Output:
Chunk ID: 69caee
Wall time: 5.2604 seconds
Process exited with code 1
Original token count: 3082
Output:

   INFO  Configuration cache cleared successfully.

  ............................................................................
  ............................................................................
  ............................................................................
  ...............................

  ──────────────────────────────────────────────────────────────────── Laravel
    PASS   ......................................................... 259 files

   PASS  Tests\Unit\ExampleTest
  ✓ that true is true                                                    0.08s

   PASS  Tests\Unit\Services\CartServiceTest
  ✓ creates a cart with store currency and version one                   0.10s
  ✓ adds and merges lines for the same variant                           0.02s
  ✓ increments version on add update and remove mutations                0.01s
  ✓ removes a line when updated quantity is zero                         0.01s
  ✓ rejects adding variants from inactive products                       0.01s
  ✓ rejects add line when inventory is insufficient for deny policy      0.01s

   PASS  Tests\Unit\Services\DiscountServiceTest
  ✓ validates an active discount code case insensitively                 0.01s
  ✓ rejects unknown discount codes                                       0.01s
  ✓ rejects expired discounts                                            0.01s
  ✓ rejects discounts that reached usage limit                           0.01s
  ✓ rejects discounts when minimum purchase is not met                   0.01s
  ✓ calculates percent discount amounts deterministically                0.01s
  ✓ caps fixed discount amounts at subtotal                              0.01s

   PASS  Tests\Unit\Services\HandleGeneratorTest
  ✓ generates a slug from title when no collision exists                 0.01s
  ✓ appends incrementing numeric suffixes on collisions                  0.01s
  ✓ scopes uniqueness checks per store                                   0.01s
  ✓ ignores the current record when exclude id is provided               0.01s
  ✓ normalizes special characters into url safe handles                  0.01s

   PASS  Tests\Unit\Services\InventoryServiceTest
  ✓ checks availability for deny policy using available quantity         0.01s
  ✓ allows availability check for continue policy even when stock is in… 0.01s
  ✓ reserve increments quantity reserved                                 0.01s
  ✓ reserve throws when deny policy does not have enough available inve… 0.01s
  ✓ release decrements reserved quantity                                 0.01s
  ✓ commit decrements on hand and reserved quantities                    0.01s
  ✓ restock increments on hand quantity                                  0.01s

   PASS  Tests\Unit\Services\PricingEngineTest
  ✓ calculates subtotal and total for a checkout without shipping or di… 0.01s
  ✓ caps fixed discount so totals never go negative                      0.01s
  ✓ returns identical outputs for identical inputs                       0.01s

   PASS  Tests\Feature\AdminWeb\AdminWebPagesTest
  ✓ admin login page renders and authenticated admin can login           0.07s
  ✓ authenticated admin can open core admin pages                        0.07s
  ✓ authenticated admin can create update and archive a product via adm… 0.03s
  ✓ product web form validates required fields                           0.02s
  ✓ authenticated admin can create update and delete a collection via a… 0.03s
  ✓ authenticated admin can create update and delete a discount via adm… 0.02s
  ✓ authenticated admin can create update and delete a page via admin w… 0.02s

   PASS  Tests\Feature\Api\AdminApiAuthTest
  ✓ admin me endpoint requires sanctum authentication                    0.01s
  ✓ authenticated admin can access admin me endpoint                     0.01s
  ✓ admin products collections and discounts endpoints require auth      0.01s
  ✓ authenticated admin can access products collections and discounts e… 0.02s

   PASS  Tests\Feature\Api\StorefrontCartApiTest
  ✓ supports the storefront cart flow create add update and remove       0.03s
  ✓ returns 404 for unknown cart ids                                     0.01s
  ✓ returns 409 when cart version does not match current version         0.01s
  ✓ returns 422 when requested quantity exceeds deny policy inventory    0.01s

   PASS  Tests\Feature\Api\StorefrontCatalogApiTest
  ✓ search returns matching active products and logs search query        0.01s
  ✓ search returns empty data for unknown terms                          0.01s
  ✓ analytics ingestion accepts valid event batches and stores events    0.01s
  ✓ analytics ingestion rejects invalid event payloads                   0.01s

