Buttons.h

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#pragma once

#include <vector>

#include "mbed.h"

namespace nxpcup {

using ButtonId = int;

class Buttons {
public:
    struct Config {
        struct ButtonSetting {
            uint16_t id; 
            uint16_t boundaryValue; 
        };

        PinName analogPin; 
        std::vector<ButtonSetting> buttonSettings; 
    };

    Buttons(const Config& config)
        : m_config(config)
        , m_analogIn(config.analogPin){};

    ButtonId getPressed() { return decode(); }

    ButtonId getPressed(ButtonId& buttonId)
    {
        return (buttonId = decode());
    }

    bool isPressed(ButtonId buttonId)
    {
        return decode() == buttonId;
    }

    void waitForPress(ButtonId buttonId)
    {
        while (!isPressed(buttonId)) {
            wait(0.1);
        }
    }

private:
    ButtonId decode()
    {
        int analogValue = m_analogIn.read_u16();
        for (const auto& button : m_config.buttonSettings) {
            if (analogValue < button.boundaryValue) {
                return button.id;
            }
        }
        return -1;
    }

    const Config& m_config;
    AnalogIn m_analogIn;
};

} // namespace nxpcup