using System;
using System.Collections.Generic;
using System.Linq;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.Validation;
using GB5Shared.Query.Framework.Validation;
using GB5Shared.QueryExecutor;
using GB5Shared.Resource.Response;
using GB5Shared.Validation;
using Newtonsoft.Json;

namespace GB5Shared.ValidationCriteria
{
    public class ValidationAssignmentDAL : IValidationAssignmentDAL
    {
        private readonly IQueryExecutor _QueryExecutor;
        private readonly IValidation _Validation;

        public ValidationAssignmentDAL(IQueryExecutor queryExecutor, IValidation validation)
        {
            _QueryExecutor = queryExecutor;
            _Validation = validation;
        }

        public async Task<string> GetValidationAssignment(int validationAssignmentId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { ValidationAssignmentId = validationAssignmentId };
                var result = await _QueryExecutor.QuerySingleAsync<ValidationAssignmentDTO>(loginDTO, ValidationAssignmentQB.GET_VALIDATIONASSIGNMENT, parameters);
                return JsonConvert.SerializeObject(result);
            }
            catch (Exception) { throw; }
        }

        public async Task<int> SaveValidationAssignment(ValidationAssignmentDTO dto, LoginDTO loginDTO)
        {
            try
            {
                return await _QueryExecutor.ExecuteAsync(loginDTO, ValidationAssignmentQB.SAVE_VALIDATIONASSIGNMENT, dto);
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, ErrorResponse.SaveErrorMessage);
                throw new Exception(error);
            }
        }

        public async Task<int> UpdateValidationAssignment(ValidationAssignmentDTO dto, LoginDTO loginDTO)
        {
            try
            {
                return await _QueryExecutor.ExecuteAsync(loginDTO, ValidationAssignmentQB.UPDATE_VALIDATIONASSIGNMENT, dto);
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, ErrorResponse.UpdateErrorMessage);
                throw new Exception(error);
            }
        }

        public async Task<string> DeleteValidationAssignment(int validationAssignmentId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { ValidationAssignmentId = validationAssignmentId };
                int rowsAffected = await _QueryExecutor.ExecuteAsync(loginDTO, ValidationAssignmentQB.DELETE_VALIDATIONASSIGNMENT, parameters);
                return rowsAffected > 0 ? SuccessResponse.DeleteSuccessMessage : ErrorResponse.DeleteNotFoundMessage;
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, ErrorResponse.DeleteErrorMessage);
                throw new Exception(error);
            }
        }

        public async Task<List<ValidationAssignmentWithCriteriaDTO>> GetAssignmentsWithCriteriaForEntity(
            short entityType, int entityId, int entityStepId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { EntityType = entityType, EntityId = entityId, EntityStepId = entityStepId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<ValidationAssignmentWithCriteriaDTO>(loginDTO, ValidationAssignmentQB.GET_ASSIGNMENTS_WITH_CRITERIA_FOR_ENTITY, parameters);
                return result?.ToList() ?? new List<ValidationAssignmentWithCriteriaDTO>();
            }
            catch (Exception) { throw; }
        }

        public async Task<short?> GetEmployeeSkillLevel(int employeeId, int skillId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { EmployeeId = employeeId, SkillId = skillId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<short>(loginDTO, ValidationAssignmentQB.GET_EMPLOYEE_SKILL_LEVEL, parameters);
                return result?.Cast<short?>().FirstOrDefault();
            }
            catch (Exception) { throw; }
        }

        public async Task<DateTime?> GetLatestPassingQuizAttemptCompletedOn(int quizId, int employeeId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizId = quizId, EmployeeId = employeeId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<DateTime?>(loginDTO, ValidationAssignmentQB.GET_LATEST_PASSING_QUIZ_ATTEMPT, parameters);
                return result?.FirstOrDefault();
            }
            catch (Exception) { throw; }
        }

        public async Task<DateTime?> GetLatestPassingAssessmentAttemptCompletedOn(int assessmentId, int employeeId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { AssessmentId = assessmentId, EmployeeId = employeeId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<DateTime?>(loginDTO, ValidationAssignmentQB.GET_LATEST_PASSING_ASSESSMENT_ATTEMPT, parameters);
                return result?.FirstOrDefault();
            }
            catch (Exception) { throw; }
        }
    }
}