feat: command validation

internal/router/validator.go

@@ -15,3 +15,27 @@ var notBlankStringValidator validator.Func = func(fl validator.FieldLevel) bool
 	}
 	return true
 }
+
+var armamentWithWeaponsValidator validator.Func = func(fl validator.FieldLevel) bool {
+	var v, compareTo float64
+
+	f := fl.Parent().FieldByName(fl.Param())
+
+	if f.CanFloat() {
+		compareTo = f.Float()
+	} else if f.CanInt() {
+		compareTo = float64(f.Int())
+	} else {
+		return false
+	}
+
+	if fl.Field().CanFloat() {
+		v = fl.Field().Float()
+	} else if fl.Field().CanInt() {
+		v = float64(fl.Field().Int())
+	} else {
+		return false
+	}
+
+	return (v == 0 && compareTo == 0) || (v >= 1 && compareTo >= 1)
+}