initial commit

CityInfo.API/Models/CityDataStore.cs

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+namespace CityInfo.API.Models
+{
+    public class CityDataStore
+    {
+        public List<CityDto> Cities { get; set; }
+
+        public CityDataStore()
+        {
+            Cities = new List<CityDto>()
+            {
+                new CityDto()
+                {
+                    Id = 1,
+                    Name = "New York City",
+                    Description = "The one with that big park.",
+                    PointsOfInterest = new List<PointOfInterestDto>()
+                    {
+                        new PointOfInterestDto()
+                        {
+                            Id = 1,
+                            Name = "Central Park",
+                            Description = "The most visited urban park in the United States."
+                        },
+                        new PointOfInterestDto()
+                        {
+                            Id = 2,
+                            Name = "Empire State Building",
+                            Description = "A 102 Story skyscrapper located in Midtown Manathan."
+                        }
+                    }
+                },
+                new CityDto()
+                {
+                    Id = 2,
+                    Name = "Antwerp",
+                    Description = "The one with the cathedral that was never really finished.",
+                    PointsOfInterest = new List<PointOfInterestDto>()
+                    {
+                        new PointOfInterestDto()
+                        {
+                            Id = 3,
+                            Name = "Antwerp Cathedral",
+                            Description = "a beautiful Cathedral"
+                        },
+                        new PointOfInterestDto()
+                        {
+                            Id = 4,
+                            Name = "Antwerp central station",
+                            Description = "A train station"
+                        }
+                    }
+                },
+                new CityDto()
+                {
+                    Id = 3,
+                    Name = "Paris",
+                    Description = "The one with that big tower.",
+                    PointsOfInterest = new List<PointOfInterestDto>()
+                    {
+                        new PointOfInterestDto()
+                        {
+                            Id = 5,
+                            Name = "Eiffel Tower",
+                            Description = "A big tower."
+                        },
+                        new PointOfInterestDto()
+                        {
+                            Id = 6,
+                            Name = "The Louvre",
+                            Description = "A Museum."
+                        }
+                    }
+                },
+            };
+        }
+    }
+}

CityInfo.API/Models/CityDto.cs

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+namespace CityInfo.API.Models
+{
+    public class CityDto
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public string? Description { get; set; }
+        public int NumberOfPointsOfInterest { 
+            get 
+            {
+                return PointsOfInterest.Count;
+            }
+          }
+        public ICollection<PointOfInterestDto> PointsOfInterest { get; set; } = new List<PointOfInterestDto>();
+    }
+}

CityInfo.API/Models/CityWithoutPointsOfInterestDto.cs

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+namespace CityInfo.API.Models
+{
+    public class CityWithoutPointsOfInterestDto
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public string? Description { get; set; }
+    }
+}

CityInfo.API/Models/PointOfInterestDto.cs

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+namespace CityInfo.API.Models
+{
+    public class PointOfInterestDto
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public string? Description { get; set; }
+    }
+}

CityInfo.API/Models/PointOfInterestForCreationDto.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace CityInfo.API.Models
+{
+    public class PointOfInterestForCreationDto
+    {
+        [Required(ErrorMessage = "You should provide a name value.")]
+        [MaxLength(50)]
+        public string Name { get; set; } = string.Empty;
+
+        [MaxLength(200)]
+        public string? Description { get; set; }
+    }
+}

CityInfo.API/Models/PointOfInterestForUpdateDto.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace CityInfo.API.Models
+{
+    public class PointOfInterestForUpdateDto
+    {
+        [Required(ErrorMessage = "You should provide a name value.")]
+        [MaxLength(50)]
+        public string Name { get; set; } = string.Empty;
+
+        [MaxLength(200)]
+        public string? Description { get; set; }
+    }
+}