using AutoMapper;
using Complex.Application.Services.Basic;
using Complex.Application.Utility;
using Complex.Common.Dto;
using Complex.Domain.Entities;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace Complex.Application.Complex
{
    public interface IUnitService
    {
        /// <summary>
        /// ثبت توسط مدیر ساختمان
        /// </summary>
        /// <param name="unitDto"></param>
        /// <returns></returns>
        ResultDto<Guid> InsertUnit(string adminUserId, UnitDto unitDto);
        /// <summary>
        /// ویرایش توسط مدیر ساختمان
        /// </summary>
        /// <param name="unitDto"></param>
        /// <returns></returns>
        ResultDto<bool> AdminEditUnit(string adminUserId, UnitDto unitDto);
        /// <summary>
        /// ویرایش توسط مالک
        /// </summary>
        /// <param name="unitDto"></param>
        /// <returns></returns>
        ResultDto<bool> OwnerEditUnit(string UserId, UnitDto unitDto);
        /// <summary>
        /// ویرایش توسط مستاجر
        /// </summary>
        /// <param name="unitDto"></param>
        /// <returns></returns>
        ResultDto<bool> TenantEditUnit(string UserId, UnitDto unitDto);
        ResultDto<List<UnitDto>> UnitList(string userId, UnitRequestList unitRequest);
    }
    public class UnitService : IUnitService
    {
        private readonly IComplexDBContext _complexDBContext;
        private readonly CostService _costService;
        private IMapper _mapper;

        public UnitService(IComplexDBContext complexDBContext, IMapper mapper, CostService costService)
        {
            _complexDBContext = complexDBContext;
            _costService = costService;
            _mapper = mapper;
        }
        public ResultDto<List<UnitDto>> UnitList(string userId, UnitRequestList unitRequest)
        {
            var today = PersianDate.GetToday();
            var IsUserInComplex = _complexDBContext.Units.Where(u => u.ComplexId == unitRequest.ComplexId
                && (u.OwnerId == userId || u.TenantId == userId))
                .Select(a => a.ComplexId)
                .Union(_complexDBContext.ComplexManagers.Where(cm => cm.ComplexId == unitRequest.ComplexId
                && string.Compare(cm.EndDate, today) >= 0
                && string.Compare(cm.StartDate, today) <= 0)
                .Where(u => u.ManagerMobileNumberId == userId)
                .Select(u => u.ComplexId));

            if (IsUserInComplex.Count() == 0)
                return new ResultDto<List<UnitDto>>
                {
                    Data = null,
                    IsSuccess = false,
                    Message = "درخواست نامعتبر"
                };

            var units = from u in _complexDBContext.Units.Include(u => u.Owner).Include(u => u.Tenant)
                        .Include(u => u.State)
                        where u.ComplexId == unitRequest.ComplexId
                        select u;
            if (unitRequest.Id.HasValue)
                units = units.Where(u => u.Id == unitRequest.Id);

            if (unitRequest.OwnerId.IsNotNullOrEmpty())
                units = units.Where(u => u.OwnerId == unitRequest.OwnerId);
            if (unitRequest.TenantId.IsNotNullOrEmpty())
                units = units.Where(u => u.TenantId == unitRequest.TenantId);

            var unitObjs = units.ToList().Select(u => new UnitDto
            {
                ComplexId = u.ComplexId,
                UnitName = u.UnitName,
                Id = u.Id,
                AreaMeter = u.AreaMeter,
                TenantId = u.TenantId,
                EmergencyTels = u.EmergencyTels,
                Floor = u.Floor,
                InsertTime = Convert.ToDateTime(_complexDBContext.Entry(u).Property("InsertTime").CurrentValue),
                UpdateTime = Convert.ToDateTime(_complexDBContext.Entry(u).Property("UpdateTime").CurrentValue),
                //InsertTime = u.InsertTime,
                IsActive = u.IsActive,
                ManagerDescription = u.ManagerDescription,
                ParkingAreaMeter = u.ParkingAreaMeter,
                PublicState = u.PublicState,
                StateTitle = u.StateId.HasValue ? u.State.Title : "",
                StateId = u.StateId,
                YardMeter = u.YardMeter,
                TenantNameFamily = u.TenantId != null ? u.Tenant.FirstName + " " + u.Tenant.LastName : "",
                OwnerNameFamily = u.OwnerId != null ? u.Owner.FirstName + " " + u.Owner.LastName : "",
                OwnerId = u.OwnerId,
            });
            try
            {
                return new ResultDto<List<UnitDto>>
                {
                    Data = unitObjs.ToList(),
                    IsSuccess = true,
                    //RowCount =
                };
            }
            catch (Exception ex)
            {
                return new ResultDto<List<UnitDto>>
                {
                    Message = ex.InnerException != null ? ex.InnerException.Message + Environment.NewLine + ex.InnerException.Data :
                    ex.Message + Environment.NewLine + ex.Data,
                    IsSuccess = false
                };
            }
        }

        public ResultDto<Guid> InsertUnit(string adminUserId, UnitDto unitDto)
        {
            var unit = _mapper.Map<Unit>(unitDto);
            var complexManager = _complexDBContext.ComplexManagers.Where(c => c.ComplexId == unit.ComplexId)
                .Select(cm => cm.ManagerMobileNumberId).ToList();
            if (!complexManager.Any(m => m == adminUserId))
                return new ResultDto<Guid>
                {
                    Message = "عدم دسترسی",
                    IsSuccess = false
                };
            //unit.InsertTime = DateTime.Now;
            _complexDBContext.Units.Add(unit);
            _complexDBContext.SaveChanges();
            //محاسبه شارژهای اون یونیت

            var nowDate = DateOnly.FromDateTime(DateTime.Now);

