using NUnit.Framework;
using System.Security.Cryptography;

namespace System;

[TestFixture]
public class ByteArrayTest
{
    [Test]
    public void ByteArray()
    {
        var values = new byte[] { 0xff };
        var sbytes = values.ToSByteArray();
        var bytes = sbytes.ToByteArray();
        Assert.IsTrue(bytes[0] == values[0]);
    }

    static CipherMode CFB => OperatingSystem2.IsAndroid() ? CipherMode.CBC : CipherMode.CFB;

    [Test]
    public void MultipleEncrypt()
    {
        var aes_cbc_1 = AESUtils.Create();
        var aes_cfb_1 = AESUtils.Create(mode: CFB);
        var aes_cbc_2 = AESUtils.Create();

        var value = DateTime.Now.ToString() + " 🔮🎮";

        var bytes_1 = AESUtils.EncryptToByteArray(aes_cbc_1, value);
        var bytes_2 = AESUtils.Encrypt(aes_cfb_1, bytes_1);
        var bytes_3 = AESUtils.Encrypt(aes_cbc_2, bytes_2);
        var bytes_4 = bytes_3;

        var d_bytes_4 = bytes_4;

#pragma warning disable CA1416 // 验证平台兼容性
#if !ANDROID && !__ANDROID__ && !__MOBILE__
        if (OperatingSystem2.IsWindows())
        {
            bytes_4 = ProtectedData.Protect(bytes_3, null, DataProtectionScope.LocalMachine);

            d_bytes_4 = ProtectedData.Unprotect(bytes_4, null, DataProtectionScope.LocalMachine);
        }
#endif
#pragma warning restore CA1416 // 验证平台兼容性

        var d_bytes_3 = AESUtils.Decrypt(aes_cbc_2, d_bytes_4);
        var d_bytes_2 = AESUtils.Decrypt(aes_cfb_1, d_bytes_3);
        var d_value = AESUtils.DecryptToString(aes_cbc_1, d_bytes_2);

        TestContext.WriteLine(d_value);
    }

    [Test]
    public void LocalEncrypt()
    {
        var value = DateTime.Now.ToString() + " 🔮🎮";

        var key_str = Environment.MachineName;

        (var key, var iv) = AESUtils.GetParameters(key_str);

        var aes_cfb = AESUtils.Create(mode: CFB);
        aes_cfb.Key = key;
        aes_cfb.IV = iv;

        var data = AESUtils.EncryptToByteArray(aes_cfb, value);

        var value1 = AESUtils.DecryptToString(aes_cfb, data);

        Assert.IsTrue(value == value1);

        var aes_cfb_1 = AESUtils.Create(mode: CFB);
        aes_cfb_1.Key = key;
        aes_cfb_1.IV = iv;

        var value2 = AESUtils.DecryptToString(aes_cfb, data);
        var value3 = AESUtils.DecryptToString(aes_cfb_1, data);

        Assert.IsTrue(value2 == value3);

        Assert.IsTrue(value1 == value3);
    }
}