/*
 * EMS-ESP - https://github.com/emsesp/EMS-ESP
 * Copyright 2020  Paul Derbyshire
 * 
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "system.h"
#include "emsesp.h" // for send_raw_telegram() command

#if defined(EMSESP_DEBUG)
#include "test/test.h"
#endif

#ifndef EMSESP_STANDALONE
#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
#if CONFIG_IDF_TARGET_ESP32  // ESP32/PICO-D4
#include "../esp32/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "../esp32s2/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C3
#include "../esp32c3/rom/rtc.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
#else // ESP32 Before IDF 4.0
#include "../rom/rtc.h"
#endif
#endif
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel pixels(1, 7, NEO_GRB + NEO_KHZ800);
#endif

namespace emsesp {

// Languages supported. Note: the order is important and must match locale_translations.h
const char * const languages[] = {EMSESP_LOCALE_EN, EMSESP_LOCALE_DE, EMSESP_LOCALE_NL, EMSESP_LOCALE_SE, EMSESP_LOCALE_PL, EMSESP_LOCALE_NO};

size_t num_languages = sizeof(languages) / sizeof(const char *);

uuid::log::Logger System::logger_{F_(system), uuid::log::Facility::KERN};

#ifndef EMSESP_STANDALONE
uuid::syslog::SyslogService System::syslog_;
#endif

// init statics
PButton System::myPButton_;
bool    System::restart_requested_ = false;

// find the index of the language
// 0 = EN, 1 = DE, etc...
uint8_t System::language_index() {
    for (uint8_t i = 0; i < num_languages; i++) {
        if (languages[i] == locale()) {
            return i;
        }
    }
    return 0; // EN
}

// send raw to ems
bool System::command_send(const char * value, const int8_t id) {
    return EMSESP::txservice_.send_raw(value); // ignore id
}

// fetch device values
bool System::command_fetch(const char * value, const int8_t id) {
    std::string value_s;
    if (Helpers::value2string(value, value_s)) {
        if (value_s == "all") {
            LOG_INFO("Requesting data from EMS devices");
            EMSESP::fetch_device_values();
            return true;
        } else if (value_s == (F_(boiler))) {
            EMSESP::fetch_device_values_type(EMSdevice::DeviceType::BOILER);
            return true;
        } else if (value_s == (F_(thermostat))) {
            EMSESP::fetch_device_values_type(EMSdevice::DeviceType::THERMOSTAT);
            return true;
        } else if (value_s == (F_(solar))) {
            EMSESP::fetch_device_values_type(EMSdevice::DeviceType::SOLAR);
            return true;
        } else if (value_s == (F_(mixer))) {
            EMSESP::fetch_device_values_type(EMSdevice::DeviceType::MIXER);
            return true;
        }
    }

    EMSESP::fetch_device_values(); // default if no name or id is given
    return true;
}

// mqtt publish
bool System::command_publish(const char * value, const int8_t id) {
    std::string value_s;
    if (Helpers::value2string(value, value_s)) {
        if (value_s == "ha") {
            EMSESP::publish_all(true); // includes HA
            LOG_INFO("Publishing all data to MQTT, including HA configs");
            return true;
        } else if (value_s == (F_(boiler))) {
            EMSESP::publish_device_values(EMSdevice::DeviceType::BOILER);
            return true;
        } else if (value_s == (F_(thermostat))) {
            EMSESP::publish_device_values(EMSdevice::DeviceType::THERMOSTAT);
            return true;
        } else if (value_s == (F_(solar))) {
            EMSESP::publish_device_values(EMSdevice::DeviceType::SOLAR);
            return true;
        } else if (value_s == (F_(mixer))) {
            EMSESP::publish_device_values(EMSdevice::DeviceType::MIXER);
            return true;
        } else if (value_s == "other") {
            EMSESP::publish_other_values(); // switch and heat pump
            return true;
        } else if ((value_s == (F_(dallassensor))) || (value_s == (F_(analogsensor)))) {
            EMSESP::publish_sensor_values(true);
            return true;
        }
    }

    EMSESP::publish_all();
    LOG_INFO("Publishing all data to MQTT");

    return true;
}

// syslog level
bool System::command_syslog_level(const char * value, const int8_t id) {
    uint8_t s = 0xff;
    if (Helpers::value2enum(value, s, FL_(list_syslog_level))) {
        bool changed = false;
        EMSESP::webSettingsService.update(
            [&](WebSettings & settings) {
                if (settings.syslog_level != (int8_t)s - 1) {
                    settings.syslog_level = (int8_t)s - 1;
                    changed               = true;
                }
                return StateUpdateResult::CHANGED;
            },
            "local");
        if (changed) {
            EMSESP::system_.syslog_init();
        }
        return true;
    }
    return false;
}

// watch
bool System::command_watch(const char * value, const int8_t id) {
    uint8_t  w = 0xff;
    uint16_t i = Helpers::hextoint(value);
    if (Helpers::value2enum(value, w, FL_(list_watch))) {
        if (w == 0 || EMSESP::watch() == EMSESP::Watch::WATCH_OFF) {
            EMSESP::watch_id(0);
        }
        if (Mqtt::publish_single() && w != EMSESP::watch()) {
            if (Mqtt::publish_single2cmd()) {
                Mqtt::publish("system/watch", EMSESP::system_.enum_format() == ENUM_FORMAT_INDEX ? Helpers::itoa(w) : (FL_(list_watch)[w]));
            } else {
                Mqtt::publish("system_data/watch", EMSESP::system_.enum_format() == ENUM_FORMAT_INDEX ? Helpers::itoa(w) : (FL_(list_watch)[w]));
            }
        }
        EMSESP::watch(w);
        return true;
    } else if (i) {
        if (Mqtt::publish_single() && i != EMSESP::watch_id()) {
            if (Mqtt::publish_single2cmd()) {
                Mqtt::publish("system/watch", Helpers::hextoa(i));
            } else {
                Mqtt::publish("system_data/watch", Helpers::hextoa(i));
            }
        }
        EMSESP::watch_id(i);
        if (EMSESP::watch() == EMSESP::Watch::WATCH_OFF) {
            EMSESP::watch(EMSESP::Watch::WATCH_ON);
        }
        return true;
    }
    return false;
}

// restart EMS-ESP
void System::system_restart() {
    LOG_INFO("Restarting EMS-ESP...");
    Shell::loop_all();
    delay(1000); // wait a second
#ifndef EMSESP_STANDALONE
    ESP.restart();
#endif
}

// saves all settings
void System::wifi_reconnect() {
    LOG_INFO("WiFi reconnecting...");
    Shell::loop_all();
    EMSESP::console_.loop();
    delay(1000);                                                                   // wait a second
    EMSESP::webSettingsService.save();                                             // local settings
    EMSESP::esp8266React.getNetworkSettingsService()->callUpdateHandlers("local"); // in case we've changed ssid or password
}

// format the FS. Wipes everything.
void System::format(uuid::console::Shell & shell) {
    auto msg = ("Formatting file system. This will reset all settings to their defaults");
    shell.logger().warning(msg);
    shell.flush();

    EMSuart::stop();

