Jackett.Service: Make compatible with both legacy & .NET Core

src/Jackett.Service/App.config

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2"/>
-    </startup>
-    <system.net> 
-        <settings>
-            <!-- needed to make the broken incapsula DDoS protection work on windows(e.g. for KickAssTorrent), see https://social.technet.microsoft.com/Forums/de-DE/b10b16d1-8eea-4b52-8aeb-f96ea87135fa/sectionresponseheader-detailcr-must-be-followed-by-lf?forum=powerquery -->
-            <httpWebRequest useUnsafeHeaderParsing="true" /> 
-        </settings> 
-    </system.net> 
-</configuration>

src/Jackett.Service/Jackett.Service.csproj

@@ -14,6 +14,7 @@
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <RuntimeIdentifier>win</RuntimeIdentifier>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -65,25 +66,14 @@
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
-  <ItemGroup>
-    <None Include="App.config" />
-  </ItemGroup>
   <ItemGroup>
     <Content Include="jackett.ico" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\CurlSharp\CurlSharp.csproj">
-      <Project>{74420a79-cc16-442c-8b1e-7c1b913844f0}</Project>
-      <Name>CurlSharp</Name>
-    </ProjectReference>
     <ProjectReference Include="..\Jackett.Common\Jackett.Common.csproj">
       <Project>{6B854A1B-9A90-49C0-BC37-9A35C75BCA73}</Project>
       <Name>Jackett.Common</Name>
     </ProjectReference>
-    <ProjectReference Include="..\Jackett\Jackett.csproj">
-      <Project>{e636d5f8-68b4-4903-b4ed-ccfd9c9e899f}</Project>
-      <Name>Jackett</Name>
-    </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

src/Jackett.Service/Service.cs

@@ -1,29 +1,100 @@
 using Jackett.Common.Models.Config;
+using Jackett.Common.Services;
+using Jackett.Common.Services.Interfaces;
+using Jackett.Common.Utils;
+using NLog;
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Reflection;
 using System.ServiceProcess;
-using Jackett.Common;
 
 namespace Jackett.Service
 {
     public partial class Service : ServiceBase
     {
+        private IProcessService processService;
+        private Process consoleProcess;
+        private Logger logger;
+        private bool serviceStopInitiated;
+
         public Service()
         {
             InitializeComponent();
+
+            RuntimeSettings runtimeSettings = new RuntimeSettings()
+            {
+                CustomLogFileName = "ServiceLog.txt"
+            };
+
+            LogManager.Configuration = LoggingSetup.GetLoggingConfiguration(runtimeSettings);
+            logger = LogManager.GetCurrentClassLogger();
+
+            logger.Info("Initiating Jackett Service v" + EnvironmentUtil.JackettVersion);
+
+            processService = new ProcessService(logger);
         }
 
         protected override void OnStart(string[] args)
         {
-            Engine.BuildContainer(new RuntimeSettings(), new WebApi2Module());
+            logger.Info("Service starting");
-            Engine.Logger.Info("Service starting");
+            serviceStopInitiated = false;
-            Engine.Server.Initalize();
+            StartConsoleApplication();
-            Engine.Server.Start();
-            Engine.Logger.Info("Service started");
         }
 
         protected override void OnStop()
         {
-            Engine.Logger.Info("Service stopping");
+            logger.Info("Service stopping");
-            Engine.Server.Stop();
+            serviceStopInitiated = true;
+            StopConsoleApplication();
+        }
+
+        private void StartConsoleApplication()
+        {
+            string applicationFolder = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath);
+
+            var exePath = Path.Combine(applicationFolder, "JackettConsole.exe");
+
+            var startInfo = new ProcessStartInfo()
+            {
+                CreateNoWindow = true,
+                UseShellExecute = false,
+                FileName = exePath,
+                RedirectStandardInput = true,
+                RedirectStandardError = true
+            };
+
+            consoleProcess = Process.Start(startInfo);
+            consoleProcess.EnableRaisingEvents = true;
+            consoleProcess.Exited += ProcessExited;
+            consoleProcess.ErrorDataReceived += ProcessErrorDataReceived;
+        }
+
+        private void ProcessErrorDataReceived(object sender, DataReceivedEventArgs e)
+        {
+            logger.Error(e.Data);
+        }
+
+        private void ProcessExited(object sender, EventArgs e)
+        {
+            if (!serviceStopInitiated)
+            {
+                logger.Info("Service stop not responsible for process exit");
+                OnStop();
+            }
+        }
+
+        private void StopConsoleApplication()
+        {
+            if (consoleProcess != null && !consoleProcess.HasExited)
+            {
+                consoleProcess.StandardInput.Close();
+                System.Threading.Thread.Sleep(1000);
+                if (consoleProcess != null && !consoleProcess.HasExited)
+                {
+                    consoleProcess.Kill();
+                }
+            }
         }
     }
 }