app/Models/Cart.php - master - itp_practice/itp_backend

app/Models/Cart.php
122 строки3 KB
vivanenko
fix taps and others structure
27 май 2025, 18:06
27 май 2025, 18:068cdc7d9
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Factories\HasFactory;

/**
 * @property int $id
 * @property int $user_id
 * @property \DateTime $created_at
 * @property \DateTime $updated_at
 */
class Cart extends Model
{
    use HasFactory;

    protected $fillable = [
        'user_id',
    ];

    protected $casts = [
        'user_id' => 'integer',
    ];

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function items(): HasMany
    {
        return $this->hasMany(CartItem::class);
    }

    /**
     * Get cart total amount
     */
    public function getTotalAmount(): float
    {
        return $this->items->sum(function (CartItem $item) {
            return $item->getSubtotal();
        });
    }

    /**
     * Get cart items count
     */
    public function getItemsCount(): int
    {
        return $this->items->sum('quantity');
    }

    /**
     * Check if cart is empty
     */
    public function isEmpty(): bool
    {
        return $this->items->isEmpty();
    }

    /**
     * Clear all items from cart
     */
    public function clear(): bool
    {
        return $this->items()->delete() > 0;
    }

    /**
     * Calculate total with quantity discounts
     */
    public function getTotalWithDiscounts(): array
    {
        $subtotal = 0;
        $quantityDiscount = 0;

        foreach ($this->items as $item) {
            $itemSubtotal = $item->getSubtotal();
            $subtotal += $itemSubtotal;

            // Apply "Buy 5 get 1 free" discount
            if ($item->quantity >= 5) {
                $freeTariffs = intval($item->quantity / 5);
                $quantityDiscount += $freeTariffs * $item->price;
            }
        }

        return [
            'subtotal' => $subtotal,
            'quantity_discount' => $quantityDiscount,
            'total' => $subtotal - $quantityDiscount,
        ];
    }

    /**
     * Convert cart to order items data
     */
    public function toOrderItemsData(): array
    {
        return $this->items->map(function (CartItem $item) {
            $quantity = $item->quantity;
            $freeTariffs = $quantity >= 5 ? intval($quantity / 5) : 0;
            
            return [
                'sku' => $item->sku,
                'itemable_type' => $item->itemable_type,
                'itemable_id' => $item->itemable_id,
                'price' => $item->price,
                'quantity' => $quantity,
                'free_quantity' => $freeTariffs,
                'tax' => $item->tax,
                'shipping' => $item->shipping,
                'currency' => $item->currency,
                'subtotal' => $item->getSubtotal(),
                'discount' => $freeTariffs * $item->price,
            ];
        })->toArray();
    }
}