            //وقتی واحد تازه ثبت شده پس در مدیریت شارژ قابلیت ثبت اختصاصی برای خودش نداشته پس باید شارژ عمومی برایش تعریف شود
            // اگر خواست میتواند برایش به صورت اختصاصی هم ثبت کند که اون موقع برایش محاسبه مجدد خواهد شد
            var costCycleDto = _costService.CostCyclsList(unit.ComplexId, nowDate, nowDate, null).Data
                .FirstOrDefault(c => c.UnitIds == null);
            if (costCycleDto != null)
            {
                //var costCycle = new CostCycle
                //{
                //    Amount=costCycleDto.Amount,

                //};
                var costCycle=_mapper.Map<CostCycle>(costCycleDto);
                _costService.DefineUnitCharge(unit.Id, costCycle, true);
            }
            //
            return new ResultDto<Guid> { Data = unit.Id, IsSuccess = true, Message = "ثبت با موفقیت انجام شد" };
        }
        public ResultDto<bool> AdminEditUnit(string adminUserId, UnitDto unitDto)
        {
            var unit = _complexDBContext.Units.Include(u => u.Complex).ThenInclude(c => c.ComplexManagers).FirstOrDefault(u => u.Id == unitDto.Id);
            if (unit == null)
                return new ResultDto<bool> { Message = "مشکل در یافتن واحد", IsSuccess = false };

            var today = PersianDate.GetToday();
            var complex = unit.Complex;
            if (complex.ComplexManagers == null || !complex.ComplexManagers.Any(m => m.ManagerMobileNumberId == adminUserId
                && string.Compare(m.EndDate, today) >= 0))
                return new ResultDto<bool> { Message = "عدم دسترسی", IsSuccess = false };


            var oldUnitState = unit.PublicState;
            unit = _mapper.Map<Unit>(unitDto);
            unit.PublicState = oldUnitState;
            _complexDBContext.SaveChanges();


            //oldPayment را باید چه کار کرد؟؟؟؟!!!!!!!!!!!!!!!!!!!!!!!!!!

            return new ResultDto<bool> { Message = "ویرایش با موفقیت انجام شد", IsSuccess = true };
        }
        public ResultDto<bool> OwnerEditUnit(string UserId, UnitDto unitDto)
        {
            var unit = _complexDBContext.Units.FirstOrDefault(u => u.Id == unitDto.Id);
            if (unit == null)
                return new ResultDto<bool> { Message = "مشکل در یافتن واحد", IsSuccess = false };
            if (unit.OwnerId != UserId)
                return new ResultDto<bool> { Message = "عدم دسترسی", IsSuccess = false };

            unit.AreaMeter = unitDto.AreaMeter;
            unit.YardMeter = unitDto.YardMeter;
            unit.ParkingAreaMeter = unitDto.ParkingAreaMeter;
            unit.EmergencyTels = unitDto.EmergencyTels;
            unit.Floor = unitDto.Floor;
            unit.ParkingAreaMeter = unitDto.ParkingAreaMeter;
            unit.PublicState = unitDto.PublicState;
            unit.YardMeter = unitDto.YardMeter;


            _complexDBContext.SaveChanges();
            return new ResultDto<bool> { Message = "ویرایش با موفقیت انجام شد", IsSuccess = true };
        }
        public ResultDto<bool> TenantEditUnit(string UserId, UnitDto unitDto)
        {
            var unit = _complexDBContext.Units.FirstOrDefault(u => u.Id == unitDto.Id);
            if (unit == null)
                return new ResultDto<bool> { Message = "مشکل در یافتن واحد", IsSuccess = false };
            if (unit.TenantId != UserId)
                return new ResultDto<bool> { Message = "عدم دسترسی", IsSuccess = false };

            unit.PublicState = unitDto.PublicState;

            _complexDBContext.SaveChanges();
            return new ResultDto<bool> { Message = "ویرایش با موفقیت انجام شد", IsSuccess = true };
        }
    }

    public class UnitRequestList
    {
        public Guid? Id { set; get; }
        public Guid ComplexId { set; get; }
        public string? OwnerId { set; get; }
        public string? TenantId { set; get; }
    }

    public class UnitDto
    {
        public Guid Id { get; set; }
        public Guid ComplexId { set; get; }
        public string UnitName { set; get; }
        public ComplexEntity Complex { set; get; }
        /// <summary>
        /// ساکن
        /// </summary>
        public string? OwnerId { set; get; }
        /// <summary>
        /// شماره مستاجر
        /// </summary>
        public string? TenantId { set; get; }
        public bool IsActive { set; get; }
        /// <summary>
        /// متراژ کل
        /// </summary>
        public int? AreaMeter { set; get; }
        public string? EmergencyTels { set; get; }
        public int? ParkingAreaMeter { set; get; }
        /// <summary>
        /// متراژ حیاط
        /// </summary>
        public int? YardMeter { set; get; }
        public string? PublicState { set; get; }
        public int? StateId { set; get; }
        public string StateTitle { set; get; }
        public int? Floor { set; get; }
        //public string? UnitId { set; get; }
        public string? ManagerDescription { set; get; }
        //-----------------------------------------

        /// <summary>
        /// نام و نام خانوادگی مالک
        /// </summary>
        public string OwnerNameFamily { set; get; }
        /// <summary>
        /// نام و نام خانوادگی مستاجر
        /// </summary>
        public string TenantNameFamily { set; get; }
        //public string StateByManager { set; get; }
        public DateTime? InsertTime { get; set; }
        public DateTime? UpdateTime { get; set; }
    }
}