   FAIL  Tests\Feature\Api\StorefrontCheckoutApiTest
  ✓ supports checkout transition flow from started to completed          0.04s
  ✓ pay endpoint is idempotent for repeated requests on the same checko… 0.04s
  ✓ returns 409 for invalid checkout state transition                    0.01s
  ⨯ applies a valid discount code to checkout                            0.02s
  ✓ returns 422 for invalid discount code                                0.01s
  ✓ returns 404 for unknown checkout ids                                 0.01s

   PASS  Tests\Feature\Auth\AdminAuthTest
  ✓ admin protected endpoint requires authentication                     0.01s
  ✓ authenticated admin user can access admin protected endpoint         0.02s
  ✓ rate limits repeated admin login attempts to five per minute         0.01s

   PASS  Tests\Feature\Auth\AuthenticationTest
  ✓ login screen can be rendered                                         0.02s
  ✓ users can authenticate using the login screen                        0.02s
  ✓ users can not authenticate with invalid password                     0.01s
  ✓ users with two factor enabled are redirected to two factor challeng… 0.01s
  ✓ users can logout                                                     0.01s

   PASS  Tests\Feature\Auth\CustomerAuthTest
  ✓ customer auth guard is configured                                    0.01s
  ✓ customer protected endpoint redirects guests to storefront login     0.01s
  ✓ rate limits repeated customer login attempts to five per minute      0.01s

   PASS  Tests\Feature\Auth\EmailVerificationTest
  ✓ email verification screen can be rendered                            0.01s
  ✓ email can be verified                                                0.01s
  ✓ email is not verified with invalid hash                              0.01s
  ✓ already verified user visiting verification link is redirected with… 0.01s

   PASS  Tests\Feature\Auth\PasswordConfirmationTest
  ✓ confirm password screen can be rendered                              0.02s

   PASS  Tests\Feature\Auth\PasswordResetTest
  ✓ reset password link screen can be rendered                           0.01s
  ✓ reset password link can be requested                                 0.22s
  ✓ reset password screen can be rendered                                0.23s
  ✓ password can be reset with valid token                               0.23s

   PASS  Tests\Feature\Auth\RegistrationTest
  ✓ registration screen can be rendered                                  0.02s
  ✓ new users can register                                               0.01s

   PASS  Tests\Feature\Auth\TwoFactorChallengeTest
  ✓ two factor challenge redirects to login when not authenticated       0.01s
  ✓ two factor challenge can be rendered                                 0.01s

   PASS  Tests\Feature\DashboardTest
  ✓ guests are redirected to the login page                              0.01s
  ✓ authenticated users can visit the dashboard                          0.03s

   PASS  Tests\Feature\ExampleTest
  ✓ it returns a successful response                                     0.01s

   PASS  Tests\Feature\Settings\PasswordUpdateTest
  ✓ password can be updated                                              0.07s
  ✓ correct password must be provided to update password                 0.05s

   PASS  Tests\Feature\Settings\ProfileUpdateTest
  ✓ profile page is displayed                                            0.04s
  ✓ profile information can be updated                                   0.04s
  ✓ email verification status is unchanged when email address is unchan… 0.04s
  ✓ user can delete their account                                        0.02s
  ✓ correct password must be provided to delete account                  0.03s

   PASS  Tests\Feature\Settings\TwoFactorAuthenticationTest
  ✓ two factor settings page can be rendered                             0.03s
  ✓ two factor settings page requires password confirmation when enable… 0.01s
  ✓ two factor settings page returns forbidden response when two factor… 0.01s
  ✓ two factor authentication disabled when confirmation abandoned betw… 0.02s

   PASS  Tests\Feature\Storefront\StorefrontWebPagesTest
  ✓ storefront core pages render with tenant host                        0.04s
  ✓ customer can register and access account pages                       0.03s
  ✓ customer login and logout flow works                                 0.02s
  ✓ product add to cart form creates a guest cart line                   0.02s
  ✓ product add to cart form returns validation errors for unknown vari… 0.02s
  ✓ cart line quantity update and remove forms mutate lines              0.02s
  ✓ cart line remove form shows errors for unknown lines                 0.02s
  ✓ cart can start checkout from cart page                               0.02s
  ✓ cart checkout start fails for empty carts                            0.02s
  ✓ checkout step forms can set address shipping payment discount and c… 0.05s
  ✓ checkout forms return errors for invalid discount and invalid payme… 0.02s
  ✓ customer can create update and delete addresses from account         0.02s
  ✓ address form validates required fields                               0.02s

