Created color service using ServiceBase

API/API.csproj

@@ -9,16 +9,12 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.1"/>
-        <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0-preview.3.24172.4" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0-preview.3.24172.4"/>
         <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0"/>
     </ItemGroup>
 
     <ItemGroup>
-      <Folder Include="Authentication\" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <ProjectReference Include="..\DAL\DAL.csproj" />
+        <ProjectReference Include="..\DAL\DAL.csproj"/>
     </ItemGroup>
 
 </Project>

API/Authentication/Interfaces/IColorAuthentication.cs

@@ -0,0 +1,9 @@
+using API.DTO.Base;
+using DAL.Models;
+
+namespace API.Authentication.Interfaces
+{
+	public interface IColorAuthentication : IGenericAuthentication<ColorDTO, Color>
+	{
+	}
+}

API/Authentication/Interfaces/IGenericAuthentication.cs

@@ -0,0 +1,13 @@
+using DAL.Models;
+
+namespace API.Authentication.Interfaces
+{
+	public interface IGenericAuthentication<T, TModel>
+	{
+		bool canGetAll(User user);
+		bool canGet(TModel model, User user);
+		bool canAdd(T item, User user);
+		bool canUpdate(TModel model, User user);
+		bool canDelete(TModel model, User user);
+	}
+}

API/DTO/Base/ColorDTO.cs

@@ -0,0 +1,26 @@
+using DAL.Models;
+
+namespace API.DTO.Base
+{
+	public class ColorDTO : IAdaptable<Color>
+	{
+		public ulong id { get; set; }
+		public byte red { get; set; }
+		public byte blue { get; set; }
+		public byte green { get; set; }
+		public string name { get; set; } = null!;
+		public DateTime updated { get; set; }
+		public ulong updater { get; set; }
+		public Color adaptToModel()
+		{
+			return new Color
+			{
+				id = id,
+				red = red,
+				blue = blue,
+				green = green,
+				name = name
+			};
+		}
+	}
+}

API/DTO/IAdaptable.cs

@@ -0,0 +1,7 @@
+namespace API.DTO
+{
+	public interface IAdaptable<TModel>
+	{
+		TModel adaptToModel();
+	}
+}

API/Program.cs

@@ -1,3 +1,4 @@
+using API.Services;
 using DAL.Contexts;
 using Microsoft.EntityFrameworkCore;
 using System.Reflection;
@@ -21,10 +22,9 @@ namespace API
 				options.IncludeXmlComments(xmlPath, true);
 			});
 
-			builder.Services.AddDbContext<SASGContext>(options =>
-			{
-				options.UseMySQL(builder.Configuration["connectionString"] ?? throw new InvalidOperationException("Connection String is null"));
-			});
+			builder.Services.AddDbContext<SASGContext>(options => { options.UseMySQL(builder.Configuration["connectionString"] ?? throw new InvalidOperationException("Connection String is null")); });
+
+			builder.Services.AddTransient<ColorService>();
 
 			WebApplication app = builder.Build();
 
@@ -44,4 +44,4 @@ namespace API
 			app.Run();
 		}
 	}
-}
+}

API/Services/ColorService.cs

@@ -0,0 +1,15 @@
+using API.Authentication.Interfaces;
+using API.DTO.Base;
+using DAL.Contexts;
+using DAL.Models;
+using DAL.Models.Audits;
+
+namespace API.Services
+{
+	public class ColorService : ServiceBase<ColorService, ColorDTO, Color, AuditColor, IColorAuthentication>
+	{
+		public ColorService(ILogger<ColorService> logger, SASGContext context, IColorAuthentication auth) : base(logger, context, auth)
+		{
+		}
+	}
+}

API/Services/Interfaces/IGenericService.cs

@@ -0,0 +1,16 @@
+using DAL.Models;
+using System.Linq.Expressions;
+
+namespace API.Services.Interfaces
+{
+	public interface IGenericService<in T, TModel, out TAudit>
+	{
+		TModel? get(ulong id, User user);
+		IEnumerable<TModel>? get(User user, Expression<Func<TModel, bool>>? whereClause = null);
+		TModel? getNoAuthentication(ulong id);
+		IEnumerable<TModel> getNoAuthentication(Expression<Func<TModel, bool>>? whereClause = null);
+		TModel? add(T item, User user);
+		TModel? update(TModel model, User user);
+		TAudit? delete(TModel model, User user);
+	}
+}

API/Services/ServiceBase.cs

@@ -0,0 +1,115 @@
+using API.Authentication.Interfaces;
+using API.DTO;
+using API.Services.Interfaces;
+using DAL.Contexts;
+using DAL.Models;
+using System.Linq.Expressions;
+
+namespace API.Services
+{
+	public class ServiceBase<TLoggerCategory, TDTO, TModel, TAudit, TAuthentication> : IGenericService<TDTO, TModel, TAudit>
+		where TAuthentication : IGenericAuthentication<TDTO, TModel>
+		where TModel : Model<TAudit>
+		where TAudit : class
+		where TDTO : IAdaptable<TModel>
+	{
+		private readonly TAuthentication _auth;
+		private readonly SASGContext _context;
+		private readonly ILogger<TLoggerCategory> _logger;
+
+		public ServiceBase(ILogger<TLoggerCategory> logger, SASGContext context, TAuthentication auth)
+		{
+			_logger = logger;
+			_context = context;
+			_auth = auth;
+		}
+
+		public TModel? get(ulong id, User user)
+		{
+			TModel? result = _context.Set<TModel>().Find(id);
+			if (result == null)
+				return null;
+
+			return _auth.canGet(result, user) ? result : null;
+		}
+
+		public IEnumerable<TModel>? get(User user, Expression<Func<TModel, bool>>? whereClause = null)
+		{
+			if (!_auth.canGetAll(user))
+				return null;
+
+			return whereClause != null ? _context.Set<TModel>().Where(whereClause) : _context.Set<TModel>();
+		}
+
+		public TModel? getNoAuthentication(ulong id)
+		{
+			return _context.Set<TModel>().Find(id);
+		}
+
+		public IEnumerable<TModel> getNoAuthentication(Expression<Func<TModel, bool>>? whereClause = null)
+		{
+			return whereClause != null ? _context.Set<TModel>().Where(whereClause) : _context.Set<TModel>();
+		}
+
+		public TModel? add(TDTO item, User user)
+		{
+			if (!_auth.canAdd(item, user))
+				return null;
+
+			TModel model = item.adaptToModel();
+
+			model.updater = user.id;
+			model.updated = DateTime.Now;
+			_context.Add(model);
+			_context.SaveChanges();
+
+			return model;
+		}
+
+		public TModel? update(TModel model, User user)
+		{
+			if (!_auth.canUpdate(model, user))
+				return null;
+
+			TModel? origModel = _context.Set<TModel>().Find(model.id);
+			if (origModel == null)
+				return null;
+
+			copyToAudit(origModel);
+
+			origModel.updated = DateTime.Now;
+			origModel.updater = user.id;
+
+			_context.SaveChanges();
+
+			return origModel;
+		}
+
+		public TAudit? delete(TModel model, User user)
+		{
+			if (!_auth.canDelete(model, user))
+				return null;
+
+			TModel? origModel = _context.Set<TModel>().Find(model.id);
+			if (origModel == null)
+				return null;
+
+			copyToAudit(origModel);
+
+			origModel.updated = DateTime.Now;
+			origModel.updater = user.id;
+
+			copyToAudit(origModel);
+
+			_context.Remove(origModel);
+			_context.SaveChanges();
+
+			return origModel.adaptToAudit();
+		}
+
+		private void copyToAudit(TModel model)
+		{
+			_context.Set<TAudit>().Add(model.adaptToAudit());
+		}
+	}
+}

DAL/Models/Audits/AuditColor.cs

@@ -7,11 +7,8 @@ namespace DAL.Models.Audits
 	[Index("id", Name = "audit_colors_colors_id_fk")]
 	[Table("audit_colors")]
 	[Keyless]
-	public class AuditColor
+	public class AuditColor : AuditModel<Color>
 	{
-		[Column("id")]
-		public ulong id { get; set; }
-
 		[Column("red")]
 		public byte red { get; set; }
 
@@ -24,12 +21,5 @@ namespace DAL.Models.Audits
 		[Column("name")]
 		[MaxLength(64)]
 		public string name { get; set; } = null!;
-
-		[Column("updated")]
-		[DataType("datetime")]
-		public DateTime updated { get; set; }
-
-		[Column("updater")]
-		public ulong updater { get; set; }
 	}
 }

DAL/Models/Audits/AuditModel.cs

@@ -0,0 +1,18 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace DAL.Models.Audits
+{
+	public abstract class AuditModel<TModel>
+	{
+		[Column("id")]
+		public ulong id { get; set; }
+
+		[Column("updated")]
+		[DataType("datetime")]
+		public DateTime updated { get; set; }
+
+		[Column("updater")]
+		public ulong updater { get; set; }
+	}
+}

DAL/Models/Color.cs

@@ -7,12 +7,8 @@ namespace DAL.Models
 {
 	[Table("colors")]
 	[Index("updater", Name = "colors_users_id_fk")]
-	public class Color
+	public class Color : Model<AuditColor>
 	{
-		[Key]
-		[Column("id")]
-		public ulong id { get; set; }
-
 		[Column("red")]
 		public byte red { get; set; }
 
@@ -26,15 +22,13 @@ namespace DAL.Models
 		[MaxLength(64)]
 		public string name { get; set; } = null!;
 
-		[Column("updated")]
-		[DataType("datetime")]
-		public DateTime updated { get; set; }
-
-		[Column("updater")]
-		public ulong updater { get; set; }
-
 		public User updaterRelation { get; set; } = null!;
 
 		public ICollection<AuditColor> audits { get; set; } = new List<AuditColor>();
+
+		public override AuditColor adaptToAudit()
+		{
+			throw new NotImplementedException();
+		}
 	}
 }

DAL/Models/Model.cs

@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace DAL.Models
+{
+	public abstract class Model<TAudit>
+	{
+		[Key]
+		[Column("id")]
+		public ulong id { get; set; }
+
+		[Column("updated")]
+		[DataType("datetime")]
+		public DateTime updated { get; set; }
+
+		[Column("updater")]
+		public ulong updater { get; set; }
+
+		public abstract TAudit adaptToAudit();
+	}
+}