using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using static GB5Shared.GB5Constant.Constant;

namespace GB5Shared.DTO.Framework.HybridCache
{
    public class CacheDTO
    { 
        private int serverid = -1;
        private int clientid = -1;
        private int serverconfigid = -1;
        private int userid = -1;
        private int roleid = -1;
        private int logineventlogid = -1;
        private int objectid = -1;
        private int objecttypeid = -1;
        private string sourcedata = string.Empty;


        public int ServerId
        {
            get { return serverid; }
            set { serverid = value; }
        }

        public int ClientId
        {
            get { return clientid; }
            set { clientid = value; }
        }

        public int ServerConfigId
        {
            get { return serverconfigid; }
            set { serverconfigid = value; }
        }

        public int UserId
        {
            get { return userid; }
            set { userid = value; }
        }

        public int RoleId
        {
            get { return roleid; }
            set { roleid = value; }
        }

        public int LoginEventLogId
        {
            get { return logineventlogid; }
            set { logineventlogid = value; }
        }

        public int ObjectId
        {
            get { return objectid; }
            set { objectid = value; }
        }
        public int ObjectTypeId
        {
            get { return objecttypeid; }
            set { objecttypeid = value; }
        }
        public string SourceData
        {
            get { return sourcedata; }
            set { sourcedata = value; }
        }
    }
    public static class CacheKeyGenerator
    {
        public static string KeyGeneration(int ObjectId, int ObjectTypeId, int CachingKeyLevel, string SourceData, LoginDTO LoginDTO, CriteriaDTO CriteriaDTO = null)
        { 
            string DataToHash = null;
            string HashCachingKey = null;
            // ICommonFunctionFrameDAL Common = new CommonFunctionFrameDAL();
            CacheDTO CacheDTO = new CacheDTO();
            try
            {
                if (CachingKeyLevel == CacheKeyLevel.NOT_REQUIRED)
                {
                    return "Null";   //---Not Required, Key "Null"
                }
                if (CachingKeyLevel == CacheKeyLevel.OVERALL)
                {
                    CacheDTO.ServerId = -1;
                    CacheDTO.ClientId = -1;
                    CacheDTO.ServerConfigId = -1;
                    CacheDTO.UserId = -1;
                    CacheDTO.RoleId = -1;
                    CacheDTO.LoginEventLogId = -1;
                }
                if (CachingKeyLevel == CacheKeyLevel.DB_SERVER)
                {
                    CacheDTO.ServerId = LoginDTO.ServerId;
                }
                if (CachingKeyLevel == CacheKeyLevel.CLIENT_LEVEL)
                {
                    CacheDTO.ServerId = LoginDTO.ServerId;
                    CacheDTO.ServerConfigId = LoginDTO.ServerConfigId;
                    CacheDTO.ClientId = LoginDTO.ClientId;
                }
                if (CachingKeyLevel == CacheKeyLevel.ROLE_LEVEL)
                {
                    CacheDTO.ServerId = LoginDTO.ServerId;
                    CacheDTO.ClientId = LoginDTO.ClientId;
                    CacheDTO.ServerConfigId = LoginDTO.ServerConfigId;
                    CacheDTO.RoleId = LoginDTO.RoleId;
                }
                if (CachingKeyLevel == CacheKeyLevel.USER_LEVEL)
                {
                    CacheDTO.ServerId = LoginDTO.ServerId;
                    CacheDTO.ClientId = LoginDTO.ClientId;
                    CacheDTO.ServerConfigId = LoginDTO.ServerConfigId;
                    CacheDTO.UserId = LoginDTO.UserId;
                    CacheDTO.RoleId = LoginDTO.RoleId;
                }
                if (CachingKeyLevel == CacheKeyLevel.SESSION_LEVEL)
                {
                    CacheDTO.LoginEventLogId = LoginDTO.LoginEventLogId;
                }
                CacheDTO.ObjectId = ObjectId;
                CacheDTO.ObjectTypeId = ObjectTypeId;
                CacheDTO.SourceData = SourceData;

                //string LoginDTOJsonString = JsonSerializer.Serialize(CacheDTO);
                //DataToHash = $"{ObjectId}:{ObjectTypeId}:{LoginDTOJsonString}";

                //if (CriteriaDTO != null)
                //{
                //    string criteriaJsonString = JsonSerializer.Serialize(CriteriaDTO);
                //    DataToHash = $"{DataToHash}:{criteriaJsonString}";
                //}


                //using (Sha256 = SHA256.Create())  //SHA-256 hash of the data for Cachekey
                //{
                //    byte[] HashBytes = Sha256.ComputeHash(Encoding.UTF8.GetBytes(DataToHash));
                //    HashCachingKey = Convert.ToBase64String(HashBytes);
                //}
                return CacheKeyGenerator.GenerateKey(CacheDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
        private static string GenerateKey(CacheDTO dto)
        {
            return $"{dto.ObjectId}|{dto.ObjectTypeId}|{dto.ServerId}|{dto.ServerConfigId}|{dto.ClientId}|{dto.UserId}|{dto.RoleId}|{dto.LoginEventLogId}|{dto.SourceData}";
        }
    }


}