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

namespace TMSDAL.CustomCode.Quiz
{
    public class QuizAttemptDAL : IQuizAttemptDAL
    {
        private readonly IQueryExecutor _QueryExecutor;
        private readonly IValidation _Validation;

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

        public async Task<string> GetQuizAttempt(int quizAttemptId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizAttemptId = quizAttemptId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QuerySingleAsync<QuizAttemptDTO>(loginDTO, QuizAttemptQB.GET_QUIZATTEMPT, parameters);
                return JsonConvert.SerializeObject(result);
            }
            catch (Exception) { throw; }
        }

        public async Task<List<QuizAttemptListItemDTO>> GetQuizAttemptFullList(LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<QuizAttemptListItemDTO>(loginDTO, QuizAttemptQB.GET_QUIZATTEMPT_FULL_LIST, parameters);
                return result?.ToList() ?? new List<QuizAttemptListItemDTO>();
            }
            catch (Exception) { throw; }
        }

        public async Task<List<QuizAttemptListItemDTO>> GetQuizAttemptListByEmployee(int employeeId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { EmployeeId = employeeId, TenantId = loginDTO.ClientId };
                var result = await _QueryExecutor.QueryAsync<QuizAttemptListItemDTO>(loginDTO, QuizAttemptQB.GET_QUIZATTEMPT_LIST_BY_EMPLOYEE, parameters);
                return result?.ToList() ?? new List<QuizAttemptListItemDTO>();
            }
            catch (Exception) { throw; }
        }

        public async Task<int> GetQuizAttemptCount(int quizId, int employeeId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizId = quizId, EmployeeId = employeeId };
                return await _QueryExecutor.ExecuteScalarAsync<int>(loginDTO, QuizAttemptQB.GET_QUIZATTEMPT_COUNT, parameters);
            }
            catch (Exception) { throw; }
        }

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

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

        public async Task<string> DeleteQuizAttempt(int quizAttemptId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizAttemptId = quizAttemptId, TenantId = loginDTO.ClientId };
                int rowsAffected = await _QueryExecutor.ExecuteAsync(loginDTO, QuizAttemptQB.DELETE_QUIZATTEMPT, 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<QuizAttemptResponseDTO>> GetResponsesByAttempt(int quizAttemptId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizAttemptId = quizAttemptId };
                var result = await _QueryExecutor.QueryAsync<QuizAttemptResponseDTO>(loginDTO, QuizAttemptQB.GET_RESPONSES_BY_ATTEMPT, parameters);
                return result?.ToList() ?? new List<QuizAttemptResponseDTO>();
            }
            catch (Exception) { throw; }
        }

        public async Task SaveQuizAttemptResponse(QuizAttemptResponseDTO dto, LoginDTO loginDTO)
        {
            try
            {
                await _QueryExecutor.ExecuteAsync(loginDTO, QuizAttemptQB.SAVE_QUIZATTEMPTRESPONSE, dto);
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, ErrorResponse.SaveErrorMessage);
                throw new Exception(error);
            }
        }

        public async Task UpdateQuizAttemptResponse(QuizAttemptResponseDTO dto, LoginDTO loginDTO)
        {
            try
            {
                await _QueryExecutor.ExecuteAsync(loginDTO, QuizAttemptQB.UPDATE_QUIZATTEMPTRESPONSE, dto);
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, ErrorResponse.UpdateErrorMessage);
                throw new Exception(error);
            }
        }

        public async Task<List<QuestionBankItemDTO>> GetRandomQuestionsByTopic(int topicId, int questionCount, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { TenantId = loginDTO.ClientId, TopicId = topicId, QuestionCount = questionCount };
                var result = await _QueryExecutor.QueryAsync<QuestionBankItemDTO>(loginDTO, QuizAttemptQB.GET_RANDOM_QUESTIONS_BY_TOPIC, parameters);
                return result?.ToList() ?? new List<QuestionBankItemDTO>();
            }
            catch (Exception) { throw; }
        }

        public async Task<QuizAttemptProofDTO?> GetLatestPassingAttempt(int quizId, int employeeId, LoginDTO loginDTO)
        {
            try
            {
                var parameters = new { QuizId = quizId, EmployeeId = employeeId };
                var result = await _QueryExecutor.QueryAsync<QuizAttemptProofDTO>(loginDTO, QuizAttemptQB.GET_LATEST_PASSING_ATTEMPT, parameters);
                return result?.FirstOrDefault();
            }
            catch (Exception) { throw; }
        }
    }
}