import { Channel } from "@tauri-apps/api/core";
import { beforeAll, describe, expect, it } from "vitest";
import { encodeArgs, remoteRouting } from "./remote";

describe("remote invoke", () => {
  beforeAll(() => {
    let next = 1;
    Object.assign(window, { __TAURI_INTERNALS__: { transformCallback: () => next++ } });
  });

  it("replaces channels with ids and keeps the rest", () => {
    const events = new Channel<unknown>();
    const { json, channels } = encodeArgs({ path: "/a", requestId: 3, onEvent: events });
    const parsed = JSON.parse(json) as { path: string; requestId: number; onEvent: { $channel: number } };
    expect(parsed.path).toBe("/a");
    expect(parsed.requestId).toBe(3);
    expect(channels.get(parsed.onEvent.$channel)).toBe(events);
  });

  it("routes served commands, keeps opening / closing local and sets global settings on both sides", () => {
    const served = new Set(["fs_read_dir", "open_project", "close_project", "settings_set"]);
    expect(remoteRouting("fs_read_dir", { path: "/a" }, served)).toBe("remote");
    expect(remoteRouting("window_open_settings", {}, served)).toBe("local");
    expect(remoteRouting("open_project", { path: "/a" }, served)).toBe("local");
    expect(remoteRouting("close_project", {}, served)).toBe("local");
    expect(remoteRouting("settings_set", { scope: "project", key: "k", value: "1" }, served)).toBe("remote");
    expect(remoteRouting("settings_set", { scope: "global", key: "k", value: "1" }, served)).toBe("both");
  });

  it("encodes no arguments as an empty object", () => {
    expect(encodeArgs(undefined).json).toBe("{}");
  });
});