import { expect } from "@std/expect";
import { generateKeys } from "./keys.ts";
import { encryptText } from "./encrypt.ts";
import { decryptText } from "./decrypt.ts";
import { sha3_512 } from "@noble/hashes/sha3.js";

Deno.test({
  name: "decrypts an encrypted value",
  fn() {
    const keys = generateKeys();
    const text = "Hello, world!";
    const encrypted = encryptText(keys.publicKey, text);
    const decrypted = decryptText(keys.secretKey, encrypted);

    expect(decrypted).toEqual(text);
  },
});

Deno.test({
  name: "errors when provided an incorrect hash",
  fn() {
    const keys = generateKeys();
    const text = "Hello, world!";
    const encrypted = encryptText(keys.publicKey, text);

    encrypted.hash = sha3_512(new Uint8Array(24)).toBase64();

    expect(() => decryptText(keys.secretKey, encrypted)).toThrow();
  },
});

Deno.test({
  name: "errors when provided an incorrect content length",
  fn() {
    const keys = generateKeys();
    const text = "Hello, world!";
    const encrypted = encryptText(keys.publicKey, text);

    encrypted.length = Math.round(Math.random() * 1000);

    expect(() => decryptText(keys.secretKey, encrypted)).toThrow();
  },
});