<?php

namespace App\Models\Schools;

use App\Models\BaseModel;
use App\Models\Schools\School;
use App\Models\Schools\SchoolCampus;
use App\Models\Students\StudentClass;
use App\Models\Teachers\TeacherClass;

/**
 * 班级模型
 * @package App\Models\Schools
 * @property int $id 主键ID
 * @property int $type 班级类型
 * @property string $name 班级名称
 * @property int $school_id 所属学校ID
 * @property int $campus_id 所属校区ID
 * @property int $grade_id 年级ID
 * @property int $number 班级编号
 * @property string|null $code 班级代码
 * @property int $status 状态
 * @property int $level 班级级别
 * @property int $is_open_user_login 是否开放用户登录
 * @property \Carbon\Carbon $created_at 创建时间
 * @property \Carbon\Carbon $updated_at 更新时间
 * @property \Carbon\Carbon|null $deleted_at 删除时间
 * @property int $tenant_id 租户ID
 */
class SchoolClass extends BaseModel
{
    protected $table = 'school_class';

    /**
     * 启用系统字段自动维护
     */
    protected $enableSystemFields = true;

    /**
     * 启用租户隔离
     */
    protected $enableTenantScope = true;

    protected $fillable = [
        'type',
        'name',
        'school_id',
        'campus_id',
        'grade_id',
        'number',
        'code',
        'status',
        'level',
        'is_open_user_login',
    ];

    protected $casts = [
        'type' => 'integer',
        'school_id' => 'integer',
        'campus_id' => 'integer',
        'grade_id' => 'integer',
        'number' => 'integer',
        'status' => 'integer',
        'level' => 'integer',
        'is_open_user_login' => 'integer',
    ];

    /**
     * 班级所属学校
     */
    public function school()
    {
        return $this->belongsTo(School::class, 'school_id');
    }

    /**
     * 班级所属校区
     */
    public function campus()
    {
        return $this->belongsTo(SchoolCampus::class, 'campus_id');
    }

    /**
     * 班级的学生关联
     */
    public function studentClasses()
    {
        return $this->hasMany(StudentClass::class, 'class_id');
    }

    /**
     * 班级的老师关联
     */
    public function teacherClasses()
    {
        return $this->hasMany(TeacherClass::class, 'class_id');
    }

    /**
     * 激活状态查询作用域
     */
    public function scopeActive($query)
    {
        return $query->where('status', 1);
    }
}