   PASS  Tests\Feature\Tenancy\StoreIsolationTest
  ✓ scopes product-like queries to the current store                     0.01s
  ✓ scopes order-like queries to the current store                       0.01s
  ✓ automatically sets store_id on model creation                        0.01s
  ✓ prevents accessing another store records via direct id               0.01s
  ✓ allows cross-store access when store scope is removed                0.01s

   PASS  Tests\Feature\Tenancy\TenantResolutionTest
  ✓ returns 404 for unknown hostname                                     0.01s
  ✓ returns 503 for suspended store on storefront requests               0.01s
  ────────────────────────────────────────────────────────────────────────────
   FAILED  Tests\Feature\Api\StorefrontCheckoutApiTest > applies a valid dis…
  Expected response status code [200] but received 409.
Failed asserting that 409 is identical to 200.

  at tests/Feature/Api/StorefrontCheckoutApiTest.php:364
    360▕
    361▕     $this->postJson(
    362▕         storefrontCheckoutApiUrl($hostname, "/api/storefront/v1/checkouts/{$checkout->id}/apply-discount"),
    363▕         ['code' => 'WELCOME10'],
  ➜ 364▕     )->assertOk()
    365▕         ->assertJsonPath('discount_code', 'WELCOME10');
    366▕ });
    367▕
    368▕ test('returns 422 for invalid discount code', function (): void {

  Tests:    1 failed, 111 passed (548 assertions)
  Duration: 2.87s

Script @php artisan test handling the test event returned with error code 1


Output:
Chunk ID: 05f786
Wall time: 0.6670 seconds
Process exited with code 0
Original token count: 73
Output:
  0/42 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░]   0% 42/42 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 [OK] No errors


Output:
Chunk ID: f10531
Wall time: 0.4417 seconds
Process exited with code 0
Original token count: 124
Output:
   0/175 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░]   0%
 175/175 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 -------------------- -----
  Report
 -------------------- -----
  Violations           0
  Skipped violations   0
  Uncovered            849
  Allowed              777
  Warnings             0
  Errors               0
 -------------------- -----


# Collaboration Mode: Default

You are now in Default mode. Any previous instructions for other modes (e.g. Plan mode) are no longer active.

Your active mode changes only when new developer instructions with a different `<collaboration_mode>...</collaboration_mode>` change it; user requests or tool descriptions do not change mode by themselves. Known mode names are Default and Plan.

## request_user_input availability

The `request_user_input` tool is unavailable in Default mode. If you call it while in Default mode, it will return an error.

If a decision is necessary and cannot be discovered from local context, ask the user directly. However, in Default mode you should strongly prefer executing the user's request rather than stopping to ask questions.

Summary: auto

# Shop

Self-contained e-commerce platform with multi-tenant support, product catalog, cart, checkout, payments (mock PSP), order management, customer accounts, and an admin panel.

## Tech Stack

- PHP 8.4 / Laravel 12
- Livewire v4 / Flux UI Free v2
- Tailwind CSS v4
- SQLite
- Pest v4

## Specs

The complete specification is in `specs/`. Start with `specs/09-IMPLEMENTATION-ROADMAP.md` for the build order, then reference the other files as needed:

- `specs/01-DATABASE-SCHEMA.md` - Database schema
- `specs/02-API-ROUTES.md` - Routes and API endpoints
- `specs/03-ADMIN-UI.md` - Admin panel
- `specs/04-STOREFRONT-UI.md` - Storefront
- `specs/05-BUSINESS-LOGIC.md` - Business logic
- `specs/06-AUTH-AND-SECURITY.md` - Auth and security
- `specs/07-SEEDERS-AND-TEST-DATA.md` - Seeders and test data
- `specs/08-PLAYWRIGHT-E2E-PLAN.md` - E2E browser tests
- `specs/09-IMPLEMENTATION-ROADMAP.md` - Implementation roadmap

