<?php

namespace App\Models;

use App\Exceptions\ApiException;
use App\Module\Base;
use App\Tasks\PushTask;
use App\Tasks\WebSocketDialogMsgTask;
use Carbon\Carbon;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * App\Models\WebSocketDialogMsg
 *
 * @property int $id
 * @property int|null $dialog_id 对话ID
 * @property int|null $userid 发送会员ID
 * @property string|null $type 消息类型
 * @property array|mixed $msg 详细消息
 * @property int|null $read 已阅数量
 * @property int|null $send 发送数量
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @property \Illuminate\Support\Carbon|null $deleted_at
 * @property-read int|mixed $percentage
 * @property-read \App\Models\WebSocketDialog|null $webSocketDialog
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg newQuery()
 * @method static \Illuminate\Database\Query\Builder|WebSocketDialogMsg onlyTrashed()
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg query()
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereDeletedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereDialogId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereMsg($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereRead($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereSend($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereType($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereUpdatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|WebSocketDialogMsg whereUserid($value)
 * @method static \Illuminate\Database\Query\Builder|WebSocketDialogMsg withTrashed()
 * @method static \Illuminate\Database\Query\Builder|WebSocketDialogMsg withoutTrashed()
 * @mixin \Eloquent
 */
class WebSocketDialogMsg extends AbstractModel
{
    use SoftDeletes;

    protected $appends = [
        'percentage',
    ];

    protected $hidden = [
        'updated_at',
    ];

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasOne
     */
    public function webSocketDialog(): \Illuminate\Database\Eloquent\Relations\HasOne
    {
        return $this->hasOne(WebSocketDialog::class, 'id', 'dialog_id');
    }

    /**
     * 阅读占比
     * @return int|mixed
     */
    public function getPercentageAttribute()
    {
        if (!isset($this->appendattrs['percentage'])) {
            $this->generatePercentage();
        }
        return $this->appendattrs['percentage'];
    }

    /**
     * 消息格式化
     * @param $value
     * @return array|mixed
     */
    public function getMsgAttribute($value)
    {
        if (is_array($value)) {
            return $value;
        }
        $value = Base::json2array($value);
        if ($this->type === 'file') {
            $value['type'] = in_array($value['ext'], ['jpg', 'jpeg', 'png', 'gif']) ? 'img' : 'file';
            $value['path'] = Base::fillUrl($value['path']);
            $value['thumb'] = Base::fillUrl($value['thumb'] ?: Base::extIcon($value['ext']));
        }
        return $value;
    }

    /**
     * 获取占比
     * @param bool|int $increment 是否新增阅读数
     * @return int
     */
    public function generatePercentage($increment = false) {
        if ($increment) {
            $this->increment('read', is_bool($increment) ? 1 : $increment);
        }
        if ($this->read > $this->send || empty($this->send)) {
            return $this->appendattrs['percentage'] = 100;
        } else {
            return $this->appendattrs['percentage'] = intval($this->read / $this->send * 100);
        }
    }

    /**
     * 标记已送达 同时 告诉发送人已送达
     * @param $userid
     * @return bool
     */
    public function readSuccess($userid)
    {
        if (empty($userid)) {
            return false;
        }
        self::transaction(function() use ($userid) {
            $msgRead = WebSocketDialogMsgRead::whereMsgId($this->id)->whereUserid($userid)->lockForUpdate()->first();
            if (empty($msgRead)) {
                $msgRead = WebSocketDialogMsgRead::createInstance([
                    'dialog_id' => $this->dialog_id,
                    'msg_id' => $this->id,
                    'userid' => $userid,
                    'after' => 1,
                ]);
                if ($msgRead->saveOrIgnore()) {
                    $this->send = WebSocketDialogMsgRead::whereMsgId($this->id)->count();
                    $this->save();
                } else {
                    return;
                }
            }
            if (!$msgRead->read_at) {
                $msgRead->read_at = Carbon::now();
                $msgRead->save();
                $this->generatePercentage(true);
                PushTask::push([
                    'userid' => $this->userid,
                    'msg' => [
                        'type' => 'dialog',
                        'mode' => 'readed',
                        'data' => [
                            'id' => $this->id,
                            'read' => $this->read,
                            'percentage' => $this->percentage,
                        ],
                    ]
                ]);
            }
        });
        return true;
    }

