<?php

namespace app\admin\controller\auth;

use app\common\controller\Backend;
use fast\Random;
use fast\Tree;

/**
 * 管理员管理
 *
 * @icon fa fa-users
 * @remark 一个管理员可以有多个角色组,左侧的菜单根据管理员所拥有的权限进行生成
 */
class Admin extends Backend
{

    protected $model = null;
    //当前登录管理员所有子节点组别
    protected $childrenIds = [];

    public function _initialize()
    {
        parent::_initialize();
        $this->model = model('Admin');

        $groups = $this->auth->getGroups();

        // 取出所有分组
        $grouplist = model('AuthGroup')->all(['status' => 'normal']);
        $objlist = [];
        foreach ($groups as $K => $v)
        {
            // 取出包含自己的所有子节点
            $childrenlist = Tree::instance()->init($grouplist)->getChildren($v['id'], TRUE);
            $obj = Tree::instance()->init($childrenlist)->getTreeArray($v['pid']);
            $objlist = array_merge($objlist, Tree::instance()->getTreeList($obj));
        }
        $groupdata = [];
        foreach ($objlist as $k => $v)
        {
            $groupdata[$v['id']] = $v['name'];
        }
        $this->childrenIds = array_keys($groupdata);
        $this->view->assign('groupdata', $groupdata);
    }

    /**
     * 查看
     */
    public function index()
    {
        if ($this->request->isAjax())
        {
            $groupData = model('AuthGroup')->where('status', 'normal')->column('id,name');

            $childrenAdminIds = [];
            $authGroupList = model('AuthGroupAccess')
                    ->field('uid,group_id')
                    ->where('group_id', 'in', $this->childrenIds)
                    ->select();
            
            $adminGroupName = [];
            foreach ($authGroupList as $k => $v)
            {
                $childrenAdminIds[] = $v['uid'];
                if (isset($groupData[$v['group_id']]))
                    $adminGroupName[$v['uid']][$v['group_id']] = $groupData[$v['group_id']];
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $total = $this->model
                    ->where($where)
                    ->where('id', 'in', $childrenAdminIds)
                    ->order($sort, $order)
                    ->count();

            $list = $this->model
                    ->where($where)
                    ->where('id', 'in', $childrenAdminIds)
                    ->field(['password', 'salt', 'token'], true)
                    ->order($sort, $order)
                    ->limit($offset, $limit)
                    ->select();
            foreach ($list as $k => &$v)
            {
                $groups = isset($adminGroupName[$v['id']]) ? $adminGroupName[$v['id']] : [];
                $v['groups'] = implode(',', array_keys($groups));
                $v['groups_text'] = implode(',', array_values($groups));
            }
            $result = array("total" => $total, "rows" => $list);

            return json($result);
        }
        return $this->view->fetch();
    }

    /**
     * 添加
     */
    public function add()
    {
        if ($this->request->isPost())
        {
            $params = $this->request->post("row/a");
            if ($params)
            {
                $params['salt'] = Random::alnum();
                $params['password'] = md5(md5($params['password']) . $params['salt']);
                $params['avatar'] = '/assets/img/avatar.png'; //设置新管理员默认头像。

                $admin = $this->model->create($params);
                $group = $this->request->post("group/a");

                //过滤不允许的组别,避免越权
                $group = array_intersect($this->childrenIds, $group);
                $dataset = [];
                foreach ($group as $value)
                {
                    $dataset[] = ['uid' => $admin->id, 'group_id' => $value];
                }
                model('AuthGroupAccess')->saveAll($dataset);
                $this->success();
            }
            $this->error();
        }
        return $this->view->fetch();
    }

    /**
     * 编辑
     */
    public function edit($ids = NULL)
    {
        $row = $this->model->get(['id' => $ids]);
        if (!$row)
            $this->error(__('No Results were found'));
        if ($this->request->isPost())
        {
            $params = $this->request->post("row/a");
            if ($params)
            {
                if ($params['password'])
                {
                    $params['salt'] = Random::alnum();
                    $params['password'] = md5(md5($params['password']) . $params['salt']);
                }
                else
                {
                    unset($params['password'], $params['salt']);
                }
                $row->save($params);

                // 先移除所有权限
                model('AuthGroupAccess')->where('uid', $row->id)->delete();

                $group = $this->request->post("group/a");

                // 过滤不允许的组别,避免越权
                $group = array_intersect($this->childrenIds, $group);

                $dataset = [];
                foreach ($group as $value)
                {
                    $dataset[] = ['uid' => $row->id, 'group_id' => $value];
                }
                model('AuthGroupAccess')->saveAll($dataset);
                $this->success();
            }
            $this->error();
        }
        $grouplist = $this->auth->getGroups($row['id']);
        $groupids = [];
        foreach ($grouplist as $k => $v)
        {
            $groupids[] = $v['id'];
        }
        $this->view->assign("row", $row);
        $this->view->assign("groupids", $groupids);
        return $this->view->fetch();
    }

    /**
     * 删除
     */
    public function del($ids = "")
    {
        if ($ids)
        {
            // 避免越权删除管理员
            $childrenGroupIds = $this->childrenIds;
            $adminList = $this->model->where('id', 'in', $ids)->where('id', 'in', function($query) use($childrenGroupIds) {
                        $query->name('auth_group_access')->where('group_id', 'in', $childrenGroupIds)->field('uid');
                    })->select();
            if ($adminList)
            {
                $deleteIds = [];
                foreach ($adminList as $k => $v)
                {
                    $deleteIds[] = $v->id;
                }
                $deleteIds = array_diff($deleteIds, [$this->auth->id]);
                if ($deleteIds)
                {
                    $this->model->destroy($deleteIds);
                    model('AuthGroupAccess')->where('uid', 'in', $deleteIds)->delete();
                    $this->success();
                }
            }
        }
        $this->error();
    }

    /**
     * 批量更新
     * @internal
     */
    public function multi($ids = "")
    {
        // 管理员禁止批量操作
        $this->error();
    }

}