## Skills
A skill is a set of local instructions to follow that is stored in a `SKILL.md` file. Below is the list of skills that can be used. Each entry includes a name, description, and file path so you can open the source for full instructions when using a specific skill.
### Available skills
- skill-creator: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations. (file: /Users/fabianwesner/.codex/skills/.system/skill-creator/SKILL.md)
- skill-installer: Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos). (file: /Users/fabianwesner/.codex/skills/.system/skill-installer/SKILL.md)
### How to use skills
- Discovery: The list above is the skills available in this session (name + description + file path). Skill bodies live on disk at the listed paths.
- Trigger rules: If the user names a skill (with `$SkillName` or plain text) OR the task clearly matches a skill's description shown above, you must use that skill for that turn. Multiple mentions mean use them all. Do not carry skills across turns unless re-mentioned.
- Missing/blocked: If a named skill isn't in the list or the path can't be read, say so briefly and continue with the best fallback.
- How to use a skill (progressive disclosure):
  1) After deciding to use a skill, open its `SKILL.md`. Read only enough to follow the workflow.
  2) When `SKILL.md` references relative paths (e.g., `scripts/foo.py`), resolve them relative to the skill directory listed above first, and only consider other paths if needed.
  3) If `SKILL.md` points to extra folders such as `references/`, load only the specific files needed for the request; don't bulk-load everything.
  4) If `scripts/` exist, prefer running or patching them instead of retyping large code blocks.
  5) If `assets/` or templates exist, reuse them instead of recreating from scratch.
- Coordination and sequencing:
  - If multiple skills apply, choose the minimal set that covers the request and state the order you'll use them.
  - Announce which skill(s) you're using and why (one short line). If you skip an obvious skill, say why.
- Context hygiene:
  - Keep context small: summarize long sections instead of pasting them; only load extra files when needed.
  - Avoid deep reference-chasing: prefer opening only files directly linked from `SKILL.md` unless you're blocked.
  - When variants exist (frameworks, providers, domains), pick only the relevant reference file(s) and note that choice.
- Safety and fallback: If a skill can't be applied cleanly (missing files, unclear instructions), state the issue, pick the next-best approach, and continue.


**Investigating 409 error cause**


./vendor/bin/pest tests/Feature/Api/StorefrontCheckoutApiTest.php --filter "applies a valid discount code to checkout" -v


Output:
Chunk ID: c6b4d6
Wall time: 0.4189 seconds
Process exited with code 1
Original token count: 338
Output:

   FAIL  Tests\Feature\Api\StorefrontCheckoutApiTest
  ⨯ applies a valid discount code to checkout                            0.32s
  ────────────────────────────────────────────────────────────────────────────
   FAILED  Tests\Feature\Api\StorefrontCheckoutApiTest > applies a valid discount code to checkout
  Expected response status code [200] but received 409.
Failed asserting that 409 is identical to 200.

  at vendor/laravel/framework/src/Illuminate/Testing/TestResponseAssert.php:45
     41▕      */
     42▕     public function __call($name, $arguments)
     43▕     {
     44▕         try {
  ➜  45▕             Assert::$name(...$arguments);
     46▕         } catch (ExpectationFailedException $e) {
     47▕             throw $this->injectResponseContext($e);
     48▕         }
     49▕     }

  1   vendor/laravel/framework/src/Illuminate/Testing/TestResponseAssert.php:45
  2   vendor/laravel/framework/src/Illuminate/Testing/TestResponse.php:174
  3   vendor/laravel/framework/src/Illuminate/Testing/Concerns/AssertsStatusCodes.php:16
  4   tests/Feature/Api/StorefrontCheckoutApiTest.php:364

  Tests:    1 failed (1 assertions)
  Duration: 0.40s


Summary: auto


**Investigating unexpected 409 cause**


sed -n '1,260p' app/Http/Controllers/Api/Concerns/ResolvesApiContext.php


Output:
Chunk ID: 0e840c
Wall time: 0.0511 seconds
Process exited with code 0
Original token count: 531
Output:
<?php

namespace App\Http\Controllers\Api\Concerns;

use App\Models\Store;
use App\Support\Tenant\CurrentStore;
use BackedEnum;
use Carbon\CarbonInterface;
use Illuminate\Http\Request;

trait ResolvesApiContext
{
    protected function currentStore(Request $request): CurrentStore
    {
        $attributeStore = $request->attributes->get('current_store');

        if ($attributeStore instanceof CurrentStore) {
            return $attributeStore;
        }

        if (app()->bound(CurrentStore::class)) {
            $containerStore = app(CurrentStore::class);

            if ($containerStore instanceof CurrentStore) {
                return $containerStore;
            }
        }

        abort(404, 'Store not found.');
    }

    protected function currentStoreId(Request $request): int
    {
        return $this->currentStore($request)->id;
    }

