using FrameworkDAL.DTO.Server;
using FrameworkDAL.Query.Server;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.PickListGenerator;
using GB5Shared.QueryExecutor;
using Newtonsoft.Json;

namespace FrameworkDAL.CustomCode.Server
{
    public class ServerDAL : IServerDAL
    {
        private readonly IQueryExecutor _queryExecutor;
        private readonly IPickListExecutor _pickListExecutor;

        public ServerDAL(IQueryExecutor queryExecutor, IPickListExecutor pickListExecutor)
        {
            _queryExecutor = queryExecutor;
            _pickListExecutor = pickListExecutor;
        }

        public async Task<DBInstanceDTO?> GetDBInstanceById(int dbInstanceId, LoginDTO login, CancellationToken ct)
        {
            try
            {
                return await _queryExecutor.QuerySingleAsync<DBInstanceDTO>(
                    login, ServerQB.GET_DBINSTANCE_BY_ID, new { DBInstanceId = dbInstanceId },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (Exception ex)
            {
                throw new Exception($"Failed to retrieve DBInstance {dbInstanceId}: {ex.Message}", ex);
            }
        }

        public async Task<string> GetSelectListDBInstance(int firstNumber, int maxResult, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var param = new { FirstNumber = firstNumber, MaxResult = maxResult };
                var list = await _queryExecutor.QueryAsync<object>(
                    login, ServerQB.GET_SELECTLIST_DBINSTANCE, param, cancellationToken: ct).ConfigureAwait(false);
                return JsonConvert.SerializeObject(list);
            }
            catch (Exception ex)
            {
                throw new Exception($"Failed to retrieve DBInstance select list: {ex.Message}", ex);
            }
        }

        public async Task<IEnumerable<ServerPicklistDTO>> GetSelectListServer(
            int FirstNumber,
            int MaxResult,
            CriteriaDTO CriteriaDTO,
            LoginDTO LoginDTO)
        {
            try
            {
                string sql = ServerQB.GET_SELECTLIST_SERVER_BASE;
                sql = await ApplyServerCriteria(sql, CriteriaDTO, LoginDTO);
                sql = await ApplyServerCriteria(sql, LoginDTO.UserCriteriaDTO, LoginDTO);
                sql += ServerQB.GET_SELECTLIST_SERVER_PAGING_SUFFIX;

                var parameter = new
                {
                    firstnumber = FirstNumber,
                    maxresult = MaxResult
                };

                return await _queryExecutor.QueryAsync<ServerPicklistDTO>(LoginDTO, sql, parameter);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<int> GetSelectListServerCount(CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                string sql = ServerQB.GET_SELECTLIST_SERVER_COUNT_BASE;
                sql = await ApplyServerCriteria(sql, CriteriaDTO, LoginDTO);
                sql = await ApplyServerCriteria(sql, LoginDTO.UserCriteriaDTO, LoginDTO);

                return await _queryExecutor.ExecuteScalarAsync<int>(LoginDTO, sql, null);
            }
            catch (Exception)
            {
                throw;
            }
        }

        private async Task<string> ApplyServerCriteria(string sql, CriteriaDTO criteriaDTO, LoginDTO loginDTO)
        {
            string[,] criteriaMap = new string[,]
            {
                { "ServerPicklistId",          "SERVERID" },
                { "ServerPicklistName",        "SERVERNAME" },
                { "ServerPicklistIp",          "SERVERIP" },
                { "ServerPicklistMachineName", "SERVERMACHINENAME" }
            };

            return await _pickListExecutor.ApplyCriteria(sql, criteriaMap, criteriaDTO, loginDTO);
        }
    }
}