파일 위치를 twe에서 hwe로 옮김.

hwe/sammo/CityHelper.php

@@ -0,0 +1,75 @@
+<?php
+namespace sammo;
+
+class CityHelper{
+    //Just Helper
+    private static $list = null;
+    private static $listInv = null;
+    private static $listByNation  = null;
+
+    private function __construct(){
+
+    }
+
+    public static function flushCache(){
+        self::$list = null;
+        self::$listInv = null;
+        self::$listByNation = null;
+    }
+
+    public static function generateCache(){
+        $list = [];
+        $listInv = [];
+        $listByNation = [];
+        
+        foreach (DB::db()->query('SELECT `city` as `id`, `name`, `level`, `nation` from city') as $city) {
+            $id = $city['id'];
+            $name = $city['name'];
+            $list[$id] = $city;
+            $listInv[$city['name']] = $city;
+
+            if(!key_exists($id, $listByNation)){
+                $listByNation[$id] = [];
+            }
+            $listByNation[$id][] = $city;
+        }
+
+        self::$list = $list;
+        self::$listInv = $listInv;
+        self::$listByNation = $listByNation;
+    }
+
+    public static function getAllCities(){
+        if(self::$list === null){
+            self::generateCache();
+        }
+
+        return self::$list;
+    }
+
+    public static function getAllNationCities(int $nationID){
+        if(self::$listByNation === null){
+            self::generateCache();
+        }
+
+        return Util::array_get(self::$listByNation[$nationID], []);
+    }
+
+    public static function getCity(int $cityID){
+        if(self::$list === null){
+            self::generateCache();
+        }
+
+        return self::$list[$cityID];
+    }
+
+    public static function getCityByName(string $cityName){
+        if(self::$listInv === null){
+            self::generateCache();
+        }
+
+        return self::$listInv[$cityName];
+    }
+
+    
+}