API: Starting to merge id/slug routes using a new Identifier

src/Kyoo.Abstractions/Models/Utils/Identifier.cs

@@ -0,0 +1,112 @@
+// Kyoo - A portable and vast media library solution.
+// Copyright (c) Kyoo.
+//
+// See AUTHORS.md and LICENSE file in the project root for full license information.
+//
+// Kyoo is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// Kyoo is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
+
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using JetBrains.Annotations;
+
+namespace Kyoo.Abstractions.Models.Utils
+{
+	/// <summary>
+	/// A class that represent a resource. It is made to be used as a parameter in a query and not used somewhere else
+	/// on the application.
+	/// This class allow routes to be used via ether IDs or Slugs, this is suitable for every <see cref="IResource"/>.
+	/// </summary>
+	[TypeConverter(typeof(IdentifierConvertor))]
+	public class Identifier
+	{
+		/// <summary>
+		/// The ID of the resource or null if the slug is specified.
+		/// </summary>
+		private readonly int? _id;
+
+		/// <summary>
+		/// The slug of the resource or null if the id is specified.
+		/// </summary>
+		private readonly string _slug;
+
+		/// <summary>
+		/// Create a new <see cref="Identifier"/> for the given id.
+		/// </summary>
+		/// <param name="id">The id of the resource.</param>
+		public Identifier(int id)
+		{
+			_id = id;
+		}
+
+		/// <summary>
+		/// Create a new <see cref="Identifier"/> for the given slug.
+		/// </summary>
+		/// <param name="slug">The slug of the resource.</param>
+		public Identifier([NotNull] string slug)
+		{
+			if (slug == null)
+				throw new ArgumentNullException(nameof(slug));
+			_slug = slug;
+		}
+
+		/// <summary>
+		/// Pattern match out of the identifier to a resource.
+		/// </summary>
+		/// <param name="idFunc">The function to match the ID to a type <typeparamref name="T"/>.</param>
+		/// <param name="slugFunc">The function to match the slug to a type <typeparamref name="T"/>.</param>
+		/// <typeparam name="T">The return type that will be converted to from an ID or a slug.</typeparam>
+		/// <returns>
+		/// The result of the <paramref name="idFunc"/> or <paramref name="slugFunc"/> depending on the pattern.
+		/// </returns>
+		/// <example>
+		/// Example usage:
+		/// <code lang="csharp">
+		/// T ret = await identifier.Match(
+		///      id => _repository.GetOrDefault(id),
+		///      slug => _repository.GetOrDefault(slug)
+		/// );
+		/// </code>
+		/// </example>
+		public T Match<T>(Func<int, T> idFunc, Func<string, T> slugFunc)
+		{
+			return _id.HasValue
+				? idFunc(_id.Value)
+				: slugFunc(_slug);
+		}
+
+		public class IdentifierConvertor : TypeConverter
+		{
+			/// <inheritdoc />
+			public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
+			{
+				if (sourceType == typeof(int) || sourceType == typeof(string))
+					return true;
+				return base.CanConvertFrom(context, sourceType);
+			}
+
+			/// <inheritdoc />
+			public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
+			{
+				if (value is int id)
+					return new Identifier(id);
+				if (value is not string slug)
+					return base.ConvertFrom(context, culture, value);
+				return int.TryParse(slug, out id)
+					? new Identifier(id)
+					: new Identifier(slug);
+			}
+		}
+	}
+}

src/Kyoo.Core/Controllers/IdentifierRouteConstraint.cs

@@ -0,0 +1,40 @@
+// Kyoo - A portable and vast media library solution.
+// Copyright (c) Kyoo.
+//
+// See AUTHORS.md and LICENSE file in the project root for full license information.
+//
+// Kyoo is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// Kyoo is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
+
+using Kyoo.Abstractions.Models.Utils;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+
+namespace Kyoo.Core.Controllers
+{
+	/// <summary>
+	/// The route constraint that goes with the <see cref="Identifier"/>.
+	/// </summary>
+	public class IdentifierRouteConstraint : IRouteConstraint
+	{
+		/// <inheritdoc />
+		public bool Match(HttpContext httpContext,
+			IRouter route,
+			string routeKey,
+			RouteValueDictionary values,
+			RouteDirection routeDirection)
+		{
+			return values.ContainsKey(routeKey);
+		}
+	}
+}

src/Kyoo.Core/CoreModule.cs

@@ -33,6 +33,7 @@ using Kyoo.Core.Tasks;
 using Kyoo.Database;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Routing;
 using Microsoft.AspNetCore.StaticFiles;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -145,6 +146,11 @@ namespace Kyoo.Core
 				.AddDataAnnotations()
 				.AddControllersAsServices()
 				.AddApiExplorer()
+				.AddNewtonsoftJson(x =>
+				{
+					x.SerializerSettings.ContractResolver = new JsonPropertyIgnorer(publicUrl);
+					x.SerializerSettings.Converters.Add(new PeopleRoleConverter());
+				})
 				.ConfigureApiBehaviorOptions(options =>
 				{
 					options.SuppressMapClientErrors = true;
@@ -157,11 +163,10 @@ namespace Kyoo.Core
 						return new BadRequestObjectResult(new RequestError(errors));
 					};
 				});
-			services.AddControllers()
-				.AddNewtonsoftJson(x =>
+
+			services.Configure<RouteOptions>(x =>
 			{
-					x.SerializerSettings.ContractResolver = new JsonPropertyIgnorer(publicUrl);
-					x.SerializerSettings.Converters.Add(new PeopleRoleConverter());
+				x.ConstraintMap.Add("id", typeof(IdentifierRouteConstraint));
 			});
 
