Добавил возврат университета по id

PaydayBackend/Controllers/PublicController.cs

@@ -24,6 +24,21 @@ public class PublicController : ControllerBase
           return await _publicService.GetAllUniversity();
     }
     
+    /// <summary>
+    /// Получение университета по Id
+    /// </summary>
+    /// <response code="400">Университет не найден</response>
+    [HttpGet("university/{id}")]
+    public async Task<ActionResult<IEnumerable<UniversityDto>>> GetAllUniversityById(long id)
+    {
+        var result = await _publicService.GetAllUniversityById(id);
+          
+        if (result == null)
+            return BadRequest();
+          
+        return Ok(result);
+    }
+    
     /// <summary>
     /// Получение всех направлений университета
     /// </summary>

PaydayBackend/Services/IPublicService.cs

@@ -9,6 +9,7 @@ public interface IPublicService
     public Task<IEnumerable<UniversityDirectionDto>?> GetAllUniversityDirectionByUniversityId(long universityId);
     public Task<IEnumerable<LoanTerm>?> GetAllLoansByDirectionCost(long universityDirectionId);
     public Task<long> GetMinPlaceCostByUniversityId(long universityId);
+    public Task<UniversityDto?> GetAllUniversityById(long universityId);
 }
 
 public class PublicService : IPublicService
@@ -19,9 +20,7 @@ public class PublicService : IPublicService
     {
         _databaseContext = databaseContext;
     }
-    
-    
-    
+   
     public async Task<IEnumerable<UniversityDto>> GetAllUniversity()
     {
         var result = await _databaseContext.Universities.ToListAsync();
@@ -77,4 +76,13 @@ public class PublicService : IPublicService
             return 0;
         }
     }
+
+    public async Task<UniversityDto?> GetAllUniversityById(long universityId)
+    {
+        var university = await _databaseContext.Universities.Where(x => x.Id == universityId).FirstAsync();
+        if (university == null)
+            return null;
+
+        return new UniversityDto(university.Id, university.Name, university.FullName, university.ImageUrl);
+    }
 }