#ifndef EMSESP_STANDALONE
    LittleFS.format();
#endif

    System::system_restart();
}

void System::syslog_init() {
#ifndef EMSESP_STANDALONE
    bool was_enabled = syslog_enabled_;
#endif
    EMSESP::webSettingsService.read([&](WebSettings & settings) {
        syslog_enabled_       = settings.syslog_enabled;
        syslog_level_         = settings.syslog_level;
        syslog_mark_interval_ = settings.syslog_mark_interval;
        syslog_host_          = settings.syslog_host;
        syslog_port_          = settings.syslog_port;
    });
#ifndef EMSESP_STANDALONE
    if (syslog_enabled_) {
        // start & configure syslog
        if (!was_enabled) {
            syslog_.start();
            EMSESP::logger().info("Starting Syslog");
        }
        syslog_.log_level((uuid::log::Level)syslog_level_);
        syslog_.mark_interval(syslog_mark_interval_);
        syslog_.destination(syslog_host_.c_str(), syslog_port_);
        syslog_.hostname(hostname().c_str());

        // register the command
        Command::add(EMSdevice::DeviceType::SYSTEM, F_(syslog), System::command_syslog_level, FL_(changeloglevel_cmd), CommandFlag::ADMIN_ONLY);

    } else if (was_enabled) {
        // in case service is still running, this flushes the queue
        // https://github.com/emsesp/EMS-ESP/issues/496
        EMSESP::logger().info("Stopping Syslog");
        syslog_.log_level((uuid::log::Level)-1);
        syslog_.mark_interval(0);
        syslog_.destination("");
    }

    if (Mqtt::publish_single()) {
        if (Mqtt::publish_single2cmd()) {
            Mqtt::publish("system/syslog", syslog_enabled_ ? (FL_(list_syslog_level)[syslog_level_ + 1]) : "off");
            if (EMSESP::watch_id() == 0 || EMSESP::watch() == 0) {
                Mqtt::publish("system/watch",
                              EMSESP::system_.enum_format() == ENUM_FORMAT_INDEX ? Helpers::itoa(EMSESP::watch()) : (FL_(list_watch)[EMSESP::watch()]));
            } else {
                Mqtt::publish("system/watch", Helpers::hextoa(EMSESP::watch_id()));
            }

        } else {
            Mqtt::publish("system_data/syslog", syslog_enabled_ ? (FL_(list_syslog_level)[syslog_level_ + 1]) : "off");
            if (EMSESP::watch_id() == 0 || EMSESP::watch() == 0) {
                Mqtt::publish("system_data/watch",
                              EMSESP::system_.enum_format() == ENUM_FORMAT_INDEX ? Helpers::itoa(EMSESP::watch()) : (FL_(list_watch)[EMSESP::watch()]));
            } else {
                Mqtt::publish("system_data/watch", Helpers::hextoa(EMSESP::watch_id()));
            }
        }
    }
#endif
}

// read some specific system settings to store locally for faster access
void System::reload_settings() {
    EMSESP::webSettingsService.read([&](WebSettings & settings) {
        pbutton_gpio_   = settings.pbutton_gpio;
        analog_enabled_ = settings.analog_enabled;
        low_clock_      = settings.low_clock;
        hide_led_       = settings.hide_led;
        led_gpio_       = settings.led_gpio;
        board_profile_  = settings.board_profile;
        telnet_enabled_ = settings.telnet_enabled;

        rx_gpio_     = settings.rx_gpio;
        tx_gpio_     = settings.tx_gpio;
        dallas_gpio_ = settings.dallas_gpio;

        syslog_enabled_       = settings.syslog_enabled;
        syslog_level_         = settings.syslog_level;
        syslog_mark_interval_ = settings.syslog_mark_interval;
        syslog_host_          = settings.syslog_host;
        syslog_port_          = settings.syslog_port;

        fahrenheit_     = settings.fahrenheit;
        bool_format_    = settings.bool_format;
        bool_dashboard_ = settings.bool_dashboard;
        enum_format_    = settings.enum_format;
        readonly_mode_  = settings.readonly_mode;

        phy_type_       = settings.phy_type;
        eth_power_      = settings.eth_power;
        eth_phy_addr_   = settings.eth_phy_addr;
        eth_clock_mode_ = settings.eth_clock_mode;

        locale_ = settings.locale;
    });
}

// adjust WiFi settings
// this for problem solving mesh and connection issues, and also get EMS bus-powered more stable by lowering power
void System::wifi_tweak() {
#if defined(EMSESP_WIFI_TWEAK)
    // Default Tx Power is 80 = 20dBm <-- default
    // WIFI_POWER_19_5dBm = 78,// 19.5dBm
    // WIFI_POWER_19dBm = 76,// 19dBm
    // WIFI_POWER_18_5dBm = 74,// 18.5dBm
    // WIFI_POWER_17dBm = 68,// 17dBm
    // WIFI_POWER_15dBm = 60,// 15dBm
    // WIFI_POWER_13dBm = 52,// 13dBm
    // WIFI_POWER_11dBm = 44,// 11dBm
    // WIFI_POWER_8_5dBm = 34,// 8.5dBm
    // WIFI_POWER_7dBm = 28,// 7dBm
    // WIFI_POWER_5dBm = 20,// 5dBm
    // WIFI_POWER_2dBm = 8,// 2dBm
    // WIFI_POWER_MINUS_1dBm = -4// -1dBm
    wifi_power_t p1 = WiFi.getTxPower();
    (void)WiFi.setTxPower(WIFI_POWER_17dBm);
    wifi_power_t p2 = WiFi.getTxPower();
    bool         s1 = WiFi.getSleep();
    WiFi.setSleep(false); // turn off sleep - WIFI_PS_NONE
    bool s2 = WiFi.getSleep();
#if defined(EMSESP_DEBUG)
    LOG_DEBUG("[DEBUG] Adjusting WiFi - Tx power %d->%d, Sleep %d->%d", p1, p2, s1, s2);
#endif
#endif
}

// check for valid ESP32 pins. This is very dependent on which ESP32 board is being used.
// Typically you can't use 1, 6-11, 12, 14, 15, 20, 24, 28-31 and 40+
// we allow 0 as it has a special function on the NodeMCU apparently
// See https://diyprojects.io/esp32-how-to-use-gpio-digital-io-arduino-code/#.YFpVEq9KhjG
// and https://nodemcu.readthedocs.io/en/dev-esp32/modules/gpio/
bool System::is_valid_gpio(uint8_t pin) {
#if CONFIG_IDF_TARGET_ESP32 || EMSESP_STANDALONE
    if ((pin == 1) || (pin >= 6 && pin <= 12) || (pin >= 14 && pin <= 15) || (pin == 20) || (pin == 24) || (pin >= 28 && pin <= 31) || (pin > 40)) {
#elif CONFIG_IDF_TARGET_ESP32S2
    if ((pin >= 19 && pin <= 20) || (pin >= 22 && pin <= 32) || (pin > 40)) {
#elif CONFIG_IDF_TARGET_ESP32C3
    // https://www.wemos.cc/en/latest/c3/c3_mini.html
    if ((pin >= 11 && pin <= 19) || (pin > 21)) {
#endif
        return false; // bad pin
    }
    return true;
}