 			services.AddResponseCompression(x =>

src/Kyoo.Core/Views/Helper/CrudApi.cs

@@ -85,42 +85,24 @@ namespace Kyoo.Core.Api
 		}
 
 		/// <summary>
-		/// Get by ID
+		/// Get item
 		/// </summary>
 		/// <remarks>
-		/// Get a specific resource via it's ID.
+		/// Get a specific resource via it's ID or it's slug.
 		/// </remarks>
-		/// <param name="id">The ID of the resource to retrieve.</param>
+		/// <param name="identifier">The ID or slug of the resource to retrieve.</param>
 		/// <returns>The retrieved resource.</returns>
-		/// <response code="404">A resource with the given ID does not exist.</response>
-		[HttpGet("{id:int}")]
+		/// <response code="404">A resource with the given ID or slug does not exist.</response>
+		[HttpGet("{identifier:id}")]
 		[PartialPermission(Kind.Read)]
 		[ProducesResponseType(StatusCodes.Status200OK)]
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
-		public async Task<ActionResult<T>> Get(int id)
+		public async Task<ActionResult<T>> Get(Identifier identifier)
 		{
-			T ret = await _repository.GetOrDefault(id);
-			if (ret == null)
-				return NotFound();
-			return ret;
-		}
-
-		/// <summary>
-		/// Get by slug
-		/// </summary>
-		/// <remarks>
-		/// Get a specific resource via it's slug (a unique, human readable identifier).
-		/// </remarks>
-		/// <param name="slug">The slug of the resource to retrieve.</param>
-		/// <returns>The retrieved resource.</returns>
-		/// <response code="404">A resource with the given ID does not exist.</response>
-		[HttpGet("{slug}")]
-		[PartialPermission(Kind.Read)]
-		[ProducesResponseType(StatusCodes.Status200OK)]
-		[ProducesResponseType(StatusCodes.Status404NotFound)]
-		public async Task<ActionResult<T>> Get(string slug)
-		{
-			T ret = await _repository.GetOrDefault(slug);
+			T ret = await identifier.Match(
+				id => _repository.GetOrDefault(id),
+				slug => _repository.GetOrDefault(slug)
+			);
 			if (ret == null)
 				return NotFound();
 			return ret;
@@ -256,50 +238,26 @@ namespace Kyoo.Core.Api
 		}
 
 		/// <summary>
-		/// Delete by ID
+		/// Delete an item
 		/// </summary>
 		/// <remarks>
-		/// Delete one item via it's ID.
+		/// Delete one item via it's ID or it's slug.
 		/// </remarks>
-		/// <param name="id">The ID of the resource to delete.</param>
+		/// <param name="identifier">The ID or slug of the resource to delete.</param>
 		/// <returns>The item has successfully been deleted.</returns>
-		/// <response code="404">No item could be found with the given id.</response>
-		[HttpDelete("{id:int}")]
+		/// <response code="404">No item could be found with the given id or slug.</response>
+		[HttpDelete("{identifier:id}")]
 		[PartialPermission(Kind.Delete)]
 		[ProducesResponseType(StatusCodes.Status200OK)]
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
-		public async Task<IActionResult> Delete(int id)
+		public async Task<IActionResult> Delete(Identifier identifier)
 		{
 			try
 			{
-				await _repository.Delete(id);
-			}
-			catch (ItemNotFoundException)
-			{
-				return NotFound();
-			}
-
-			return Ok();
-		}
-
-		/// <summary>
-		/// Delete by slug
-		/// </summary>
-		/// <remarks>
-		/// Delete one item via it's slug (an unique, human-readable identifier).
-		/// </remarks>
-		/// <param name="slug">The slug of the resource to delete.</param>
-		/// <returns>The item has successfully been deleted.</returns>
-		/// <response code="404">No item could be found with the given slug.</response>
-		[HttpDelete("{slug}")]
-		[PartialPermission(Kind.Delete)]
-		[ProducesResponseType(StatusCodes.Status200OK)]
-		[ProducesResponseType(StatusCodes.Status404NotFound)]
-		public async Task<IActionResult> Delete(string slug)
-		{
-			try
-			{
-				await _repository.Delete(slug);
+				await identifier.Match(
+					id => _repository.Delete(id),
+					slug => _repository.Delete(slug)
+				);
 			}
 			catch (ItemNotFoundException)
 			{

src/Kyoo.Swagger/SwaggerModule.cs

@@ -19,9 +19,12 @@
 using System;
 using System.Collections.Generic;
 using Kyoo.Abstractions.Controllers;
+using Kyoo.Abstractions.Models.Utils;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Mvc.ApplicationModels;
 using Microsoft.Extensions.DependencyInjection;
+using NJsonSchema;
+using NJsonSchema.Generation.TypeMappers;
 using NSwag;
 using NSwag.Generation.AspNetCore;
 using static Kyoo.Abstractions.Models.Utils.Constants;
@@ -77,6 +80,11 @@ namespace Kyoo.Swagger
 						return ctx.ApiDescription.ActionDescriptor.AttributeRouteInfo?.Order != AlternativeRoute;
 					return true;
 				});
+				options.SchemaGenerator.Settings.TypeMappers
+					.Add(new PrimitiveTypeMapper(
+						typeof(Identifier),
+						x => x.Type = JsonObjectType.String | JsonObjectType.Integer)
+					);
 			});
 		}