import { test } from "node:test";
import assert from "node:assert/strict";
import { writeFileSync } from "node:fs";
import { join } from "node:path";
import { run, copyFixture, git } from "./helpers.mjs";

function repo() {
  const ws = copyFixture("ws-content-only");
  git(ws, "init", "-q");
  git(ws, "add", "-A");
  git(ws, "commit", "-qm", "base");
  git(ws, "tag", "base");
  return ws;
}

test("expansion_check_rejects_engine_edit", () => {
  const ws = repo();
  writeFileSync(join(ws, "src/engine/core.rs"), "fn changed() {}\n");
  const r = run("expansion-check.mjs", [ws, "base"]);
  assert.equal(r.code, 1);
  assert.match(r.out, /src\/engine\/core\.rs/);
});

test("expansion_check_rejects_new_engine_file", () => {
  const ws = repo();
  writeFileSync(join(ws, "src/engine/new.rs"), "fn n() {}\n");
  assert.equal(run("expansion-check.mjs", [ws, "base"]).code, 1);
});

test("expansion_check_accepts_content_only", () => {
  const ws = repo();
  writeFileSync(join(ws, "src/content/cards.rs"), "// new card\n");
  writeFileSync(join(ws, "src/content/more.rs"), "// untracked\n");
  const r = run("expansion-check.mjs", [ws, "base"]);
  assert.equal(r.code, 0, r.out);
});