<?php
namespace app\admin\controller;

class Menu extends Auth
{
    /**
     * 菜单管理页
     */
    public function index(){
        $pid = input('pid',0,'intval');
        if(request()->isAjax()){
            //分页参数
            $length = input('rows',10,'intval');   //每页条数
            $page = input('page',1,'intval');      //第几页
            $start = ($page - 1) * $length;     //分页开始位置
            //排序
            $sortRow = input('sidx','sort','trim');      //排序列
            $sort = input('sord','asc','trim');        //排序方式
            $order = $sortRow.' '.$sort;
            $map['pid'] = $pid;
            $map['del'] = 0;
            //数据查询
            $lists = db('menu')->where($map)->limit($start,$length)->order($order)->select();
            foreach ($lists as $k=>$v){
                if($v['pid']){
                    $lists[$k]['ptitle'] = db('menu')->where('id',$v['pid'])->value('title');
                }else{
                    $lists[$k]['ptitle'] = '无';
                }
            }
            //数据返回
            $totalCount = db('menu')->where($map)->count();
            $totalPage = ceil($totalCount/$length);
            $result['page'] = $page;
            $result['total'] = $totalPage;
            $result['records'] = $totalCount;
            $result['rows'] = $lists;
            return json($result);
        }else{
            if($pid){
                $ptitle = '['.db('menu')->where('id',$pid)->value('title').']子菜单列表';
                $ppid = db('menu')->where('id',$pid)->value('pid');
            }else{
                $ptitle = '菜单列表';
                $ppid = 0;
            }
            $this->assign('meta_title',$ptitle);
            $this->assign('pid',$pid);
            $this->assign('ppid',$ppid);
            return $this->fetch();
        }
    }

    /**
     * 新增/编辑
     */
    public function add($id=0,$pid=0){
        if(request()->isPost()){
            $res = model('Menu')->updates();
            if($res){
                $this->success('操作成功',url('index',array('pid'=>$pid)));
            }else{
                $this->error(model('Menu')->getError());
            }
        }else{
            $meta_title = '新增菜单';
            if($id){
                $info = db('menu')->where('id',$id)->find();
                $this->assign('info',$info);
                $meta_title = '编辑菜单';
            }
            $list = get_menu();
            $this->assign('list',$list);
            $this->assign('pid',$pid);
            $this->assign('meta_title',$meta_title);
            return $this->fetch();
        }
    }

    /**
     * 删除记录
     * @param int $id
     */
    public function del($id=0){
        if(!$id){
            $this->error('参数错误');
        }
        $map['pid'] = $id;
        $map['del'] = 0;
        $subid = db('menu')->where($map)->value('id');
        if($subid){
            $this->error('有下级不能删除');
        }
        $res = db('menu')->where('id',$id)->update(['del'=>1]);
        if($res){
            $this->success('删除成功');
        }else{
            $this->error('删除失败');
        }
    }

    /**
     * 改变字段值
     * @param int $fv
     * @param string $fn
     * @param int $fv
     */
    public function changeField($id=0,$fn='',$fv=0){
        if(!$fn||!$id){
            $this->error('参数错误');
        }
        $res = db('menu')->where('id',$id)->setField($fn,$fv);
        if($res){
            $this->success('操作成功');
        }else{
            $this->error('操作失败');
        }
    }

    /**
     * 排序
     * @param int $id
     * @param int $sort
     */
    public function changeSort($id=0,$sort=0){
        if($id<0||$sort<0){
            $this->error('参数错误');
        }
        $res = db('menu')->where('id',$id)->setField('sort',$sort);
        if($res){
            $this->success('操作成功');
        }else{
            $this->error('操作失败');
        }
    }


}