<?php

namespace App\Models;

use App\Casts\Price;
use Dcat\Admin\Traits\HasDateTimeFormatter;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Coupon extends Model
{
    use HasFactory;
    use HasDateTimeFormatter;

    public const TYPE_AMOUNT = 1;        // 抵扣券
    public const TYPE_DISCOUNT = 2;     // 折扣券

    protected $casts = [
        'amount' => Price::class,
        'threshold' => Price::class,
    ];

    /**
     * 此优惠券的使用范围
     */
    public function ranges()
    {
        return $this->hasMany(CouponRange::class, 'coupon_id');
    }

    /**
     * 优惠券的发放任务
     */
    public function sendTask()
    {
        return $this->hasMany(CouponSendTask::class, 'coupon_id');
    }

    /**
     * 该优惠券下是否有发放任务
     *
     * @return bool
     */
    public function hasSendTask(): bool
    {
        return $this->sendTask()->exists();
    }

    public function receiveLog()
    {
        return $this->hasMany(UserCoupon::class, 'coupon_id');
    }

    /**
     * 是否被领取过
     *
     * @return boolean
     */
    public function hasReceived()
    {
        return $this->receiveLog()->exists();
    }
}