<?php
namespace app\model;

class AuthRule extends Base
{
    //根据权限IDs获取权限列表
    public static function getListByRuleIDs($ruleIds)
    {
        $items = self::wherein('id',$ruleIds)
        //->where('status', 1)
        ->order('sort', 'asc')
        ->select()
        ->toArray();
        return self::getChildren($items);
    }

    //角色权限 + 基本权限
    public static function getAuthListByRuleIDs($groupId)
    {   
        $order = ['sort'=>'asc'];
        if ($groupId == 1) {
            $items = self::order($order)->select()->toArray();
        } else {
            $group = AuthGroup::getById($groupId);
            $rulesArr = [];
            if ($group && !empty($group['rules'])) {
                $rulesArr = array_filter(explode(',', $group['rules']));
            }
            if (count($rulesArr) >0) {
                $items = self::wherein('id', $rulesArr)->whereOr('is_base', 1)->order($order)->select()->toArray();
            } else {
                $items = self::where('is_base', 1)->order($order)->select()->toArray();
            }
        }
        $levelItems = self::getChildren($items);
        $levelIds = self::getChildrenIds($items);
        // 独立写入不在连续分层中的权限，连续分层权限可用于菜单显示
        foreach ($items as $item) {
            if(!in_array($item['id'], $levelIds)) {
                $levelItems[] = $item;
            }
        }
        return $levelItems;
    }

    //根据上级ID获取下级权限列表
    public static function getListTree($forMenu = 0)
    {
        $items = self::getList($forMenu);
        return self::getChildren($items);
    }

    //根据上级ID获取下级权限列表
    public static function getListByParentId($parentId)
    {
        return self::where('parent_id', $parentId)
        ->order('sort', 'asc')
        ->select()
        ->toArray();
    }

    /**
     * @param array $items
     * @param integer $parent_id
     * @return array
     */
    public static function getChildren($items, $parentId = 0)
    {
        $data = [];
        foreach($items as $item){
            if($item['parent_id'] == $parentId){
                $childern = self::getChildren($items, $item['id']);
                if(!empty($childern)){
                    $item['hasChildren'] = true;
                    $item['children'] = $childern;
                }
                $data[] = $item;
            }
        }
        return $data;
    } 
    
    public static function getChildrenIds($items, $parentId = 0)
    {
        $data = [];
        foreach($items as $item){
            if($item['parent_id'] == $parentId){
                $childrenIds = self::getChildrenIds($items, $item['id']);
                if(!empty($childrenIds)){
                    $data = array_merge($data, $childrenIds);
                }
                $data[] = $item['id'];
            }
        }
        return $data;
    }

    /**
     * @param integer $forMenu 大于0表示获取可显示的权限
     * @return void
     */
    private static function getList($forMenu = 0)
    {
        if($forMenu){
            return self::where('status', 1)->order('sort', 'asc')->select()->toArray();
        }else{
            return self::order('sort', 'asc')->select()->toArray();
        }
    }

    //获取可显示权限
    public static function getTopListForDisplay()
    {
        return self::where('status', 1)
        ->where('parent_id', 0)
        ->order('sort', 'asc')
        ->select()
        ->toArray();
    }

    //根据两个名字获取权限
    public static function getByTwoName($name, $otherName)
    {
        return self::whereOr('name',$name)
        ->whereOr('name',$otherName)
        ->findOrEmpty()
        ->toArray();
    }

    //根据name获取权限
    public static function getByName($name)
    {
        return self::where('name', $name)
        ->findOrEmpty()
        ->toArray();
    }
    
    public static function onAfterInsert($rule)
    {
        $rule->sort = $rule->id;
        $rule->save();
    }

    /**
     * 该情况适合无限级菜单分组显示 （当前系统仅支持2级权限，因此推荐使用getListTree 方法）
     * @param int $forMenu 是否只获取可显示菜单权限
     */
    public static function getListTreeSort($forMenu = 0)
    {
        $items = self::getList($forMenu);
        return self::groupSort($items, 0, 1, true, true);
    }

    /**
     * 分组排序（不拆分为子集）
     *
     * @param  $items 数据源
     * @param integer $pid
     * @param integer $level
     * @param bool $clear 是否释放局部变量（外部调用时必须先释放，避免数据被累加；内部不用，需要累加）
     * @param bool $isArr 传入的$items是否为数组，默认否（数据集）
     * @param string $levelSpare 分层符
     * @return void
     */
    public static function groupSort($items,$pid = 0, $level = 1, $clear = true, $isArr = false, $levelSpare = '_')
    {
        static $data = [];
        if ($clear) {
            $data = [];
            static $data = [];
        }
        if(!empty($levelSpare) && $level > 1) {
            $levelSpare = str_repeat($levelSpare, $level-1);
        }
        if (count($items) > 0) {
            if ($isArr) {
                foreach ($items as $key => $item) {
                    if ($item['parent_id'] == $pid) {
                        $item['level'] = $level;
                        $item['title'] = $levelSpare.$item['title'];
                        $data[] = $item;
                        self::groupSort($items, $item['id'], $level+1, false, $isArr);
                    }
                }
            } else {
                foreach ($items as $key => $item) {
                    if ($item->parent_id == $pid) {
                        $item->level = $level;
                        $item->title = $levelSpare.$item->title;
                        $data[] = $item;
                        self::groupSort($items, $item->id, $level+1, false, $isArr);
                    }
                }
            }
        }
        return $data;
    }

    /**
     * 树形排序 （拆分子集）
     *
     * @param Collection $items 数据集（非数组）
     * @param integer $pid
     * @param integer $level
     * @return void
     */
    public static function treeSort($items,$pid = 0, $level = 1)
    {
        $data = [];
        if (count($items) > 0) {
            foreach ($items as $key => $item) {
               if ($item->parent_id == $pid) {
                $item->level = $level;
                $children = self::treeSort($items, $item->id, $level+1);
                $item->children = $children;
                $data[] = $item;
               }
            }
        }
        return $data;
    }

    /**
     * 查询用户权限(登陆时更具角色更新为最新权限)
     * 可显示权限和所有权限 角色权限 + 基本权限
     *
     * @param boolean $groupId 角色ID,超级管理员(对应group_id = 1)
     * @return void
     */
    public static function userRolesList($groupId = 1)
    {
        $userRoles = [];
        $items = null;
        $order = ['sort'=>'asc'];
        if ($groupId == 1) {
            $items = self::order($order)->select();
        } else {
            $group = AuthGroup::getById($groupId);
            $rulesArr = [];
            if ($group && !empty($group['rules'])) {
                $rulesArr = array_filter(explode(',', $group['rules']));
            }
            if (count($rulesArr) >0) {
                $items = self::wherein('id', $rulesArr)->whereOr('is_base', 1)->order($order)->select();
            } else {
                $items = self::where('is_base', 1)->order($order)->select();
            }
        }
        if (empty($items) || $items->isEmpty()) {
            return $userRoles;
        }

        $allRulesId = [];
        $displayRules = [];
        $displayRulesId = [];
        foreach ($items as $key => $item) {
            $allRulesId[] = $item->id;
            if ($item->status > 0) {
                $displayRules[] = $item;
                $displayRulesId[] = $item->id;
            }
        }

        $userRoles['allRules'] = $items;
        $userRoles['allRulesId'] = $allRulesId;
        $userRoles['displayRules'] = $displayRules;
        $userRoles['displayRulesId'] = $displayRulesId;
        return $userRoles;
    } 

}