// Starts up the UART Serial bridge
void System::start() {
#ifndef EMSESP_STANDALONE
    // disable bluetooth module
    // periph_module_disable(PERIPH_BT_MODULE);
    if (low_clock_) {
        setCpuFrequencyMhz(160);
    }
    fstotal_ = LittleFS.totalBytes() / 1024; // read only once, it takes 500 ms to read
    psram_   = ESP.getPsramSize() / 1024;
    appused_ = ESP.getSketchSize() / 1024;
    appfree_ = ESP.getFreeSketchSpace() / 1024 - appused_;
#endif

    EMSESP::esp8266React.getNetworkSettingsService()->read([&](NetworkSettings & networkSettings) {
        hostname(networkSettings.hostname.c_str()); // sets the hostname
    });

    commands_init();     // console & api commands
    led_init(false);     // init LED
    button_init(false);  // the special button
    network_init(false); // network
    syslog_init();       // start Syslog

    EMSESP::uart_init(); // start UART
}

// button single click
void System::button_OnClick(PButton & b) {
    LOG_DEBUG("Button pressed - single click");

#ifdef EMSESP_DEBUG
#ifndef EMSESP_STANDALONE
    Test::listDir(LittleFS, FS_CONFIG_DIRECTORY, 3);
#endif
#endif
}

// button double click
void System::button_OnDblClick(PButton & b) {
    LOG_DEBUG("Button pressed - double click - reconnect");
    EMSESP::system_.wifi_reconnect();
}

// button long press
void System::button_OnLongPress(PButton & b) {
    LOG_DEBUG("Button pressed - long press");
}

// button indefinite press
void System::button_OnVLongPress(PButton & b) {
    LOG_DEBUG("Button pressed - very long press");
#ifndef EMSESP_STANDALONE
    LOG_WARNING("Performing factory reset...");
    EMSESP::console_.loop();
    EMSESP::esp8266React.factoryReset();
#endif
}

// push button
void System::button_init(bool refresh) {
    if (refresh) {
        reload_settings();
    }

    if (is_valid_gpio(pbutton_gpio_)) {
        if (!myPButton_.init(pbutton_gpio_, HIGH)) {
            LOG_DEBUG("Multi-functional button not detected");
        } else {
            LOG_DEBUG("Multi-functional button enabled");
        }
    } else {
        LOG_WARNING("Invalid button GPIO. Check config.");
    }

    myPButton_.onClick(BUTTON_Debounce, button_OnClick);
    myPButton_.onDblClick(BUTTON_DblClickDelay, button_OnDblClick);
    myPButton_.onLongPress(BUTTON_LongPressDelay, button_OnLongPress);
    myPButton_.onVLongPress(BUTTON_VLongPressDelay, button_OnVLongPress);
}

// set the LED to on or off when in normal operating mode
void System::led_init(bool refresh) {
    if (refresh) {
        reload_settings();
    }

    if ((led_gpio_ != 0) && is_valid_gpio(led_gpio_)) {
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
        // rgb LED WS2812B, use Adafruit Neopixel
        // Adafruit_NeoPixel pixels(1, 7, NEO_GRB + NEO_KHZ800);
        pixels.begin();
        pixels.setPin(led_gpio_);
        // pixels.setBrightness(0);
        // pixels.Color(0, 0, 0, 0);
        // pixels.show();
#else
        pinMode(led_gpio_, OUTPUT);       // 0 means disabled
        digitalWrite(led_gpio_, !LED_ON); // start with LED off
#endif
    }
}

// returns true if OTA is uploading
bool System::upload_status() {
#if defined(EMSESP_STANDALONE)
    return false;
#else
    return upload_status_ || Update.isRunning();
#endif
}

void System::upload_status(bool in_progress) {
    // if we've just started an upload
    if (!upload_status_ && in_progress) {
        EMSuart::stop();
    }
    upload_status_ = in_progress;
}

// checks system health and handles LED flashing wizardry
void System::loop() {
    // check if we're supposed to do a reset/restart
    if (restart_requested()) {
        this->system_restart();
    }

#ifndef EMSESP_STANDALONE
    myPButton_.check(); // check button press

    if (syslog_enabled_) {
        syslog_.loop();
    }

    led_monitor();  // check status and report back using the LED
    system_check(); // check system health

    // send out heartbeat
    uint32_t currentMillis = uuid::get_uptime();
    if (!last_heartbeat_ || (currentMillis - last_heartbeat_ > SYSTEM_HEARTBEAT_INTERVAL)) {
        last_heartbeat_ = currentMillis;
        send_heartbeat();
    }
#ifndef EMSESP_STANDALONE

#if defined(EMSESP_DEBUG)
/*
    static uint32_t last_memcheck_ = 0;
    if (currentMillis - last_memcheck_ > 10000) { // 10 seconds
        last_memcheck_ = currentMillis;
        show_mem("core");
    }
    */
#endif

#endif

#endif
}

// create the json for heartbeat
bool System::heartbeat_json(JsonObject & output) {
    uint8_t bus_status = EMSESP::bus_status();
    if (bus_status == EMSESP::BUS_STATUS_TX_ERRORS) {
        output["bus_status"] = "txerror";
    } else if (bus_status == EMSESP::BUS_STATUS_CONNECTED) {
        output["bus_status"] = "connected";
    } else {
        output["bus_status"] = "disconnected";
    }

    output["uptime"]     = uuid::log::format_timestamp_ms(uuid::get_uptime_ms(), 3);
    output["uptime_sec"] = uuid::get_uptime_sec();
    bool value_b         = EMSESP::system_.ntp_connected();
    if (Mqtt::ha_enabled()) {
        char s[12];
        output["ntp_status"] = Helpers::render_boolean(s, value_b); // for HA always render as string
    } else if (EMSESP::system_.bool_format() == BOOL_FORMAT_TRUEFALSE) {
        output["ntp_status"] = value_b;
    } else if (EMSESP::system_.bool_format() == BOOL_FORMAT_10) {
        output["ntp_status"] = value_b ? 1 : 0;
    } else {
        char s[12];
        output["ntp_status"] = Helpers::render_boolean(s, value_b);
    }
    output["rxreceived"] = EMSESP::rxservice_.telegram_count();
    output["rxfails"]    = EMSESP::rxservice_.telegram_error_count();
    output["txreads"]    = EMSESP::txservice_.telegram_read_count();
    output["txwrites"]   = EMSESP::txservice_.telegram_write_count();
    output["txfails"]    = EMSESP::txservice_.telegram_read_fail_count() + EMSESP::txservice_.telegram_write_fail_count();

    if (Mqtt::enabled()) {
        output["mqttcount"]    = Mqtt::publish_count();
        output["mqttfails"]    = Mqtt::publish_fails();
        output["mqttconnects"] = Mqtt::connect_count();
    }
    output["apicalls"] = WebAPIService::api_count(); // + WebAPIService::api_fails();
    output["apifails"] = WebAPIService::api_fails();

    if (EMSESP::dallas_enabled() || EMSESP::analog_enabled()) {
        output["sensorreads"] = EMSESP::dallassensor_.reads() + EMSESP::analogsensor_.reads();
        output["sensorfails"] = EMSESP::dallassensor_.fails() + EMSESP::analogsensor_.fails();
    }

