/*
 * Copyright (C) 2015 by Multi-Tech Systems
 *
 * This file is part of radio-cmd.
 *
 * radio-cmd 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.
 *
 * radio-cmd 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 radio-cmd.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <mts/MTS_Text.h>
#include <mts/MTS_Logger.h>
#include <mts/MTS_AutoPtr.h>
#include <mts/MTS_IO_ICellularRadio.h>
#include <mts/MTS_IO_CellularRadioFactory.h>
#include <json/json.h>
#include <sstream>
#include <getopt.h>
#include <sys/stat.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <fstream>
#include <signal.h>
#include <fcntl.h>
#include <unistd.h>
#include "Version.h"

const std::string DEFAULT_PORT("/dev/modem_at1");
const int32_t DEFAULT_TIMEOUT = 100;
const std::string DEFAULT_COMMAND("AT");
const std::string DEFAULT_CACHE("/var/run/radio");
const std::string FMODEL("model");
const std::string FMSL("msl");

std::string g_sTimeout;
std::string g_sDevice(DEFAULT_PORT);
std::string g_sAtCommand(DEFAULT_COMMAND);
std::string g_sCache(DEFAULT_CACHE);
std::string g_sModel;

std::string g_sMDN;
std::string g_sMSID;
std::string g_sMSL;
std::string g_sMIPActiveProfile;
std::string g_sMIPNai;
std::string g_sMIPHomeAddr;
std::string g_sMIPPrimaryHa;
std::string g_sMIPSecondaryHa;
std::string g_sMIPMnAaaSpi;
std::string g_sMIPMnHaSpi;
std::string g_sMIPRevTun;
std::string g_sMIPMnAaaSs;
std::string g_sMIPMnHaSs;
std::string g_sRxDiversity;
std::string g_sActiveFirmware;
std::string g_sConfigFile;
Json::Value g_jData;
std::string g_sSimPin;
std::string g_sCellularMode;
std::string g_sDeltaFwPath;

MTS::AutoPtr<MTS::IO::ICellularRadio> g_apRadio;

int32_t g_iOptions = 0;

const uint32_t OPT_INDIVIDUAL          = 0x01FFFFFF;
const uint32_t OPT_SUMMARY             = 0x7E000000;
const uint32_t OPT_INITIALIZE          = 0x80000000;

const uint32_t OPT_TIMEOUT             = 0x00000001;
const uint32_t OPT_DEVICE              = 0x00000002;
const uint32_t OPT_COMMAND             = 0x00000004;
const uint32_t OPT_MSL                 = 0x00000008;
const uint32_t OPT_SETMDN              = 0x00000010;
const uint32_t OPT_SETMSID             = 0x00000020;
const uint32_t OPT_SETMSL              = 0x00000040;
const uint32_t OPT_SETMIPACTIVEPROFILE = 0x00000080;
const uint32_t OPT_SETMIPNAI           = 0x00000100;
const uint32_t OPT_SETMIPHOMEADDR      = 0x00000200;
const uint32_t OPT_SETMIPPRIMARYHA     = 0x00000400;
const uint32_t OPT_SETMIPSECONDARYHA   = 0x00000800;
const uint32_t OPT_SETMIPMNAAASPI      = 0x00001000;
const uint32_t OPT_SETMIPMNHASPI       = 0x00002000;
const uint32_t OPT_SETMIPREVTUN        = 0x00004000;
const uint32_t OPT_SETMIPMNAAASS       = 0x00008000;
const uint32_t OPT_SETMIPMNHASS        = 0x00010000;
const uint32_t OPT_INIT_DC             = 0x00020000;
const uint32_t OPT_INIT_FUMO           = 0x00040000;
const uint32_t OPT_INIT_PRL            = 0x00080000;
const uint32_t OPT_INIT_RTN            = 0x00100000;
const uint32_t OPT_INIT_ACTIVATION     = 0x00200000;
const uint32_t OPT_MDN                 = 0x00400000;
const uint32_t OPT_MSID                = 0x00800000;
const uint32_t OPT_SETRXDIVERSITY      = 0x01000000;
const uint32_t OPT_SETACTIVEFIRMWARE   = 0x02000000;
const uint32_t OPT_CONFIG_FILE         = 0x04000000;
const uint32_t OPT_SET_CELLULAR_MODE   = 0x08000000;
const uint32_t OPT_UNLOCK_SIM_CARD     = 0x20000000;
const uint32_t OPT_RESET_RADIO         = 0x40000000;

