use comments of variables for help

internal/pkg/node/methods.go

@@ -248,7 +248,7 @@ func recursiveFlatten(obj interface{}) (hasContent bool) {
 Create a string slice, where every element represents a yaml entry, used for node/profile edit
 in order to get a summary of all available elements
 */
-func UnmarshalConf(obj interface{}, excludeList []string) (lines []string) {
+func ConfToYaml(obj interface{}, excludeList []string) (lines []string) {
 	objType := reflect.TypeOf(obj)
 	// now iterate of every field
 	for i := 0; i < objType.NumField(); i++ {
@@ -264,7 +264,7 @@ func UnmarshalConf(obj interface{}, excludeList []string) (lines []string) {
 				typeLine = strings.Split(typeLine, ",")[0] + ":"
 			}
 			lines = append(lines, typeLine)
-			nestedLine := UnmarshalConf(reflect.New(field.Type.Elem()).Elem().Interface(), excludeList)
+			nestedLine := ConfToYaml(reflect.New(field.Type.Elem()).Elem().Interface(), excludeList)
 			for _, ln := range nestedLine {
 				lines = append(lines, "  "+ln)
 			}
@@ -274,12 +274,12 @@ func UnmarshalConf(obj interface{}, excludeList []string) (lines []string) {
 				typeLine = strings.Split(typeLine, ",")[0] + ":"
 			}
 			lines = append(lines, typeLine, "  element:")
-			nestedLine := UnmarshalConf(reflect.New(field.Type.Elem().Elem()).Elem().Interface(), excludeList)
+			nestedLine := ConfToYaml(reflect.New(field.Type.Elem().Elem()).Elem().Interface(), excludeList)
 			for _, ln := range nestedLine {
 				lines = append(lines, "    "+ln)
 			}
 		} else if field.Type.Kind() == reflect.Struct && field.Anonymous {
-			nestedLine := UnmarshalConf(reflect.New(field.Type).Elem().Interface(), excludeList)
+			nestedLine := ConfToYaml(reflect.New(field.Type).Elem().Interface(), excludeList)
 			lines = append(lines, nestedLine...)
 		}
 	}
@@ -316,9 +316,39 @@ func getYamlString(myType reflect.StructField, excludeList []string) ([]string,
 	return []string{ymlStr}, true
 }
 
-/*
-Getters for unexported fields
-*/
+// struectred type for variable
+type TemplateVarDetails struct {
+	Name    string
+	Comment string
+	Type    string
+	LongOpt string
+}
+
+// Type to sore a map which looks and feels like the variables in a template
+type TemplateVarMap map[string]TemplateVarDetails
+
+// Fill the map so that every key is like a template variable and the value is the comment field
+func (varMap TemplateVarMap) ConfToTemplateMap(obj interface{}, prefix string) {
+	objType := reflect.TypeOf(obj)
+	// now iterate of every field
+	for i := 0; i < objType.NumField(); i++ {
+		field := objType.Field(i)
+		if field.Type.Kind() == reflect.Ptr && field.Type.Elem().Kind() == reflect.Struct {
+			varMap.ConfToTemplateMap(reflect.New(field.Type.Elem()).Elem().Interface(), field.Name)
+		} else if field.Type.Kind() == reflect.Map && field.Type.Elem().Kind() == reflect.Ptr {
+			varMap.ConfToTemplateMap(reflect.New(field.Type.Elem().Elem()).Elem().Interface(), field.Name)
+		} else if field.Type.Kind() == reflect.Struct && field.Anonymous {
+			varMap.ConfToTemplateMap(reflect.New(field.Type).Elem().Interface(), field.Name)
+		} else {
+			varMap[prefix+"."+field.Name] = TemplateVarDetails{
+				Name:    field.Name,
+				Comment: field.Tag.Get("comment"),
+				Type:    field.Type.Name(),
+				LongOpt: field.Tag.Get("lopt"),
+			}
+		}
+	}
+}
 
 /*
 Returns the id of the node