using Microsoft.EntityFrameworkCore;
using MTWorkHR.Application.Identity;
using MTWorkHR.Application.Mapper;
using MTWorkHR.Application.Models;
using MTWorkHR.Core.Global;
using MTWorkHR.Core.UnitOfWork;
using MTWorkHR.Application.Services.Interfaces;
using MTWorkHR.Core.Entities;
using System.Linq.Dynamic.Core;
using Microsoft.AspNetCore.Identity;
using MTWorkHR.Infrastructure.Entities;

namespace MTWorkHR.Application.Services
{
    public class ContractService : BaseService<Contract, ContractDto, ContractDto>, IContractService
    {
        private readonly IUnitOfWork _unitOfWork;
        private readonly IUserService _userService;
        private readonly GlobalInfo _globalInfo;

        public ContractService(IUnitOfWork unitOfWork, IUserService userService, GlobalInfo globalInfo) : base(unitOfWork)
        {
            _unitOfWork = unitOfWork;
            _userService = userService;
            _globalInfo = globalInfo;
        }

        public override async Task<ContractDto> GetById(long id)
        {
            var entity = await _unitOfWork.Contract.GetByIdWithAllChildren(id);
            var response = MapperObject.Mapper.Map<ContractDto>(entity);
            return response;
        }
       
        public override async Task<ContractDto> Create(ContractDto input)
        {
            var entity = MapperObject.Mapper.Map<Contract>(input);

            if (entity is null)
            {
                throw new AppException(ExceptionEnum.MapperIssue);
            }

            var team = await _unitOfWork.Contract.AddAsync(entity);
            await _unitOfWork.CompleteAsync();

            var response = MapperObject.Mapper.Map<ContractDto>(team);
            return response;
        }

        //public override async Task<ContractDto> Update(ContractDto input)
        //{
        //    var entity = MapperObject.Mapper.Map<Contract>(input);

        //    if (entity is null)
        //    {
        //        throw new AppException(ExceptionEnum.MapperIssue);
        //    }

        //    var contract = await _unitOfWork.Contract.upd(entity);
        //    await _unitOfWork.CompleteAsync();


        //    var response = Mapper.MapperObject.Mapper.Map<ContractDto>(entity);
        //    return response;
        //}
        public async Task<PagingResultDto<ContractDto>> GetAll(ContractPagingInputDto PagingInputDto)
        {
            var res = await _unitOfWork.Contract.GetAllWithChildrenAsync();
            var query = res.Item1;

            if (_globalInfo.UserType != UserTypeEnum.Business)
            {
               // query = query.Where(m => m.ContractUsers != null && m.ContractUsers.Count > 0 && m.ContractUsers.Count(u=> u.AssignedUserId == _globalInfo.UserId) > 0);

            }
            if (PagingInputDto.Filter != null)
            {
                var filter = PagingInputDto.Filter;
                query = query.Where(u => u.JobDescription.Contains(filter));
            }

            if (PagingInputDto.ContractStatusId != null)
            {
                query = query.Where(u => (int)u.ContractStatusId == PagingInputDto.ContractStatusId);
            }
            if (PagingInputDto.ContractTypeId != null)
            {
                query = query.Where(u => (int)u.ContractTypeId == PagingInputDto.ContractTypeId);
            }

            var order = query.OrderBy(PagingInputDto.OrderByField + " " + PagingInputDto.OrderType);

            var page = order.Skip((PagingInputDto.PageNumber * PagingInputDto.PageSize) - PagingInputDto.PageSize).Take(PagingInputDto.PageSize);

            var total = await query.CountAsync();

            var list = MapperObject.Mapper
                .Map<IList<ContractDto>>(await page.ToListAsync());

            foreach (var item in list)
            {
                if (item.UserId != null)
                {
                    var user = await _userService.GetUserWithAttachmentById(item.UserId);
                    if (user != null)
                    {
                        item.EmployeeName = user.FirstName + " " + user.LastName;
                        item.EmployeeEmail = user.Email;
                    }
                }
            }
            var response = new PagingResultDto<ContractDto>
            {
                Result = list,
                Total = total
            };

            return response;
        }

        public async Task<bool> ChangeStatus(long contractId, int statusId)
        {
            var entity = await _unitOfWork.Contract.GetByIdAsync(contractId);
            if (entity == null)
                throw new AppException(ExceptionEnum.RecordNotExist);
            entity.ContractStatusId = statusId;
            bool result = true;
            if (statusId == (int)ContractStatusEnum.Approved)
            {
                var updatedSuccess = await _userService.Update(entity.UserId, entity.CompanyId);
                if (!updatedSuccess) { result = false; }
            }
            await _unitOfWork.CompleteAsync();
            return result;
        }



    }
}