using System.ComponentModel.DataAnnotations;
using FrameworkDAL.CustomCode.File;
using FrameworkDAL.DTO.File;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Validation;
using GB5Shared.ResponseStandard;

namespace FrameworkBLL.File
{
    public class FileBLL : IFileBLL
    {
        private readonly IFileDAL _FileDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public FileBLL(IFileDAL FileDAL, AutoNumber AutoNumber,IValidation validation)
        {
            _FileDAL = FileDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<FileDTO> GetFile(int FileId, LoginDTO LoginDTO)
        {
            try
            {
                return await _FileDAL.GetFile(FileId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(FileDTO.FileName, nameof(FileDTO.FileName));
                FileDTO.FileModifiedById = LoginDTO.UserId;
                FileDTO.FileModifiedOn = DateTime.UtcNow;
                FileDTO.TenantId = LoginDTO.ClientId;

                int InitialId = FileDTO.FileId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {

                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "FILE", LoginDTO);
                    FileDTO.FileId = AutoNumberDTO.StartNumber;
                    FileDTO.FileCreatedById = LoginDTO.UserId;
                    FileDTO.FileCreatedOn = DateTime.UtcNow;

                    await _FileDAL.SaveFile(FileDTO, LoginDTO);
                    return $"Details saved successfully with File Id {FileDTO.FileId}.";
                }
                else
                {
                    await _FileDAL.UpdateFile(FileDTO, LoginDTO);
                    return "Details updated successfully with File Id {FileDTO.FileId}.";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && FileDTO.FileId > 0)
                    await _AutoNumber.RollbackAutoNumber("FILE", FileDTO.FileId, LoginDTO);

                throw;
            }
        }


        public async Task<string> GetSelectListFile(CriteriaDTO criteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _FileDAL.GetSelectListFile(criteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
        public async Task<string> DeleteFile(int FileId, LoginDTO LoginDTO)
        {
            try
            {
                return await _FileDAL.DeleteFile(FileId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}