using GB5Shared.DaprCache;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.EventLogPublish;
using static GB5Shared.GB5Constant.Constant;
using GB5Shared.Resource.Response;
using GB5Shared.Telemetry;
using GB5Shared.Validation;
using Microsoft.Extensions.Logging;
using PERMBLL.Interfaces;
using PERMDAL.DTOs;
using PERMDAL.Interfaces;
using System.Text.Json;

namespace PERMBLL.Implementations;

public class MeasureBLL : IMeasureBLL
{
    private readonly IMeasureDAL       _dal;
    private readonly IValidation       _validation;
    private readonly KeyInvalidate     _keyInvalidate;
    private readonly EventLogPublish   _eventLog;
    private readonly ILogger<MeasureBLL> _logger;

    public MeasureBLL(
        IMeasureDAL dal,
        IValidation validation,
        KeyInvalidate keyInvalidate,
        EventLogPublish eventLog,
        ILogger<MeasureBLL> logger)
    {
        _dal           = dal;
        _validation    = validation;
        _keyInvalidate = keyInvalidate;
        _eventLog      = eventLog;
        _logger        = logger;
    }

    public async Task<string> GetMeasureAsync(int measureId, LoginDTO login, CancellationToken ct)
    {
        try
        {
            GB5Trace.Step("get-measure", new { measureId });
            var dto = await _dal.GetMeasureAsync(measureId, login, ct).ConfigureAwait(false);
            return JsonSerializer.Serialize(dto);
        }
        catch (Exception ex)
        {
            GB5Trace.MarkFailed("get-measure-failed", ex);
            _logger.LogError(ex, "GetMeasure failed for MeasureId {MeasureId}", measureId);
            throw;
        }
    }

    public async Task<string> GetMeasureListAsync(
        short? status, short? measureType, int page, int pageSize, LoginDTO login, CancellationToken ct)
    {
        try
        {
            GB5Trace.Step("get-measure-list", new { status, measureType, page });
            var list = await _dal.GetMeasureListAsync(status, measureType, page, pageSize, login, ct).ConfigureAwait(false);
            return JsonSerializer.Serialize(list);
        }
        catch (Exception ex)
        {
            GB5Trace.MarkFailed("get-measure-list-failed", ex);
            _logger.LogError(ex, "GetMeasureList failed");
            throw;
        }
    }

    public async Task<string> GetMeasureSelectListAsync(CriteriaDTO criteriaDTO, LoginDTO login, CancellationToken ct)
    {
        try
        {
            var list = await _dal.GetMeasureSelectListAsync(criteriaDTO, login, ct).ConfigureAwait(false);
            return JsonSerializer.Serialize(list);
        }
        catch (Exception ex)
        {
            GB5Trace.MarkFailed("get-measure-selectlist-failed", ex);
            _logger.LogError(ex, "GetMeasureSelectList failed");
            throw;
        }
    }

    public async Task<string> SaveMeasureAsync(MeasureDTO dto, LoginDTO login, CancellationToken ct)
    {
        try
        {
            GB5Trace.Step("validate-measure", new { dto.MeasureId });
            await _validation.NotEmpty(dto.MeasureName, nameof(dto.MeasureName)).ConfigureAwait(false);

            bool duplicate = await _dal.MeasureNameExistsAsync(dto.MeasureName, dto.MeasureId, login, ct).ConfigureAwait(false);
            if (duplicate)
                return $"Measure name '{dto.MeasureName}' already exists.";

            bool isNew = dto.MeasureId == 0;

            GB5Trace.Step("save-measure", new { dto.MeasureId, isNew });

            int rows;
            if (isNew)
            {
                dto.TenantId = login.ClientId;
                dto.Status   = 1;
                rows = await _dal.SaveMeasureAsync(dto, login, ct).ConfigureAwait(false);
            }
            else
            {
                rows = await _dal.UpdateMeasureAsync(dto, login, ct).ConfigureAwait(false);
            }

            if (rows == 0)
                return "No rows affected — Measure not saved.";

            GB5Trace.Step("event-publish", new { EventTypeId = isNew
                ? EventTypeConstant.SAVEPERMMEASUREEVENTTYPEID
                : EventTypeConstant.UPDATEPERMMEASUREEVENTTYPEID });

            await _eventLog.PublishEventLogAsync(
                isNew ? "Measure Created" : "Measure Updated",
                dto,
                isNew ? EventTypeConstant.SAVEPERMMEASUREEVENTTYPEID : EventTypeConstant.UPDATEPERMMEASUREEVENTTYPEID,
                dto.MeasureId,
                login,
                ct: ct).ConfigureAwait(false);

            var saveCacheKey = new CacheKeyGeneration().KeyGeneration(dto.MeasureId, EntityConstant.OBJECTPERMMEASURE, CacheKeyLevel.CLIENT_LEVEL, login);
            await _keyInvalidate.AllInvalidateCache(saveCacheKey).ConfigureAwait(false);

            return isNew ? SuccessResponse.SaveSuccess : SuccessResponse.UpdateSuccess;
        }
        catch (Exception ex)
        {
            GB5Trace.MarkFailed("save-measure-failed", ex);
            _logger.LogError(ex, "SaveMeasure failed for MeasureName {MeasureName}", dto.MeasureName);
            throw;
        }
    }

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

            int rows = await _dal.DeleteMeasureAsync(measureId, login, ct).ConfigureAwait(false);

            if (rows == 0)
                return "Measure not found or already deleted.";

            GB5Trace.Step("event-publish", new { EventTypeId = EventTypeConstant.DELETEPERMMEASUREEVENTTYPEID });

            await _eventLog.PublishEventLogAsync(
                "Measure Deleted",
                new { MeasureId = measureId },
                EventTypeConstant.DELETEPERMMEASUREEVENTTYPEID,
                measureId,
                login,
                ct: ct).ConfigureAwait(false);

            var deleteCacheKey = new CacheKeyGeneration().KeyGeneration(measureId, EntityConstant.OBJECTPERMMEASURE, CacheKeyLevel.CLIENT_LEVEL, login);
            await _keyInvalidate.AllInvalidateCache(deleteCacheKey).ConfigureAwait(false);

            return SuccessResponse.DeleteSuccessMessage;
        }
        catch (Exception ex)
        {
            GB5Trace.MarkFailed("delete-measure-failed", ex);
            _logger.LogError(ex, "DeleteMeasure failed for MeasureId {MeasureId}", measureId);
            throw;
        }
    }
}