//-----------------------------------------------------------------------------
// 2023 Ahoy, https://ahoydtu.de
// Creative Commons - https://creativecommons.org/licenses/by-nc-sa/4.0/deed
//-----------------------------------------------------------------------------

#include <ArduinoJson.h>
#include "app.h"
#include "utils/sun.h"


//-----------------------------------------------------------------------------
app::app() : ah::Scheduler {} {}


//-----------------------------------------------------------------------------
void app::setup() {
    Serial.begin(115200);
    while (!Serial)
        yield();

    resetSystem();

    mSettings.setup();
    mSettings.getPtr(mConfig);
    ah::Scheduler::setup(mConfig->inst.startWithoutTime);
    DPRINT(DBG_INFO, F("Settings valid: "));
    DSERIAL.flush();
    if (mSettings.getValid())
        DBGPRINTLN(F("true"));
    else
        DBGPRINTLN(F("false"));

    if(mConfig->nrf.enabled) {
        mNrfRadio.setup(&mConfig->serial.debug, &mConfig->serial.privacyLog, &mConfig->serial.printWholeTrace, mConfig->nrf.pinIrq, mConfig->nrf.pinCe, mConfig->nrf.pinCs, mConfig->nrf.pinSclk, mConfig->nrf.pinMosi, mConfig->nrf.pinMiso);
    }
    #if defined(ESP32)
    if(mConfig->cmt.enabled) {
        mCmtRadio.setup(&mConfig->serial.debug, &mConfig->serial.privacyLog, &mConfig->serial.printWholeTrace, mConfig->cmt.pinSclk, mConfig->cmt.pinSdio, mConfig->cmt.pinCsb, mConfig->cmt.pinFcsb, false);
    }
    #endif
    #ifdef ETHERNET
        delay(1000);
        DPRINT(DBG_INFO, F("mEth setup..."));
        DSERIAL.flush();
        mEth.setup(mConfig, &mTimestamp, [this](bool gotIp) { this->onNetwork(gotIp); }, [this](bool gotTime) { this->onNtpUpdate(gotTime); });
        DBGPRINTLN(F("done..."));
        DSERIAL.flush();
    #endif // ETHERNET

    #if !defined(ETHERNET)
        mWifi.setup(mConfig, &mTimestamp, std::bind(&app::onNetwork, this, std::placeholders::_1));
        #if !defined(AP_ONLY)
            everySec(std::bind(&ahoywifi::tickWifiLoop, &mWifi), "wifiL");
        #endif
    #endif /* defined(ETHERNET) */

    mCommunication.setup(&mTimestamp, &mConfig->serial.debug, &mConfig->serial.privacyLog, &mConfig->serial.printWholeTrace);
    mCommunication.addPayloadListener(std::bind(&app::payloadEventListener, this, std::placeholders::_1, std::placeholders::_2));
    mSys.setup(&mTimestamp, &mConfig->inst);
    for (uint8_t i = 0; i < MAX_NUM_INVERTERS; i++) {
        initInverter(i);
    }

    if(mConfig->nrf.enabled) {
        if (!mNrfRadio.isChipConnected())
            DPRINTLN(DBG_WARN, F("WARNING! your NRF24 module can't be reached, check the wiring"));
    }

    // when WiFi is in client mode, then enable mqtt broker
    #if !defined(AP_ONLY)
    mMqttEnabled = (mConfig->mqtt.broker[0] > 0);
    if (mMqttEnabled) {
        mMqtt.setup(&mConfig->mqtt, mConfig->sys.deviceName, mVersion, &mSys, &mTimestamp, &mUptime);
        mMqtt.setSubscriptionCb(std::bind(&app::mqttSubRxCb, this, std::placeholders::_1));
        mCommunication.addAlarmListener([this](Inverter<> *iv) { mMqtt.alarmEvent(iv); });
    }
    #endif
    setupLed();

    mWeb.setup(this, &mSys, mConfig);
    mWeb.setProtection(strlen(mConfig->sys.adminPwd) != 0);

    mApi.setup(this, &mSys, mWeb.getWebSrvPtr(), mConfig);

