deletions update

SurveyLib.Infrastructure.EFCore/Repositories/AnswerVariantsRepository.cs

@@ -0,0 +1,49 @@
+using Microsoft.EntityFrameworkCore;
+using SurveyLib.Core.Models;
+using SurveyLib.Core.Repositories;
+using SurveyLib.Infrastructure.EFCore.Data;
+
+namespace SurveyLib.Infrastructure.EFCore.Repositories;
+
+public class AnswerVariantsRepository : IAnswerVariantsRepository
+{
+    private readonly SurveyDbContext _context;
+
+    public AnswerVariantsRepository(SurveyDbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<AnswerVariant?> GetByIdAsync(int id)
+    {
+        return await _context.AnswerVariants.FindAsync(id);
+    }
+
+    public async Task<IEnumerable<AnswerVariant>> GetAllAsync()
+    {
+        return await _context.AnswerVariants.ToListAsync();
+    }
+
+    public async Task AddAsync(AnswerVariant entity)
+    {
+        await _context.AnswerVariants.AddAsync(entity);
+        await _context.SaveChangesAsync();
+    }
+
+    public async Task UpdateAsync(AnswerVariant entity)
+    {
+        _context.AnswerVariants.Update(entity);
+        await _context.SaveChangesAsync();
+    }
+
+    public async Task DeleteAsync(int id)
+    {
+        await _context.AnswerVariants.Where(av => av.Id == id).ExecuteDeleteAsync();
+        await _context.SaveChangesAsync();
+    }
+
+    public async Task<IEnumerable<AnswerVariant>> GetAnswerVariantsByQuestionIdAsync(int questionId)
+    {
+        return await _context.AnswerVariants.Where(av => av.QuestionId == questionId).ToListAsync();
+    }
+}