initial code

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src/EpicMorg.SteamPathsLib/EpicMorg.SteamPathsLib.csproj

@@ -41,7 +41,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Class1.cs" />
+    <Compile Include="SteamPathsUtil.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

src/EpicMorg.SteamPathsLib/SteamPathsUtil.cs

@@ -1,12 +1,159 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using Microsoft.Win32;
 
 namespace EpicMorg.SteamPathsLib
 {
     public class SteamPathsUtil
     {
+        private static readonly string _valveKey = @"Software\Valve";
+        private static readonly string _valveSteamKey = @"Software\Valve\Steam";
+        private static readonly string _valveSteamAppsKey = @"Software\Valve\Steam\Apps";
+        private static readonly string _valveActiveProcessPID = @"Software\Valve\Steam\ActiveProcess";
+
+        private static readonly string _valveSteamAppsPattern = @"Software\Valve\Steam\Apps\";
+
+        public static Dictionary<string, string> GetInfo()
+        {
+            var result = new Dictionary<string, string>();
+
+            result["ValveKeyRegistry"] = GetValveKeyRegistry();
+            result["SteamKeyRegistry"] = GetSteamKeyRegistry();
+            result["SteamAppsKeyRegistry"] = GetSteamAppsKeyRegistry();
+            result["SteamDirectoryPath"] = GetSteamDirectoryPath();
+            result["SteamExePath"] = GetSteamExePath();
+            result["SteamExePid"] = GetSteamExePid();
+            result["OriginalSourceModDirectoryPath"] = GetOriginalSourceModDirectoryPath();
+
+            return result;
+        }
+
+        public static string GetValveKeyRegistry()
+        {
+            try
+            {
+                return Registry.CurrentUser.OpenSubKey(_valveKey).ToString();
+            }
+            catch (Exception)
+            {
+                return null;
+            };
+        }
+
+        public static string GetSteamKeyRegistry()
+        {
+            try
+            {
+                return Registry.CurrentUser.OpenSubKey(_valveSteamKey).ToString();
+            }
+            catch (Exception)
+            {
+                return null;
+            };
+        }
+
+        public static string GetSteamAppsKeyRegistry()
+        {
+            try
+            {
+                return Registry.CurrentUser.OpenSubKey(_valveSteamAppsKey).ToString();
+            }
+            catch (Exception)
+            {
+                return null;
+            };
+        }
+
+        public static string GetSteamDirectoryPath()
+        {
+            try
+            {
+                using (var key = Registry.CurrentUser.OpenSubKey(_valveSteamKey))
+                {
+                    var path = key.GetValue("SteamPath").ToString();
+                    if (path != @"")
+                    {
+                        return path;
+                    }
+                }
+            }
+            catch (Exception) { };
+
+            return null;
+        }
+
+        public static string GetSteamExePath()
+        {
+            try
+            {
+                using (var key = Registry.CurrentUser.OpenSubKey(_valveSteamKey))
+                {
+                    var path = key.GetValue("SteamExe").ToString();
+                    if (path != @"")
+                    {
+                        return path;
+                    }
+                }
+            }
+            catch (Exception) { };
+
+            return null;
+        }
+
+        public static string GetSteamExePid()
+        {
+            try
+            {
+                using (var key = Registry.CurrentUser.OpenSubKey(_valveActiveProcessPID))
+                {
+                    var pid = key.GetValue("pid").ToString();
+                    if (pid != @"0")
+                    {
+                        return pid;
+                    }
+                }
+            }
+            catch (Exception) { };
+
+            return null;
+        }
+
+        public static string GetOriginalSourceModDirectoryPath()
+        {
+            try
+            {
+                using (var key = Registry.CurrentUser.OpenSubKey(_valveSteamKey))
+                {
+                    var path = key.GetValue("SourceModInstallPath").ToString();
+                    if (path != @"")
+                    {
+                        return path;
+                    }
+                }
+            }
+            catch (Exception) { };
+
+            return null;
+        }
+
+        public static bool IsInstalledApps(int number)
+        {
+            try
+            {
+                var appKey = _valveSteamAppsPattern + number;
+
+                using (var key = Registry.CurrentUser.OpenSubKey(appKey))
+                {
+                    var installedValue = key.GetValue("Installed");
+                    if (installedValue.Equals(1))
+                    {
+                        return true;
+                    }
+                }
+            }
+            catch (Exception) { };
+
+            return false;
+        }
     }
 }

src/EpicMorg.SteamPathsSolution.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.29509.3
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SteamPathsLib", "SteamPathsLib\SteamPathsLib.csproj", "{00E7A45F-69F7-41FC-B2A7-566E2904E49B}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EpicMorg.SteamPathsLib", "EpicMorg.SteamPathsLib\EpicMorg.SteamPathsLib.csproj", "{E34AE985-7C7E-49BA-A2B0-70D88F865265}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -11,10 +11,10 @@ Global
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{00E7A45F-69F7-41FC-B2A7-566E2904E49B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{00E7A45F-69F7-41FC-B2A7-566E2904E49B}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{00E7A45F-69F7-41FC-B2A7-566E2904E49B}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{00E7A45F-69F7-41FC-B2A7-566E2904E49B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E34AE985-7C7E-49BA-A2B0-70D88F865265}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E34AE985-7C7E-49BA-A2B0-70D88F865265}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E34AE985-7C7E-49BA-A2B0-70D88F865265}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E34AE985-7C7E-49BA-A2B0-70D88F865265}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE