Reworking the plugin interface and moving the database to an external dll

Kyoo.Common/Controllers/IPlugin.cs

@@ -1,8 +1,14 @@
+using JetBrains.Annotations;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.Configuration;
+using Unity;
+
 namespace Kyoo.Controllers
 {
 	/// <summary>
 	/// A common interface used to discord plugins
 	/// </summary>
+	[UsedImplicitly(ImplicitUseTargetFlags.WithInheritors)]
 	public interface IPlugin
 	{
 		/// <summary>
@@ -19,21 +25,35 @@ namespace Kyoo.Controllers
 		/// The description of this plugin. This will be displayed on the "installed plugins" page.
 		/// </summary>
 		string Description { get; }
-
-
+		
 		/// <summary>
-		/// A configure method that will be runned on plugin's startup.
+		/// A list of services that are provided by this service. This allow other plugins to declare dependencies.
 		/// </summary>
 		/// <remarks>
-		/// You can have use any services as parameter, they will be injected from the service provider
-		/// You can add managed types or any type you like using the IUnityContainer like so:
-		/// <code>
-		/// public static void Configure(IUnityContainer services)
-		/// {
-		///		services.AddTask&lt;MyTask&gt;()
-		/// }
-		/// </code>
+		/// The format should be the name of the interface ':' and the name of the implementation.
+		/// For a plugins that provide a new service named IService with a default implementation named Koala, that would
+		/// be "IService:Koala".
 		/// </remarks>
-		static void Configure() { }
+		string[] Provides { get; }
+		
+		/// <summary>
+		/// A list of services that are required by this service.
+		/// The Core will warn the user that this plugin can't be loaded if a required service is not found.
+		/// </summary>
+		/// <remarks>
+		/// This is the same format as <see cref="Provides"/> but you may leave a blank implementation's name if you don't need a special one.
+		/// For example, if you need a service named IService but you don't care what implementation it will be, you can use
+		/// "IService:"
+		/// </remarks>
+		string[] Requires { get; }
+
+		/// <summary>
+		/// A configure method that will be run on plugin's startup.
+		/// </summary>
+		/// <param name="container">A unity container to register new services.</param>
+		/// <param name="config">The configuration, if you need values at config time (database connection strings...)</param>
+		/// <param name="app">The Asp.Net application builder. On most case it is not needed but you can use it to add asp net functionalities.</param>
+		/// <param name="debugMode">True if the app should run in debug mode.</param>
+		void Configure(IUnityContainer container, IConfiguration config, IApplicationBuilder app, bool debugMode);
 	}
 }

Kyoo.Common/Controllers/ITaskManager.cs

@@ -18,7 +18,7 @@ namespace Kyoo.Controllers
 		/// <param name="arguments">A list of arguments to pass to the task. An automatic conversion will be made if arguments to not fit.</param>
 		/// <exception cref="ArgumentException">If the number of arguments is invalid or if an argument can't be converted.</exception>
 		/// <exception cref="ItemNotFound">The task could not be found.</exception>
-		void StartTask(string taskSlug, Dictionary<string, object> arguments);
+		void StartTask(string taskSlug, Dictionary<string, object> arguments = null);
 		
 		/// <summary>
 		/// Get all currently running tasks