using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;
using xCommons.Configurations;
using xCommons.Extensions;
using xDataService.Configuration;
using xExceptions.Constants;
using xIdentityService.Interfaces;
using xModels.Dtos;
using xPushService.Base;
using xPushService.Constants;
using xStringService.Extensions;
using xStringService.Interfaces.Dtos;
using xStringService.Models.Dtos;
using xStringService.Models.Entities;

namespace xStringService.Providers.Dtos
{
    public class XStringServiceProvider : XBaseDtoProvider<XString, XStringDto, int, XStringDtoHub>, IXStringServiceProvider
    {
        public XAppConfiguration AppConfiguration { get; }

        public XStringServiceProvider(
            IHubContext<XStringDtoHub> hub,
            XDataServiceConfiguration dataConfiguration,
            IXStringRepositoryService service,
            XAppConfiguration appConfiguration,
            IXIdentityProvider identityProvider = null
        ) : base(
            hub,
            dataConfiguration,
            service,
            identityProvider
        )
        {
            AppConfiguration = appConfiguration;
        }

        //
        #region Retrievers ...
        /// <summary>
        /// Retrieve all Exists Languages ...
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<IEnumerable<string>> GetLanguages(
            CancellationToken cancellationToken = default
        )
        {
            //
            var result = (await Service.GetAllAsync(
                includeBuilder: null,
                ignoreSoftDeleteds: true,
                cancellationToken: cancellationToken,
                orderBuilder: x => x.OrderBy(y => y.Language)
            ))
            .AsQueryable()
            .Select(e => e.Language)
            .Distinct()
            .ToList();

            //
            // Check Configuration Default Language Exists ...
            var hasDefaultLanguage = !AppConfiguration.DefaultLanguage.IsNullOrEmpty();
            if (hasDefaultLanguage)
            {
                //
                // Find Default Language on Result ...
                hasDefaultLanguage = result.Any(e => e.ToNormalString() == AppConfiguration.DefaultLanguage.ToNormalString());
                if (!hasDefaultLanguage)
                {
                    result.Add(AppConfiguration.DefaultLanguage);
                }
            }

            //
            result = result
                .Distinct()
                .ToList();

            //
            return result;
        }

        /// <summary>
        /// Check Specified Resource Exists or not ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<bool> IsResourceExists(
            string resource,
            string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            var result = false;

            //
            // Validate ...
            result = !resource.IsNullOrEmpty();
            if (!result)
            {
                return result;
            }

            //
            XStringDto dto = null;
            if (language.IsNullOrEmpty())
            {
                //
                dto = await Service
                    .FindOneAsync(
                        includeBuilder: null,
                        ignoreSoftDeleteds: true,
                        cancellationToken: cancellationToken,
                        predicate: e => e.ResourceTitle == resource
                    );
            }
            else
            {
                //
                dto = await Service
                    .FindOneAsync(
                        includeBuilder: null,
                        ignoreSoftDeleteds: true,
                        cancellationToken: cancellationToken,
                        predicate:
                            e => e.ResourceTitle == resource &&
                            e.Language.ToNormalString() == language.ToNormalString()
                    );
            }

            //
            result = !dto.IsNullOrDefault();

            //
            return result;
        }

        /// <summary>
        /// Retrieve Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XStringDto> Get(
            string resource,
            string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Validate ...
            if (resource.IsNullOrEmpty() || language.IsNullOrEmpty())
            {
                XException.InvalidArgs.Throw();
            }

            //
            // Check Resource Exists ...
            var isExists = await IsResourceExists(
                resource: resource,
                language: language
            );
            if (!isExists)
            {
                XException.NotFound.Throw();
            }

            //
            var result = await Service
                .FindOneAsync(
                    includeBuilder: null,
                    ignoreSoftDeleteds: true,
                    cancellationToken: cancellationToken,
                    predicate: e =>
                        e.ResourceTitle == resource &&
                        e.Language.ToNormalString() == language.ToNormalString()
            );
            if (result.IsNullOrDefault())
            {
                XException.ActionFailed.Throw();
            }

            //
            return result;
        }

        /// <summary>
        /// Retrieve Specified Translation of Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<string> GetResourceValue(
            string resource,
            string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            var result = "";

            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Validate ...
            var isValid =
                !resource.IsNullOrEmpty() &&
                !language.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            // Check Langauage Exists ...
            var languages = await GetLanguages(cancellationToken);
            isValid = languages.Any(l => l.ToNormalString() == language.ToNormalString());
            if (!isValid)
            {
                XException.NotFound.Throw();
            }

            //
            // Check Resource Exists ...
            isValid = await IsResourceExists(
                resource: resource,
                language: language,
                cancellationToken: cancellationToken
            );
            if (!isValid)
            {
                XException.NotFound.Throw();
            }

