adapt repository features to services needs

SurveyLib.Core/Repositories/IAnswerRepository.cs

@@ -5,4 +5,6 @@ namespace SurveyLib.Core.Repositories;
 public interface IAnswerRepository : IGenericRepository<Answer>
 {
     Task DeleteAsync(int questionId, int completionId);
+    Task<IEnumerable<Answer>> GetAnswersByCompletionIdAsync(int completionId);
+    Task<IEnumerable<Answer>> GetAnswersByQuestionIdAsync(int questionId);
 }

SurveyLib.Core/Repositories/ICompletionRepository.cs

@@ -4,5 +4,5 @@ namespace SurveyLib.Core.Repositories;
 
 public interface ICompletionRepository : IGenericRepository<Completion>
 {
-    
+    Task<IEnumerable<Completion>> GetCompletionsBySurveyIdAsync(int surveyId);
 }

SurveyLib.Infrastructure.EFCore/Repositories/AnswerRepository.cs

@@ -47,4 +47,14 @@ public class AnswerRepository : IAnswerRepository
             .ExecuteDeleteAsync();
         await _context.SaveChangesAsync();
     }
+
+    public async Task<IEnumerable<Answer>> GetAnswersByCompletionIdAsync(int completionId)
+    {
+        return await _context.Answers.Where(a => a.CompletionId == completionId).ToListAsync();
+    }
+
+    public async Task<IEnumerable<Answer>> GetAnswersByQuestionIdAsync(int questionId)
+    {
+        return await _context.Answers.Where(a => a.QuestionId == questionId).ToListAsync();
+    }
 }

SurveyLib.Infrastructure.EFCore/Repositories/CompletionRepository.cs

@@ -41,4 +41,9 @@ public class CompletionRepository : ICompletionRepository
         await _context.Completions.Where(c => c.Id == id).ExecuteDeleteAsync();
         await _context.SaveChangesAsync();
     }
+
+    public async Task<IEnumerable<Completion>> GetCompletionsBySurveyIdAsync(int surveyId)
+    {
+        return await _context.Completions.Where(c => c.SurveyId == surveyId).ToListAsync();
+    }
 }