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

namespace ServiceOutsideTests.Crypto
{
    public class AES
    {
        [Test]
        public void EncryptPasswordShort32Length()
        {
            byte[] key = ServiceShared.Crypto.AES.GetKey("a");
            string input = "Befundapp";
            string encrypted = ServiceShared.Crypto.AES.Encrypt(input, key);
            string decrypted = ServiceShared.Crypto.AES.Decrypt(encrypted, key);
            Assert.AreEqual(input, decrypted);
        }

        [Test]
        public void EncryptPasswordLong32Length()
        {
            byte[] key = ServiceShared.Crypto.AES.GetKey("a dasdas djakl jdklas jdlkjakldhsajkdhsakdhkajhdkjgahkdgsagdas gdj sadag jdsaj gdg jasdagj dgsa gdsa dsga dgsja gdjagdgasj gjhdga gdja");
            string input = "Hello World";
            string encrypted = ServiceShared.Crypto.AES.Encrypt(input, key);
            string decrypted = ServiceShared.Crypto.AES.Decrypt(encrypted, key);
            Assert.AreEqual(input, decrypted);
        }

        [Test]
        public void EncryptDecrypt()
        {
            for(int i = 0; i < 1000; i++)
            {
                int KeySize = new Random().Next(1, 4096);
                byte[] random = new byte[KeySize];
                RandomNumberGenerator.Fill(random);
                string key = Encoding.UTF8.GetString(random);
                string input = "Hello World";
                string encrypted = ServiceShared.Crypto.AES.Encrypt(input, ServiceShared.Crypto.AES.GetKey(key));
                string decrypted = ServiceShared.Crypto.AES.Decrypt(encrypted, ServiceShared.Crypto.AES.GetKey(key));
                Assert.AreEqual(input, decrypted);
            }
        }

        [Test]
        public void EncryptDecryptFixedValues()
        {
            string input = "Hello World";
            string encrypted = "JWHs6itvC1ncFamZFGOl8npLNCZAP2Vg/9jUPfRK8ORH0kJxOYGW";
            byte[] key = ServiceShared.Crypto.AES.GetKey("1");
            string decrypted = ServiceShared.Crypto.AES.Decrypt(encrypted, key);

            Assert.AreEqual(input, decrypted);
        }
    }
}