    protected function scopedStoreId(Request $request, int|string|null $routeStoreId = null): int
    {
        $currentStoreId = $this->currentStoreId($request);

        if ($routeStoreId === null) {
            return $currentStoreId;
        }

        if ((int) $routeStoreId !== $currentStoreId) {
            abort(404, 'Store not found.');
        }

        return $currentStoreId;
    }

    protected function currentStoreModel(Request $request): Store
    {
        $store = Store::query()->find($this->currentStoreId($request));

        if (! $store instanceof Store) {
            abort(404, 'Store not found.');
        }

        return $store;
    }

    protected function resolveService(string $serviceClass): ?object
    {
        if (! class_exists($serviceClass)) {
            return null;
        }

        try {
            $service = app($serviceClass);

            return is_object($service) ? $service : null;
        } catch (\Throwable) {
            return null;
        }
    }

    protected function enumValue(mixed $value): mixed
    {
        return $value instanceof BackedEnum ? $value->value : $value;
    }

    protected function iso(?CarbonInterface $date): ?string
    {
        return $date?->toISOString();
    }
}


**Tracing 409 error cause**


sed -n '1,340p' app/Services/PricingEngine.php


Output:
Chunk ID: 37bdc7
Wall time: 0.0516 seconds
Process exited with code 0
Original token count: 1726
Output:
<?php

declare(strict_types=1);

namespace App\Services;

use App\Exceptions\InvalidCheckoutStateException;
use App\Models\Cart;
use App\Models\CartLine;
use App\Models\Checkout;
use App\Models\TaxSetting;
use App\ValueObjects\DiscountCalculationResult;
use App\ValueObjects\PricingResult;
use App\ValueObjects\TaxCalculationResult;
use Illuminate\Support\Facades\DB;

final class PricingEngine
{
    public function __construct(
        private readonly DiscountService $discountService,
        private readonly ShippingCalculator $shippingCalculator,
        private readonly TaxCalculator $taxCalculator,
    ) {}

    public function calculate(Checkout $checkout): PricingResult
    {
        /** @var PricingResult $result */
        $result = DB::transaction(function () use ($checkout): PricingResult {
            $lockedCheckout = $this->lockCheckout($checkout);

            $cart = $lockedCheckout->cart;
            $this->recalculateLineSubtotals($cart);

            $subtotal = $this->subtotal($cart);
            $discountResult = $this->calculateDiscount($lockedCheckout);

            $this->discountService->applyToCartLines($cart, $discountResult);

            $shippingAmount = $this->shippingAmount($lockedCheckout, $cart, $discountResult);
            $taxResult = $this->taxResult($lockedCheckout, $cart, $shippingAmount);

            $total = max(0, ($subtotal - $discountResult->amount) + $shippingAmount + $taxResult->totalAmount);

            $pricingResult = new PricingResult(
                subtotal: $subtotal,
                discount: $discountResult->amount,
                shipping: $shippingAmount,
                taxLines: $taxResult->taxLines,
                taxTotal: $taxResult->totalAmount,
                total: $total,
                currency: (string) $cart->currency,
                lineDiscountAllocations: $discountResult->lineAllocations,
                freeShippingApplied: $discountResult->freeShipping,
            );

            $lockedCheckout->totals_json = $pricingResult->toArray();
            $lockedCheckout->tax_provider_snapshot_json = $this->buildTaxSnapshot($taxResult);
            $lockedCheckout->save();

            $this->syncCheckout($checkout, $lockedCheckout);

            return $pricingResult;
        });

        return $result;
    }

    private function calculateDiscount(Checkout $checkout): DiscountCalculationResult
    {
        $code = is_string($checkout->discount_code) ? trim($checkout->discount_code) : '';

        if ($code === '') {
            return DiscountCalculationResult::none();
        }

        $discount = $this->discountService->validate($code, $checkout->store, $checkout->cart);

        return $this->discountService->calculate($discount, $checkout->cart);
    }

    private function shippingAmount(Checkout $checkout, Cart $cart, DiscountCalculationResult $discountResult): int
    {
        if (! $this->shippingCalculator->cartRequiresShipping($cart)) {
            return 0;
        }

        if ($discountResult->freeShipping) {
            return 0;
        }

        if ($checkout->shipping_method_id === null) {
            return 0;
        }

        $address = $checkout->shipping_address_json;

        if (! is_array($address)) {
            throw InvalidCheckoutStateException::shippingAddressRequired((int) $checkout->id);
        }

