using System.ComponentModel.DataAnnotations;
using FrameworkDAL.CustomCode.Taxonomy;
using FrameworkDAL.DTO.Taxonomy;
using GB5Shared.DaprCache;
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;
using static GB5Shared.GB5Constant.Constant;

namespace FrameworkBLL.Taxonomy
{
    public class CourseBLL : ICourseBLL
    {
        private readonly ICourseDAL _CourseDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;
        private readonly KeyInvalidate _KeyInvalidate;

        public CourseBLL(ICourseDAL courseDAL, AutoNumber autoNumber, IValidation validation, KeyInvalidate keyInvalidate)
        {
            _CourseDAL = courseDAL;
            _AutoNumber = autoNumber;
            _Validation = validation;
            _KeyInvalidate = keyInvalidate;
        }

        public async Task<string> GetCourse(int courseId, LoginDTO loginDTO)
        {
            try { return await _CourseDAL.GetCourse(courseId, loginDTO); }
            catch (Exception) { throw; }
        }

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

        public async Task<string> SaveCourse(CourseDTO dto, LoginDTO loginDTO)
        {
            if (dto == null) throw new ArgumentNullException(nameof(dto));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                await _Validation.NotEmpty(dto.CourseCode, nameof(dto.CourseCode));
                await _Validation.NotEmpty(dto.CourseName, nameof(dto.CourseName));

                dto.TenantId = dto.IsShared == 1 ? -1 : loginDTO.ClientId;
                dto.ModifiedById = loginDTO.UserId;
                dto.ModifiedOn = DateTime.UtcNow;

                string message;
                if (dto.CourseId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(1, "COURSE", loginDTO);
                    dto.CourseId = autoNumberDTO.StartNumber;
                    dto.CreatedById = loginDTO.UserId;
                    dto.CreatedOn = DateTime.UtcNow;
                    await _CourseDAL.SaveCourse(dto, loginDTO);
                    message = $"{SuccessResponse.SaveSuccessMessage} {dto.CourseId}";
                }
                else
                {
                    await _CourseDAL.UpdateCourse(dto, loginDTO);
                    message = $"{SuccessResponse.UpdateSuccessMessage} {dto.CourseId}";
                }

                var cacheKey = new CacheKeyGeneration().KeyGeneration(dto.CourseId, EntityConstant.OBJECTCOURSE, CacheKeyLevel.CLIENT_LEVEL, loginDTO);
                await _KeyInvalidate.AllInvalidateCache(cacheKey);

                return message;
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && dto.CourseId > 0)
                    await _AutoNumber.RollbackAutoNumber("COURSE", dto.CourseId, loginDTO);
                throw;
            }
        }

        public async Task<string> DeleteCourse(int courseId, LoginDTO loginDTO)
        {
            try
            {
                var result = await _CourseDAL.DeleteCourse(courseId, loginDTO);

                var cacheKey = new CacheKeyGeneration().KeyGeneration(courseId, EntityConstant.OBJECTCOURSE, CacheKeyLevel.CLIENT_LEVEL, loginDTO);
                await _KeyInvalidate.AllInvalidateCache(cacheKey);

                return result;
            }
            catch (Exception) { throw; }
        }
    }
}