<?php
/**
 * 系统消息.
 *
 * @author jim <jim458734573@gmail.com>
 * @date   2020-01-31 10:39:38
 */
declare(strict_types=1);

namespace App\Repositories;

use App\Constants\SysMessageConstant;
use App\Model\Mongo\MessageModel;
use App\Model\SysMessageModel;
use Carbon\Carbon;
use KZ2\Repositories\Model\Repository;
use Psr\SimpleCache\CacheInterface;

class SysMessageRepository extends Repository
{
    public function model()
    {
        return SysMessageModel::class;
    }

    public function getTopLists()
    {
        $cacheRepo = make(CacheInterface::class);
        $cacheSeconds = 3 * 60 * 60;
        $arrItems = $cacheRepo->remember(
            SysMessageConstant::CACHE_KEY_LAST_TOP,
            $cacheSeconds,
            function () {
                $nowDate = Carbon::now()->subMinutes(15)->toDateTimeString();
                $arrItems = [];
                $lists = SysMessageModel::query()
                    ->whereDate('expired_at', '>=', $nowDate)
                    // 排序是升序，主要方便逐步insert到用户消息集合里.
                    ->orderBy('created_at', 'ASC')
                    ->take(SysMessageConstant::LAST_TOP_NUM)->get();
                if ($lists->count()) {
                    $arrItems = $lists->toArray();
                }

                return $arrItems;
        });

        return $arrItems;
    }

    /**
     * 针对单个用户初始化他的系统消息.
     * @param $userCode
     * @return bool
     */
    public function initForUser($userCode)
    {
        $nowDate = toMongoIsoDate(Carbon::now());
        $arrSys = $this->getTopLists();
        if (!empty($arrSys)) {
            foreach ($arrSys as $item) {
                $filters = [
                    // 有索引，必须是这个顺序.
                    'receive_uid' => $userCode,
                    'from_type' => 'sys',
                    'sys_msg_uid' => $item['uid'],
                ];
                $options = [];
                $msgObj = make(MessageModel::class)->db()->findOne($filters, $options);
                if (empty($msgObj)) {
                    $sysCreatedAt = Carbon::parse($item['created_at']);
                    $createdAt = toMongoIsoDate($sysCreatedAt);
                    // 没有则创建, 系统消息是不能删除的.
                    $setarr = [
                        'subject' => $item['subject'],
                        'struct_type' => $item['struct_type'],
                        'receive_uid' => $userCode,
                        'receive_type' => 'user',
                        'from_uid' => '',
                        'from_type' => 'sys',
                        'sys_msg_uid' => $item['uid'],
                        'content' => $item['content'],
                        'created_at' => $createdAt,
                        'updated_at' => $nowDate,
                        'read_at' => null,  // null代表未阅读
                    ];
                    make(MessageModel::class)->db()->insertOne($setarr);
                }
            }
        }

        return true;
    }

    /**
     * 用户的系统消息分页.
     * @param string $userCode 用户UID
     * @param int $page  当前页
     * @param int $pageSize  分页尺码
     * @return array
     */
    public function getSysPagesByUserCode($userCode, $page = 1, $pageSize = 20)
    {
        $page = format_page($page);
        $pageSize = intval($pageSize);
        $filters = [
            'receive_uid' => $userCode,
            'from_type' => 'sys',
        ];
        $optionsBase = [
            'sort' => [
                'created_at' => -1,   // 时间降序
            ],
        ];
        $countOptions = $optionsBase;
        $pagesOptions = $optionsBase;
        $pagesOptions['limit'] = $pageSize;
        $result = [
            'total' => 0,
            'data' => [],
            'current_page' => $page,
            'per_page' => $pageSize,
        ];
        $count =  make(MessageModel::class)->db()->countDocuments($filters, $countOptions);
        $cursor = make(MessageModel::class)->db()->find($filters, $pagesOptions);
        if ($count > 0) {
            $result['data'] = $cursor->toArray();
        }
        $result['total'] = $count;

        return $result;
    }

    /**
     * 创建一个系统消息
     * @param array $setarr
     * @return \Hyperf\Database\Model\Builder|\Hyperf\Database\Model\Model
     */
    public function createOne(array $setarr)
    {
        if (empty($setarr['expired_at'])) {
            $exipredAt = Carbon::now()->addMonths(1)->toDateTimeString();
        } else {
            $exipredAt = $setarr['expired_at'];
        }
        $item = [
            'subject' => data_get($setarr, 'subject', ''),
            'struct_type' => data_get($setarr, 'struct_type', 'text'),
            'content' => data_get($setarr, 'content', []),
            'expired_at' => $exipredAt,
        ];
        $obj = SysMessageModel::query()->create($item);
        if ($obj) {
            $this->clearTopCache();
        }

        return $obj;
    }

    /**
     * 更新一个系统消息.
     * @param string $uid
     * @param array $setarr
     * @return mixed|array
     */
    public function updateOne(string $uid, array $setarr)
    {
        $resultInfo = [
            'is_ok' => true,
            'old' => null,
            'new' => null,
        ];
        $item = SysMessageModel::query()->where(['uid' => $uid])->firstOrFail();
        $resultInfo['old'] = clone $item;
        if (isset($setarr['subject'])) {
            $item->subject = $setarr['subject'];
        }
        if (isset($setarr['struct_type'])) {
            $item->struct_type = $setarr['struct_type'];
        }
        if (isset($setarr['content'])) {
            $item->content = $setarr['content'];
        }
        if (isset($setarr['expired_at'])) {
            $item->expired_at = $setarr['expired_at'];
        }

        $result = $item->save();
        if ($result) {
            $resultInfo['new'] = $item;
            $this->clearTopCache();
        } else {
            $resultInfo['is_ok'] = false;
        }
        return $resultInfo;
    }

    /**
     * 删除一个系统消息.
     * @param string $uid
     * @return bool|int|mixed|null
     * @throws mixed|array
     */
    public function deleteOne(string $uid)
    {
        $resultInfo = [
            'is_ok' => true,
            'old' => null,
            'new' => null,
        ];
        $item = SysMessageModel::query()->where(['uid' => $uid])->firstOrFail();
        $resultInfo['old'] = clone $item;
        $result = $item->delete();
        if ($result) {
            $this->clearTopCache();
        } else {
            $resultInfo['is_ok'] = false;
        }

        return $resultInfo;
    }

    /**
     * 删除多个系统消息, 但是用户消息集合会保留.
     * @param mixed $uids
     * @return array
     * @throws \Psr\SimpleCache\InvalidArgumentException
     */
    public function deleteMulti($uids)
    {
        $result = [
            'total' => 0,
            'success_uids' => [],
            'fail_uids' => [],
        ];
        $arrIds = $uids;
        if (is_string($uids)) {
            $arrIds = [$uids];
        }
        $result['total'] = count($arrIds);
        if (!empty($arrIds)) {
            foreach ($arrIds as $uid) {
                $item = SysMessageModel::query()->where(['uid' => $uid])->first();
                if ($item) {
                    if ($item->delete()) {
                        $result['success_uids'][] = $uid;
                    }
                } else {
                    $result['fail_uids'][] = $uid;
                }
            }
        }

        $this->clearTopCache();

        return $result;
    }

    /**
     * 清除靠前的系统消息缓存.
     * @return bool
     * @throws \Psr\SimpleCache\InvalidArgumentException
     */
    public function clearTopCache()
    {
        $cacheRepo = make(CacheInterface::class);
        $cacheRepo->delete(SysMessageConstant::CACHE_KEY_LAST_TOP);

        return true;
    }
}