            //
            var dto = await Service.FindOneAsync(
                includeBuilder: null,
                ignoreSoftDeleteds: true,
                cancellationToken: cancellationToken,
                predicate: e =>
                    e.ResourceTitle == resource &&
                    e.Language.ToNormalString() == language.ToNormalString()
            );
            isValid = !dto.IsNullOrDefault();
            if (!isValid)
            {
                XException.ActionFailed.Throw();
            }

            //
            result = dto.TranslatedValue;

            //
            return result;
        }

        /// <summary>
        /// Retrieve an Specified Resource Items ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<IEnumerable<XStringDto>> GetResources(
            string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            var isValid = await IsResourceExists(resource);
            if (!isValid)
            {
                XException.NotFound.Throw();
            }

            //
            var result = await Service
                .FindManyAsync(
                    includeBuilder: null,
                    ignoreSoftDeleteds: true,
                    predicate: e =>
                        e.ResourceTitle == resource,
                    orderBuilder: x =>
                        x.OrderBy(y => y.ResourceTitle),
                    cancellationToken: cancellationToken
                );

            //
            return result;
        }

        /// <summary>
        /// Retrieve Specified Resource Items as XResourceDto Presentation ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XResourceDto> GetResource(
            string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isExists = await IsResourceExists(
                language: null,
                resource: resource,
                cancellationToken: cancellationToken
            );
            if (!isExists)
            {
                XException.NotFound.Throw();
            }

            //
            // Retrieve String Dto (s) ...
            var resources = await GetResources(
                resource: resource,
                cancellationToken: cancellationToken
            );
            if (!resource.HasChild())
            {
                XException.NotFound.Throw();
            }

            //
            var result = new XResourceDto
            {
                Resource = resource,
                Locales = resources.ToXLocaleResourceDtos()
            };

            //
            return result;
        }
        #endregion

        //
        #region Query ...
        /// <summary>
        /// Query Resource IDs ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XQueryResult<string>> QueryResourceIds(
            XQuery query,
            CancellationToken cancellationToken = default
        )
        {
            //
            var dtoResult = await Service.QueryAsync(
                query: query,
                predicate: null,
                includeBuilder: null,
                ignoreSoftDeleteds: true,
                orderBuilder: x =>
                    x.OrderBy(y => y.ResourceTitle),
                cancellationToken: cancellationToken
            );

            //
            var result = new XQueryResult<string>()
                .UpdateData(
                    updateWith: dtoResult,
                    propertyBlackList: new List<string>
                    {
                        nameof(XQueryResult<string>.Items)
                    });

            //
            result.Items = dtoResult.Items.ToList().Select(dto => dto.ResourceTitle);

            //
            return result;
        }

        /// <summary>
        /// Query Specified Language Resources ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XQueryResult<XStringDto>> QueryLanguageResources(
            XQuery query,
            string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            var result = await Service.QueryAsync(
                query: query,
                includeBuilder: null,
                ignoreSoftDeleteds: true,
                orderBuilder: x => x
                    .OrderBy(y => y.Language)
                    .ThenBy(y => y.ResourceTitle),
                cancellationToken: cancellationToken,
                predicate: x =>
                    x.Language.ToNormalString() == language.ToNormalString()
            );

            //
            return result;
        }

        /// <summary>
        /// Query Locale Resources ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XQueryResult<XLocaleResourceDto>> QueryLocaleResources(
            XQuery query,
            string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            Expression<Func<XString, bool>> predicate = null;
            if (!language.IsNullOrEmpty())
            {
                //
                predicate = x =>
                    x.Language.ToNormalString() == language.ToNormalString();
            }

            //
            var dtoResult = await Service.QueryAsync(
                query: query,
                includeBuilder: null,
                predicate: predicate,
                ignoreSoftDeleteds: true,
                orderBuilder: x => x
                    .OrderBy(y => y.Language)
                    .ThenBy(y => y.ResourceTitle),
                cancellationToken: cancellationToken
            );

            //
            var result = new XQueryResult<XLocaleResourceDto>()
                .UpdateData(
                    updateWith: dtoResult,
                    propertyBlackList: new List<string>
                    {
                        nameof(XQueryResult<XLocaleResourceDto>.Items)
                    });

            //
            result.Items = dtoResult.Items.ToList().ToXLocaleResourceDtos();

            //
            return result;
        }
        #endregion

        //
        #region Add/Update Actions ...
        /// <summary>
        /// Add Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<bool> Add(
            string resource,
            string value,
            string language = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            bool result = false;

            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Validate ...
            result =
                !value.IsNullOrEmpty() &&
                !resource.IsNullOrEmpty() &&
                !language.IsNullOrEmpty();
            if (!result)
            {
                return result;
            }