int32_t g_iAuxOptions = 0;
const uint32_t AOPT_DFU_UPLOAD         = 0x00000001;

void handle_sigterm(int signum);
void printHelp(const std::string& sApp);
void parseOptions(int argc, char** argv);
void initializeCache();
void shutdown();
const char *code2str(MTS::IO::ICellularRadio::CODE code);
std::string loadImeiFromDeviceInfo();
MTS::IO::ICellularRadio::CELLULAR_MODES cellularModeFlags(const std::string networks);


static int iOption = 0;
static struct option long_options[] = {
    { "help",                   no_argument,        0, '?' },
    { "version",                no_argument,        0, 'v' },
    { "printlvl",               required_argument,  0, 'p' },
    { "device",                 required_argument,  0, 'd' },
    { "config-file",            required_argument,  0, 'c' },
    { "set-mdn",                required_argument,  0, 'n' },
    { "set-msl",                required_argument,  0, 'm' },
    { "set-msid",               required_argument,  0, 's' },
    { "msl",                    required_argument,  0, 'l' },
    { "mdn",                    required_argument,  0, 'k' },
    { "msid",                   required_argument,  0, 'j' },
    { "set-active-firmware" ,   required_argument,  0, 'f' },
    { "set-rx-diversity",       required_argument,  0, 'r' },
    { "set-mip-active-profile", required_argument,  0, '0' },
    { "set-mip-nai",            required_argument,  0, '1' },
    { "set-mip-home-ip",        required_argument,  0, '2' },
    { "set-mip-primary-ha",     required_argument,  0, '3' },
    { "set-mip-secondary-ha",   required_argument,  0, '4' },
    { "set-mip-mn-aaa-spi",     required_argument,  0, '5' },
    { "set-mip-mn-ha-spi",      required_argument,  0, '6' },
    { "set-mip-rev-tun",        required_argument,  0, '7' },
    { "set-mip-mn-aaa-ss",      required_argument,  0, '8' },
    { "set-mip-mn-ha-ss",       required_argument,  0, '9' },
    { "unlock-sim-card",        required_argument,  0, OPT_UNLOCK_SIM_CARD },
    { "reset-radio",            no_argument,        &iOption, OPT_RESET_RADIO },
    { "init-dc",                no_argument,        &iOption, OPT_INIT_DC },
    { "init-fumo",              no_argument,        &iOption, OPT_INIT_FUMO },
    { "init-prl",               no_argument,        &iOption, OPT_INIT_PRL },
    { "init-activation",        no_argument,        &iOption, OPT_INIT_ACTIVATION },
    { "factory-default",        no_argument,        &iOption, OPT_INIT_RTN },
    { "set-cellular-mode",      required_argument,  0, 'w' },
    { "delta-fwu-upload",       required_argument,  0, 'x' },
    { 0, 0, 0, 0 }
};

Json::Value getStaticData();
Json::Value getNetworkData();
MTS::IO::ICellularRadio::CODE handleDeltaFwUpload(const std::string& sPath);

MTS::IO::ICellularRadio::UpdateCb cb = [](const Json::Value& s)->void {
    if(s.isString()) {
        printf("%s\n", s.asCString());
    }
};

int main(int argc, char** argv) {
    using namespace MTS::IO;

    //Disable stdout buffering so this process can pipe out data as needed
    // * otherwise entire stdout is buffered until process is closed using popen
    setbuf(stdout, NULL);

    signal(SIGTERM, handle_sigterm);
    signal(SIGINT, handle_sigterm);

