support multi-module (#4)

* add multimodule
* re-package modules

server/internal/router/validator.go

@@ -0,0 +1,66 @@
+package router
+
+import (
+	"strings"
+
+	"galaxy/util"
+
+	"github.com/go-playground/validator/v10"
+)
+
+var notBlankStringValidator validator.Func = func(fl validator.FieldLevel) bool {
+	s, ok := fl.Field().Interface().(string)
+	if ok {
+		if len(strings.TrimSpace(s)) == 0 {
+			return false
+		}
+	}
+	return true
+}
+
+var entityNameStringValidator validator.Func = func(fl validator.FieldLevel) bool {
+	s, ok := fl.Field().Interface().(string)
+	if ok {
+		if _, ok := util.ValidateTypeName(s); !ok {
+			return false
+		}
+	}
+	return true
+}
+
+var productionTypeStringValidator validator.Func = func(fl validator.FieldLevel) bool {
+	v, ok := fl.Field().Interface().(string)
+	if ok {
+		f := fl.Parent().FieldByName(fl.Param())
+		if f.String() == "SHIP" || f.String() == "SCIENCE" {
+			if _, ok := util.ValidateTypeName(v); !ok {
+				return false
+			}
+		}
+	}
+	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)
+}