#ifndef EMSESP_STANDALONE
    output["freemem"] = ESP.getFreeHeap() / 1024; // kilobytes
#endif

#ifndef EMSESP_STANDALONE
    if (!ethernet_connected_) {
        int8_t rssi            = WiFi.RSSI();
        output["rssi"]         = rssi;
        output["wifistrength"] = wifi_quality(rssi);
    }
#endif

    return true;
}

// send periodic MQTT message with system information
void System::send_heartbeat() {
    // don't send heartbeat if WiFi or MQTT is not connected
    if (!Mqtt::connected()) {
        return;
    }

    StaticJsonDocument<EMSESP_JSON_SIZE_MEDIUM> doc;
    JsonObject                                  json = doc.to<JsonObject>();

    if (heartbeat_json(json)) {
        Mqtt::publish(F_(heartbeat), json); // send to MQTT with retain off. This will add to MQTT queue.
    }
}

// initializes network
void System::network_init(bool refresh) {
    if (refresh) {
        reload_settings();
    }

    last_system_check_ = 0; // force the LED to go from fast flash to pulse
    send_heartbeat();

    if (phy_type_ == PHY_type::PHY_TYPE_NONE) {
        return;
    }

    // configure Ethernet
    int            mdc      = 23;            // Pin# of the I²C clock signal for the Ethernet PHY - hardcoded
    int            mdio     = 18;            // Pin# of the I²C IO signal for the Ethernet PHY - hardcoded
    uint8_t        phy_addr = eth_phy_addr_; // I²C-address of Ethernet PHY (0 or 1 for LAN8720, 31 for TLK110)
    int8_t         power    = eth_power_;    // Pin# of the enable signal for the external crystal oscillator (-1 to disable for internal APLL source)
    eth_phy_type_t type     = (phy_type_ == PHY_type::PHY_TYPE_LAN8720) ? ETH_PHY_LAN8720 : ETH_PHY_TLK110; // Type of the Ethernet PHY (LAN8720 or TLK110)
    // clock mode
    // ETH_CLOCK_GPIO0_IN   = 0  RMII clock input to GPIO0
    // ETH_CLOCK_GPIO0_OUT  = 1  RMII clock output from GPIO0
    // ETH_CLOCK_GPIO16_OUT = 2  RMII clock output from GPIO16
    // ETH_CLOCK_GPIO17_OUT = 3  RMII clock output from GPIO17, for 50hz inverted clock
    auto clock_mode = (eth_clock_mode_t)eth_clock_mode_;

    ETH.begin(phy_addr, power, mdc, mdio, type, clock_mode);
}

// check health of system, done every 5 seconds
void System::system_check() {
    if (!last_system_check_ || ((uint32_t)(uuid::get_uptime() - last_system_check_) >= SYSTEM_CHECK_FREQUENCY)) {
        last_system_check_ = uuid::get_uptime();

        // check if we have a valid network connection
        if (!ethernet_connected() && (WiFi.status() != WL_CONNECTED)) {
            healthcheck_ |= HEALTHCHECK_NO_NETWORK;
        } else {
            healthcheck_ &= ~HEALTHCHECK_NO_NETWORK;
        }

        // check if we have a bus connection
        if (!EMSbus::bus_connected()) {
            healthcheck_ |= HEALTHCHECK_NO_BUS;
        } else {
            healthcheck_ &= ~HEALTHCHECK_NO_BUS;
        }

        // see if the healthcheck state has changed
        static uint8_t last_healthcheck_ = 0;
        if (healthcheck_ != last_healthcheck_) {
            last_healthcheck_ = healthcheck_;
            // see if we're better now
            if (healthcheck_ == 0) {
                // everything is healthy, show LED permanently on or off depending on setting
                if (led_gpio_) {
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
                    pixels.setPixelColor(0, 0, hide_led_ ? 0 : 128, 0);
                    pixels.show();
#else
                    digitalWrite(led_gpio_, hide_led_ ? !LED_ON : LED_ON);
#endif
                }
                send_heartbeat();
            } else {
                // turn off LED so we're ready to the flashes
                if (led_gpio_) {
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
                    pixels.setPixelColor(0, 0, 0, 0);
                    pixels.show();
#else
                    digitalWrite(led_gpio_, !LED_ON);
#endif
                }
            }
        }
    }
}

// commands - takes static function pointers
void System::commands_init() {
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(send), System::command_send, FL_(send_cmd), CommandFlag::ADMIN_ONLY);
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(fetch), System::command_fetch, FL_(fetch_cmd), CommandFlag::ADMIN_ONLY);
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(restart), System::command_restart, FL_(restart_cmd), CommandFlag::ADMIN_ONLY);
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(watch), System::command_watch, FL_(watch_cmd));

    if (Mqtt::enabled()) {
        Command::add(EMSdevice::DeviceType::SYSTEM, F_(publish), System::command_publish, FL_(publish_cmd));
    }

    // these commands will return data in JSON format
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(info), System::command_info, FL_(system_info_cmd));
    Command::add(EMSdevice::DeviceType::SYSTEM, F_(commands), System::command_commands, FL_(commands_cmd));

#if defined(EMSESP_DEBUG)
    Command::add(EMSdevice::DeviceType::SYSTEM, ("test"), System::command_test, FL_(test_cmd));
#endif

    // MQTT subscribe "ems-esp/system/#"
    Mqtt::subscribe(EMSdevice::DeviceType::SYSTEM, "system/#", nullptr); // use empty function callback
}

// uses LED to show system health
void System::led_monitor() {
    // we only need to run the LED healthcheck if there are errors
    if (!healthcheck_ || !led_gpio_) {
        return; // all good
    }

    static uint32_t led_long_timer_  = 1; // 1 will kick it off immediately
    static uint32_t led_short_timer_ = 0;
    static uint8_t  led_flash_step_  = 0; // 0 means we're not in the short flash timer
    auto            current_time     = uuid::get_uptime();

    // first long pause before we start flashing
    if (led_long_timer_ && (uint32_t)(current_time - led_long_timer_) >= HEALTHCHECK_LED_LONG_DUARATION) {
        // Serial.println("starting the flash check");
        led_short_timer_ = current_time; // start the short timer
        led_long_timer_  = 0;            // stop long timer
        led_flash_step_  = 1;            // enable the short flash timer
    }

    // the flash timer which starts after the long pause
    if (led_flash_step_ && (uint32_t)(current_time - led_short_timer_) >= HEALTHCHECK_LED_FLASH_DUARATION) {
        led_long_timer_     = 0; // stop the long timer
        led_short_timer_    = current_time;
        static bool led_on_ = false;

        if (++led_flash_step_ == 8) {
            // reset the whole sequence
            // Serial.println("resetting flash check");
            led_long_timer_ = uuid::get_uptime();
            led_flash_step_ = 0;
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
            pixels.setPixelColor(0, 0, 0, 0);
            pixels.show();
#else
            digitalWrite(led_gpio_, !LED_ON); // LED off
#endif
        } else if (led_flash_step_ % 2) {
            // handle the step events (on odd numbers 3,5,7,etc). see if we need to turn on a LED
            //  1 flash is the EMS bus is not connected
            //  2 flashes if the network (wifi or ethernet) is not connected
            //  3 flashes is both the bus and the network are not connected. Then you know you're truly f*cked.

