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


namespace FrameworkBLL.Project
{
    public class ProjectBLL : IProjectBLL
    {
        private readonly IProjectDAL _ProjectDAL;
        private readonly AutoNumber _autoNumber;
        private readonly IValidation _Validation;

        public ProjectBLL(IProjectDAL ProjectDAL, AutoNumber autoNumber, IValidation Validation)
        {
            _ProjectDAL = ProjectDAL;
            _autoNumber = autoNumber;
            _Validation = Validation;

        }

        public async Task<ProjectDTO> GetProject(int ProjectId, LoginDTO loginDTO)
        {
            try
            {
                return await _ProjectDAL.GetProject(ProjectId, loginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(ProjectDTO.ProjectCode, nameof(ProjectDTO.ProjectCode));
                await _Validation.NotEmpty(ProjectDTO.ProjectName, nameof(ProjectDTO.ProjectName));
                ProjectDTO.ProjectModifiedById = LoginDTO.UserId;
                ProjectDTO.ProjectModifiedOn = DateTime.UtcNow;

                if (ProjectDTO.ProjectId == 0)
                {
                    autoNumberDTO = await _autoNumber.GetAutoNumber(1, "PROJECT", LoginDTO);
                    ProjectDTO.ProjectId = autoNumberDTO.StartNumber;

                    ProjectDTO.ProjectCreatedById = LoginDTO.UserId;
                    ProjectDTO.ProjectCreatedOn = DateTime.UtcNow;

                    await _ProjectDAL.SaveProject(ProjectDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {ProjectDTO.ProjectId}";
                }
                else
                {
                    await _ProjectDAL.UpdateProject(ProjectDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {ProjectDTO.ProjectId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception ex)
            {
                if (autoNumberDTO != null && ProjectDTO.ProjectId > 0)
                    await _autoNumber.RollbackAutoNumber("PROJECT", ProjectDTO.ProjectId, LoginDTO);

                throw new Exception($"Failed: {ex.Message}", ex);
            }
        }

        public async Task<string> GetSelectListProject(CriteriaDTO criteriaDTO, LoginDTO loginDTO)
        {
            try
            {
                return await _ProjectDAL.GetSelectListProject(criteriaDTO, loginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> DeleteProject(int ProjectId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ProjectDAL.DeleteProject(ProjectId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

    }
}