#include <QTime>
#include <QtMath>
#include <QRandomGenerator>

#include "StateController.h"
#include "ApplicationController.h"
#include "types.h"

StateController::StateController(QObject *parent) : QObject(parent) {}

void StateController::init()
{
    startTimer(QOBJECT_TIMER_TIMEOUT_MS);
    connect(&_ApplicationController, SIGNAL(didUnhandledMsgAppController(const QVariantList &)),
            this                   ,   SLOT(doStateControllerUnhandledMsgReceived(const QVariantList &)));

    _dryDemo.connectToState("Idle"             , this, &StateController::onIdleStateChange               );
    //_dryDemo.connectToState("Tx_Params"        , this, &StateController::onTreatmentParamsStateChange    );
    //_dryDemo.connectToState("Water_Sample"     , this, &StateController::onWaterSampleStateChange        );
    //_dryDemo.connectToState("Consumables"      , this, &StateController::onConsumablesStateChange        );
    //_dryDemo.connectToState("Disposables"      , this, &StateController::onDisposablesStateChange        );
    //_dryDemo.connectToState("System_Prime"     , this, &StateController::onSystemPrimeStateChange        );
    //_dryDemo.connectToState("BP_HR"            , this, &StateController::onBPHRStateChange               );
    //_dryDemo.connectToState("Ultrafiltraion"   , this, &StateController::onUltrafiltrationStateChange    );
    //_dryDemo.connectToState("Connection"       , this, &StateController::onConnectionStateChange         );

    //_dryDemo.connectToState("Start_Tx"         , this, &StateController::onStartTreatmentStateChange     );
    //_dryDemo.connectToState("Blood_Prime"      , this, &StateController::onTreatmentBloodPrimeStateChange);
    //_dryDemo.connectToState("Treatment"        , this, &StateController::onTreatmentTreatmentStateChange );

    //_dryDemo.connectToState("End_Tx"           , this, &StateController::onEndTreatmentStateChange       );
    //_dryDemo.connectToState("Post_Tx"          , this, &StateController::onPostTreatmentStateChange      );
    //_dryDemo.connectToState("Disinfect"        , this, &StateController::onDisinfectStateChange          );
}

void StateController::quit()
{
    // TODo fill up
}

void StateController::doStateControllerUnhandledMsgReceived(const QVariantList &msg)
{
    MessageID receivedMsgID = static_cast<Can::MessageID>(msg[0].toUInt());

    switch(receivedMsgID)
    {
        //case ID_UI_RQST_TX:
        //case ID_UI_TX_PARAMS_RQST:
        //case ID_UI_CONFIRM_RESP:
        //case ID_UI_RINSEBACK_CMD_RQST:
        //case ID_SAMPLE_WATER_RESULT:
        //case ID_UI_SET_UF_VOLUME_RQST:
        //case ID_USER_TX_TIME_CHANGES_RQST:
        //case ID_UI_CONFIRM_TX_PARAMS:
        //case ID_UI_SALINE_BOLUS_RQST:
        //case ID_UI_PRESSURE_LIMITS_CHANGE_RQST:
        //case ID_UI_ALARM_USER_ACTION_RQST:
        //case ID_USER_BLOOD_DIAL_RATE_CHANGE_RQST:
        //case ID_UI_HEPARIN_PAUSE_RESUME_RQST:
        //    _treatmentRcvdMessages[receivedMsgID] = msg[1];
        //    break;

        //// These messages do not have a payload in from UI so a fake payload is added to be consumed
        //// and processed
        //case ID_UI_TREATMENT_LOG_RQST:
        //case ID_UI_POST_TREATMNET_NEXT_RQST:
        //case ID_UI_DISPOSABLE_REMOVAL_CONFIRM_RQST:
        //    _treatmentRcvdMessages[receivedMsgID] = 0;
        //    break;

        //case ID_UI_TX_END_RQST:
        //case ID_UI_CONSUMABLES_INSTALL:
        //case ID_UI_INTALLATION_CONFIRM:
        //case ID_UI_PATIENT_CONNECTION_RQST:
        //case ID_UI_PATIENT_CONNECTION_CONF_RQST:
        //case ID_UI_START_TX_RQST:
        //case ID_UI_SERVICE_MODE_RQST:
        //    _hasUserConfirmedToProceed = true;
        //    break;