    // Plugins
    #if defined(PLUGIN_DISPLAY)
    if (mConfig->plugin.display.type != 0)
        #if defined(ESP32)
        mDisplay.setup(this, &mConfig->plugin.display, &mSys, &mNrfRadio, &mCmtRadio, &mTimestamp);
        #else
        mDisplay.setup(this, &mConfig->plugin.display, &mSys, &mNrfRadio, NULL, &mTimestamp);
        #endif
    #endif

    mPubSerial.setup(mConfig, &mSys, &mTimestamp);

    #if !defined(ETHERNET)
    //mImprov.setup(this, mConfig->sys.deviceName, mVersion);
    #endif

    regularTickers();
}

//-----------------------------------------------------------------------------
void app::loop(void) {
    ah::Scheduler::loop();

    mNrfRadio.loop();
    #if defined(ESP32)
    mCmtRadio.loop();
    #endif
    mCommunication.loop();

    if (mMqttEnabled && mNetworkConnected)
        mMqtt.loop();
}

//-----------------------------------------------------------------------------
void app::onNetwork(bool gotIp) {
    DPRINTLN(DBG_DEBUG, F("onNetwork"));
    mNetworkConnected = gotIp;
    ah::Scheduler::resetTicker();
    regularTickers(); //reinstall regular tickers
    every(std::bind(&app::tickSend, this), mConfig->nrf.sendInterval, "tSend");
    mMqttReconnect = true;
    mSunrise = 0;  // needs to be set to 0, to reinstall sunrise and ivComm tickers!
    once(std::bind(&app::tickNtpUpdate, this), 2, "ntp2");
    //tickNtpUpdate();
    #if !defined(ETHERNET)
    if (WIFI_AP == WiFi.getMode()) {
        mMqttEnabled = false;
    }
    everySec(std::bind(&ahoywifi::tickWifiLoop, &mWifi), "wifiL");
    #endif /* !defined(ETHERNET) */
}

//-----------------------------------------------------------------------------
void app::regularTickers(void) {
    DPRINTLN(DBG_DEBUG, F("regularTickers"));
    everySec(std::bind(&WebType::tickSecond, &mWeb), "webSc");
    // Plugins
    #if defined(PLUGIN_DISPLAY)
    if (mConfig->plugin.display.type != 0)
        everySec(std::bind(&DisplayType::tickerSecond, &mDisplay), "disp");
    #endif
    every(std::bind(&PubSerialType::tick, &mPubSerial), 5, "uart");
    #if !defined(ETHERNET)
    //everySec([this]() { mImprov.tickSerial(); }, "impro");
    #endif
    // every([this]() { mPayload.simulation();}, 15, "simul");
}

#if defined(ETHERNET)
void app::onNtpUpdate(bool gotTime) {
    uint32_t nxtTrig = 5;  // default: check again in 5 sec
    if (gotTime || mTimestamp != 0) {
        this->updateNtp();
        nxtTrig = gotTime ? 43200 : 60;  // depending on NTP update success check again in 12 h or in 1 min
    }
    once(std::bind(&app::tickNtpUpdate, this), nxtTrig, "ntp");
}
#endif /* defined(ETHERNET) */

//-----------------------------------------------------------------------------
void app::updateNtp(void) {
    if (mMqttReconnect && mMqttEnabled) {
        mMqtt.tickerSecond();
        everySec(std::bind(&PubMqttType::tickerSecond, &mMqtt), "mqttS");
        everyMin(std::bind(&PubMqttType::tickerMinute, &mMqtt), "mqttM");
    }