#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
            if (led_flash_step_ == 3) {
                if ((healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK) {
                    pixels.setPixelColor(0, 128, 0, 0); // red
                } else if ((healthcheck_ & HEALTHCHECK_NO_BUS) == HEALTHCHECK_NO_BUS) {
                    pixels.setPixelColor(0, 0, 0, 128); // blue
                }
            }
            if (led_flash_step_ == 5 && (healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK) {
                pixels.setPixelColor(0, 128, 0, 0); // red
            }
            if ((led_flash_step_ == 7) && ((healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK)
                && ((healthcheck_ & HEALTHCHECK_NO_BUS) == HEALTHCHECK_NO_BUS)) {
                pixels.setPixelColor(0, 0, 0, 128); // blue
            }
            pixels.show();
#else

            if ((led_flash_step_ == 3)
                && (((healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK) || ((healthcheck_ & HEALTHCHECK_NO_BUS) == HEALTHCHECK_NO_BUS))) {
                led_on_ = true;
            }

            if ((led_flash_step_ == 5) && ((healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK)) {
                led_on_ = true;
            }

            if ((led_flash_step_ == 7) && ((healthcheck_ & HEALTHCHECK_NO_NETWORK) == HEALTHCHECK_NO_NETWORK)
                && ((healthcheck_ & HEALTHCHECK_NO_BUS) == HEALTHCHECK_NO_BUS)) {
                led_on_ = true;
            }

            if (led_on_) {
                digitalWrite(led_gpio_, LED_ON); // LED off
            }
#endif
        } else {
            // turn the led off after the flash, on even number count
            if (led_on_) {
#if defined(ARDUINO_LOLIN_C3_MINI) && !defined(BOARD_C3_MINI_V1)
                pixels.setPixelColor(0, 0, 0, 0);
                pixels.show();
#else
                digitalWrite(led_gpio_, !LED_ON); // LED off
#endif
                led_on_ = false;
            }
        }
    }
}

// Return the quality (Received Signal Strength Indicator) of the WiFi network as a %
//  High quality: 90% ~= -55dBm
//  Medium quality: 50% ~= -75dBm
//  Low quality: 30% ~= -85dBm
//  Unusable quality: 8% ~= -96dBm
int8_t System::wifi_quality(int8_t dBm) {
    if (dBm <= -100) {
        return 0;
    }

    if (dBm >= -50) {
        return 100;
    }
    return 2 * (dBm + 100);
}

// print users to console
void System::show_users(uuid::console::Shell & shell) {
    shell.printfln("Users:");

#ifndef EMSESP_STANDALONE
    EMSESP::esp8266React.getSecuritySettingsService()->read([&](SecuritySettings & securitySettings) {
        for (const User & user : securitySettings.users) {
            shell.printfln(" username: %s, password: %s, is_admin: %s", user.username.c_str(), user.password.c_str(), user.admin ? ("yes") : ("no"));
        }
    });
#endif

    shell.println();
}

void System::show_system(uuid::console::Shell & shell) {
    shell.println("System:");
    shell.printfln(" Board profile: %s", board_profile().c_str());
    shell.printfln(" Uptime: %s", uuid::log::format_timestamp_ms(uuid::get_uptime_ms(), 3).c_str());
#ifndef EMSESP_STANDALONE
    shell.printfln(" SDK version: %s", ESP.getSdkVersion());
    shell.printfln(" CPU frequency: %lu MHz", ESP.getCpuFreqMHz());
    shell.printfln(" Free heap: %lu KB", (uint32_t)ESP.getFreeHeap() / 1024);
    shell.printfln(" App used/free: %lu KB / %lu KB", appUsed(), appFree());
    uint32_t FSused = LittleFS.usedBytes() / 1024;
    shell.printfln(" FS used/free: %lu KB / %lu KB", FSused, FStotal() - FSused);
    shell.println();

    shell.println("Network:");
    switch (WiFi.status()) {
    case WL_IDLE_STATUS:
        shell.printfln(" Network: Idle");
        break;

    case WL_NO_SSID_AVAIL:
        shell.printfln(" Network: Network not found");
        break;

    case WL_SCAN_COMPLETED:
        shell.printfln(" Network: Network scan complete");
        break;

    case WL_CONNECTED:
        shell.printfln(" Network: connected");
        shell.printfln(" SSID: %s", WiFi.SSID().c_str());
        shell.printfln(" BSSID: %s", WiFi.BSSIDstr().c_str());
        shell.printfln(" RSSI: %d dBm (%d %%)", WiFi.RSSI(), wifi_quality(WiFi.RSSI()));
        shell.printfln(" MAC address: %s", WiFi.macAddress().c_str());
        shell.printfln(" Hostname: %s", WiFi.getHostname());
        shell.printfln(" IPv4 address: %s/%s", uuid::printable_to_string(WiFi.localIP()).c_str(), uuid::printable_to_string(WiFi.subnetMask()).c_str());
        shell.printfln(" IPv4 gateway: %s", uuid::printable_to_string(WiFi.gatewayIP()).c_str());
        shell.printfln(" IPv4 nameserver: %s", uuid::printable_to_string(WiFi.dnsIP()).c_str());
        if (WiFi.localIPv6().toString() != "0000:0000:0000:0000:0000:0000:0000:0000") {
            shell.printfln(" IPv6 address: %s", uuid::printable_to_string(WiFi.localIPv6()).c_str());
        }
        break;

    case WL_CONNECT_FAILED:
        shell.printfln(" WiFi Network: Connection failed");
        break;

    case WL_CONNECTION_LOST:
        shell.printfln(" WiFi Network: Connection lost");
        break;

    case WL_DISCONNECTED:
        shell.printfln(" WiFi Network: Disconnected");
        break;

    case WL_NO_SHIELD:
    default:
        shell.printfln(" WiFi Network: Unknown");
        break;
    }

