#pragma

#include "decoder.h"

namespace radio_controller {

class daewoo_decoder : public decoder {

    inline
    bool between(uint16_t smallest, uint16_t biggest, uint16_t value)
    {
        return smallest <= value && value <= biggest;
    }

    template<uint16_t PeriodTime, uint16_t PulseTime>
    bool check_pulse(sample s)
    {
//        printf("between(%d, %d, %d) && between(%d, %d, %d)\n",
//               int(PeriodTime * 0.8), int(PeriodTime * 1.2), s.period_us,
//               int(PulseTime * 0.8), int(PulseTime * 1.2), s.pulse_us);

        return between(uint16_t(PeriodTime * 0.8), uint16_t(PeriodTime * 1.2), s.period_us) &&
               between(uint16_t(PulseTime * 0.8), uint16_t(PulseTime * 1.2), s.pulse_us);
    }

    inline
    bool start_bit(sample s)
    {
        return check_pulse<9000, 4500>(s);
    }

    inline
    bool one_bit(sample s)
    {
        return check_pulse<2250, 560>(s);
    }

    inline
    bool zero_bit(sample s)
    {
        return check_pulse<1125, 560>(s);
    }

    __noinline
    void dump_values(sample_iterator *it) {
        while (it->next()) {
            auto s = it->value();
            auto pct = int(s.pulse_us / double(s.period_us) * 100);
            auto type = start_bit(s) ? "start" : one_bit(s) ? "1" : zero_bit(s) ? "0" : "?";
            printf("% 5d us % 5d us, %s\n", s.period_us, s.pulse_us, type);
        }
    }

public:

    __noinline
    decoding_result decode(sample_iterator *it) override
    {
        printf("Daewoo, size=%d\n", it->size());

        dump_values(it);
        it->reset();

        sample s{};
        bit_string data;

        if (!it->next()) {
            return {decoding_state::TOO_SHORT};
        }
        s = it->value();
        if (!start_bit(s)) {
            return {decoding_state::BAD_START};
        }

        for (int i = 0; i < 32 && it->next(); i++) {
            s = it->value();

            if (one_bit(s)) {
                data.append(true);
            } else if (zero_bit(s)) {
                data.append(false);
            } else {
                return {decoding_state::SHORT_BODY};
            }
        }

        return {decoding_state::OK, data};
    }
};

} // namespace radio_controller