    // only install schedulers once even if NTP wasn't successful in first loop
    if (mMqttReconnect) {  // @TODO: mMqttReconnect is variable which scope has changed
        if (mConfig->inst.rstValsNotAvail)
            everyMin(std::bind(&app::tickMinute, this), "tMin");

        uint32_t localTime = gTimezone.toLocal(mTimestamp);
        uint32_t midTrig = gTimezone.toUTC(localTime - (localTime % 86400) + 86400);  // next midnight local time
        onceAt(std::bind(&app::tickMidnight, this), midTrig, "midNi");

        if (mConfig->sys.schedReboot) {
            uint32_t localTime = gTimezone.toLocal(mTimestamp);
            uint32_t rebootTrig = gTimezone.toUTC(localTime - (localTime % 86400) + 86410);  // reboot 10 secs after midnght
            if (rebootTrig <= mTimestamp) { //necessary for times other than midnight to prevent reboot loop
               rebootTrig += 86400;
            }
            onceAt(std::bind(&app::tickReboot, this), rebootTrig, "midRe");
        }
    }

    if ((mSunrise == 0) && (mConfig->sun.lat) && (mConfig->sun.lon)) {
        mCalculatedTimezoneOffset = (int8_t)((mConfig->sun.lon >= 0 ? mConfig->sun.lon + 7.5 : mConfig->sun.lon - 7.5) / 15) * 3600;
        tickCalcSunrise();
    }

    mMqttReconnect = false;
}

//-----------------------------------------------------------------------------
void app::tickNtpUpdate(void) {
    uint32_t nxtTrig = 5;  // default: check again in 5 sec
    #if defined(ETHERNET)
    bool isOK = (mTimestamp != 0);
    mEth.updateNtpTime();
    #else
    bool isOK = mWifi.getNtpTime();
    #endif
    if (isOK || mTimestamp != 0) {
        this->updateNtp();

        nxtTrig = isOK ? (mConfig->ntp.interval * 60) : 60;  // depending on NTP update success check again in 12h (depends on setting) or in 1 min

        // immediately start communicating
        if (isOK && mSendFirst) {
            mSendFirst = false;
            once(std::bind(&app::tickSend, this), 1, "senOn");
        }

        mMqttReconnect = false;
    }
    once(std::bind(&app::tickNtpUpdate, this), nxtTrig, "ntp");
}

//-----------------------------------------------------------------------------
void app::tickCalcSunrise(void) {
    if (mSunrise == 0)                                          // on boot/reboot calc sun values for current time
        ah::calculateSunriseSunset(mTimestamp, mCalculatedTimezoneOffset, mConfig->sun.lat, mConfig->sun.lon, &mSunrise, &mSunset);

    if (mTimestamp > (mSunset + mConfig->sun.offsetSec))        // current time is past communication stop, calc sun values for next day
        ah::calculateSunriseSunset(mTimestamp + 86400, mCalculatedTimezoneOffset, mConfig->sun.lat, mConfig->sun.lon, &mSunrise, &mSunset);

    tickIVCommunication();

    uint32_t nxtTrig = mSunset + mConfig->sun.offsetSec + 60;    // set next trigger to communication stop, +60 for safety that it is certain past communication stop
    onceAt(std::bind(&app::tickCalcSunrise, this), nxtTrig, "Sunri");
    if (mMqttEnabled)
        tickSun();
}

//-----------------------------------------------------------------------------
void app::tickIVCommunication(void) {
    bool restartTick = false;
    bool zeroValues = false;
    uint32_t nxtTrig = 0;