    MTS::Logger::setPrintLevel(MTS::Logger::PrintLevel::OFF_LEVEL, true);

    parseOptions(argc, argv);

    if(!(g_iOptions & OPT_INITIALIZE)) {
        // get model from cache
        std::ifstream fModel((g_sCache + "/" + FMODEL).c_str());
        if(fModel.is_open()) {
            std::string sModel;
            fModel >> sModel;
            if(sModel.size() > 0) {
                printTrace("Pulling Model from cache: [%s]", sModel.c_str());
                g_sModel = sModel;
            }
        }
        // get msl from cache
        std::ifstream fMSL((g_sCache + "/" + FMSL).c_str());
        if(fMSL.is_open()) {
            std::string sMSL;
            fMSL >> sMSL;
            if(sMSL.size() > 0) {
                printTrace("Pulling Msl from cache: [%s]", sMSL.c_str());
                g_sMSL = sMSL;
                g_iOptions |= OPT_MSL;
            }
        }
    }

    MTS::IO::CellularRadioFactory factory;
    g_apRadio.reset(factory.create(g_sModel, g_sDevice));

    if(g_apRadio.isNull() || !g_apRadio->initialize()) {
        printf("Error creating radio interface [%s][%s]\n", g_sDevice.c_str(), g_sModel.c_str());
        return EXIT_FAILURE;
    }

    ICellularRadio::CODE result = ICellularRadio::CODE::SUCCESS;