        case ID_NONE:
        //case ID_HD_ALARM_STATUS_BC:
        //case ID_HD_BLOOD_FLOW_DATA_BC:
        //case ID_HD_DIALYSATE_FLOW_DATA_BC:
        //case ID_PRESSURE_OCCLUSION_DATA_BC:
        //case ID_DIALYSATE_OUT_FLOW_DATA_BC:
        //case ID_TX_TIME_BC:
        //case ID_HD_TX_PARAMS_RANGES_DATA:
        //case ID_HD_TX_STATES_BC:
        case ID_TD_OP_MODE_DATA:
        //case ID_FILTER_FLUSH_TIME_BC:
        //case ID_HD_UI_CONFIRM_RQST:
        //case ID_PRE_TX_STATES_BC:
        //case ID_HD_NEW_PARAMS_RESP:
        //case ID_HD_SYS_SELF_TEST_TIME_BC:
        //case ID_HD_DRY_SELF_TEST_TIME_BC:
        //case ID_HD_PRIMING_TIME_BC:
        //case ID_HD_SET_UF_VOLUME_RESP:
        //case ID_HD_PATINET_CONNECTION_CONF_RESP:
        //case ID_USER_TX_TIME_CHANGES_RESP:
        //case ID_HD_BLOOD_PRIME_BC:
        //case ID_HD_RINSEBACK_CMD_RESP:
        //case ID_HD_RINSEBACK_DATA_BC:
        //case ID_HD_SALINE_BOLUS_BC:
        //case ID_HD_PRESSURE_LIMITS_CHANGE_RESP:
        //case ID_USER_BLOOD_DIAL_RATE_CHANGE_RESP:
        //case ID_HD_TREATMENT_LOG_RESP:
        //case ID_HD_POST_TREATMENT_NEXT_CMD_RESP:
        //case ID_UI_DISPOSABLE_REMOVAL_CONFIRM_RESP:
        //case ID_HD_HEPARIN_VOLUME_BC:
        //case ID_HD_HEPARIN_PAUSE_RESUME_RESP:
            // Do nothing
            break;
    }
}

void StateController::timerEvent(QTimerEvent *)
{
    if (!_dryDemo.isRunning()) {
            _dryDemo.start();
    }

    _dryDemo.submitEvent("TimeoutEvent");

    if (_isBroadcastListReady) {
            sendMessages(true);
    }

    if (_isSendListReady) {
            sendMessages(false);
    }
}

// ---------------------- Private methods ------------------ //
void StateController::sendMessages(bool isBroadcast)
{
    QList msgList = _broadcastMessages;

    if (isBroadcast) {
        _broadcastMessages.clear();
    }
    else
    {
        msgList = _sendMessages;
        _sendMessages.clear();
    }

    for (auto item: msgList) {
        emit _ApplicationController.didActionTransmit(item);
    }
}

// ----------- State transition methods ---------------- //
void StateController::onIdleStateChange(bool active)
{
    static State_Status status = STATE_ON_ENTRY;

    auto inEntry = [=](){

        // Send the pre treatment states to reset so it starts from the right state
        //QList<quint32> preTxStates({0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});
        //prepareStatesBroadcastData(ID_PRE_TX_STATES_BC, preTxStates);

        //// Send the treatment params in Idle too. This is to make sure if the user
        //// jumped to the Ultrafiltration page the min and max UF volumes are set prior to it.
        //QVariant emptyVar;
        //setTreatmentParams(false, emptyVar);
        //prepareTreatmentParamsRangesBroadcastData(true); // In standby reset the treatment values

        prepareTDOpModeTransitionData(MODE_STAN, 0);

        //// Send message 0xBA in case the dry demo menu stayed open to be closed upon transitioning to standby
        //prepareMsgBA(MODE_STAN, CONFIRM_CMD_ACCEPT_CLOSE);

        //_transitionEventsFromIdle.clear();
        //_transitionEventsFromIdle[CMD_TX_PARAMS      ] = "Transition_2_Tx_Parms";
        //_transitionEventsFromIdle[CMD_WATER_SAMPLE   ] = "Transition_2_Water_Sample";
        //_transitionEventsFromIdle[CMD_CONSUMABLES    ] = "Transition_2_Consumables";
        //_transitionEventsFromIdle[CMD_DISPOSABLES    ] = "Transition_2_Disposables";
        //_transitionEventsFromIdle[CMD_SYSTEM_PRIME   ] = "Transition_2_Sys_Prime";
        //_transitionEventsFromIdle[CMD_BP_HR          ] = "Transition_2_BP_HR";
        //_transitionEventsFromIdle[CMD_ULTRAFILTRATION] = "Transition_2_Ultrafiltraion";
        //_transitionEventsFromIdle[CMD_CONNECTION     ] = "Transition_2_Patient_Connection";
        //_transitionEventsFromIdle[CMD_START_TX       ] = "Transition_2_Start_Tx";
        //_transitionEventsFromIdle[CMD_END_TX         ] = "Transition_2_End_Tx";
        //_transitionEventsFromIdle[CMD_DISINFECTION   ] = "Transition_2_Disinfect";

        status = STATE_ON_ACTION;

        qDebug() << "Idle on entry";
    };

    auto inAction = [=](){
                status           = STATE_ON_ACTION;
    };

    auto inExit = [=](){
        qDebug() << "Idle in exit";
        status                     = STATE_ON_ENTRY;
    };

    switch (status) {  // TODO macro it later
    case STATE_ON_ENTRY :   if (active) inEntry ();  break;
    case STATE_ON_ACTION:   if (active) inAction();  break;
    case STATE_ON_EXIT  :   if (active) inExit  ();  break;
    }
}


void StateController::prepareTDOpModeTransitionData(Can::TD_OP_MODE mode, quint32 subMode)
{
    QVariantList msg;
    msg.append(static_cast<quint16>(ID_TD_OP_MODE_DATA));
    msg.append(Can_Id::eChlid_TD_Sync);
    msg.append(mode);
    msg.append(subMode);
    _isBroadcastListReady = false;
    _broadcastMessages.append(msg);
    _isBroadcastListReady = true;
}