    // show Ethernet if connected
    if (ethernet_connected_) {
        shell.println();
        shell.printfln(" Ethernet Network: connected");
        shell.printfln(" MAC address: %s", ETH.macAddress().c_str());
        shell.printfln(" Hostname: %s", ETH.getHostname());
        shell.printfln(" IPv4 address: %s/%s", uuid::printable_to_string(ETH.localIP()).c_str(), uuid::printable_to_string(ETH.subnetMask()).c_str());
        shell.printfln(" IPv4 gateway: %s", uuid::printable_to_string(ETH.gatewayIP()).c_str());
        shell.printfln(" IPv4 nameserver: %s", uuid::printable_to_string(ETH.dnsIP()).c_str());
        if (ETH.localIPv6().toString() != "0000:0000:0000:0000:0000:0000:0000:0000") {
            shell.printfln(" IPv6 address: %s", uuid::printable_to_string(ETH.localIPv6()).c_str());
        }
    }
    shell.println();

    shell.println("Syslog:");
    if (!syslog_enabled_) {
        shell.printfln(" Syslog: disabled");
    } else {
        shell.printfln(" Syslog: %s", syslog_.started() ? "started" : "stopped");
        shell.print(" ");
        shell.printfln(F_(host_fmt), !syslog_host_.isEmpty() ? syslog_host_.c_str() : (F_(unset)));
        shell.printfln(" IP: %s", uuid::printable_to_string(syslog_.ip()).c_str());
        shell.print(" ");
        shell.printfln(F_(port_fmt), syslog_port_);
        shell.print(" ");
        shell.printfln(F_(log_level_fmt), uuid::log::format_level_lowercase(static_cast<uuid::log::Level>(syslog_level_)));
        shell.print(" ");
        shell.printfln(F_(mark_interval_fmt), syslog_mark_interval_);
        shell.printfln(" Queued: %d", syslog_.queued());
    }

#endif
}

// handle upgrades from previous versions
// or managing an uploaded files to replace settings files
// returns true if we need a reboot
bool System::check_upgrade() {
    bool reboot_required = false;

#ifndef EMSESP_STANDALONE
    // see if we have a temp file, if so try and read it
    File new_file = LittleFS.open(TEMP_FILENAME_PATH);
    if (new_file) {
        DynamicJsonDocument  jsonDocument = DynamicJsonDocument(FS_BUFFER_SIZE);
        DeserializationError error        = deserializeJson(jsonDocument, new_file);
        if (error == DeserializationError::Ok && jsonDocument.is<JsonObject>()) {
            JsonObject input = jsonDocument.as<JsonObject>();
            // see what type of file it is, either settings or customization. anything else is ignored
            std::string settings_type = input["type"];
            if (settings_type == "settings") {
                // It's a settings file. Parse each section separately. If it's system related it will require a reboot
                reboot_required = saveSettings(NETWORK_SETTINGS_FILE, "Network", input);
                reboot_required |= saveSettings(AP_SETTINGS_FILE, "AP", input);
                reboot_required |= saveSettings(MQTT_SETTINGS_FILE, "MQTT", input);
                reboot_required |= saveSettings(NTP_SETTINGS_FILE, "NTP", input);
                reboot_required |= saveSettings(SECURITY_SETTINGS_FILE, "Security", input);
                reboot_required |= saveSettings(EMSESP_SETTINGS_FILE, "Settings", input);
            } else if (settings_type == "customizations") {
                // it's a customization file, just replace it and there's no need to reboot
                saveSettings(EMSESP_CUSTOMIZATION_FILE, "Customizations", input);
            } else {
                LOG_ERROR("Unrecognized file uploaded");
            }
        } else {
            LOG_ERROR("Unrecognized file uploaded, not json");
        }

        // close (just in case) and remove the temp file
        new_file.close();
        LittleFS.remove(TEMP_FILENAME_PATH);
    }
#endif

    return reboot_required;
}

// list commands
bool System::command_commands(const char * value, const int8_t id, JsonObject & output) {
    return Command::list(EMSdevice::DeviceType::SYSTEM, output);
}

// convert settings file into json object
void System::extractSettings(const char * filename, const char * section, JsonObject & output) {
#ifndef EMSESP_STANDALONE
    File settingsFile = LittleFS.open(filename);
    if (settingsFile) {
        DynamicJsonDocument  jsonDocument = DynamicJsonDocument(FS_BUFFER_SIZE);
        DeserializationError error        = deserializeJson(jsonDocument, settingsFile);
        if (error == DeserializationError::Ok && jsonDocument.is<JsonObject>()) {
            JsonObject jsonObject = jsonDocument.as<JsonObject>();
            JsonObject node       = output.createNestedObject(section);
            for (JsonPair kvp : jsonObject) {
                node[kvp.key()] = kvp.value();
            }
        }
    }
    settingsFile.close();
#endif
}

// save settings file using input from a json object
bool System::saveSettings(const char * filename, const char * section, JsonObject & input) {
#ifndef EMSESP_STANDALONE
    JsonObject section_json = input[section];
    if (section_json) {
        File section_file = LittleFS.open(filename, "w");
        if (section_file) {
            LOG_INFO("Applying new %s settings", section);
            serializeJson(section_json, section_file);
            section_file.close();
            return true; // reboot required
        }
    }
#endif
    return false; // not found
}

// export status information including the device information
// http://ems-esp/api/system/info
bool System::command_info(const char * value, const int8_t id, JsonObject & output) {
    JsonObject node;

    // System
    node             = output.createNestedObject("System Status");
    node["version"]  = EMSESP_APP_VERSION;
    node["platform"] = EMSESP_PLATFORM;
    node["uptime"]   = uuid::log::format_timestamp_ms(uuid::get_uptime_ms(), 3);
    // node["uptime (seconds)"] = uuid::get_uptime_sec();
#ifndef EMSESP_STANDALONE
    node["freemem"]  = ESP.getFreeHeap() / 1024;  // kilobytes
    node["free_app"] = EMSESP::system_.appFree(); // kilobytes
#endif
    node["reset reason"] = EMSESP::system_.reset_reason(0) + " / " + EMSESP::system_.reset_reason(1);

#ifndef EMSESP_STANDALONE
    // Network Status
    node = output.createNestedObject("Network Status");
    if (WiFi.status() == WL_CONNECTED) {
        node["connection"] = "WiFi";
        node["hostname"]   = WiFi.getHostname();
        // node["SSID"]            = WiFi.SSID();
        // node["BSSID"]           = WiFi.BSSIDstr();
        node["RSSI"] = WiFi.RSSI();
        // node["MAC"]             = WiFi.macAddress();
        node["IPv4 address"]    = uuid::printable_to_string(WiFi.localIP()) + "/" + uuid::printable_to_string(WiFi.subnetMask());
        node["IPv4 gateway"]    = uuid::printable_to_string(WiFi.gatewayIP());
        node["IPv4 nameserver"] = uuid::printable_to_string(WiFi.dnsIP());
        if (WiFi.localIPv6().toString() != "0000:0000:0000:0000:0000:0000:0000:0000") {
            node["IPv6 address"] = uuid::printable_to_string(WiFi.localIPv6());
        }
    } else if (EMSESP::system_.ethernet_connected()) {
        node["connection"]      = "Ethernet";
        node["hostname"]        = ETH.getHostname();
        node["MAC"]             = ETH.macAddress();
        node["IPv4 address"]    = uuid::printable_to_string(ETH.localIP()) + "/" + uuid::printable_to_string(ETH.subnetMask());
        node["IPv4 gateway"]    = uuid::printable_to_string(ETH.gatewayIP());
        node["IPv4 nameserver"] = uuid::printable_to_string(ETH.dnsIP());
        if (ETH.localIPv6().toString() != "0000:0000:0000:0000:0000:0000:0000:0000") {
            node["IPv6 address"] = uuid::printable_to_string(ETH.localIPv6());
        }
        EMSESP::webSettingsService.read([&](WebSettings & settings) {
            node["phy type"]       = settings.phy_type;
            node["eth power"]      = settings.eth_power;
            node["eth phy addr"]   = settings.eth_phy_addr;
            node["eth clock mode"] = settings.eth_clock_mode;
        });
    }
#endif
    EMSESP::esp8266React.getNetworkSettingsService()->read([&](NetworkSettings & settings) {
        node["static ip config"] = settings.staticIPConfig;
        node["enable IPv6"]      = settings.enableIPv6;
        node["low bandwidth"]    = settings.bandwidth20;
        node["disable sleep"]    = settings.nosleep;
    });
#ifndef EMSESP_STANDALONE
    EMSESP::esp8266React.getAPSettingsService()->read([&](APSettings & settings) {
        const char * pM[]         = {"always", "disconnected", "never"};
        node["AP provision mode"] = pM[settings.provisionMode];
        node["AP security"]       = settings.password.length() ? "wpa2" : "open";
        node["AP ssid"]           = settings.ssid;
    });
#endif