            //
            // Check Exists ...
            bool isExists = await IsResourceExists(
                resource: resource,
                language: language,
                cancellationToken: cancellationToken
            );
            result = !isExists;
            if (!result)
            {
                XException.Duplicate.Throw();
            }

            //
            // Prepare Entity to Add ...
            XStringDto item = new XStringDto
            {
                Language = language,
                TranslatedValue = value,
                ResourceTitle = resource,
            };
            item = await AddAsync(
                item: item,
                saveChanges: true,
                connectionId: connectionId,
                cancellationToken: cancellationToken
            );
            result = !item.IsNullOrDefault();

            //
            return result;
        }

        /// <summary>
        /// Update Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<bool> Update(
            string resource,
            string value,
            string language = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            bool result = false;

            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Validate ...
            result =
                !value.IsNullOrEmpty() &&
                !language.IsNullOrEmpty() &&
                !resource.IsNullOrEmpty();
            if (!result)
            {
                return result;
            }

            //
            // Check Value Must Exists ...
            result = await IsResourceExists(
                resource: resource,
                language: language,
                cancellationToken: cancellationToken
            );
            if (!result)
            {
                XException.NotFound.Throw();
            }

            //
            var item = await Get(
                language: language,
                resource: resource,
                cancellationToken: cancellationToken
            );
            item.TranslatedValue = value;
            item = await UpdateAsync(
                item: item,
                id: item.Id,
                saveChanges: true,
                connectionId: connectionId,
                cancellationToken: cancellationToken
            );
            result = !item.IsNullOrDefault();

            //
            return result;
        }

        /// <summary>
        /// Add Or Update Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<bool> AddOrUpdate(
            string resource,
            string value,
            string language = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            var result = false;

            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Check Existsance ...
            bool isExists = await IsResourceExists(
                resource: resource,
                language: language
            );

            //
            // Act Based on Existance ...
            if (isExists)
            {
                //
                result = await Update(
                    value: value,
                    resource: resource,
                    language: language,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );
            }
            else
            {
                //
                result = await Add(
                    value: value,
                    resource: resource,
                    language: language,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );
            }

            //
            return result;
        }

        /// <summary>
        /// Add Specified Locale Resource ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XStringDto> AddByLocaleResource(
            XLocaleResourceDto item,
            string resource,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid =
                !item.IsNull() &&
                !resource.IsNullOrEmpty() &&
                !item.Value.IsNullOrEmpty() &&
                !item.Language.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            // Check Specified Resource / Language Exists ...
            isValid = await IsResourceExists(
                resource: resource,
                language: item.Language,
                cancellationToken: cancellationToken
            );
            if (isValid)
            {
                XException.Duplicate.Throw();
            }

            //
            // Prepare Item to Add ...
            var result = new XStringDto
            {
                Language = item.Language,
                ResourceTitle = resource,
                TranslatedValue = item.Value
            };
            result = await AddAsync(
                item: result,
                saveChanges: true,
                connectionId: connectionId,
                cancellationToken: cancellationToken
            );

            //
            return result;
        }

        /// <summary>
        /// Update Specified Locale Resource ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XStringDto> UpdateByLocaleResource(
            XLocaleResourceDto item,
            string resource,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid =
                !item.IsNull() &&
                !resource.IsNullOrEmpty() &&
                !item.Value.IsNullOrEmpty() &&
                !item.Language.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            // Check Specified Resource / Language Exists ...
            isValid = await IsResourceExists(
                resource: resource,
                language: item.Language,
                cancellationToken: cancellationToken
            );
            if (!isValid)
            {
                XException.NotFound.Throw();
            }

            //
            var result = await Get(
                resource: resource,
                language: item.Language,
                cancellationToken: cancellationToken
            );
            isValid = !result.IsNullOrDefault();
            if (!isValid)
            {
                XException.NotFound.Throw();
            }

            //
            // Update ...
            result.TranslatedValue = item.Value;
            result = await UpdateAsync(
                item: result,
                id: result.Id,
                saveChanges: true,
                connectionId: connectionId,
                cancellationToken: cancellationToken
            );
            isValid = !result.IsNullOrDefault();
            if (!isValid)
            {
                XException.ActionFailed.Throw();
            }

            //
            return result;
        }

        /// <summary>
        /// Add Or Update Resource By Locale ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<XStringDto> AddOrUpdateByLocaleResource(
            XLocaleResourceDto item,
            string resource,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid =
                !item.IsNull() &&
                !resource.IsNullOrEmpty() &&
                !item.Value.IsNullOrEmpty() &&
                !item.Language.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            // Check Specified Resource / Language Exists ...
            isValid = await IsResourceExists(
                resource: resource,
                language: item.Language,
                cancellationToken: cancellationToken
            );

