fix panic and width determination

pkg/es/api.go

@@ -453,10 +453,6 @@ func matchOperation(showpath, verb string) (*Op, error) {
 	ops := []*Op{}
 	op := &Op{}
 
-	if verb == "" {
-		verb = "get"
-	}
-
 	for path, item := range assets.OpenAPI.Spec().Paths.Paths {
 		if path == showpath {
 			ops = findOperation(item.PathItemProps)
@@ -468,6 +464,10 @@ func matchOperation(showpath, verb string) (*Op, error) {
 		return nil, errors.New("no matching API call found")
 	}
 
+	if len(ops) == 1 && verb == "" {
+		return ops[0], nil
+	}
+
 	for _, item := range ops {
 		if strings.ToLower(item.Verb) == verb {
 			op = item
@@ -509,14 +509,11 @@ func findOperation(item spec.PathItemProps) []*Op {
 
 func getTermWidth() int {
 	if term.IsTerminal(int(os.Stdout.Fd())) {
-		println("in a term")
-	} else {
-		println("not in a term")
-	}
-	width, _, err := term.GetSize(int(os.Stdout.Fd()))
-	if err != nil {
-		return 80
+		width, _, err := term.GetSize(int(os.Stdout.Fd()))
+		if err == nil {
+			return width - DefaultMargin
+		}
 	}
 
-	return width - DefaultMargin
+	return 80
 }