import type { AisTargetSearchResponse } from "../model/types";

export type SearchAisTargetsParams = {
  minutes: number;
  bbox?: string;
};

export async function searchAisTargets(params: SearchAisTargetsParams, signal?: AbortSignal) {
  // Same convention as the "dark" project:
  // - dev: default to Vite proxy base `/snp-api`
  // - prod/other: can be overridden via `VITE_API_URL` (e.g. `http://host:8041/snp-api`)
  const base = (import.meta.env.VITE_API_URL || "/snp-api").replace(/\/$/, "");
  const u = new URL(`${base}/api/ais-target/search`, window.location.origin);
  u.searchParams.set("minutes", String(params.minutes));
  if (params.bbox) u.searchParams.set("bbox", params.bbox);

  const res = await fetch(u, { signal, headers: { accept: "application/json" } });
  const txt = await res.text();
  let json: unknown = null;
  try {
    json = JSON.parse(txt);
  } catch {
    // ignore
  }
  if (!res.ok) {
    const msg =
      json && typeof json === "object" && typeof (json as { message?: unknown }).message === "string"
        ? (json as { message: string }).message
        : txt.slice(0, 200) || res.statusText;
    throw new Error(`AIS target API failed: ${res.status} ${msg}`);
  }

  if (!json || typeof json !== "object") throw new Error("AIS target API returned invalid payload");
  const parsed = json as AisTargetSearchResponse;
  if (!parsed.success) throw new Error(parsed.message || "AIS target API returned success=false");

  return parsed;
}