    if(g_iOptions & OPT_COMMAND) {
        int32_t timeoutMillis = DEFAULT_TIMEOUT;
        if(g_iOptions & OPT_TIMEOUT) {
            timeoutMillis = atoi(g_sTimeout.c_str());
            if(!timeoutMillis) {
                printError("Timeout: invalid, use default timeout\n");
                timeoutMillis = DEFAULT_TIMEOUT;
            }
        }
        printDebug("AT Command: %s\n", g_sAtCommand.c_str());
        std::string sResult = g_apRadio->sendCommand(g_sAtCommand, MTS::IO::ICellularRadio::DEFAULT_BAIL_STRINGS, timeoutMillis);
        printDebug("RESULT: %s\n", sResult.c_str());
        // skip first line
        std::size_t pos = sResult.find('\n');
        if(pos == std::string::npos) {
            pos = 0;
        } else {
            ++pos;
        }
        printf("%s", sResult.substr(pos).c_str());
    } else if(g_iOptions & OPT_SETMDN) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MDN: %s\n", g_sMDN.c_str());
        jArgs["mdn"] = g_sMDN;
        if(g_iOptions & OPT_MSL) {
            printDebug("MSL: %s\n", g_sMSL.c_str());
            jArgs["msl"] = g_sMSL;
        }
        result = g_apRadio->setMdn(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMSID) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MSID: %s\n", g_sMSID.c_str());
        jArgs["msid"] = g_sMSID;
        if(g_iOptions & OPT_MSL) {
            printDebug("MSL: %s\n", g_sMSL.c_str());
            jArgs["msl"] = g_sMSL;
        }
        result = g_apRadio->setMsid(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPACTIVEPROFILE) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP ACTIVE PROFILE: %s\n", g_sMIPActiveProfile.c_str());
        jArgs["activeProfile"] = g_sMIPActiveProfile;
        result = g_apRadio->setMipActiveProfile(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPNAI) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP NAI: %s\n", g_sMIPNai.c_str());
        jArgs["nai"] = g_sMIPNai;
        result = g_apRadio->setMipNai(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPHOMEADDR) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP HOME ADDR: %s\n", g_sMIPHomeAddr.c_str());
        jArgs["homeIp"] = g_sMIPHomeAddr;
        result = g_apRadio->setMipHomeIp(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPPRIMARYHA) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP PRIMARY HA: %s\n", g_sMIPPrimaryHa.c_str());
        jArgs["primaryHa"] = g_sMIPPrimaryHa;
        result = g_apRadio->setMipPrimaryHa(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPSECONDARYHA) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP SECONDARY HA: %s\n", g_sMIPSecondaryHa.c_str());
        jArgs["secondaryHa"] = g_sMIPSecondaryHa;
        result = g_apRadio->setMipSecondaryHa(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPMNAAASPI) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP MN-AAA SPI: %s\n", g_sMIPMnAaaSpi.c_str());
        jArgs["mnAaaSpi"] = g_sMIPMnAaaSpi;
        result = g_apRadio->setMipMnAaaSpi(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPMNHASPI) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP MN-HA SPI: %s\n", g_sMIPMnHaSpi.c_str());
        jArgs["mnHaSpi"] = g_sMIPMnHaSpi;
        result = g_apRadio->setMipMnHaSpi(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPREVTUN) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP REV TUN: %s\n", g_sMIPRevTun.c_str());
        jArgs["revTun"] = g_sMIPRevTun;
        result = g_apRadio->setMipRevTun(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPMNAAASS) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP MN-AAA SS: %s\n", g_sMIPMnAaaSs.c_str());
        jArgs["mnAaaSs"] = g_sMIPMnAaaSs;
        result = g_apRadio->setMipMnAaaSs(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMIPMNHASS) {
        Json::Value jArgs(Json::objectValue);
        printDebug("SET MIP MN-HA SS: %s\n", g_sMIPMnHaSs.c_str());
        jArgs["mnHaSs"] = g_sMIPMnHaSs;
        result = g_apRadio->setMipMnHaSs(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETMSL) {
        Json::Value jArgs(Json::objectValue);
        jArgs["msl"] = g_sMSL;
        result = g_apRadio->validateMsl(jArgs);
        if(result == MTS::IO::ICellularRadio::CODE::SUCCESS) {
            std::ofstream fMSL((g_sCache + "/" + FMSL).c_str(), std::ios_base::trunc | std::ios_base::out);
            if(fMSL.is_open()) {
                std::string sMSL;
                fMSL << g_sMSL;
            }
        }
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_INIT_DC) {
        Json::Value jArgs(Json::nullValue);
        result = g_apRadio->updateDc(jArgs, cb);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_INIT_PRL) {
        Json::Value jArgs(Json::nullValue);
        result = g_apRadio->updatePrl(jArgs, cb);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_INIT_FUMO) {
        Json::Value jArgs(Json::objectValue);
        if(g_iOptions & OPT_CONFIG_FILE) {
            jArgs["config-file"] = g_sConfigFile;
        }
        result = g_apRadio->updateFumo(jArgs, cb);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_INIT_RTN) {
        Json::Value jArgs(Json::objectValue);
        if(g_iOptions & OPT_MSL) {
            printDebug("MSL: %s\n", g_sMSL.c_str());
            jArgs["msl"] = g_sMSL;
        }
        result = g_apRadio->resetHfa(jArgs, cb);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_INIT_ACTIVATION) {
        Json::Value jArgs(Json::objectValue);
        if(g_iOptions & OPT_MSID) {
            printDebug("MSID: %s", g_sMSID.c_str());
            jArgs["msid"] = g_sMSID;
        }
        if(g_iOptions & OPT_MDN) {
            printDebug("MDN: %s", g_sMDN.c_str());
            jArgs["mdn"] = g_sMDN;
        }
        result = g_apRadio->activate(jArgs, cb);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETRXDIVERSITY) {
        Json::Value jArgs(Json::objectValue);
        jArgs["enabled"] = g_sRxDiversity;
        result = g_apRadio->setRxDiversity(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SETACTIVEFIRMWARE) {
        Json::Value jArgs(Json::objectValue);
        jArgs["fwid"] = g_sActiveFirmware;
        result = g_apRadio->setActiveFirmware(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_UNLOCK_SIM_CARD) {
        Json::Value jArgs(Json::objectValue);
        jArgs["pin"] = g_sSimPin;
        result = g_apRadio->unlockSimCard(jArgs);
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_RESET_RADIO) {
        bool ret = g_apRadio->resetRadio();
        result = (ret) ? ICellularRadio::CODE::SUCCESS : ICellularRadio::CODE::FAILURE;
        printf("%s\n", code2str(result));
    } else if(g_iOptions & OPT_SET_CELLULAR_MODE) {
        ICellularRadio::CELLULAR_MODES networks = cellularModeFlags(g_sCellularMode);
        if (networks != ICellularRadio::CELLULAR_MODE_NA) {
            result = g_apRadio->setCellularMode(networks);
            printf("%s\n", code2str(result));
        } else {
            printf("Invalid argument: %s\n", g_sCellularMode.c_str());
        }
    } else if (g_iAuxOptions & AOPT_DFU_UPLOAD) {
        result = handleDeltaFwUpload(g_sDeltaFwPath);
    }