        $quote = $this->shippingCalculator->selectActiveRateByZone(
            store: $checkout->store,
            address: $address,
            cart: $cart,
            shippingRateId: (int) $checkout->shipping_method_id,
            checkoutId: (int) $checkout->id,
        );

        return $quote->amount;
    }

    private function taxResult(Checkout $checkout, Cart $cart, int $shippingAmount): TaxCalculationResult
    {
        /** @var TaxSetting|null $taxSetting */
        $taxSetting = TaxSetting::query()->find((int) $checkout->store_id);

        if ($taxSetting === null) {
            return TaxCalculationResult::zero();
        }

        $address = is_array($checkout->shipping_address_json) ? $checkout->shipping_address_json : [];
        $lineAmounts = $cart->lines
            ->sortBy('id')
            ->map(static fn (CartLine $line): int => (int) $line->line_total_amount)
            ->values()
            ->all();

        return $this->taxCalculator->calculateForAmounts(
            lineAmounts: $lineAmounts,
            shippingAmount: $shippingAmount,
            settings: $taxSetting,
            address: $address,
        );
    }

    private function subtotal(Cart $cart): int
    {
        return (int) $cart->lines->sum(static fn (CartLine $line): int => (int) $line->line_subtotal_amount);
    }

    private function recalculateLineSubtotals(Cart $cart): void
    {
        $cart->loadMissing('lines');

        /** @var CartLine $line */
        foreach ($cart->lines as $line) {
            $lineSubtotal = (int) $line->unit_price_amount * (int) $line->quantity;
            $lineDiscount = max(0, min($lineSubtotal, (int) $line->line_discount_amount));
            $lineTotal = $lineSubtotal - $lineDiscount;

            $line->line_subtotal_amount = $lineSubtotal;
            $line->line_discount_amount = $lineDiscount;
            $line->line_total_amount = $lineTotal;
            $line->save();
        }
    }

    /**
     * @return array<string, mixed>
     */
    private function buildTaxSnapshot(TaxCalculationResult $result): array
    {
        return [
            'provider' => 'manual',
            'calculated_at' => now()->toISOString(),
            'rate_basis_points' => $result->rateBasisPoints,
            'lines' => array_map(static fn ($line): array => $line->toArray(), $result->taxLines),
            'tax_total' => $result->totalAmount,
        ];
    }

    private function lockCheckout(Checkout $checkout): Checkout
    {
        /** @var Checkout $locked */
        $locked = Checkout::query()
            ->with(['store', 'cart.lines.variant.product.collections'])
            ->whereKey($checkout->getKey())
            ->lockForUpdate()
            ->firstOrFail();

        return $locked;
    }

    private function syncCheckout(Checkout $target, Checkout $source): void
    {
        $target->status = $source->status;
        $target->payment_method = $source->payment_method;
        $target->email = $source->email;
        $target->shipping_address_json = $source->shipping_address_json;
        $target->billing_address_json = $source->billing_address_json;
        $target->shipping_method_id = $source->shipping_method_id;
        $target->discount_code = $source->discount_code;
        $target->tax_provider_snapshot_json = $source->tax_provider_snapshot_json;
        $target->totals_json = $source->totals_json;
        $target->expires_at = $source->expires_at;
        $target->updated_at = $source->updated_at;
    }
}


**Fixing discount tests with shipping rate**


Input:
*** Begin Patch
*** Update File: /Users/fabianwesner/Herd/shop/tests/Feature/Api/StorefrontCheckoutApiTest.php
@@
 test('applies a valid discount code to checkout', function (): void {
     $hostname = 'checkout-discount-valid.test';
     $store = storefrontCheckoutApiCreateStore($hostname);
     $variant = storefrontCheckoutApiCreateVariant($store, 'discount-valid');
     $cart = storefrontCheckoutApiCreateCart($store, $variant);
+    $shippingRate = storefrontCheckoutApiCreateShippingRate($store);
     storefrontCheckoutApiCreateDiscount($store, 'WELCOME10');
@@
-        'shipping_method_id' => 1,
+        'shipping_method_id' => $shippingRate->id,
*** End Patch


Output: {"output":"Success. Updated the following files:\nM /Users/fabianwesner/Herd/shop/tests/Feature/Api/StorefrontCheckoutApiTest.php\n","metadata":{"exit_code":0,"duration_seconds":0.0}}


**Running full test suite**


The discount test failure was caused by a missing shipping-rate fixture now required by the stricter shared pricing path. I’ve patched the test data and am re-running all gates again.


