)) < sizeof(mUrl), OT_EXIT_INVALID_ARGUMENTS);
    strncpy(mUrl, aUrl, sizeof(mUrl) - 1);
    SuccessOrDie(Url::Url::Init(mUrl));
}

} // namespace Posix
} // namespace ot