import { test } from "node:test";
import assert from "node:assert/strict";
import { existsSync, mkdtempSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { run } from "./helpers.mjs";
import { parseArgs } from "../play-spellgrid.mjs";

test("play_spellgrid_parses_args", () => {
  assert.deepEqual(parseArgs(["rust"]), { lang: "rust", level: "l1", dir: null, stageOnly: false });
  assert.deepEqual(parseArgs(["ts", "l2", "--dir", "x", "--stage-only"]), { lang: "ts", level: "l2", dir: "x", stageOnly: true });
});

test("play_spellgrid_stages_reference_cards_and_levels", () => {
  // Uses the real course: the Module 10 Rust reference with every card it reads and the levels.
  const dir = join(mkdtempSync(join(tmpdir(), "sdc-play-")), "ws");
  const r = run("play-spellgrid.mjs", ["rust", "l3", "--dir", dir, "--stage-only"]);
  assert.equal(r.code, 0, r.out);
  for (const f of ["Cargo.toml", "src/cli.rs", "cards/whirlwind.json", "cards/powder-keg.json", "levels/l1-double-tap.json"]) {
    assert.ok(existsSync(join(dir, f)), f);
  }
  assert.match(r.out, /cargo run --quiet --bin spellgrid -- levels\/l3-simultaneous-paradox\.json/);
  // Re-staging the same directory is allowed.
  assert.equal(run("play-spellgrid.mjs", ["rust", "--dir", dir, "--stage-only"]).code, 0);
});

test("play_spellgrid_refuses_unknown_level_and_foreign_dir", () => {
  const foreign = mkdtempSync(join(tmpdir(), "sdc-play-"));
  writeFileSync(join(foreign, "mine.txt"), "keep me");
  const r = run("play-spellgrid.mjs", ["rust", "--dir", foreign, "--stage-only"]);
  assert.equal(r.code, 1);
  assert.match(r.out, /not empty/);
  const bad = run("play-spellgrid.mjs", ["rust", "l9", "--dir", join(foreign, "ws"), "--stage-only"]);
  assert.equal(bad.code, 1);
  assert.match(bad.out, /no level "l9"\. Levels: l1-double-tap, l2-spliced-corpse, l3-simultaneous-paradox/);
  assert.equal(run("play-spellgrid.mjs", ["java"]).code, 1);
});