    // NTP status
    node = output.createNestedObject("NTP Status");
#ifndef EMSESP_STANDALONE
    node["network time"] = EMSESP::system_.ntp_connected() ? "connected" : "disconnected";
    EMSESP::esp8266React.getNTPSettingsService()->read([&](NTPSettings & settings) {
        node["enabled"]  = settings.enabled;
        node["server"]   = settings.server;
        node["tz label"] = settings.tzLabel;
        // node["tz format"] = settings.tzFormat;
    });

    // OTA status
    node = output.createNestedObject("OTA Status");
    EMSESP::esp8266React.getOTASettingsService()->read([&](OTASettings & settings) {
        node["enabled"] = settings.enabled;
        node["port"]    = settings.port;
    });
#endif

    // MQTT Status
    node                = output.createNestedObject("MQTT Status");
    node["MQTT status"] = Mqtt::connected() ? F_(connected) : F_(disconnected);
    if (Mqtt::enabled()) {
        node["MQTT publishes"]     = Mqtt::publish_count();
        node["MQTT queued"]        = Mqtt::publish_queued();
        node["MQTT publish fails"] = Mqtt::publish_fails();
        node["MQTT connects"]      = Mqtt::connect_count();
    }
    EMSESP::esp8266React.getMqttSettingsService()->read([&](MqttSettings & settings) {
        node["enabled"]                 = settings.enabled;
        node["client_id"]               = settings.clientId;
        node["keep alive"]              = settings.keepAlive;
        node["clean session"]           = settings.cleanSession;
        node["base"]                    = settings.base;
        node["discovery prefix"]        = settings.discovery_prefix;
        node["nested format"]           = settings.nested_format;
        node["ha enabled"]              = settings.ha_enabled;
        node["mqtt qos"]                = settings.mqtt_qos;
        node["mqtt retain"]             = settings.mqtt_retain;
        node["publish time boiler"]     = settings.publish_time_boiler;
        node["publish time thermostat"] = settings.publish_time_thermostat;
        node["publish time solar"]      = settings.publish_time_solar;
        node["publish time mixer"]      = settings.publish_time_mixer;
        node["publish time other"]      = settings.publish_time_other;
        node["publish time sensor"]     = settings.publish_time_sensor;
        node["publish single"]          = settings.publish_single;
        node["publish2command"]         = settings.publish_single2cmd;
        node["send response"]           = settings.send_response;
    });

    // Syslog Status
    node            = output.createNestedObject("Syslog Status");
    node["enabled"] = EMSESP::system_.syslog_enabled_;
#ifndef EMSESP_STANDALONE
    if (EMSESP::system_.syslog_enabled_) {
        node["syslog started"] = syslog_.started();
        node["syslog level"]   = FL_(list_syslog_level)[syslog_.log_level() + 1];
        node["syslog ip"]      = syslog_.ip();
        node["syslog queue"]   = syslog_.queued();
    }
#endif

    // Sensor Status
    node = output.createNestedObject("Sensor Status");
    if (EMSESP::dallas_enabled()) {
        node["temperature sensors"]      = EMSESP::dallassensor_.no_sensors();
        node["temperature sensor reads"] = EMSESP::dallassensor_.reads();
        node["temperature sensor fails"] = EMSESP::dallassensor_.fails();
    }
    if (EMSESP::analog_enabled()) {
        node["analog sensors"]      = EMSESP::analogsensor_.no_sensors();
        node["analog sensor reads"] = EMSESP::analogsensor_.reads();
        node["analog sensor fails"] = EMSESP::analogsensor_.fails();
    }

    // API Status
    node              = output.createNestedObject("API Status");
    node["API calls"] = WebAPIService::api_count();
    node["API fails"] = WebAPIService::api_fails();

    // EMS Bus Status
    node = output.createNestedObject("Bus Status");
    switch (EMSESP::bus_status()) {
    case EMSESP::BUS_STATUS_OFFLINE:
        node["bus status"] = "disconnected";
        break;
    case EMSESP::BUS_STATUS_TX_ERRORS:
        node["bus status"] = "connected, tx issues - try a different Tx Mode";
        break;
    case EMSESP::BUS_STATUS_CONNECTED:
        node["bus status"] = "connected";
        break;
    default:
        node["bus status"] = "unknown";
        break;
    }
    if (EMSESP::bus_status() != EMSESP::BUS_STATUS_OFFLINE) {
        node["bus protocol"]                = EMSbus::is_ht3() ? "HT3" : "Buderus";
        node["bus telegrams received (rx)"] = EMSESP::rxservice_.telegram_count();
        node["bus reads (tx)"]              = EMSESP::txservice_.telegram_read_count();
        node["bus writes (tx)"]             = EMSESP::txservice_.telegram_write_count();
        node["bus incomplete telegrams"]    = EMSESP::rxservice_.telegram_error_count();
        node["bus reads failed"]            = EMSESP::txservice_.telegram_read_fail_count();
        node["bus writes failed"]           = EMSESP::txservice_.telegram_write_fail_count();
        node["bus rx line quality"]         = EMSESP::rxservice_.quality();
        node["bus tx line quality"]         = (EMSESP::txservice_.read_quality() + EMSESP::txservice_.read_quality()) / 2;
    }

    // Settings
    node = output.createNestedObject("Settings");
    EMSESP::webSettingsService.read([&](WebSettings & settings) {
        node["board profile"] = settings.board_profile;
        node["locale"]        = settings.locale;
        node["tx mode"]       = settings.tx_mode;
        node["ems bus id"]    = settings.ems_bus_id;
        node["shower timer"]  = settings.shower_timer;
        node["shower alert"]  = settings.shower_alert;
        if (settings.shower_alert) {
            node["shower alert coldshot"] = settings.shower_alert_coldshot; // seconds
            node["shower alert trigger"]  = settings.shower_alert_trigger;  // minutes
        }
        node["rx gpio"]         = settings.rx_gpio;
        node["tx gpio"]         = settings.tx_gpio;
        node["dallas gpio"]     = settings.dallas_gpio;
        node["pbutton gpio"]    = settings.pbutton_gpio;
        node["led gpio"]        = settings.led_gpio;
        node["hide led"]        = settings.hide_led;
        node["notoken api"]     = settings.notoken_api;
        node["readonly mode"]   = settings.readonly_mode;
        node["fahrenheit"]      = settings.fahrenheit;
        node["dallas parasite"] = settings.dallas_parasite;
        node["bool format"]     = settings.bool_format;
        node["bool dashboard"]  = settings.bool_dashboard;
        node["enum format"]     = settings.enum_format;
        node["analog enabled"]  = settings.analog_enabled;
        node["telnet enabled"]  = settings.telnet_enabled;
    });

