Code Coverage
 
Lines
Functions and Methods
Classes and Traits
Total
100.00%
13 / 13
100.00%
3 / 3
 CRAP
100.00%
1 / 1
CartTotals
100.00%
13 / 13
100.00%
3 / 3
 4
100.00%
1 / 1
 __construct
100.00%
1 / 1
100.00%
1 / 1
 1
 grandTotal
100.00%
2 / 2
100.00%
1 / 1
 2
 toArray
100.00%
10 / 10
100.00%
1 / 1
 1
1<?php
2
3namespace App\Services\Cart;
4
5/**
6 * One immutable snapshot of what a cart costs. Produced by CartService and
7 * reused by the cart drawer, checkout, order creation and the API so the
8 * numbers can never drift between them.
9 */
10class CartTotals
11{
12    public function __construct(
13        public readonly float $subtotal = 0,
14        public readonly float $discount = 0,
15        public readonly float $tax = 0,
16        public readonly float $shipping = 0,
17        public readonly int $itemCount = 0,
18        public readonly ?string $couponCode = null,
19        public readonly bool $taxInclusive = false,
20    ) {}
21
22    public function grandTotal(): float
23    {
24        // exclusive tax is added on top; inclusive tax is already in the subtotal
25        $base = $this->subtotal - $this->discount + $this->shipping;
26
27        return round($this->taxInclusive ? $base : $base + $this->tax, 2);
28    }
29
30    public function toArray(): array
31    {
32        return [
33            'subtotal' => round($this->subtotal, 2),
34            'discount' => round($this->discount, 2),
35            'tax' => round($this->tax, 2),
36            'shipping' => round($this->shipping, 2),
37            'grand_total' => $this->grandTotal(),
38            'item_count' => $this->itemCount,
39            'coupon_code' => $this->couponCode,
40            'tax_inclusive' => $this->taxInclusive,
41        ];
42    }
43}