feature: update epoch time conversion to support both UTC and local date time

Author: barzin144

README.md

@@ -172,7 +172,8 @@ zus dt 1734895248
 ```
 
 > output: UTC: Sunday, December 22, 2024 7:20:48 PM +00:00
-> Local: Monday, December 23, 2024 3:20:48 AM +08:00
+
+> output: Local: Monday, December 23, 2024 3:20:48 AM +08:00
 
 ## JWT Decoder
 

Zus.Cli.Test/Commands/EpochTimeTests.cs

@@ -6,29 +6,46 @@ namespace Zus.Cli.Test.Commands;
 public class EpochTimeTests
 {
 	[Fact]
-	public void Convert_Should_ReturnDateTime_ForValidEpochTime()
+	public void Convert_Should_ReturnUTCDateTime_ForValidEpochTime()
 	{
 		// Arrange
 		string epochTime = "1633072800";
-		string expectedDateTime = $"UTC: Friday, October 1, 2021 7:20:00 AM +00:00{Environment.NewLine}Local: Friday, October 1, 2021 3:20:00 PM +08:00";
+		string expectedDateTime = "UTC: Friday, October 1, 2021 7:20:00 AM +00:00";
 
 		// Act
-		var result = EpochTime.Convert(epochTime);
+		var result = EpochTime.Convert(epochTime, false);
 
 		// Assert
 		Assert.NotNull(result.Result);
 		Assert.True(result.Success);
 		Assert.Equal(expectedDateTime, result.Result);
 	}
 
+	[Fact]
+	public void Convert_Should_ReturnLocalDateTime_ForValidEpochTime()
+	{
+		// Arrange
+		string epochTime = "1633072800";
+		string expectedDateTime = "Local: Friday, October 1, 2021 3:20:00 PM +08:00";
+
+		// Act
+		var result = EpochTime.Convert(epochTime, true);
+
+		// Assert
+		Assert.NotNull(result.Result);
+		Assert.True(result.Success);
+		Assert.Equal(expectedDateTime, result.Result);
+	}
+
+
 	[Fact]
 	public void Convert_Should_ReturnError_ForInvalidEpochTime()
 	{
 		// Arrange
 		string epochTime = "invalid";
 
 		// Act
-		var result = EpochTime.Convert(epochTime);
+		var result = EpochTime.Convert(epochTime, false);
 
 		// Assert
 		Assert.NotNull(result.Error);
@@ -42,7 +59,7 @@ public void Convert_Should_ReturnError_ForEmptyEpochTime()
 		string epochTime = "";
 
 		// Act
-		var result = EpochTime.Convert(epochTime);
+		var result = EpochTime.Convert(epochTime, false);
 
 		// Assert
 		Assert.NotNull(result.Error);

Zus.Cli/Commands/EpochTime.cs

@@ -4,19 +4,25 @@ namespace Zus.Cli.Commands;
 
 public static class EpochTime
 {
-	internal static CommandResult Convert(string epochTime)
+	internal static CommandResult Convert(string epochTime, bool local)
 	{
 		try
 		{
 			var utcDateTime = DateTimeOffset.FromUnixTimeSeconds(long.Parse(epochTime)).UtcDateTime;
-			TimeZoneInfo localTimeZone = TimeZoneInfo.Local;
-			DateTime localDateTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateTime, localTimeZone);
-
+			if (local)
+			{
+				TimeZoneInfo localTimeZone = TimeZoneInfo.Local;
+				DateTime localDateTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateTime, localTimeZone);
+				return new CommandResult
+				{
+					Result = $"Local: {localDateTime:dddd, MMMM d, yyyy h:mm:ss tt zzz}"
+				};
+			}
 			return new CommandResult
 			{
-				Result =
-			$"UTC: {utcDateTime:dddd, MMMM d, yyyy h:mm:ss tt zzz}{Environment.NewLine}Local: {localDateTime:dddd, MMMM d, yyyy h:mm:ss tt zzz}"
+				Result = $"UTC: {utcDateTime:dddd, MMMM d, yyyy h:mm:ss tt zzz}"
 			};
+
 		}
 		catch (Exception ex)
 		{

Zus.Cli/Program.cs

@@ -111,7 +111,11 @@
 app.AddCommand("guid", () => Display.Result(UniqueID.Generate()))
     .WithDescription("Generate a Guid");
 
-app.AddCommand("dt", ([Argument] string epochTime) => Display.Result(EpochTime.Convert(epochTime)))
+app.AddCommand("dt", ([Argument] string epochTime) =>
+{
+    Display.Result(EpochTime.Convert(epochTime, false));
+    Display.Result(EpochTime.Convert(epochTime, true));
+})
     .WithDescription("Convert epoch time to date time.");
 
 app.Run();