    /**
     * 删除消息
     * @return void
     */
    public function deleteMsg()
    {
        $send_dt = Carbon::parse($this->created_at)->addDay();
        if ($send_dt->lt(Carbon::now())) {
            throw new ApiException('已超过24小时，此消息不能撤回');
        }
        AbstractModel::transaction(function() {
            $deleteRead = WebSocketDialogMsgRead::whereMsgId($this->id)->whereNull('read_at')->delete();    // 未阅读记录不需要软删除，直接删除即可
            $this->delete();
            //
            $last_msg = null;
            if ($this->webSocketDialog) {
                $last_msg = WebSocketDialogMsg::whereDialogId($this->dialog_id)->orderByDesc('id')->first();
                $this->webSocketDialog->last_at = $last_msg->created_at;
                $this->webSocketDialog->save();
            }
            //
            $dialog = WebSocketDialog::find($this->dialog_id);
            if ($dialog) {
                $userids = $dialog->dialogUser->pluck('userid')->toArray();
                PushTask::push([
                    'userid' => $userids,
                    'msg' => [
                        'type' => 'dialog',
                        'mode' => 'delete',
                        'data' => [
                            'id' => $this->id,
                            'dialog_id' => $this->dialog_id,
                            'last_msg' => $last_msg,
                            'update_read' => $deleteRead ? 1 : 0
                        ],
                    ]
                ]);
            }
        });
    }

    /**
     * 处理文本消息内容，用于发送前
     * @param $text
     * @param $dialog_id
     * @return mixed|string|string[]
     */
    public static function formatMsg($text, $dialog_id)
    {
        // 图片 [:IMAGE:className:width:height:src:alt:]
        preg_match_all("/<img\s*src=\"data:image\/(png|jpg|jpeg);base64,(.*?)\"(.*?)>(<\/img>)*/s", $text, $matchs);
        foreach ($matchs[2] as $key => $base64) {
            $tmpPath = "uploads/chat/" . date("Ym") . "/" . $dialog_id . "/";
            Base::makeDir(public_path($tmpPath));
            $tmpPath .= md5s($base64) . "." . $matchs[1][$key];
            if (file_put_contents(public_path($tmpPath), base64_decode($base64))) {
                $imagesize = getimagesize(public_path($tmpPath));
                $text = str_replace($matchs[0][$key], "[:IMAGE:browse:{$imagesize[0]}:{$imagesize[1]}:{$tmpPath}::]", $text);
            }
        }
        // 表情图片
        preg_match_all("/<img class=\"emoticon\"(.*?)>/s", $text, $matchs);
        foreach ($matchs[1] as $key => $str) {
            preg_match("/data-asset=\"(.*?)\"/", $str, $matchAsset);
            preg_match("/data-name=\"(.*?)\"/", $str, $matchName);
            if (file_exists(public_path($matchAsset[1]))) {
                $imagesize = getimagesize(public_path($matchAsset[1]));
                $text = str_replace($matchs[0][$key], "[:IMAGE:emoticon:{$imagesize[0]}:{$imagesize[1]}:{$matchAsset[1]}:{$matchName[1]}:]", $text);
            }
        }
        // @成员、#任务
        preg_match_all("/<span class=\"mention\"(.*?)>.*?<\/span>.*?<\/span>.*?<\/span>/s", $text, $matchs);
        foreach ($matchs[1] as $key => $str) {
            preg_match("/data-denotation-char=\"(.*?)\"/", $str, $matchChar);
            preg_match("/data-id=\"(.*?)\"/", $str, $matchId);
            preg_match("/data-value=\"(.*?)\"/", $str, $matchValye);
            $text = str_replace($matchs[0][$key], "[:{$matchChar[1]}:{$matchId[1]}:{$matchValye[1]}:]", $text);
        }
        // 过滤标签
        $text = strip_tags($text, '<p>');
        $text = preg_replace("/\<p.*?\>/i", "<p>", $text);
        $text = preg_replace("/\[:IMAGE:(.*?):(.*?):(.*?):(.*?):(.*?):\]/i", "<img class=\"$1\" width=\"$2\" height=\"$3\" src=\"{{RemoteURL}}$4\" alt=\"$5\"/>", $text);
        $text = preg_replace("/\[:@:(.*?):(.*?):\]/i", "<span class=\"mention user\" data-id=\"$1\">@$2</span>", $text);
        return preg_replace("/\[:#:(.*?):(.*?):\]/i", "<span class=\"mention task\" data-id=\"$1\">#$2</span>", $text);
    }

    /**
     * 发送消息
     * @param int $dialog_id    会话ID（即 聊天室ID）
     * @param string $type      消息类型
     * @param array $msg        发送的消息
     * @param int $sender       发送的会员ID（默认自己，0为系统）
     * @return array
     */
    public static function sendMsg($dialog_id, $type, $msg, $sender = 0)
    {
        $dialogMsg = self::createInstance([
            'userid' => $sender ?: User::userid(),
            'type' => $type,
            'msg' => $msg,
            'read' => 0,
        ]);
        AbstractModel::transaction(function () use ($dialog_id, $msg, $dialogMsg) {
            $dialog = WebSocketDialog::find($dialog_id);
            if (empty($dialog)) {
                throw new ApiException('获取会话失败');
            }
            $dialog->last_at = Carbon::now();
            $dialog->save();
            $dialogMsg->send = 1;
            $dialogMsg->dialog_id = $dialog->id;
            $dialogMsg->save();
        });
        Task::deliver(new WebSocketDialogMsgTask($dialogMsg->id));
        return Base::retSuccess('发送成功', $dialogMsg);
    }
}