<?php

namespace app\api\model;

use think\Db;
use think\Model;

class UserGiftPack extends Model
{
    public function get_gift_pack_list($uid)
    {

        $map = [];
        $map[] = ['a.uid', '=', $uid];
        $map[] = ['a.is_use_give','=',1];
        $model = Db::name('user_gift_pack')->alias('a')->join('yy_gift b', 'a.gid = b.gid');
        $model = $model->where($map);

        $list = $model->field('a.num,b.gid,b.gift_name,b.base_image,b.gift_price,b.sort')->order('b.sort desc')->select();
        foreach ($list as $k => &$v) {
            $v['base_image'] = localpath_to_netpath($v['base_image']);
        }
        return ['code' => 200, 'msg' => '获取成功', 'data' => $list];
    }

    //num 可以为负数 减少对应背包礼物
    public function change_user_gift_pack($uid, $gid, $num = 0, $type, $remarks = '')
    {
        $TypeLable = model('admin/UserGiftPackLog')->TypeLable();
        if (!in_array($type, array_keys($TypeLable))) {
            return ['code' => 201, 'msg' => 'type参数非法', 'data' => null];
        }
        Db::startTrans();
        try {
            if ($num != 0) {
                $map = [];
                $map[] = ['uid', '=',  $uid];
                $map[] = ['gid', '=',  $gid];
                $user_gift_pack_info = db::name('user_gift_pack')->where($map)->find();

                
                $map = [];
                $map[] = ['uid', '=', $uid];
                $is_tester = db::name('user')->cache(10)->where($map)->value('is_tester');
                if (empty($user_gift_pack_info)) {
                    $data = [];
                    $data['uid'] = $uid;
                    $data['gid'] = $gid;
                    $data['total_num'] = $num;
                    $data['num'] = $num;
                    $data['is_tester'] = $is_tester;
                    $data['add_time'] = time();
                    $data['update_time'] = time();
                    $reslut = db::name('user_gift_pack')->insert($data);
                    if (!$reslut) {
                        Db::rollback();
                        return ['code' => 201, 'msg' => '请重试', 'data' => null];
                    }
                } else {
                    if ($num > 0) {
                        $map = [];
                        $map[] = ['pid', '=', $user_gift_pack_info['pid']];
                        $reslut = db::name('user_gift_pack')->where($map)->inc('total_num', $num)->inc('num', $num)->update(['update_time' => time()]);
                        if (!$reslut) {
                            Db::rollback();
                            return ['code' => 201, 'msg' => '请重试', 'data' => null];
                        }
                    } elseif ($num < 0) {
                        if (-$num > $user_gift_pack_info['num']) {
                            Db::rollback();
                            return ['code' => 201, 'msg' => '礼物数量不足', 'data' => null];
                        }
                        
                        $map = [];
                        $map[] = ['pid', '=', $user_gift_pack_info['pid']];
                        $map[] = ['num', '>=', -$num];
                        $reslut = db::name('user_gift_pack')->where($map)->inc('num', $num)->update();
                        if (!$reslut) {
                            Db::rollback();
                            return ['code' => 201, 'msg' => '请重试', 'data' => null];
                        }
                    } else {
                        Db::rollback();
                        return ['code' => 201, 'msg' => '无效礼物数量', 'data' => null];
                    }
                }
                //写入背包日志
                $data = [];
                $data['uid'] = $uid;
                $data['type'] = $type;
                $data['gid'] = $gid;
                $data['change_num'] = $num;
                $data['after_num'] = $user_gift_pack_info['num'] + $num;
                $data['is_tester'] = $is_tester;
                $data['remarks'] = $remarks;
                $data['add_time'] = time();
                $data['update_time'] = time();
                $reslut = db::name('user_gift_pack_log')->insert($data);
                if (!$reslut) {
                    Db::rollback();
                    return ['code' => 201, 'msg' => '请重试', 'data' => null];
                } else {
                    Db::commit();
                    return ['code' => 200, 'msg' => '修改成功', 'data' => null];
                }
            }
        } catch (\Exception $e) {
            // 回滚事务
            Db::rollback();
            return ['code' => 201, 'msg' => '请重试', 'data' => null];
        }
    }
}