Added basic RPC wrapper into project

Discord Media Loader.Application/Classes/RPC/DiscordRpc.cs

@@ -0,0 +1,59 @@
+using System.Runtime.InteropServices;
+
+namespace DML.Application.Classes.RPC
+{
+    // https://github.com/discordapp/discord-rpc/blob/master/examples/button-clicker/Assets/DiscordRpc.cs
+    // Give that man a cookie ^.^
+
+    public class DiscordRpc
+    {
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void ReadyCallback();
+
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void DisconnectedCallback(int errorCode, string message);
+
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void ErrorCallback(int errorCode, string message);
+
+        public struct EventHandlers
+        {
+            public ReadyCallback readyCallback;
+            public DisconnectedCallback disconnectedCallback;
+            public ErrorCallback errorCallback;
+        }
+
+        // Values explanation and example: https://discordapp.com/developers/docs/rich-presence/how-to#updating-presence-update-presence-payload-fields
+        [System.Serializable]
+        public struct RichPresence
+        {
+            public string state; /* max 128 bytes */
+            public string details; /* max 128 bytes */
+            public long startTimestamp;
+            public long endTimestamp;
+            public string largeImageKey; /* max 32 bytes */
+            public string largeImageText; /* max 128 bytes */
+            public string smallImageKey; /* max 32 bytes */
+            public string smallImageText; /* max 128 bytes */
+            public string partyId; /* max 128 bytes */
+            public int partySize;
+            public int partyMax;
+            public string matchSecret; /* max 128 bytes */
+            public string joinSecret; /* max 128 bytes */
+            public string spectateSecret; /* max 128 bytes */
+            public bool instance;
+        }
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_Initialize", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void Initialize(string applicationId, ref EventHandlers handlers, bool autoRegister, string optionalSteamId);
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_UpdatePresence", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void UpdatePresence(ref RichPresence presence);
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_RunCallbacks", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void RunCallbacks();
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_Shutdown", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void Shutdown();
+    }
+}

Discord Media Loader.Application/Classes/RPC/RpcWrapper.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace DML.Application.Classes.RPC
+{
+    public class RpcWrapper
+    {
+        public const string Dll = "discord-rpc-win32";
+
+        public RpcWrapper()
+        {
+            if (!File.Exists(Dll + ".dll"))
+            {
+                MessageBox.Show(
+                    "Missing " + Dll + ".dll\n\n" +
+                    "Grab it from the release on GitHub or from the DiscordRpcDemo/lib/ folder in the repo then put it alongside DiscordRpcDemo.exe.\n\n" +
+                    "https://github.com/nostrenz/cshap-discord-rpc-demo"
+                );
+
+                System.Windows.Forms.Application.Exit();
+            }
+        }
+    }
+}

Discord Media Loader.Application/DML.Application.csproj

@@ -161,6 +161,8 @@
     <Compile Include="Classes\Core.cs" />
     <Compile Include="Classes\Job.cs" />
     <Compile Include="Classes\JobScheduler.cs" />
+    <Compile Include="Classes\RPC\DiscordRpc.cs" />
+    <Compile Include="Classes\RPC\RpcWrapper.cs" />
     <Compile Include="Dialogs\LoginDialog.cs">
       <SubType>Form</SubType>
     </Compile>