Mode.h

#pragma once

#include <Arduino.h>
#include <stdint.h>
#include "MutilaDebug.h"
#include "Millis.h"

class Mode {
public:
    enum RunState {
        NotStarted,
        Started,
        Running,
        Finished,
        Stopped
    };

public:
    Mode() : _state(NotStarted), _lastUpdateMs(0), _updatePeriodMs(0) {;}

    virtual void begin() {;}

    virtual bool isFinished() { return _state == Finished; }

    void start() { _state = Started; _lastUpdateMs = 0; modeStart(); }

    void stop() { modeStop(); _state = Stopped; }

    virtual void update() { 
        uint32_t now = Millis();
        if (MillisSince(_lastUpdateMs, now) > _updatePeriodMs || _state == Started) {
            modeUpdate();
            _lastUpdateMs = now;
            if (_state == Started) {
                _state = Running;
            }
        }
    }

    void setUpdatePeriod(uint16_t periodMs) { _updatePeriodMs = periodMs; }

protected:
    virtual void modeStart() {;}

    virtual void modeStop() {;}

    virtual void modeUpdate() = 0;

protected:
    RunState _state;
    uint32_t _lastUpdateMs;
    uint16_t _updatePeriodMs;

};