backend/ExamKing.Application/Services/StuanswerdetailService.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ExamKing.Application.Consts;
using ExamKing.Application.ErrorCodes;
using ExamKing.Application.Mappers;
using ExamKing.Core.Entites;
using Furion.DatabaseAccessor;
using Furion.DependencyInjection;
using Furion.FriendlyException;
using Mapster;
using Microsoft.EntityFrameworkCore;

namespace ExamKing.Application.Services
{
    /// <summary>
    /// 答题服务
    /// </summary>
    public class StuanswerdetailService : IStuanswerdetailService, ITransient
    {
        private readonly IRepository<TbStuanswerdetail> _answerRepository;
        private readonly IRepository<TbExamquestion> _examquestionRepository;
        private readonly ISelectService _selectService;
        private readonly IJudgeService _judgeService;

        /// <summary>
        /// 依赖注入
        /// </summary>
        public StuanswerdetailService(
            IRepository<TbStuanswerdetail> answerRepository,
            IRepository<TbExamquestion> examquestionRepository,
            ISelectService selectService,
            IJudgeService judgeService)
        {
            _answerRepository = answerRepository;
            _examquestionRepository = examquestionRepository;
            _selectService = selectService;
            _judgeService = judgeService;
        }

        /// <summary>
        /// 获取学生全部错题数量
        /// </summary>
        /// <param name="studentId">学生Id</param>
        /// <returns></returns>
        public async Task<int> GetWrongAnswerByStudent(int studentId)
        {
            var count = await _answerRepository
                .Where(x => x.StuId == studentId && x.Isright == "0")
                .CountAsync();
            return count;
        }

        /// <summary>
        /// 获取学生今日错题数
        /// </summary>
        /// <param name="studentId"></param>
        /// <returns></returns>
        public async Task<int> GetWrongAnswerTodayByStudent(int studentId)