import { data } from "react-router";
import type { Route } from "./+types/api.sessions";
import { createSession, listSessions } from "~/lib/sessions";
import { parseGpxAsync } from "@trails-cool/gpx";

export async function action({ request }: Route.ActionArgs) {
  if (request.method !== "POST") {
    return data({ error: "Method not allowed" }, { status: 405 });
  }

  const body = await request.json();
  const { callbackUrl, callbackToken, gpx } = body as {
    callbackUrl?: string;
    callbackToken?: string;
    gpx?: string;
  };

  const session = await createSession({ callbackUrl, callbackToken });

  let initialWaypoints: Array<{ lat: number; lon: number; name?: string }> | undefined;
  if (gpx) {
    try {
      const gpxData = await parseGpxAsync(gpx);
      initialWaypoints = gpxData.waypoints;
    } catch (_e) {
      // Continue with empty session if GPX is invalid
    }
  }

  return data(
    {
      sessionId: session.id,
      url: `/session/${session.id}`,
      initialWaypoints,
    },
    { status: 201 },
  );
}

export async function loader(_args: Route.LoaderArgs) {
  const sessions = await listSessions();
  return data({ sessions });
}