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Kreta.Core/KretaVersion.cs

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+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace Kreta.Core
+{
+    public sealed class KretaVersion
+    {
+        private KretaVersion()
+        {
+        }
+
+        private static readonly Lazy<VersionInfo> VersionInfo = new Lazy<VersionInfo>(GetVersionInfo);
+
+        public static VersionInfo Instance => VersionInfo.Value;
+
+        private static VersionInfo GetVersionInfo()
+        {
+            var assembly = Assembly.GetExecutingAssembly();
+
+            string assemblyLocation = assembly.Location;
+
+            DateTime assemblyCreationDateTime = File.GetCreationTime(assemblyLocation);
+            var result = new VersionInfo
+            {
+                AssemblyCreationDateTime = assemblyCreationDateTime
+            };
+
+            FileVersionInfo fileVersionInfo = FileVersionInfo.GetVersionInfo(assemblyLocation);
+
+            string mainVersion = fileVersionInfo.FileVersion;
+            if (!string.IsNullOrWhiteSpace(mainVersion))
+            {
+                result.MainVersion = mainVersion;
+            }
+
+            int fileMajorPart = fileVersionInfo.FileMajorPart;
+            int fileMinorPart = fileVersionInfo.FileMinorPart;
+            if (fileMajorPart > 0 && fileMinorPart >= 0)
+            {
+                result.ShortMainVersion = $"{fileMajorPart}.{fileMinorPart}";
+            }
+
+            List<AssemblyMetadataAttribute> customAttributes = assembly.GetCustomAttributes().OfType<AssemblyMetadataAttribute>().ToList();
+
+            string branchName = customAttributes.SingleOrDefault(x => x.Key == Constants.Version.BranchName)?.Value;
+            if (!string.IsNullOrWhiteSpace(branchName))
+            {
+                result.BranchName = branchName;
+            }
+
+            string commitNumber = customAttributes.SingleOrDefault(x => x.Key == Constants.Version.CommitNumber)?.Value;
+            if (!string.IsNullOrWhiteSpace(commitNumber))
+            {
+                result.CommitNumber = commitNumber;
+            }
+
+            return result;
+        }
+    }
+}