import { expect, test } from "bun:test";
import { mkdirSync, mkdtempSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { checkReachability } from "../src/reachability.ts";

test("reports convention modules and workers that cannot be reached", () => {
  const root = mkdtempSync(join(tmpdir(), "wrn-reach-"));
  mkdirSync(join(root, "app", "middleware"), { recursive: true });
  mkdirSync(join(root, "app", "queues"), { recursive: true });
  writeFileSync(join(root, "app", "middleware", "audit.ts"), "export const audit = () => {};\n");
  writeFileSync(
    join(root, "app", "queues", "mail.ts"),
    "export const mail = defineQueue({}); export const worker = defineWorker({});\n",
  );

  expect(
    checkReachability(root)
      .map((issue) => issue.code)
      .sort(),
  ).toEqual(["WRN-REACH-MIDDLEWARE", "WRN-REACH-QUEUE", "WRN-REACH-WORKER"]);
});

test("accepts discovered middleware and queues", () => {
  const root = mkdtempSync(join(tmpdir(), "wrn-reach-"));
  mkdirSync(join(root, "app", "middleware"), { recursive: true });
  mkdirSync(join(root, "app", "queues"), { recursive: true });
  writeFileSync(join(root, "app", "middleware", "audit.ts"), "export default () => {};\n");
  writeFileSync(join(root, "app", "queues", "mail.ts"), "export default defineQueue({});\n");
  expect(checkReachability(root)).toEqual([]);
});