            //
            XStringDto result = null;
            if (!isValid)
            {
                //
                result = await AddByLocaleResource(
                    item: item,
                    resource: resource,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );
            }
            else
            {
                //
                result = await UpdateByLocaleResource(
                    item: item,
                    resource: resource,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );
            }
            if (result.IsNullOrDefault())
            {
                XException.ActionFailed.Throw();
            }

            //
            return result;
        }

        /// <summary>
        /// Add Or Update all XResourceDto(s) Locales ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<IEnumerable<XStringDto>> AddByResource(
            XResourceDto item,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid =
                !item.IsNull() &&
                item.Locales.HasChild() &&
                !item.Resource.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            var result = await Task
                .WhenAll(item.Locales
                    .Select(async e => await AddOrUpdateByLocaleResource(
                        item: e,
                        resource: item.Resource,
                        connectionId: connectionId,
                        cancellationToken: cancellationToken)));

            //
            return result;
        }
        #endregion

        //
        #region Remove Actions ...
        /// <summary>
        /// Remove all Specified Language's Resources ...
        /// </summary>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task RemoveLanguageResources(
            string language,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid = !language.IsNullOrEmpty();
            if (!isValid)
            {
                return;
            }

            //
            var dtos = await Service
                .FindManyAsync(
                    orderBuilder: null,
                    includeBuilder: null,
                    ignoreSoftDeleteds: true,
                    cancellationToken: cancellationToken,
                    predicate: e =>
                        e.Language.ToNormalString() == language.ToNormalString());

            //
            try
            {
                //
                await Service.RemoveRangeAsync(
                    items: dtos,
                    softDelete: false,
                    saveChanges: true,
                    cancellationToken: cancellationToken
                );

                //
                var ids = dtos.Select(e => e.Id);
                await SendPush(
                    connectionId: connectionId,
                    payLoad: ids.ToJSON(camelCase: true),
                    cancellationToken: cancellationToken,
                    action: XBaseEntityHubAction.DeleteMany.GetStringValue()
                );
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// Remove all Specified Resource Ids instances ... 
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<IEnumerable<XStringDto>> RemoveResource(
            string resource,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            // Validate ...
            bool isValid = !resource.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //
            var result = await Service
                .FindManyAsync(
                    orderBuilder: null,
                    includeBuilder: null,
                    ignoreSoftDeleteds: true,
                    cancellationToken: cancellationToken,
                    predicate: e =>
                        e.ResourceTitle.ToNormalString() == resource.ToNormalString());

            //
            try
            {
                //
                await Service.RemoveRangeAsync(
                    items: result,
                    softDelete: false,
                    saveChanges: true,
                    cancellationToken: cancellationToken
                );

                //
                var ids = result.Select(e => e.Id);
                await SendPush(
                    connectionId: connectionId,
                    payLoad: ids.ToJSON(camelCase: true),
                    cancellationToken: cancellationToken,
                    action: XBaseEntityHubAction.DeleteMany.GetStringValue()
                );
            }
            catch (Exception ex)
            {
                throw ex;
            }

            //
            return result;
        }

        /// <summary>
        /// Remove Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<bool> Remove(
            string resource,
            string language = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            bool result = false;

            //
            // Normalize ...
            if (language.IsNullOrEmpty())
            {
                language = AppConfiguration.DefaultLanguage;
            }

            //
            // Validate ...
            result =
                !language.IsNullOrEmpty() &&
                !resource.IsNullOrEmpty();
            if (!result)
            {
                return result;
            }

            //
            // Check Resource Exists ...
            result = await IsResourceExists(
                language: language,
                resource: resource,
                cancellationToken: cancellationToken
            );
            if (!result)
            {
                return result;
            }

            //
            var dto = await Get(
                language: language,
                resource: resource,
                cancellationToken: cancellationToken
            );
            result = !dto.IsNullOrDefault();
            if (!result)
            {
                return result;
            }

            //
            dto = await RemoveAsync(
                id: dto.Id,
                softDelete: false,
                saveChanges: true,
                connectionId: connectionId,
                cancellationToken: cancellationToken
            );
            result = !dto.IsNullOrDefault();

            //
            return result;
        }

        /// <summary>
        /// Remove all Resource of Specified XResourceDto ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task RemoveByResource(
            XResourceDto item,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            bool isValid =
                !item.IsNullOrDefault() &&
                item.Locales.HasChild() &&
                !item.Resource.IsNullOrEmpty();
            if (!isValid)
            {
                XException.InvalidArgs.Throw();
            }

            //            
            foreach (var locale in item.Locales)
            {
                //
                await Remove(
                    resource: item.Resource,
                    language: locale.Language,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );
            }
        }
        #endregion
    }
}