using FMDAL.CustomCode.Meter;
using FMDAL.DTO.Meter;
using GB5Shared.DaprCache;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.QueryExecutor;
using GB5Shared.Resource.Response;
using GB5Shared.Telemetry;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using static GB5Shared.GB5Constant.Constant;

namespace FMBLL.Meter
{
    public class MeterBLL : IMeterBLL
    {
        private readonly IMeterDAL _MeterDAL;
        private readonly IQueryExecutor _queryExecutor;
        private readonly AutoNumber _autoNumber;
        private readonly KeyInvalidate _keyInvalidate;
        private readonly ILogger<MeterBLL> _logger;

        public MeterBLL(
            IMeterDAL MeterDAL,
            IQueryExecutor queryExecutor,
            AutoNumber autoNumber,
            KeyInvalidate keyInvalidate,
            ILogger<MeterBLL> logger)
        {
            _MeterDAL = MeterDAL;
            _queryExecutor = queryExecutor;
            _autoNumber = autoNumber;
            _keyInvalidate = keyInvalidate;
            _logger = logger;
        }

        public async Task<string> GetSelectListMeter(int FirstNumber, int MaxResult, CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                var result = await _MeterDAL.GetSelectListMeter(FirstNumber, MaxResult, CriteriaDTO, LoginDTO);
                return result;
            }
            catch (Exception ex)
            {
                throw new Exception($"Error in MeterBLL.GetSelectListMeter: {ex.Message}", ex);
            }
        }

        public async Task<MeterDTO?> GetMeter(int meterId, LoginDTO login, CancellationToken ct)
            => await _MeterDAL.GetMeter(meterId, login, ct).ConfigureAwait(false);

        public async Task<string> SaveMeter(MeterDTO dto, LoginDTO login, CancellationToken ct)
        {
            try
            {
                GB5Trace.Step("validate-meter", new { dto.MeterId });

                if (string.IsNullOrWhiteSpace(dto.MeterName)) throw new ArgumentException("MeterName is required");

                bool isNew = dto.MeterId == 0;

                GB5Trace.Step("save-meter", new { dto.MeterId, isNew });

                await using var tx = await _queryExecutor.BeginTransactionAsync(login).ConfigureAwait(false);
                try
                {
                    if (isNew)
                    {
                        var auto = await _autoNumber.GetNumberAsync(1, AUTONUMBERCONSTANT.METER, login).ConfigureAwait(false);
                        dto.MeterId = auto.StartNumber;
                        await _MeterDAL.SaveMeter(dto, login, tx, ct).ConfigureAwait(false);
                    }
                    else
                    {
                        await _MeterDAL.UpdateMeter(dto, login, tx, ct).ConfigureAwait(false);
                    }
                    await tx.CommitAsync(ct).ConfigureAwait(false);
                }
                catch
                {
                    await tx.RollbackAsync(ct).ConfigureAwait(false);
                    throw;
                }

                var cacheKey = new CacheKeyGeneration().KeyGeneration(dto.MeterId, EntityConstant.OBJECTMETER, CacheKeyLevel.CLIENT_LEVEL, login);
                await _keyInvalidate.AllInvalidateCache(cacheKey).ConfigureAwait(false);

                return isNew
                    ? $"{SuccessResponse.SaveSuccessMessage} {dto.MeterId}"
                    : SuccessResponse.UpdateSuccess;
            }
            catch (Exception ex)
            {
                GB5Trace.MarkFailed("save-meter-failed", ex);
                _logger.LogError(ex, "SaveMeter failed for MeterId {Id}", dto.MeterId);
                throw;
            }
        }

        public async Task<string> DeleteMeter(int meterId, LoginDTO login, CancellationToken ct)
        {
            try
            {
                GB5Trace.Step("delete-meter", new { meterId });

                await using var tx = await _queryExecutor.BeginTransactionAsync(login).ConfigureAwait(false);
                try
                {
                    await _MeterDAL.DeleteMeter(meterId, login.UserId, login, tx, ct).ConfigureAwait(false);
                    await tx.CommitAsync(ct).ConfigureAwait(false);
                }
                catch
                {
                    await tx.RollbackAsync(ct).ConfigureAwait(false);
                    throw;
                }

                var cacheKey = new CacheKeyGeneration().KeyGeneration(meterId, EntityConstant.OBJECTMETER, CacheKeyLevel.CLIENT_LEVEL, login);
                await _keyInvalidate.AllInvalidateCache(cacheKey).ConfigureAwait(false);

                return SuccessResponse.DeleteSuccessMessage;
            }
            catch (Exception ex)
            {
                GB5Trace.MarkFailed("delete-meter-failed", ex);
                _logger.LogError(ex, "DeleteMeter failed for MeterId {Id}", meterId);
                throw;
            }
        }
    }
}