import { describe, expect, it } from "vitest";
import {
  decodeBase32,
  decodeBase58,
  decodeInput,
  encodeBase32,
  encodeBase58,
  formatHexRows,
} from "../../src/core/encoding";

describe("binary encodings", () => {
  it("round-trips RFC 4648 Base32", () => {
    const bytes = new TextEncoder().encode("foobar");
    expect(encodeBase32(bytes)).toBe("MZXW6YTBOI======");
    expect(new TextDecoder().decode(decodeBase32("MZXW6YTBOI======"))).toBe(
      "foobar",
    );
  });

  it("round-trips Base58 including leading zeros", () => {
    const bytes = Uint8Array.of(0, 0, 1, 2, 255);
    expect(decodeBase58(encodeBase58(bytes))).toEqual(bytes);
  });

  it("rejects malformed hex", () => {
    expect(() => decodeInput("abc", "hex")).toThrow(/byte pairs/u);
  });

  it("retains absolute offsets for paged byte inspection", () => {
    expect(formatHexRows(Uint8Array.of(1, 2, 3), 4_096)[0]?.offset).toBe(4_096);
  });
});