Merge pull request #217 from github/feature/pr/duration-converter

A handy date to duration converter

Author: haacked

src/GitHub.UI/Converters/DurationToStringConverter.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Globalization;
+
+namespace GitHub.UI
+{
+    public class DurationToStringConverter : ValueConverterMarkupExtension<DurationToStringConverter>
+    {
+        public override object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            const int year = 365;
+            const int month = 30;
+            const int day = 24;
+            const int hour = 60;
+            const int minute = 60;
+
+            TimeSpan duration;
+            if (value is TimeSpan)
+                duration = (TimeSpan)value;
+            else if (value is DateTime)
+                duration = DateTime.UtcNow - (DateTime)value;
+            else if (value is DateTimeOffset)
+                duration = DateTimeOffset.UtcNow - (DateTimeOffset)value;
+            else
+                return value;
+
+            if (duration.TotalDays >= year)
+                return string.Format(culture, (int)(duration.TotalDays / year) > 1 ? Resources.years : Resources.year, (int)(duration.TotalDays / year));
+            else if (duration.TotalDays >= 360)
+                return string.Format(culture, Resources.months, 11);
+            else if (duration.TotalDays >= month)
+                return string.Format(culture, (int)(duration.TotalDays / (month)) > 1 ? Resources.months : Resources.month, (int)(duration.TotalDays / (month)));
+            else if (duration.TotalHours >= day)
+                return string.Format(culture, (int)(duration.TotalHours / day) > 1 ? Resources.days : Resources.day, (int)(duration.TotalHours / day));
+            else if (duration.TotalMinutes >= hour)
+                return string.Format(culture, (int)(duration.TotalMinutes / hour) > 1 ? Resources.hours : Resources.hour, (int)(duration.TotalMinutes / hour));
+            else if (duration.TotalSeconds >= minute)
+                return string.Format(culture, (int)(duration.TotalSeconds / minute) > 1 ? Resources.minutes : Resources.minute, (int)(duration.TotalSeconds / minute));
+            return string.Format(culture, duration.TotalSeconds > 1 ? Resources.seconds : Resources.second, duration.TotalSeconds);
+        }
+    }
+}

src/GitHub.UI/GitHub.UI.csproj

@@ -69,10 +69,16 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>OcticonPaths.resx</DependentUpon>
     </Compile>
+    <Compile Include="Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
     <None Include="..\..\script\Key.snk" Condition="$(Buildtype) == 'Internal'">
       <Link>Key.snk</Link>
     </None>
     <Compile Include="Controls\GitHubProgressBar.cs" />
+    <Compile Include="Converters\DurationToStringConverter.cs" />
     <Compile Include="Converters\HasItemsVisibilityConverter.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="..\common\SolutionInfo.cs">
@@ -194,6 +200,11 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>OcticonPaths.Designer.cs</LastGenOutput>
     </EmbeddedResource>
+    <EmbeddedResource Include="Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\GitHub.Exports\GitHub.Exports.csproj">