<?php
# 关系类

namespace Invite\Lib;

use Dever;

class Relation
{
	# 只记录6级关系
	private $total = 100;

    # 通用的邀请方法：
    # uid 当前用户的上级，需要通过code邀请码来得到
    # to_uid 被邀请人，当前登录用户，注册后得到
    public function set($uid, $to_uid)
    {
        $this->setParent($uid, $to_uid);
        $this->add($uid, $to_uid, 1);

        return true;
    }

    public function setParent($uid, $to_uid, $level = 1)
    {
        $parent = $this->getParent($uid);
        if ($parent) {
            $level = $level + 1;
            if ($level > $this->total) {
                return;
            }
            $this->add($parent['uid'], $to_uid, $level);
            $this->setParent($parent['uid'], $to_uid, $level);
        }
    }

    # 更换上级 效率较高
    public function replaceParent($uid, $old_parent, $new_parent)
    {
        $info = Dever::db('invite/relation')->one(array('to_uid' => $uid, 'uid' => $old_parent));
        if ($info) {
            $state = Dever::db('invite/relation')->update(array('where_id' => $info['id'], 'uid' => $new_parent));
            if ($state) {
                $child = $this->getChild($uid, 1);
                if ($child) {
                    foreach ($child as $k => $v) {
                        $this->replaceParent($v['to_uid'], $old_parent, $new_parent);
                    }
                }
            }
        }
        return true;
    }

    # 重置上级 效率较低
    public function resetParent($uid, $parent)
    {
        Dever::db('invite/relation')->delete(array('to_uid' => $uid));
        $this->set($parent, $uid);

        $child = $this->getChild($uid, 1);
        if ($child) {
            foreach ($child as $k => $v) {

                $this->resetParent($v['to_uid'], $uid);
                /*
                $child_parent = $this->getParentAll($v['to_uid']);
                if ($child_parent) {
                    foreach ($child_parent as $k1 => $v1) {
                        if ($v1['level'] > $v['level']) {
                            Dever::db('invite/relation')->update(array('where_id' => $v['id'], 'uid' => $parent));
                        }
                    }
                }*/
            }
        }
        return true;
    }

    # 清理邀请关系
    public function dropParent($uid, $parent)
    {
        return Dever::db('invite/relation')->delete(array('to_uid' => $uid, 'uid' => $parent));
    }

    # 获取某个用户的上级数据
    public function getParent($uid, $level = 1)
    {
        return Dever::db('invite/relation')->one(array('to_uid' => $uid, 'level' => $level));
    }

    # 获取某个用户的所有上级数据
    public function getParentAll($uid, $level = false, $order = 1)
    {
        $where['to_uid'] = $uid;
        if ($level) {
            $where['level'] = $level;
        }
        if ($order == 1) {
            return Dever::db('invite/relation')->getParent($where);
        } else {
            return Dever::db('invite/relation')->getParentLevel($where);
        }
    }

    # 获取某个用户的下级数据
    public function getChild($uid, $level = false, $page = true)
    {
        $where['uid'] = $uid;
        if ($level) {
            $where['level'] = $level;
        }
        if ($page) {
            return Dever::db('invite/relation')->getChildByPage($where);
        } else {
            return Dever::db('invite/relation')->getChild($where);
        }
        
    }

    # 获取某个用户在x小时之内的下级数据
    public function getChildNum($uid, $level = 1, $time = false, $curtime = false, $method = 'count')
    {
        $where['uid'] = $uid;
        if ($level) {
            $where['level'] = $level;
        }
        if ($time) {
            $time = $time * 3600;
            if ($curtime) {
                if (strstr($curtime, '-')) {
                    $curtime = maketime($curtime);
                }
                $cur = $curtime;
            } else {
                $cur = time();
            }
            $where['end'] = $cur + $time;
        }

        if ($method == 'count') {
            $method = 'getChildCount';
        } else {
            $method = 'getChild';
        }
        
        return Dever::db('invite/relation')->$method($where);
    }

    # 插入数据
    public function add($uid, $to_uid, $level = 1)
    {   
        $data['uid'] = $uid;
        $data['to_uid'] = $to_uid;
        $data['level'] = $level;
        $data['clear'] = true;

        $info = Dever::db('invite/relation')->one($data);

        if (!$info) {
            return Dever::db('invite/relation')->insert($data);
        }
        
        return false;
    }
}