<?php

namespace App\Models;

use App\Helpers\Numeric;
use EloquentFilter\Filterable;
use Illuminate\Database\Eloquent\Model;

class Order extends Model
{
    use Filterable;

    public const STATUS_PENDING = 0;     // 待付款
    public const STATUS_PAID = 1;        // 已付款
    public const STATUS_SHIPPED = 2;     // 已发货
    public const STATUS_COMPLETED = 9;   // 已完成
    public const STATUS_CANCELLED = 10;  // 已取消

    public const PAY_WAY_ALIPAY = 'alipay';
    public const PAY_WAY_WXPAY = 'wxpay';
    public const PAY_WAY_BALANCE = 'balance';

    /**
     * @var array
     */
    protected $attributes = [
        'reduced_amount' => 0,
        'status' => self::STATUS_PENDING,
    ];

    /**
     * @var array
     */
    protected $casts = [
        'completed_at' => 'datetime',
        'status' => 'int',
    ];

    /**
     * @var array
     */
    protected $fillable = [
        'user_id',
        'sn',
        'user_coupon_id',
        'coupon_discount_amount',
        'vip_discount_amount',
        'reduced_amount',
        'shipping_fee',
        'products_total_amount',
        'total_amount',
        'note',
        'remark',
        'pay_sn',
        'pay_way',
        'pay_at',
        'consignee_name',
        'consignee_telephone',
        'consignee_zone',
        'consignee_address',
        'status',
        'completed_at',
    ];

    /**
     * @var array
     */
    public static $payWayTexts = [
        self::PAY_WAY_ALIPAY => '支付宝',
        self::PAY_WAY_WXPAY => '微信支付',
        self::PAY_WAY_BALANCE => '余额',
    ];

    /**
     * 仅查询已过期的订单
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeExpired($query)
    {
        return $query->where('status', static::STATUS_PENDING)
                    ->where('created_at', '<=', now()->subSeconds(static::expiresAt()));
    }

    /**
     * 仅查询待付款的订单
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopePending($query)
    {
        return $query->where('status', static::STATUS_PENDING)
                    ->where('created_at', '>', now()->subSeconds(static::expiresAt()));
    }

    /**
     * 仅查询待收货的订单
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeUnreceived($query)
    {
        return $query->where('status', [static::STATUS_PAID, static::STATUS_SHIPPED]);
    }

    /**
     * 仅查询已完成的订单
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeCompleted($query)
    {
        return $query->where('status', static::STATUS_COMPLETED);
    }

    /**
     * 仅查询已取消的订单
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeCancelled($query)
    {
        return $query->where(function ($query) {
            $query->expired();
        })->orWhere('status', static::STATUS_CANCELLED);
    }

    /**
     * 属于此订单的商品
     */
    public function products()
    {
        return $this->hasMany(OrderProduct::class);
    }

    /**
     * 确认此订单是否可以被确认
     *
     * @return bool
     */
    public function isConfirmable(): bool
    {
        return in_array($this->status, [static::STATUS_PAID, static::STATUS_SHIPPED]);
    }

    /**
     * 确认此订单是否可以被取消
     *
     * @return bool
     */
    public function isCancelable(): bool
    {
        return in_array($this->status, [static::STATUS_PENDING, static::STATUS_PAID]);
    }

    /**
     * 确认此订单是否是待付款
     *
     * @return bool
     */
    public function isPending(): bool
    {
        return $this->status === static::STATUS_PENDING;
    }

    /**
     * 获取订单券优惠金额
     *
     * @return int
     */
    public function getStatusAttribute()
    {
        if ($this->attributes['status'] === static::STATUS_PENDING
            && $this->created_at->lte(now()->subSeconds(static::expiresAt()))
        ) {
            return static::STATUS_CANCELLED;
        }

        return $this->attributes['status'];
    }

    /**
     * 获取订单券优惠金额
     *
     * @return string
     */
    public function getCouponDiscountAmountFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['coupon_discount_amount'], 100, 2));
    }

    /**
     * 获取订单会员折扣金额
     *
     * @return string
     */
    public function getVipDiscountAmountFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['vip_discount_amount'], 100, 2));
    }

    /**
     * 获取订单减免金额
     *
     * @return string
     */
    public function getReducedAmountFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['reduced_amount'], 100, 2));
    }

    /**
     * 获取订单邮费
     *
     * @return string
     */
    public function getShippingFeeFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['shipping_fee'], 100, 2));
    }

    /**
     * 获取订单支付金额
     *
     * @return string
     */
    public function getTotalAmountFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['total_amount'], 100, 2));
    }

    /**
     * 获取订单商品总额
     *
     * @return string
     */
    public function getProductsTotalAmountFormatAttribute()
    {
        return Numeric::trimTrailingZero(bcdiv($this->attributes['products_total_amount'], 100, 2));
    }

    /**
     * 待支付订单过期时间
     *
     * @return int
     */
    public function getExpiresAtAttribute()
    {
        if (! $this->isPending()) {
            return 0;
        }

        return 1800;
    }

    /**
     * 待付款订单的过期时间（单位：秒）
     *
     * @return int
     */
    public static function expiresAt(): int
    {
        return 1800;
    }
}