package com.ibeetl.admin.core.util;

import java.util.ArrayList;
import java.util.List;

import com.ibeetl.admin.core.entity.CoreFunction;
import com.ibeetl.admin.core.rbac.tree.FunctionItem;

/**
 * 创建一个功能树，用于前端选择
 *
 * @author xiandafu
 */
public class FunctionBuildUtil {

  private FunctionBuildUtil() {}

  public static FunctionItem buildOrgTree(List<CoreFunction> list) {
    CoreFunction root = new CoreFunction();
    root.setId(0L);
    FunctionItem rootOrg = new FunctionItem(root);
    buildTreeNode(rootOrg, list);
    return rootOrg;
  }

  private static void buildTreeNode(FunctionItem parent, List<CoreFunction> list) {

    long id = parent.getId();
    List<CoreFunction> dels = new ArrayList<>();
    for (CoreFunction SysFunction : list) {
      if (SysFunction.getParentId() != null && SysFunction.getParentId() == id) {
        FunctionItem item = new FunctionItem(SysFunction);
        item.setParent(parent);
        dels.add(SysFunction);
      }
    }
    list.removeAll(dels);

    if (list.isEmpty()) {
      return;
    }
    for (FunctionItem child : parent.getChildren()) {
      buildTreeNode(child, list);
    }
  }
}
