<?php

namespace app\common\model;

use support\Model;

class MessageNotifications extends Model
{
    /**
     * The connection name for the model.
     *
     * @var string|null
     */
    protected $connection = 'mysql';
    
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'message_notifications';

    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * Indicates if the model should be timestamped.
     *
     * @var bool
     */
    public $timestamps = false;
    
    // const UPDATED_AT = false;
    
    // protected $dateFormat = 'U';

    /**
     * 允许自动填充模型字段
     */
    protected $fillable = ['id', 'msg_no', 'sender_id', 'sender_type', 'recipient', 'title', 'content', 'scene', 'push_method', 'created_at'];

    /**
     * 不允许自动填充模型字段
     */
    protected $guarded = [];

    // 消息创建
    const SCENE = [
        self::SCENE0 => '系统消息',
        self::SCENE1 => '系统通知'
    ];
    const SCENE0 = 0;
    const SCENE1 = 1;

    // 推送方式
    const PUSH_METHOD = [
        self::PUSH_METHOD0 => '系统推送',
        self::PUSH_METHOD1 => '手动推送'
    ];
    const PUSH_METHOD0 = 0;
    const PUSH_METHOD1 = 1;


    /**
     * 关联用户消息状态 (一对多)
     */
    public function userStatuses()
    {
        return $this->hasMany(MessageUserStatus::class, 'msg_id', 'id');
    }

    /**
     * 获取已读用户状态
     */
    public function readUsers()
    {
        return $this->hasMany(MessageUserStatus::class, 'msg_id', 'id')
            ->where('status', 1);
    }

    /**
     * 获取未读用户状态
     */
    public function unreadUsers()
    {
        return $this->hasMany(MessageUserStatus::class, 'msg_id', 'id')
            ->where('status', 0);
    }

    public function sender()
    {
        return $this->belongsTo(User::class, 'sender_id', 'id');
    }
}