initial commit

CityInfo.API/Services/ICityInfoRepository.cs

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+using CityInfo.API.Entities;
+
+namespace CityInfo.API.Services
+{
+    public interface ICityInfoRepository
+    {
+        Task<IEnumerable<City>> GetCitiesAsync();
+        Task<(IEnumerable<City>, PaginationMetadata)> GetCitiesAsync(string? name, string? searchQuery, int pageNumber, int pageSize);
+        Task<City?> GetCityAsync(int cityId, bool includePointsOfinterest);
+        Task<bool> CityExistAsync(int cityId);
+        Task<IEnumerable<PointOfInterest>> GetPointsOfinterestForCityAsync(int cityId);
+        Task<PointOfInterest?> GetPointOfInterestForCityAsync(int cityId, int pointOfInterestId);
+        Task CreatePointOfInterestForCityAsync(int cityId, PointOfInterest pointOfInterest);
+        void DeletePointOfInterest(PointOfInterest pointOfInterest);
+        Task<bool> CityNameMatchesCityId(string? cityName, int cityId);
+        Task<bool> SaveChangesAsync();
+    }
+}