    shutdown();

    return (result == ICellularRadio::CODE::SUCCESS) ? 0 : 1;
}

void handle_sigterm(int signum) {
    if(signum == SIGTERM) {
        shutdown();
    }
}

void shutdown() {
    printDebug("Shutting Down");
    if(!g_apRadio.isNull()) {
        g_apRadio->shutdown();
    }
}

void parseOptions(int argc, char** argv)
{
    if(argc == 1) {
        printHelp(argv[0]);
        exit(0);
    }

    while (true) {
        int c = getopt_long(argc, argv, "t:d:p:r:?v", long_options, nullptr);

        /* Detect the end of the options. */
        if(c == -1) {
            break;
        }

        if(c == 0) {
            g_iOptions |= iOption;
            continue;
        }

        switch (c) {

            case '?':
                printHelp(argv[0]);
                exit(0);
                break;

            case 'v':
                printf("Version: %s\n", Version::version.c_str());
                exit(0);
                break;

            case 'p':
                int iPrintLvl;
                if(MTS::Text::parse(iPrintLvl, optarg) && iPrintLvl >= 0 && iPrintLvl <= 100) {
                    MTS::Logger::setPrintLevel(iPrintLvl);
                } else {
                    printf("print level out of range [0-100]\n");
                    exit(1);
                }
                break;

            case 'r':
                if(optarg != 0) {
                    g_sRxDiversity = optarg;
                }
                g_iOptions |= OPT_SETRXDIVERSITY;
                break;

            case 'f':
                if(optarg != 0) {
                    g_sActiveFirmware = optarg;
                }
                g_iOptions |= OPT_SETACTIVEFIRMWARE;
                break;

            case 't':
                if(optarg != 0) {
                    g_sTimeout = optarg;
                }
                g_iOptions |= OPT_TIMEOUT;
                break;

            case 'd':
                if(optarg != 0) {
                    g_sDevice = optarg;
                }
                g_iOptions |= OPT_DEVICE;
                break;

            case 'n':
                if(optarg != 0) {
                    g_sMDN = optarg;
                }
                g_iOptions |= OPT_SETMDN;
                break;

            case 's':
                if(optarg != 0) {
                    g_sMSID = optarg;
                }
                g_iOptions |= OPT_SETMSID;
                break;

            case 'm':
                if(optarg != 0) {
                    g_sMSL = optarg;
                }
                g_iOptions |= OPT_SETMSL;
                break;

            case 'c':
                if(optarg != 0) {
                    g_sConfigFile = optarg;
                }
                g_iOptions |= OPT_CONFIG_FILE;
                break;

            case 'l':
                if(optarg != 0) {
                    g_sMSL = optarg;
                }
                g_iOptions |= OPT_MSL;
                break;

            case 'k':
                if(optarg != 0) {
                    g_sMDN = optarg;
                }
                g_iOptions |= OPT_MDN;
                break;
            case 'j':
                if(optarg != 0) {
                    g_sMSID = optarg;
                }
                g_iOptions |= OPT_MSID;
                break;
            case '0':
                if(optarg != 0) {
                    g_sMIPActiveProfile = optarg;
                }
                g_iOptions |= OPT_SETMIPACTIVEPROFILE;
                break;

            case '1':
                if(optarg != 0) {
                    g_sMIPNai = optarg;
                }
                g_iOptions |= OPT_SETMIPNAI;
                break;

