import { describe, expect, it } from "vitest";
import type { RouteResult } from "@watermaps/shared";
import { createRouteGpx } from "../src/lib/gpx";

describe("GPX export", () => {
  it("creates parseable GPX 1.1 route and track metadata", () => {
    const gpx = createRouteGpx(routeFixture, {
      name: "Emden & Hamm <Test>",
      createdAt: "2026-07-19T12:00:00.000Z"
    });
    const document = new DOMParser().parseFromString(gpx, "application/xml");
    const root = document.documentElement;

    expect(document.querySelector("parsererror")).toBeNull();
    expect(root.localName).toBe("gpx");
    expect(root.getAttribute("version")).toBe("1.1");
    expect(root.namespaceURI).toBe("http://www.topografix.com/GPX/1/1");
    expect(document.getElementsByTagNameNS(root.namespaceURI, "metadata")).toHaveLength(1);
    expect(document.getElementsByTagNameNS(root.namespaceURI, "rte")).toHaveLength(1);
    expect(document.getElementsByTagNameNS(root.namespaceURI, "trk")).toHaveLength(1);
    expect(document.getElementsByTagNameNS(root.namespaceURI, "rtept")).toHaveLength(3);
    expect(document.getElementsByTagNameNS(root.namespaceURI, "trkpt")).toHaveLength(3);
    expect(document.getElementsByTagNameNS(root.namespaceURI, "time")[0]?.textContent).toBe("2026-07-19T12:00:00.000Z");
    expect(gpx).toContain("Emden &amp; Hamm &lt;Test&gt;");
    expect(gpx).toContain("minlat=\"51.6814536\"");
  });

  it("rejects invalid or incomplete geometry", () => {
    expect(() => createRouteGpx({
      ...routeFixture,
      geometry: { type: "LineString", coordinates: [[7, 53]] }
    })).toThrow(/nicht genügend Punkte/);
    expect(() => createRouteGpx({
      ...routeFixture,
      geometry: { type: "LineString", coordinates: [[7, 53], [181, 52]] }
    })).toThrow(/ungültige Koordinaten/);
  });
});

const routeFixture: RouteResult = {
  id: "emden-hamm",
  name: "Emden – Hamm",
  geometry: {
    type: "LineString",
    coordinates: [[7.186111, 53.344167], [7.1, 52.4], [7.8042615, 51.6814536]]
  },
  distanceNm: 153.69,
  eta: null,
  warnings: [{ code: "NOT_OFFICIAL", severity: "caution", message: "Nicht amtlich & vor Ort prüfen" }],
  minKnownDepthM: null,
  unknownDepthRatio: 1,
  dataSources: ["OpenStreetMap <curated>"],
  routingMode: "fairway"
};