#include <cstdio>

#include "gps.hpp"

int main()
{
    gps::Reader reader;

    if (!reader.begin()) {
        std::fprintf(stderr, "gps open failed\n"
            "  check /dev/serial0 (UART)\n"
            "  enable serial: sudo raspi-config -> Interfaces -> Serial Port\n"
            "    login shell = No, hardware = Yes\n");
        return 1;
    }
    std::fprintf(stderr, "gps reading /dev/serial0 at 9600...\n");

    char    line[128];
    gps::Fix fix;
    for (;;) {
        if (!reader.readLine(line, sizeof(line))) {
            std::fprintf(stderr, "uart read error\n");
            break;
        }
        if (!gps::Reader::parseRmc(line, fix)) {
            // Not an RMC sentence or no fix — print raw line for debug
            // std::fprintf(stderr, "raw: %s", line);
            continue;
        }
        if (fix.valid) {
            std::fprintf(stderr, "fix  lat=%+.6f  lon=%+.6f  spd=%.1f kn  "
                         "time=%s  date=%s\n",
                         fix.lat, fix.lon, fix.speed_knots,
                         fix.time, fix.date);
        } else {
            std::fprintf(stderr, "no fix\n");
        }
    }
}