Car, Polis & User repos + moved to dedicated folders

Repositories/Cars/CarRepository.cs

@@ -0,0 +1,48 @@
+using Microsoft.EntityFrameworkCore;
+using Renis.Database;
+using Renis.Database.Models;
+
+namespace Renis.Repositories;
+
+public class CarRepository(ApplicationContext db) : ICarRepository
+{
+    private readonly ApplicationContext _db = db;
+
+    public async Task<bool> AddCar(Car car)
+    {
+        _db.Cars.Add(car);
+        return await Save();
+    }
+
+    public async Task<bool> DeleteCar(Car car)
+    {
+        _db.Cars.Remove(car);
+        return await Save();
+    }
+
+    public async Task<Car?> GetCarById(long id)
+    {
+        return await _db.Cars.FirstOrDefaultAsync(x => x.Id == id);
+    }
+
+    public async Task<Car?> GetCarByNumber(string number)
+    {
+        return await _db.Cars.FirstOrDefaultAsync(x => x.Number == number);
+    }
+
+    public IQueryable<Car> GetCars()
+    {
+        return _db.Cars.AsQueryable();
+    }
+
+    public async Task<bool> Save()
+    {
+        return await _db.SaveChangesAsync() > 0;
+    }
+
+    public async Task<bool> UpdateCar(Car car)
+    {
+        _db.Cars.Update(car);
+        return await Save();
+    }
+}

Repositories/Cars/ICarRepository.cs

@@ -0,0 +1,14 @@
+using Renis.Database.Models;
+
+namespace Renis.Repositories;
+
+public interface ICarRepository
+{
+    public Task<bool> AddCar(Car car);
+    public Task<bool> UpdateCar(Car car);
+    public Task<bool> DeleteCar(Car car);
+    public Task<Car?> GetCarById(long id);
+    public Task<Car?> GetCarByNumber(string number);
+    public IQueryable<Car> GetCars();
+    public Task<bool> Save();
+}