import { test, expect, describe } from "bun:test";

import committed from "../../generated/block-meta.json";
import packageJson from "../../package.json";
import { dumpBlockMeta } from "../../src/level-blocks/meta.ts";
import { standardRegistry } from "../../src/level-blocks/standard.ts";

describe("generated/block-meta.json", () => {
  test("matches a fresh dump of the standard registry", () => {
    // JSON.parse(JSON.stringify(...)) drops `undefined`-valued keys and the
    // readonly-ness the in-memory dump carries, matching the on-disk shape.
    const fresh = JSON.parse(
      JSON.stringify(dumpBlockMeta(standardRegistry())),
    ) as typeof committed;
    expect(committed).toEqual(fresh);
    // If this fails, the registry (a block schema/shadow or the composition
    // grammar) changed: re-run `bun run scripts/generate-block-meta.ts` and
    // commit generated/block-meta.json.
  });

  test("is stamped with the current levelset version and format 1", () => {
    const fresh = dumpBlockMeta(standardRegistry());
    expect((committed as { levelsetVersion: string }).levelsetVersion).toBe(
      fresh.levelsetVersion,
    );
    expect((committed as { formatVersion: number }).formatVersion).toBe(1);
  });

  test("has a stable public JSON subpath in source and published exports", () => {
    expect(packageJson.exports["./block-meta.json"]).toBe(
      "./generated/block-meta.json",
    );
    expect(packageJson.publishConfig.exports["./block-meta.json"]).toBe(
      "./generated/block-meta.json",
    );
    expect(packageJson.files).toContain("generated");
  });
});