fix: Refactoring method casbinJsGetPermissionForUser

src/main/java/org/casbin/jcasbin/main/Frontend.java

@@ -27,26 +27,20 @@ public static String casbinJsGetPermissionForUser(Enforcer e, String user) {
     Model model = e.getModel();
     Map<String, Object> m = new HashMap<>();
     m.put("m", model.saveModelToText().trim());
-    List<List<String>> policies = new ArrayList<>();
-    for (String ptype : model.model.get("p").keySet()) {
-      List<List<String>> policy = model.getPolicy("p", ptype);
-      for (List<String> p : policy) {
-        List<String> tmp = new ArrayList<>(p);
-        tmp.add(0, ptype);
-        policies.add(tmp);
-      }
-    }
-    m.put("p", policies);
-    policies = new ArrayList<>();
-    for (String ptype : model.model.get("g").keySet()) {
-        List<List<String>> policy = model.getPolicy("g", ptype);
-        for (List<String> p : policy) {
-          List<String> tmp = new ArrayList<>(p);
-          tmp.add(0, ptype);
-          policies.add(tmp);
-        }
-    }
-    m.put("g", policies);
+    m.put("p", getPolicyBySection(model,"p"));
+    m.put("g", getPolicyBySection(model,"g"));
     return new Gson().toJson(m);
   }
+  private static List<List<String>> getPolicyBySection(Model model, String section) {
+      List<List<String>> policies = new ArrayList<>();
+      for (String ptype : model.model.get(section).keySet()) {
+          List<List<String>> policy = model.getPolicy(section, ptype);
+          for (List<String> p : policy) {
+              List<String> tmp = new ArrayList<>(p);
+              tmp.add(0, ptype);
+              policies.add(tmp);
+          }
+      }
+      return policies;
+  }
 }