feat: detect windows terminal

[Delta456]

This PR adds the functionality to detect WSL (1 and 2) while using Windows Terminal as it supports TrueColor color profile. It also closes the issue #124.

[aymanbagabas]

@Delta456 could you please provide unit tests for this case?

[Delta456]

@Delta456 could you please provide unit tests for this case?

Done

[aymanbagabas]

Looking more into this, I don't think we need to check for WSL, we only need to check if we are running Windows Terminal via the WT_SESSION variable and return TrueColor if so.

diff --git a/termenv_unix.go b/termenv_unix.go
index 24d519a5d3d5..3ccf13bd96b4 100644
--- a/termenv_unix.go
+++ b/termenv_unix.go
@@ -57,6 +57,10 @@ func (o *Output) ColorProfile() Profile {
 	}
 
 	if strings.Contains(term, "256color") {
+		// Check if we're running Windows Terminal
+		if os.Getenv("WT_SESSION") != "" {
+			return TrueColor
+		}
 		return ANSI256
 	}
 	if strings.Contains(term, "color") {

[Delta456]

Looking more into this, I don't think we need to check for WSL, we only need to check if we are running Windows Terminal via the WT_SESSION variable and return TrueColor if so.

diff --git a/termenv_unix.go b/termenv_unix.go
index 24d519a5d3d5..3ccf13bd96b4 100644
--- a/termenv_unix.go
+++ b/termenv_unix.go
@@ -57,6 +57,10 @@ func (o *Output) ColorProfile() Profile {
 	}
 
 	if strings.Contains(term, "256color") {
+		// Check if we're running Windows Terminal
+		if os.Getenv("WT_SESSION") != "" {
+			return TrueColor
+		}
 		return ANSI256
 	}
 	if strings.Contains(term, "color") {

I think we should also check WSL just to be double-sure.