import { test } from "node:test";
import assert from "node:assert/strict";
import { existsSync, readFileSync } from "node:fs";
import { join } from "node:path";
import { toolsDir } from "./helpers.mjs";
import { parseArgs } from "../solve-spellgrid.mjs";

test("solve_spellgrid_parses_args", () => {
  assert.deepEqual(parseArgs([]), { level: "l1", dir: null, solver: [] });
  assert.deepEqual(parseArgs(["l3", "--naive", "--max", "9", "--dir", "x", "--never-rule", "A IS B", "--all"]), {
    level: "l3",
    dir: "x",
    solver: ["--naive", "--max", "9", "--never-rule", "A IS B", "--all"],
  });
});

test("solve_spellgrid_solver_uses_only_the_harness", () => {
  // The solver is copied into a staged reference: it may import the harness and nothing else of the engine.
  const path = join(toolsDir, "solver", "solve.ts");
  assert.ok(existsSync(path));
  const imports = [...readFileSync(path, "utf8").matchAll(/from "([^"]+)"/g)].map((m) => m[1]);
  assert.deepEqual(imports.sort(), ["./src/harness", "node:fs"]);
});