    Inverter<> *iv;
    for(uint8_t i = 0; i < MAX_NUM_INVERTERS; i ++) {
        iv = mSys.getInverterByPos(i);
        if(NULL == iv)
            continue;

        iv->commEnabled = !iv->config->disNightCom; // if sun.disNightCom is false, communication is always on
        if (!iv->commEnabled) {  // inverter communication only during the day
            if (mTimestamp < (mSunrise - mConfig->sun.offsetSec)) { // current time is before communication start, set next trigger to communication start
                nxtTrig = mSunrise - mConfig->sun.offsetSec;
            } else {
                if (mTimestamp >= (mSunset + mConfig->sun.offsetSec)) { // current time is past communication stop, nothing to do. Next update will be done at midnight by tickCalcSunrise
                    nxtTrig = 0;
                } else { // current time lies within communication start/stop time, set next trigger to communication stop
                    iv->commEnabled = true;
                    nxtTrig = mSunset + mConfig->sun.offsetSec;
                }
            }
            if (nxtTrig != 0)
                restartTick = true;
        }

        if ((!iv->commEnabled) && (mConfig->inst.rstValsCommStop))
            zeroValues = true;
    }

    if(restartTick) // at least one inverter
        onceAt(std::bind(&app::tickIVCommunication, this), nxtTrig, "ivCom");

    if (zeroValues) // at least one inverter
        once(std::bind(&app::tickZeroValues, this), mConfig->nrf.sendInterval, "tZero");
}

//-----------------------------------------------------------------------------
void app::tickSun(void) {
    // only used and enabled by MQTT (see setup())
    if (!mMqtt.tickerSun(mSunrise, mSunset, mConfig->sun.offsetSec))
        once(std::bind(&app::tickSun, this), 1, "mqSun");  // MQTT not connected, retry
}

//-----------------------------------------------------------------------------
void app::tickZeroValues(void) {
    zeroIvValues(!CHECK_AVAIL, SKIP_YIELD_DAY);
}

//-----------------------------------------------------------------------------
void app::tickMinute(void) {
    // only triggered if 'reset values on no avail is enabled'

    zeroIvValues(CHECK_AVAIL, SKIP_YIELD_DAY);
}

//-----------------------------------------------------------------------------
void app::tickMidnight(void) {
    uint32_t localTime = gTimezone.toLocal(mTimestamp);
    uint32_t nxtTrig = gTimezone.toUTC(localTime - (localTime % 86400) + 86400);  // next midnight local time
    onceAt(std::bind(&app::tickMidnight, this), nxtTrig, "mid2");

    Inverter<> *iv;
    for (uint8_t id = 0; id < mSys.getNumInverters(); id++) {
        iv = mSys.getInverterByPos(id);
        if (NULL == iv)
            continue;  // skip to next inverter

        // reset alarms
        if(InverterStatus::OFF == iv->status)
            iv->resetAlarms();

        // clear max values
        if(mConfig->inst.rstMaxValsMidNight) {
            uint8_t pos;
            record_t<> *rec = iv->getRecordStruct(RealTimeRunData_Debug);
            for(uint8_t i = 0; i <= iv->channels; i++) {
                pos = iv->getPosByChFld(i, FLD_MP, rec);
                iv->setValue(pos, rec, 0.0f);
            }
        }
    }

    if (mConfig->inst.rstYieldMidNight) {
        zeroIvValues(!CHECK_AVAIL, !SKIP_YIELD_DAY);

        if (mMqttEnabled)
            mMqtt.tickerMidnight();
    }
}

//-----------------------------------------------------------------------------
void app::tickSend(void) {
    for (uint8_t i = 0; i < MAX_NUM_INVERTERS; i++) {
        Inverter<> *iv = mSys.getInverterByPos(i);
        if(NULL == iv)
            continue;

        if(iv->config->enabled) {
            if(!iv->commEnabled) {
                DPRINT_IVID(DBG_INFO, iv->id);
                DBGPRINTLN(F("no communication to the inverter (night time)"));
                continue;
            }

            iv->tickSend([this, iv](uint8_t cmd, bool isDevControl) {
                if(isDevControl)
                    mCommunication.addImportant(iv, cmd);
                else
                    mCommunication.add(iv, cmd);
            });
        }
    }

