using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using FrameworkDAL.CustomCode.EntityRelation;
using FrameworkDAL.DTO.Entity;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.Response;
using GB5Shared.Validation;

namespace FrameworkBLL.EntityRelation
{
    public class EntityRelationBLL : IEntityRelationBLL
    {
        private readonly IEntityRelationDAL _EntityRelationDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public EntityRelationBLL(IEntityRelationDAL EntityRelationDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _EntityRelationDAL = EntityRelationDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetEntityRelation(int EntityRelationId, LoginDTO LoginDTO)
        {
            try
            {
                return await _EntityRelationDAL.GetEntityRelation(EntityRelationId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }



        public async Task<string> SaveEntityRelation(EntityRelationDTO EntityRelationDTO, LoginDTO LoginDTO)
        {
            if (EntityRelationDTO == null) throw new ArgumentNullException(nameof(EntityRelationDTO));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                await _Validation.NotEmpty(EntityRelationDTO.EntityRelationRelatedEntityCode, nameof(EntityRelationDTO.EntityRelationRelatedEntityCode));
                await _Validation.NotEmpty(EntityRelationDTO.EntityRelationName, nameof(EntityRelationDTO.EntityRelationName));

                int count = 1;
                if (EntityRelationDTO.EntityRelationId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "ENTITYRELATION", LoginDTO);
                    EntityRelationDTO.EntityRelationId = autoNumberDTO.StartNumber;

                    await _EntityRelationDAL.SaveEntityRelation(EntityRelationDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {EntityRelationDTO.EntityRelationId}";
                }
                else
                {
                    await _EntityRelationDAL.UpdateEntityRelation(EntityRelationDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {EntityRelationDTO.EntityRelationId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && EntityRelationDTO.EntityRelationId > 0)
                    await _AutoNumber.RollbackAutoNumber("ENTITYRELATION", EntityRelationDTO.EntityRelationId, LoginDTO);

                throw;
            }
        }


        public async Task<string> DeleteEntityRelation(int EntityRelationId, LoginDTO LoginDTO)
        {
            try
            {
                return await _EntityRelationDAL.DeleteEntityRelation(EntityRelationId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}