using System.Collections.Generic;
using System.Threading.Tasks;
using AutoMapper;
using GxPress.Repository.Interface;
using GxPress.Request.Department;
using GxPress.Result.Department;
using GxPress.Service.Interface;
using GxPress.Service.Interface.Department;
using GxPress.Repository.Interface.DepartmentUser;
using System.Linq;
using Datory;
using GxPress.EnumConst;

namespace GxPress.Service.Implement.Department
{

    /// <summary>
    /// 部门
    /// </summary>
    public partial class DepartmentService : IDepartmentService
    {

        private readonly IMapper _mapper;
        private readonly IDepartmentRepository _departmentRepository;
        private readonly IUserRepository _userRepository;
        private readonly IUserService _userService;
        private readonly IDepartmentUserRepository departmentUserRepository;
        public DepartmentService(IMapper mapper, IDepartmentRepository departmentRepository,
            IUserRepository userRepository, IUserService userService, IDepartmentUserRepository departmentUserRepository)
        {
            _departmentRepository = departmentRepository;
            _userRepository = userRepository;
            _userService = userService;
            _mapper = mapper;
            this.departmentUserRepository = departmentUserRepository;
        }
        /// <summary>
        /// 根据部门ID获取成员以及下级部门
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<DepartmentUserResult> GetDepartmentUserResultAsync(DepartmentUserRequest request)
        {
            var result = await _departmentRepository.GetDepartmentUserResultAsync(request);
            if (result.Departments != null)
            {
                foreach (var item in result.Departments)
                {
                    item.TypeId = UserlinkConst.Work.GetHashCode();
                    //获取部门
                    var departments = new List<DepartmentResult>();
                    await _departmentRepository.GetDepartmentById(item.Id, departments);
                    var userIds = await departmentUserRepository.GetUserIdsByDepartmentIdsAsync(departments.Select(n => n.Id));
                    item.UserCount = await _userRepository.CountAsync(Q.WhereIn(nameof(Entity.User.Id), userIds));
                }

            }
            return result;
        }

        public async Task<IEnumerable<Entity.Department>> GetUserInDepartmentAsync(int userId)
        {
            //获取用户所在部门
            var departmentIds = await departmentUserRepository.GetDepartmentIdsAsync(userId);
            departmentIds = departmentIds.Distinct();
            //
            var departmentIdsList = new List<int>();
            var result = new DepartmentUserInsResult();
            result.Result = new List<DepartmentUserInResult>();
            var allDepartment = await _departmentRepository.GetAllAsync(Q.Where(nameof(Entity.Department.Id), ">", 0));
            foreach (var departmentId in departmentIds)
            {
                result.Result.Add(new DepartmentUserInResult
                {
                    DepartmentId = departmentId,
                    Item = await _departmentRepository.GetDepartmentByPid(departmentId, new List<Entity.Department>(), allDepartment.ToList())
                });
            }
            if (departmentIds.Count() == 1)
                departmentIdsList.AddRange(departmentIds);
            for (int i = 0; i < result.Result.Count; i++)
            {
                for (int k = i + 1; k < result.Result.Count; k++)
                {
                    if (result.Result[i].Item.Any(n => n.Id == result.Result[k].DepartmentId))
                    {
                        departmentIdsList.Add(result.Result[i].DepartmentId);
                    }
                    else if (result.Result[k].Item.Any(n => n.Id == result.Result[i].DepartmentId))
                    {
                        departmentIdsList.Add(result.Result[k].DepartmentId);
                        result.Result[i].DepartmentId = result.Result[k].DepartmentId;
                        result.Result[i].Item = result.Result[k].Item;
                    }
                    else
                    {
                        //departmentIdsList.Add(result.Result[i].DepartmentId);
                        departmentIdsList.Add(result.Result[k].DepartmentId);
                    }
                }
            }
            departmentIdsList = await GetDepartmentDistinct(allDepartment.ToList(), departmentIdsList.Distinct().ToList());
            return await _departmentRepository.GetAllAsync(Q.WhereIn(nameof(Entity.Department.Id), departmentIdsList));
            //
        }

        public async Task<List<int>> GetDepartmentDistinct(List<Entity.Department> allDepartment, List<int> departmentIds)
        {
            //
            var departmentIdsList = new List<int>();
            var result = new DepartmentUserInsResult();
            result.Result = new List<DepartmentUserInResult>();
            foreach (var departmentId in departmentIds)
            {
                result.Result.Add(new DepartmentUserInResult
                {
                    DepartmentId = departmentId,
                    Item = await _departmentRepository.GetDepartmentByPid(departmentId, new List<Entity.Department>(), allDepartment.ToList())
                });
            }
            if (departmentIds.Count() == 1)
                departmentIdsList.AddRange(departmentIds);
            for (int i = 0; i < result.Result.Count; i++)
            {
                for (int k = i + 1; k < result.Result.Count; k++)
                {
                    if (result.Result[i].Item.Any(n => n.Id == result.Result[k].DepartmentId))
                    {
                        departmentIdsList.Add(result.Result[i].DepartmentId);
                    }
                    else if (result.Result[k].Item.Any(n => n.Id == result.Result[i].DepartmentId))
                    {
                        departmentIdsList.Add(result.Result[k].DepartmentId);
                        result.Result[i].DepartmentId = result.Result[k].DepartmentId;
                        result.Result[i].Item = result.Result[k].Item;
                    }
                    else
                    {
                        //departmentIdsList.Add(result.Result[i].DepartmentId);
                        departmentIdsList.Add(result.Result[i].DepartmentId);
                    }
                }
            }
            return departmentIdsList;
        }
    }
}