    // Devices - show EMS devices
    JsonArray devices = output.createNestedArray("Devices");
    for (const auto & device_class : EMSFactory::device_handlers()) {
        for (const auto & emsdevice : EMSESP::emsdevices) {
            if (emsdevice && (emsdevice->device_type() == device_class.first)) {
                JsonObject obj    = devices.createNestedObject();
                obj["type"]       = emsdevice->device_type_name();
                obj["name"]       = emsdevice->name();
                obj["device id"]  = Helpers::hextoa(emsdevice->device_id());
                obj["product id"] = emsdevice->product_id();
                obj["version"]    = emsdevice->version();
                obj["entities"]   = emsdevice->count_entities();
                char result[300];
                (void)emsdevice->show_telegram_handlers(result, sizeof(result), EMSdevice::Handlers::RECEIVED);
                if (result[0] != '\0') {
                    obj["handlers received"] = result; // don't show handlers if there aren't any
                }
                (void)emsdevice->show_telegram_handlers(result, sizeof(result), EMSdevice::Handlers::FETCHED);
                if (result[0] != '\0') {
                    obj["handlers fetched"] = result;
                }
                (void)emsdevice->show_telegram_handlers(result, sizeof(result), EMSdevice::Handlers::PENDING);
                if (result[0] != '\0') {
                    obj["handlers pending"] = result;
                }
                (void)emsdevice->show_telegram_handlers(result, sizeof(result), EMSdevice::Handlers::IGNORED);
                if (result[0] != '\0') {
                    obj["handlers ignored"] = result;
                }
            }
        }
    }

    return true;
}

#if defined(EMSESP_DEBUG)
// run a test, e.g. http://ems-esp/api?device=system&cmd=test&data=boiler
bool System::command_test(const char * value, const int8_t id) {
    Test::run_test(value, id);
    return true;
}
#endif

// takes a board profile and populates a data array with GPIO configurations
// returns false if profile is unknown
//
// data = led, dallas, rx, tx, button, phy_type, eth_power, eth_phy_addr, eth_clock_mode
//
// clock modes:
//  0 = RMII clock input to GPIO0
//  1 = RMII clock output from GPIO0
//  2 = RMII clock output from GPIO16
//  3 = RMII clock output from GPIO17, for 50hz inverted clock
bool System::load_board_profile(std::vector<int8_t> & data, const std::string & board_profile) {
    if (board_profile == "S32") {
        data = {2, 18, 23, 5, 0, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; // BBQKees Gateway S32
    } else if (board_profile == "E32") {
        data = {2, 4, 5, 17, 33, PHY_type::PHY_TYPE_LAN8720, 16, 1, 0}; // BBQKees Gateway E32
    } else if (board_profile == "MH-ET") {
        data = {2, 18, 23, 5, 0, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; // MH-ET Live D1 Mini
    } else if (board_profile == "NODEMCU") {
        data = {2, 18, 23, 5, 0, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; // NodeMCU 32S
    } else if (board_profile == "LOLIN") {
        data = {2, 18, 17, 16, 0, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; // Lolin D32
    } else if (board_profile == "OLIMEX") {
        data = {0, 0, 36, 4, 34, PHY_type::PHY_TYPE_LAN8720, -1, 0, 0}; // Olimex ESP32-EVB (uses U1TXD/U1RXD/BUTTON, no LED or Dallas)
    } else if (board_profile == "OLIMEXPOE") {
        data = {0, 0, 36, 4, 34, PHY_type::PHY_TYPE_LAN8720, 12, 0, 3}; // Olimex ESP32-POE
    } else if (board_profile == "C3MINI") {
        data = {7, 1, 4, 5, 9, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; // Lolin C3 Mini
    } else if (board_profile == "S2MINI") {
        data = {15, 7, 11, 12, 0, PHY_type::PHY_TYPE_NONE, 0, 0, 0}; //Lolin S2 Mini
    } else if (board_profile == "CUSTOM") {
        // send back current values
        data = {(int8_t)EMSESP::system_.led_gpio_,
                (int8_t)EMSESP::system_.dallas_gpio_,
                (int8_t)EMSESP::system_.rx_gpio_,
                (int8_t)EMSESP::system_.tx_gpio_,
                (int8_t)EMSESP::system_.pbutton_gpio_,
                (int8_t)EMSESP::system_.phy_type_,
                EMSESP::system_.eth_power_,
                (int8_t)EMSESP::system_.eth_phy_addr_,
                (int8_t)EMSESP::system_.eth_clock_mode_};
    } else {
        // unknown, use defaults and return false
        data = {
            EMSESP_DEFAULT_LED_GPIO,
            EMSESP_DEFAULT_DALLAS_GPIO,
            EMSESP_DEFAULT_RX_GPIO,
            EMSESP_DEFAULT_TX_GPIO,
            EMSESP_DEFAULT_PBUTTON_GPIO,
            EMSESP_DEFAULT_PHY_TYPE,
            -1, // power
            0,  // phy_addr,
            0   // clock_mode
        };
        return false;
    }

    return true;
}

// restart command - perform a hard reset by setting flag
bool System::command_restart(const char * value, const int8_t id) {
    restart_requested(true);
    return true;
}

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wswitch"

std::string System::reset_reason(uint8_t cpu) const {
#ifndef EMSESP_STANDALONE
    switch (rtc_get_reset_reason(cpu)) {
    case 1:
        return ("Power on reset");
    // case 2 :reset pin not on esp32
    case 3:
        return ("Software reset");
    case 4: // not on S2, C3
        return ("Legacy watch dog reset");
    case 5:
        return ("Deep sleep reset");
    case 6: // not on S2, C3
        return ("Reset by SDIO");
    case 7:
        return ("Timer group0 watch dog reset");
    case 8:
        return ("Timer group1 watch dog reset");
    case 9:
        return ("RTC watch dog reset");
    case 10:
        return ("Intrusion reset CPU");
    case 11:
        return ("Timer group reset CPU");
    case 12:
        return ("Software reset CPU");
    case 13:
        return ("RTC watch dog reset: CPU");
    case 14: // not on S2, C3
        return ("APP CPU reset by PRO CPU");
    case 15:
        return ("Brownout reset");
    case 16:
        return ("RTC watch dog reset: CPU+RTC");
    default:
        break;
    }
#endif
    return ("Unkonwn");
}
#pragma GCC diagnostic pop

// set NTP status
void System::ntp_connected(bool b) {
    if (b != ntp_connected_) {
        LOG_INFO(b ? "NTP connected" : "NTP disconnected");
    }
    ntp_connected_  = b;
    ntp_last_check_ = b ? uuid::get_uptime_sec() : 0;
}

} // namespace emsesp