import type { TrackResponse } from '../model/types';

const API_BASE = (import.meta.env.VITE_API_URL || '/snp-api').replace(/\/$/, '');

export async function fetchVesselTrack(
  mmsi: number,
  minutes: number,
  signal?: AbortSignal,
): Promise<TrackResponse> {
  const controller = new AbortController();
  const timeout = setTimeout(() => controller.abort(), 15_000);

  const combinedSignal = signal ?? controller.signal;

  try {
    const url = `${API_BASE}/api/ais-target/${mmsi}/track?minutes=${minutes}`;
    const res = await fetch(url, {
      signal: combinedSignal,
      headers: { accept: 'application/json' },
    });

    if (!res.ok) {
      const text = await res.text().catch(() => '');
      throw new Error(`Track API error ${res.status}: ${text.slice(0, 200)}`);
    }

    const json = (await res.json()) as TrackResponse;
    return json;
  } finally {
    clearTimeout(timeout);
  }
}