using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;
using xCategoryService.Interfaces;
using xCategoryService.Models.Dtos;
using xIdentityModels.Models;
using xModels.Dtos;

namespace xCategoryService.Providers
{
    /// <summary>
    /// Completely Exported Service ...
    /// </summary>
    public class XCategoryService : IXCategoryService
    {
        private readonly IXCategoryProvider categoryProvider;
        private readonly IXSubCategoryProvider subCategoryProvider;

        public XCategoryService(
            IXCategoryProvider categoryProvider,
            IXSubCategoryProvider subCategoryProvider
        )
        {
            this.categoryProvider = categoryProvider;
            this.subCategoryProvider = subCategoryProvider;
        }

        //
        #region Category Provider ...
        /// <summary>
        /// Check Has Specified Locale or not ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<bool> CategoryHasLocale(
            int id,
            string language,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .HasLocale(
                    id: id,
                    language: language,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Load an Item by all of it's Related Translations ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>        
        public virtual async Task<XCategoryResourceDto> GetCategoryResource(
            int id,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .GetResource(
                    id: id,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Add Item for Specified Language ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> AddCategory(
            XCategoryDto item,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .Add(
                    item: item,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Add Item by It's Locales ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> AddCategoryResource(
            XCategoryResourceDto item,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .AddResource(
                    item: item,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Remove Item for Specified Language ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="language">if null, Remove All</param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> RemoveCategory(
            int id,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .Remove(
                    id: id,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Update an Item for Specified Language ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="item"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> UpdateCategory(
            int id,
            XCategoryDto item,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .Update(
                    id: id,
                    item: item,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Refresh a Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> RefreshCategory(
            XCategoryResourceDto resource,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .Refresh(
                    resource: resource,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Get All Resources ...
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XCategoryResourceDto>> GetAllCategoryResources(
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .GetAllResources(
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Find One Resource ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XCategoryResourceDto> FindOneCategoryResource(
            Expression<Func<XCategoryResourceDto, bool>> predicate = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .FindOneResource(
                    predicate: predicate,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Find Many Resource ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XCategoryResourceDto>> FindManyCategoryResource(
            Expression<Func<XCategoryResourceDto, bool>> predicate = null,
            Func<IQueryable<XCategoryResourceDto>, IOrderedQueryable<XCategoryResourceDto>> orderBuilder = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .FindManyResource(
                    predicate: predicate,
                    orderBuilder: orderBuilder,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Retrieve Resources by Query Pattern ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XQueryResult<XCategoryResourceDto>> QueryCategoryResources(
            XQuery query = null,
            Expression<Func<XCategoryResourceDto, bool>> predicate = null,
            Func<IQueryable<XCategoryResourceDto>, IOrderedQueryable<XCategoryResourceDto>> orderBuilder = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await categoryProvider
                .QueryResources(
                    query: query,
                    predicate: predicate,
                    orderBuilder: orderBuilder,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Get All Resources as Async Enumerable ... 
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual IAsyncEnumerable<XCategoryResourceDto> GetAllCategoryResourcesAsAsyncEnumerable(
            CancellationToken cancellationToken = default
        )
        {
            //
            return categoryProvider
                .GetAllResourcesAsAsyncEnumerable(
                    cancellationToken: cancellationToken
            );
        }
        #endregion

        //
        #region SubCategory Provider ...
        /// <summary>
        /// Check Has Specified Locale or not ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<bool> SubCategoryHasLocale(
            int id,
            string language,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .HasLocale(
                    id: id,
                    language: language,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Load an Item by all of it's Related Translations ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>        
        public virtual async Task<XSubCategoryResourceDto> GetSubCategoryResource(
            int id,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .GetResource(
                    id: id,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Add Item for Specified Language ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> AddSubCategory(
            XSubCategoryDto item,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .Add(
                    item: item,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Add Item by it's Locales and Reference ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> AddSubCategoryResource(
            XSubCategoryResourceDto item,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .AddResource(
                    item: item,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Remove Item for Specified Language ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="language">if null, Remove All</param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> RemoveSubCategory(
            int id,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .Remove(
                    id: id,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Update an Item for Specified Language ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="item"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> UpdateSubCategory(
            int id,
            XSubCategoryDto item,
            string language = null,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .Update(
                    id: id,
                    item: item,
                    language: language,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Refresh a Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="userInfo"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> RefreshSubCategory(
            XSubCategoryResourceDto resource,
            string connectionId = null,
            XUserClaimsInfoDto userInfo = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .Refresh(
                    resource: resource,
                    userInfo: userInfo,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Get All Resources ...
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XSubCategoryResourceDto>> GetAllSubCategoryResources(
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .GetAllResources(
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Find One Resource ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XSubCategoryResourceDto> FindOneSubCategoryResource(
            Expression<Func<XSubCategoryResourceDto, bool>> predicate = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .FindOneResource(
                    predicate: predicate,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Find Many Resource ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XSubCategoryResourceDto>> FindManySubCategoryResource(
            Expression<Func<XSubCategoryResourceDto, bool>> predicate = null,
            Func<IQueryable<XSubCategoryResourceDto>, IOrderedQueryable<XSubCategoryResourceDto>> orderBuilder = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .FindManyResource(
                    predicate: predicate,
                    orderBuilder: orderBuilder,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Retrieve Resources by Query Pattern ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XQueryResult<XSubCategoryResourceDto>> QuerySubCategoryResources(
            XQuery query = null,
            Expression<Func<XSubCategoryResourceDto, bool>> predicate = null,
            Func<IQueryable<XSubCategoryResourceDto>, IOrderedQueryable<XSubCategoryResourceDto>> orderBuilder = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            return await subCategoryProvider
                .QueryResources(
                    query: query,
                    predicate: predicate,
                    orderBuilder: orderBuilder,
                    cancellationToken: cancellationToken
            );
        }

        /// <summary>
        /// Get All Resources as Async Enumerable ... 
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual IAsyncEnumerable<XSubCategoryResourceDto> GetAllSubCategoryResourcesAsAsyncEnumerable(
            CancellationToken cancellationToken = default
        )
        {
            //
            return subCategoryProvider
                .GetAllResourcesAsAsyncEnumerable(
                    cancellationToken: cancellationToken
            );
        }
        #endregion        
    }
}