<?php

namespace app\model;

use think\Model;

class AdGroup extends Model
{
    // 设置当前模型对应的完整数据表名称
    protected $table = 'bps_google_ads_ad_group';

    // 设置主键
    protected $pk = 'ad_group_id';

    // 设置自动时间戳
    protected $autoWriteTimestamp = true;

    // 定义时间戳字段
    protected $createTime = 'create_at';
    protected $updateTime = 'update_at';

    // 设置字段类型和默认值
    protected $casts = [
        'ad_group_id' => 'int',
        'campaign_id' => 'int',
        'customer_id' => 'int',
        'cpc_bid_micros' => 'int',
    ];

    // 默认值设置
    protected $defaults = [
        'cpc_bid_micros' => 0, // 每次点击出价默认值为0
    ];

    // 关联 Campaign 模型（广告组属于广告活动）
    public function campaign()
    {
        return $this->belongsTo(Campaign::class, 'campaign_id', 'campaign_id');
    }

    // 关联 Customer 模型（广告组属于客户）
//    public function customer()
//    {
//        return $this->belongsTo(GoogleAdsCustomer::class, 'customer_id', 'customer_id');
//    }

    // 关联 Ad 模型（广告组包含多个广告）
    public function ads()
    {
        return $this->hasMany(Ad::class, 'ad_group_id', 'ad_group_id');
    }
}