            case '2':
                if(optarg != 0) {
                    g_sMIPHomeAddr = optarg;
                }
                g_iOptions |= OPT_SETMIPHOMEADDR;
                break;

            case '3':
                if(optarg != 0) {
                    g_sMIPPrimaryHa = optarg;
                }
                g_iOptions |= OPT_SETMIPPRIMARYHA;
                break;

            case '4':
                if(optarg != 0) {
                    g_sMIPSecondaryHa = optarg;
                }
                g_iOptions |= OPT_SETMIPSECONDARYHA;
                break;

            case '5':
                if(optarg != 0) {
                    g_sMIPMnAaaSpi = optarg;
                }
                g_iOptions |= OPT_SETMIPMNAAASPI;
                break;

            case '6':
                if(optarg != 0) {
                    g_sMIPMnHaSpi = optarg;
                }
                g_iOptions |= OPT_SETMIPMNHASPI;
                break;

            case '7':
                if(optarg != 0) {
                    g_sMIPRevTun = optarg;
                }
                g_iOptions |= OPT_SETMIPREVTUN;
                break;

            case '8':
                if(optarg != 0) {
                    g_sMIPMnAaaSs = optarg;
                }
                g_iOptions |= OPT_SETMIPMNAAASS;
                break;

            case '9':
                if(optarg != 0) {
                    g_sMIPMnHaSs = optarg;
                }
                g_iOptions |= OPT_SETMIPMNHASS;
                break;

            case OPT_UNLOCK_SIM_CARD:
                if(optarg != 0) {
                    g_sSimPin = optarg;
                }
                g_iOptions |= OPT_UNLOCK_SIM_CARD;
                break;

            case 'w':
                if (optarg)
                    g_sCellularMode = optarg;
                g_iOptions |= OPT_SET_CELLULAR_MODE;
                break;

            case 'x':
                if (optarg)
                    g_sDeltaFwPath = optarg;
                g_iAuxOptions |= AOPT_DFU_UPLOAD;
                break;

            default:
                printf("OPTION: [%d] ABORTING!!\n", c);
                abort();
                break;
        }
    }

    if((g_iOptions & (OPT_TIMEOUT | OPT_DEVICE)) || !g_iOptions) {
        /* Assume that any remaining command line arguments is AT Command */
        if(optind < argc) {
            g_sAtCommand = argv[optind];
            g_iOptions |= OPT_COMMAND;
        }
    }

    printDebug("OPTS: %08X\n", g_iOptions);

