/**
 * Author: Simon-Pierre Boucher
 * Contact: contact@spboucher.ai
 * Project: Groupe Ka / Ka Maps
 */

import { describe, expect, it } from "vitest";
import { cameraFromParams, cameraToParams } from "../src/utils/url.js";

describe("camera URL state", () => {
  it("round-trips lat/lng/zoom", () => {
    const params = cameraToParams({ lat: 46.8139, lng: -71.208, zoom: 13 });
    expect(params.get("lat")).toBe("46.81390");
    expect(params.get("lng")).toBe("-71.20800");
    expect(params.get("zoom")).toBe("13");
    expect(cameraFromParams(params)).toEqual({ lat: 46.8139, lng: -71.208, zoom: 13 });
  });

  it("preserves unrelated params", () => {
    const base = new URLSearchParams("city=Québec&view=carte");
    const params = cameraToParams({ lat: 46.8, lng: -71.2, zoom: 12.25 }, base);
    expect(params.get("city")).toBe("Québec");
    expect(params.get("zoom")).toBe("12.25");
  });

  it("returns null on malformed or missing values", () => {
    expect(cameraFromParams(new URLSearchParams(""))).toBeNull();
    expect(cameraFromParams(new URLSearchParams("lat=x&lng=1&zoom=2"))).toBeNull();
    expect(cameraFromParams(new URLSearchParams("lat=99&lng=1&zoom=2"))).toBeNull();
  });

  it("clamps zoom into [0,22]", () => {
    expect(
      cameraFromParams(new URLSearchParams("lat=46&lng=-71&zoom=40"))?.zoom,
    ).toBe(22);
  });
});