add ascii art

internal/cli/art.go

@@ -0,0 +1,40 @@
+package cli
+
+import "fmt"
+
+var art string = `
+ _____╬═╬____________________________________________
+ |_|__╬═╬___|___|___|___| EVERYWALL |___|___|___|___|
+ |___|╬═╬|___▄▄▌   ▄▄▄· ·▄▄▄▄  ·▄▄▄▄  ▄▄▄ .▄▄▄  __|_|
+ |_|__╬═╬___|██•  ▐█ ▀█ ██▪ ██ ██▪ ██ ▀▄.▀·▀▄ █·|___|
+ |___|╬═╬|___██▪  ▄█▀▀█ ▐█· ▐█▌▐█· ▐█▌▐▀▀▪▄▐▀▀▄ __|_|
+ |_|__╬═╬___|▐█▌▐▌▐█ ▪▐▌██. ██ ██. ██ ▐█▄▄▌▐█•█▌|___|
+ |___|╬═╬|___.▀▀▀  ▀  ▀ ▀▀▀▀▀• ▀▀▀▀▀•  ▀▀▀ .▀  ▀__|_|
+ |_|__╬═╬___|___|___|__ VERSION %s __|___|___|___|
+ |___|╬═╬|____|___|___|___|___|___|___|___|___|___|_|
+ `
+
+func StartupMessage(version string, port string, ruleset string) string {
+	buf := fmt.Sprintf(art, version)
+	buf += fmt.Sprintf("\n > listening on http://localhost:%s\n", port)
+	if ruleset == "" {
+		buf += " ! no ruleset specified.\n > for better performance, use a ruleset using --ruleset\n"
+	} else {
+		buf += fmt.Sprintf(" > using ruleset: %s\n", ruleset)
+	}
+	return colorizeNonASCII(buf)
+}
+
+func colorizeNonASCII(input string) string {
+	result := ""
+	for _, r := range input {
+		if r > 127 {
+			// If the character is non-ASCII, color it blue
+			result += fmt.Sprintf("\033[94m%c\033[0m", r)
+		} else {
+			// ASCII characters remain unchanged
+			result += string(r)
+		}
+	}
+	return result
+}