using Force.Crc32;
using System.IO;

namespace System.Security.Cryptography
{
    partial class Hashs
    {
        static Crc32Algorithm CreateCrc32()
        {
            return new Crc32Algorithm();
        }

        partial class String
        {
            partial class Lengths
            {
                public const int Crc32 = 8;
            }

            /// <summary>
            /// 计算Crc32值
            /// </summary>
            /// <param name="text"></param>
            /// <param name="isLower"></param>
            /// <returns></returns>
            public static string Crc32(string text, bool isLower = def_hash_str_is_lower) => ComputeHashString(text, CreateCrc32(), isLower);

            /// <summary>
            /// 计算Crc32值
            /// </summary>
            /// <param name="buffer"></param>
            /// <param name="isLower"></param>
            /// <returns></returns>
            public static string Crc32(byte[] buffer, bool isLower = def_hash_str_is_lower) => ComputeHashString(buffer, CreateCrc32(), isLower);

            /// <summary>
            /// 计算Crc32值
            /// </summary>
            /// <param name="inputStream"></param>
            /// <param name="isLower"></param>
            /// <returns></returns>
            public static string Crc32(Stream inputStream, bool isLower = def_hash_str_is_lower) => ComputeHashString(inputStream, CreateCrc32(), isLower);
        }

        partial class ByteArray
        {
            /// <summary>
            /// 计算Crc32值
            /// </summary>
            /// <param name="buffer"></param>
            /// <returns></returns>
            public static byte[] Crc32(byte[] buffer) => ComputeHash(buffer, CreateCrc32());

            /// <summary>
            /// 计算Crc32值
            /// </summary>
            /// <param name="inputStream"></param>
            /// <returns></returns>
            public static byte[] Crc32(Stream inputStream) => ComputeHash(inputStream, CreateCrc32());
        }
    }
}