using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using FMBLL.AssetTypeActivity;
using FMDAL.CustomCode.AssetType;
using FMDAL.DTO.AssetType;
using FMDAL.DTO.AssetTypeActivity;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.ResponseStandard;

namespace FMBLL.AssetType
{
    public class AssetTypeBLL : IAssetTypeBLL
    {
        private readonly IAssetTypeDAL _AssetTypeDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IAssetTypeActivityBLL _AssetTypeActivityBLL;

        public AssetTypeBLL(IAssetTypeDAL AssetTypeDAL, AutoNumber AutoNumber, IAssetTypeActivityBLL AssetTypeActivityBLL)
        {
            _AssetTypeDAL = AssetTypeDAL;
            _AutoNumber = AutoNumber;
            _AssetTypeActivityBLL = AssetTypeActivityBLL;
        }

        public async Task<IEnumerable<AssetTypeDTO>> GetAssetType(int AssetTypeId, LoginDTO LoginDTO, CancellationToken ct = default)
        {
            try
            {
                var result = (await _AssetTypeDAL.GetAssetType(AssetTypeId, LoginDTO)).ToList();

                foreach (var assetType in result)
                {
                    var activities = await _AssetTypeActivityBLL.GetAssetTypeActivityListByAssetType(assetType.AssetTypeId, LoginDTO, ct).ConfigureAwait(false);
                    assetType.AssetTypeActivityArray = activities.ToList();
                }

                return result;
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveAssetType(AssetTypeDTO AssetTypeDTO, LoginDTO LoginDTO, CancellationToken ct = default)
        {
            try
            {
                AssetTypeDTO.TenantId = LoginDTO.ClientId;
                int initialId = AssetTypeDTO.AssetTypeId;
                int count = 1 + initialId;
                string message;
                if (initialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "ASSETTYPE", LoginDTO);
                    AssetTypeDTO.AssetTypeId = AutoNumberDTO.StartNumber;

                    await _AssetTypeDAL.SaveAssetType(AssetTypeDTO, LoginDTO);
                    message = "Details saved successfully.";
                }
                else
                {
                    await _AssetTypeDAL.UpdateAssetType(AssetTypeDTO, LoginDTO);
                    message = "Details updated successfully.";

                    var existingActivities = await _AssetTypeActivityBLL.GetAssetTypeActivityListByAssetType(AssetTypeDTO.AssetTypeId, LoginDTO, ct).ConfigureAwait(false);
                    var incomingIds = (AssetTypeDTO.AssetTypeActivityArray ?? new List<AssetTypeActivityDTO>())
                        .Select(a => a.AssetTypeActivityId)
                        .Where(id => id != 0)
                        .ToHashSet();

                    foreach (var existing in existingActivities)
                    {
                        if (!incomingIds.Contains(existing.AssetTypeActivityId))
                        {
                            await _AssetTypeActivityBLL.DeleteAssetTypeActivity(existing.AssetTypeActivityId, LoginDTO, ct).ConfigureAwait(false);
                        }
                    }
                }

                foreach (var activity in AssetTypeDTO.AssetTypeActivityArray ?? new List<AssetTypeActivityDTO>())
                {
                    activity.AssetTypeId = AssetTypeDTO.AssetTypeId;
                    await _AssetTypeActivityBLL.SaveAssetTypeActivity(activity, LoginDTO, ct).ConfigureAwait(false);
                }

                return message;
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListAssetType(CriteriaDTO criteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _AssetTypeDAL.GetSelectListAssetType(criteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<Result<string>> DeleteAssetType(int AssetTypeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _AssetTypeDAL.DeleteAssetType(AssetTypeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

    }
}