using System;
using System.ComponentModel.DataAnnotations;
using System.Threading;
using System.Threading.Tasks;
using FrameworkDAL.CustomCode.Entitlement;
using FrameworkDAL.DTO.Entitlement;
using GB5Shared.DaprCache;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.Response;
using GB5Shared.Validation;

namespace FrameworkBLL.Entitlement
{
    public class FeatureDashboardMapBLL : IFeatureDashboardMapBLL
    {
        private readonly IFeatureDashboardMapDAL _FeatureDashboardMapDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;
        private readonly KeyInvalidate _KeyInvalidate;

        public FeatureDashboardMapBLL(IFeatureDashboardMapDAL FeatureDashboardMapDAL, AutoNumber AutoNumber, IValidation Validation, KeyInvalidate KeyInvalidate)
        {
            _FeatureDashboardMapDAL = FeatureDashboardMapDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
            _KeyInvalidate = KeyInvalidate;
        }

        public async Task<string> GetFeatureDashboardMap(int DashboardId, LoginDTO LoginDTO, CancellationToken ct = default)
        {
            try
            {
                return await _FeatureDashboardMapDAL.GetFeatureDashboardMap(DashboardId, LoginDTO, ct);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveFeatureDashboardMap(FeatureDashboardMapDTO FeatureDashboardMapDTO, LoginDTO LoginDTO, CancellationToken ct = default)
        {
            if (FeatureDashboardMapDTO == null) throw new ArgumentNullException(nameof(FeatureDashboardMapDTO));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                await _Validation.NotEmpty(FeatureDashboardMapDTO.FeatureCode, nameof(FeatureDashboardMapDTO.FeatureCode));
                if (FeatureDashboardMapDTO.DashboardId == 0)
                    throw new ArgumentException("DashboardId is required.");

                string result;
                if (FeatureDashboardMapDTO.FeatureDashboardMapId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(1, "FEATUREDASHBOARDMAP", LoginDTO);
                    FeatureDashboardMapDTO.FeatureDashboardMapId = autoNumberDTO.StartNumber;

                    await _FeatureDashboardMapDAL.SaveFeatureDashboardMap(FeatureDashboardMapDTO, LoginDTO, ct);
                    result = $"{SuccessResponse.SaveSuccessMessage} {FeatureDashboardMapDTO.FeatureDashboardMapId}";
                }
                else
                {
                    await _FeatureDashboardMapDAL.UpdateFeatureDashboardMap(FeatureDashboardMapDTO, LoginDTO, ct);
                    result = $"{SuccessResponse.UpdateSuccessMessage} {FeatureDashboardMapDTO.FeatureDashboardMapId}";
                }

                // Changes what GetDashboardListForUser's entitlement-gating filter excludes —
                // affects potentially many users, same broad-impact reasoning as DashboardBLL's
                // own admin-driven writes. Full flush; this is a rare admin write.
                await _KeyInvalidate.AllInvalidateCache("-1").ConfigureAwait(false);
                return result;
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && FeatureDashboardMapDTO.FeatureDashboardMapId > 0)
                    await _AutoNumber.RollbackAutoNumber("FEATUREDASHBOARDMAP", FeatureDashboardMapDTO.FeatureDashboardMapId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteFeatureDashboardMap(int FeatureDashboardMapId, LoginDTO LoginDTO, CancellationToken ct = default)
        {
            try
            {
                var result = await _FeatureDashboardMapDAL.DeleteFeatureDashboardMap(FeatureDashboardMapId, LoginDTO, ct);
                await _KeyInvalidate.AllInvalidateCache("-1").ConfigureAwait(false);
                return result;
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}