#pragma once

#include <cstddef>
#include <cstdint>
#include <string>
#include <vector>

namespace roro::lora {

// What the radio knew about one received packet.
struct RxInfo {
    uint32_t frequencyHz = 0;
    float bandwidthKHz = 0;
    uint8_t spreadingFactor = 0;
    float rssi = 0;        // dBm
    float snr = 0;         // dB
    float noiseFloor = 0;  // dBm, instantaneous RSSI just before the packet, when known
    uint8_t syncWord = 0;
};

// A Capture file (M3, Q97): pcap with LoRaTap v0 headers (LINKTYPE_LORATAP, 270), which Wireshark
// reads. pcap fields are little-endian, LoRaTap fields big-endian.
void appendPcapHeader(std::vector<uint8_t>& out);
void appendRecord(std::vector<uint8_t>& out, uint32_t seconds, uint32_t micros, const RxInfo& rx, const uint8_t* data,
                  size_t len);

// "/captures/lora/YYYYMMDD-HHMMSS.pcap" in UTC, dated like Tracks so Storage Clean-up can age it.
std::string capturePath(int64_t utcSeconds);

constexpr size_t kLoraTapSize = 15;
constexpr size_t kRecordOverhead = 16 + kLoraTapSize;

}  // namespace roro::lora