}

void printHelp(const std::string& sApp) {
    printf("Usage: %s [OPTION] [<AT_COMMAND>] ...\n", sApp.c_str());
    printf("\tSimple utility to send either general AT command or predefined specific command to radio module\n");
    printf("\t<AT_COMMAND> [ -t <TIMEOUT> -d <DEVICE> ] : send AT command. Timeout and device are optional\n");
    printf("\t--device (d) <device>                     : modem device to use, default: /dev/modem_at1\n");
    printf("\t--init-dc                                 : initiate device configuration update\n");
    printf("\t--init-fumo [ --config-file <PATH> ]      : initiate module/modem firmware update\n");
    printf("\t--init-prl                                : initiate PRL update\n");
    printf("\t--init-activation [ --msid <MSID> --mdn <MDN>]\n");
    printf("\t                                          : initiate account activation.  Some carriers require MDN and MSID\n");
    printf("\n");
    printf("\t--set-mdn <MDN> [ --msl <MSL> ]           : set MDN value. Some carriers require MSL\n");
    printf("\t--set-msid <MSID> [ --msl <MSL> ]         : set MSID value. Some carriers require MSL\n");
    printf("\t--set-msl <MSL>                           : validate and save Master Subsidy Lock (MSL) in cache\n");
    printf("\t--set-mip-active-profile <VAL>            : set active MIP profile\n");
    printf("\t--set-mip-nai <VAL>                       : set MIP Network Access Identifier\n");
    printf("\t--set-mip-home-ip <VAL>                   : set MIP Home Address\n");
    printf("\t--set-mip-primary-ha <VAL>                : set MIP Primary Home Agent\n");
    printf("\t--set-mip-secondary-ha <VAL>              : set MIP Secondary Home Agent\n");
    printf("\t--set-mip-mn-aaa-spi <VAL>                : set MIP MN AAA SPI\n");
    printf("\t--set-mip-mn-ha-spi <VAL>                 : set MIP MN HA SPI\n");
    printf("\t--set-mip-rev-tun <VAL>                   : set MIP Reverse Tunneling\n");
    printf("\t--set-mip-mn-aaa-ss <VAL>                 : set MIP MN AAA SS\n");
    printf("\t--set-mip-mn-ha-ss <VAL>                  : set MIP MN HA SS\n");
    printf("\t--set-rx-diversity <VAL>                  : set RX Diversity\n");
    printf("\t--set-cellular-mode                       : set preferred networks eg. 2g,3g,4g\n");
    // Applicable for LTE910-NA1 dual FW images only
    // printf("\t--set-active-firmware <VAL>               : switch to a specific firmware image\n");
    printf("\t--factory-default [ --msl <MSL> ]         : reset to factory defaults\n");
    printf("\t--unlock-sim-card <SIM PIN>               : unlock the SIM card using the PIN code provided\n");
    printf("\t--reset-radio                             : reset the radio module using AT commands\n");
    printf("\t--delta-fwu-upload <FILE_PATH>            : upload a delta radio FWU file to the radio\n");
    printf("\n");
    printf("\t--printlvl (p) <level>                    : sets the printlvl [0-100]\n");
    printf("\t--version (v)                             : returns version\n");
    printf("\t--help (?)                                : returns this message\n");
    printf("\n");
    printf("\tSupported Radios:\n");
    printf("\t\tLE910, HE910, GE910, DE910, CE910, ME910, EG95\n");
}

const char *code2str(MTS::IO::ICellularRadio::CODE code) {
    switch (code) {
        case MTS::IO::ICellularRadio::CODE::SUCCESS:
            return "Success";
        case MTS::IO::ICellularRadio::CODE::ERROR:
            return "Error";
        case MTS::IO::ICellularRadio::CODE::FAILURE:
            return "Failure";
        case MTS::IO::ICellularRadio::CODE::NO_RESPONSE:
            return "No Response";
        case MTS::IO::ICellularRadio::CODE::NOT_APPLICABLE:
            return "Not Applicable";
        case MTS::IO::ICellularRadio::CODE::INVALID_ARGS:
            return "Invalid Arguments";
    }
    return "Unknown";
}

MTS::IO::ICellularRadio::CELLULAR_MODES cellularModeFlags(const std::string networks)
{
    using namespace MTS::IO;
    int result = ICellularRadio::CELLULAR_MODE_NA;
    const std::vector<std::string> &items = MTS::Text::split(networks, ",");
    for (const auto &it: items) {
        if (it == "2g") {
            result |= ICellularRadio::CELLULAR_MODE_2G;
        } else if (it == "3g") {
            result |= ICellularRadio::CELLULAR_MODE_3G;
        } else if (it == "4g") {
            result |= ICellularRadio::CELLULAR_MODE_4G;
        } else if (it == "5g") {
            result |= ICellularRadio::CELLULAR_MODE_5G;
        } else {
            result = ICellularRadio::CELLULAR_MODE_NA;
            break;
        }
    }
    return static_cast<ICellularRadio::CELLULAR_MODES>(result);
}

MTS::IO::ICellularRadio::CODE handleDeltaFwUpload(const std::string& sPath) {
    int fd = open(sPath.c_str(), O_RDONLY);
    if (fd < 0) {
        printf("Failed to open file [%s]: %d\n", sPath.c_str(), errno);
        return MTS::IO::ICellularRadio::CODE::ERROR;
    }

    auto rc = g_apRadio->uploadDeltaFirmwareFile(fd, cb);
    close(fd);

    return rc;
}