    updateLed();
}

//-----------------------------------------------------------------------------
void app:: zeroIvValues(bool checkAvail, bool skipYieldDay) {
    Inverter<> *iv;
    bool changed = false;
    // set values to zero, except yields
    for (uint8_t id = 0; id < mSys.getNumInverters(); id++) {
        iv = mSys.getInverterByPos(id);
        if (NULL == iv)
            continue;  // skip to next inverter
        if (!iv->config->enabled)
            continue;  // skip to next inverter
        if (iv->commEnabled)
            continue;  // skip to next inverter

        if (checkAvail) {
            if (!iv->isAvailable())
                continue;
        }

        record_t<> *rec = iv->getRecordStruct(RealTimeRunData_Debug);
        for(uint8_t ch = 0; ch <= iv->channels; ch++) {
            uint8_t pos = 0;
            for(uint8_t fld = 0; fld < FLD_EVT; fld++) {
                switch(fld) {
                    case FLD_YD:
                        if(skipYieldDay)
                            continue;
                        else
                            break;
                    case FLD_YT:
                        continue;
                }
                pos = iv->getPosByChFld(ch, fld, rec);
                iv->setValue(pos, rec, 0.0f);
            }
            // zero max power
            if(!skipYieldDay) {
                pos = iv->getPosByChFld(ch, FLD_MP, rec);
                iv->setValue(pos, rec, 0.0f);
            }

            iv->doCalculations();
        }
        changed = true;
    }

    if(changed) {
        if(mMqttEnabled && !skipYieldDay)
            mMqtt.setZeroValuesEnable();
        payloadEventListener(RealTimeRunData_Debug, NULL);
    }
}

//-----------------------------------------------------------------------------
void app::resetSystem(void) {
    snprintf(mVersion, 12, "%d.%d.%d", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH);

#ifdef AP_ONLY
    mTimestamp = 1;
#endif

    mSendFirst = true;

    mSunrise = 0;
    mSunset  = 0;

    mMqttEnabled = false;

    mSendLastIvId = 0;
    mShowRebootRequest = false;
    mSavePending = false;
    mSaveReboot = false;

    mNetworkConnected = false;
}

//-----------------------------------------------------------------------------
void app::mqttSubRxCb(JsonObject obj) {
    mApi.ctrlRequest(obj);
}

//-----------------------------------------------------------------------------
void app::setupLed(void) {
    uint8_t led_off = (mConfig->led.led_high_active) ? LOW : HIGH;

    if (mConfig->led.led0 != DEF_PIN_OFF) {
        pinMode(mConfig->led.led0, OUTPUT);
        digitalWrite(mConfig->led.led0, led_off);
    }
    if (mConfig->led.led1 != DEF_PIN_OFF) {
        pinMode(mConfig->led.led1, OUTPUT);
        digitalWrite(mConfig->led.led1, led_off);
    }
}

//-----------------------------------------------------------------------------
void app::updateLed(void) {
    uint8_t led_off = (mConfig->led.led_high_active) ? LOW : HIGH;
    uint8_t led_on = (mConfig->led.led_high_active) ? HIGH : LOW;

    if (mConfig->led.led0 != DEF_PIN_OFF) {
        Inverter<> *iv;
        for (uint8_t id = 0; id < mSys.getNumInverters(); id++) {
            iv = mSys.getInverterByPos(id);
            if (NULL != iv) {
                if (iv->isProducing()) {
                    // turn on when at least one inverter is producing
                    digitalWrite(mConfig->led.led0, led_on);
                    break;
                }
                else if(iv->config->enabled)
                    digitalWrite(mConfig->led.led0, led_off);
            }
        }
    }

    if (mConfig->led.led1 != DEF_PIN_OFF) {
        if (getMqttIsConnected()) {
            digitalWrite(mConfig->led.led1, led_on);
        } else {
            digitalWrite(mConfig->led.led1, led_off);
        }
    }
}