#pragma once
#include <array>
#include <cstdint>
#include <string>
#include <vector>

namespace cms {
inline constexpr unsigned canReceiveChannel=0;
inline constexpr unsigned canTransmitChannel=1;
inline constexpr unsigned canHardwareChannelCount=2;
inline constexpr unsigned liveCanChannelCount=1; // Only CH0 contributes live receive data.
struct CanConfig {
    bool enabled{true};
    int device_index{0};
    int timeout_ms{1000};
    bool termination{true};
};
struct CanDoorSignals {
    // Raw unsigned bytes: left front, right front, left rear, right rear.
    // No scale/unit is specified in the reference protocol.
    std::array<int,4> positions{{-1,-1,-1,-1}};
    bool valid{},fd{},extended{};
    std::uint64_t received{},received_monotonic_ns{};
    std::uint32_t device_timestamp_us{};
    double age_ms{-1};
};
struct CanSnapshot {
    std::string source{"live"},status{"DISABLED"};
    // Keep two slots for existing recorded sessions; live CH1 stays unset.
    std::array<CanDoorSignals,2> channels;
    std::uint64_t received{},transmitted{},transmit_errors{},receive_errors{};
};
struct CanFrame {
    int channel{};
    std::uint32_t id{};
    bool fd{},extended{},bitrate_switch{};
    std::vector<std::uint8_t> data;
};
}