using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore.Query;
using xIdentityModels.Models;
using xModels.Base;
using xModels.Dtos;
using xPushService.Base;

namespace xPushService.Interfaces
{
    /// <summary>
    /// a Provided Service Used for Providing Data Based on Validations of Users ...
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    /// <typeparam name="TDto"></typeparam>
    /// <typeparam name="TKey"></typeparam>
    /// <typeparam name="THub"></typeparam>
    public interface IXBaseProvided<TEntity, TDto, TKey, THub>
    where TEntity : XBaseEntity<TKey>
    where TDto : XBaseEntityDto<TKey>
    where THub : XBaseDtoHub<TEntity, TDto, TKey>
    {
        /// <summary>
        /// Get Specified Item by ID ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<TDto> Get(
            TKey id,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Get All Exists Items ...
        /// </summary>
        /// <param name="orderBuilder"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<IEnumerable<TDto>> GetAll(
            Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBuilder = null,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Find an item by providing a Conditional Expression ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<TDto> FindOne(
            Expression<Func<TEntity, bool>> predicate,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Find a collection of Items by proving a Conditional Expression ...
        /// </summary>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<IEnumerable<TDto>> FindMany(
            Expression<Func<TEntity, bool>> predicate,
            Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBuilder = null,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Retrieve Items based on XQuery Pagination structure ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<XQueryResult<TDto>> Query(
            XQuery query,
            Expression<Func<TEntity, bool>> predicate = null,
            Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBuilder = null,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Retrieve Owned Items based on XQuery Pagination structure ...
        /// if supported ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="userInfo"></param>
        /// <param name="predicate"></param>
        /// <param name="orderBuilder"></param>
        /// <param name="includeBuilder"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<XQueryResult<TDto>> QueryOwned(
            XQuery query,
            XUserClaimsInfoDto userInfo = null,
            Expression<Func<TEntity, bool>> predicate = null,
            Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBuilder = null,
            Func<IQueryable<TEntity>, IIncludableQueryable<TEntity, object>> includeBuilder = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Add an item values ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="userInfo"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<TDto> Add(
            TDto item,
            XUserClaimsInfoDto userInfo = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Update an item values ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="item"></param>
        /// <param name="userInfo"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<TDto> Update(
            TKey id,
            TDto item,
            XUserClaimsInfoDto userInfo = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// remove an Item ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="userInfo"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<TDto> Remove(
            TKey id,
            XUserClaimsInfoDto userInfo = null,
            string connectionId = null,
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// count all exists Items ...
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<int> Count(
            CancellationToken cancellationToken = default
        );

        /// <summary>
        /// Check an Item exists or not ...
        /// </summary>
        /// <param name="id"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        Task<bool> IsExists(
            TKey id,
            CancellationToken cancellationToken = default
        );
    }
}