./vendor/bin/phpstan analyse --configuration=phpstan.neon --memory-limit=1G


Output:
Chunk ID: 428e68
Wall time: 0.4145 seconds
Process exited with code 0
Original token count: 78
Output:

  .......

  ──────────────────────────────────────────────────────────────────── Laravel
    PASS   ........................................................... 7 files


Output:
Chunk ID: 2a1d60
Wall time: 5.1161 seconds
Process exited with code 0
Original token count: 2839
Output:

   INFO  Configuration cache cleared successfully.

  ............................................................................
  ............................................................................
  ............................................................................
  ...............................

  ──────────────────────────────────────────────────────────────────── Laravel
    PASS   ......................................................... 259 files

   PASS  Tests\Unit\ExampleTest
  ✓ that true is true                                                    0.08s

   PASS  Tests\Unit\Services\CartServiceTest
  ✓ creates a cart with store currency and version one                   0.10s
  ✓ adds and merges lines for the same variant                           0.02s
  ✓ increments version on add update and remove mutations                0.01s
  ✓ removes a line when updated quantity is zero                         0.01s
  ✓ rejects adding variants from inactive products                       0.01s
  ✓ rejects add line when inventory is insufficient for deny policy      0.01s

   PASS  Tests\Unit\Services\DiscountServiceTest
  ✓ validates an active discount code case insensitively                 0.02s
  ✓ rejects unknown discount codes                                       0.01s
  ✓ rejects expired discounts                                            0.01s
  ✓ rejects discounts that reached usage limit                           0.01s
  ✓ rejects discounts when minimum purchase is not met                   0.01s
  ✓ calculates percent discount amounts deterministically                0.01s
  ✓ caps fixed discount amounts at subtotal                              0.01s

   PASS  Tests\Unit\Services\HandleGeneratorTest
  ✓ generates a slug from title when no collision exists                 0.01s
  ✓ appends incrementing numeric suffixes on collisions                  0.01s
  ✓ scopes uniqueness checks per store                                   0.01s
  ✓ ignores the current record when exclude id is provided               0.01s
  ✓ normalizes special characters into url safe handles                  0.01s

   PASS  Tests\Unit\Services\InventoryServiceTest
  ✓ checks availability for deny policy using available quantity         0.01s
  ✓ allows availability check for continue policy even when stock is in… 0.01s
  ✓ reserve increments quantity reserved                                 0.01s
  ✓ reserve throws when deny policy does not have enough available inve… 0.01s
  ✓ release decrements reserved quantity                                 0.01s
  ✓ commit decrements on hand and reserved quantities                    0.01s
  ✓ restock increments on hand quantity                                  0.01s

   PASS  Tests\Unit\Services\PricingEngineTest
  ✓ calculates subtotal and total for a checkout without shipping or di… 0.02s
  ✓ caps fixed discount so totals never go negative                      0.01s
  ✓ returns identical outputs for identical inputs                       0.01s

   PASS  Tests\Feature\AdminWeb\AdminWebPagesTest
  ✓ admin login page renders and authenticated admin can login           0.07s
  ✓ authenticated admin can open core admin pages                        0.07s
  ✓ authenticated admin can create update and archive a product via adm… 0.03s
  ✓ product web form validates required fields                           0.02s
  ✓ authenticated admin can create update and delete a collection via a… 0.03s
  ✓ authenticated admin can create update and delete a discount via adm… 0.02s
  ✓ authenticated admin can create update and delete a page via admin w… 0.02s

   PASS  Tests\Feature\Api\AdminApiAuthTest
  ✓ admin me endpoint requires sanctum authentication                    0.01s
  ✓ authenticated admin can access admin me endpoint                     0.01s
  ✓ admin products collections and discounts endpoints require auth      0.02s
  ✓ authenticated admin can access products collections and discounts e… 0.02s

   PASS  Tests\Feature\Api\StorefrontCartApiTest
  ✓ supports the storefront cart flow create add update and remove       0.03s
  ✓ returns 404 for unknown cart ids                                     0.01s
  ✓ returns 409 when cart version does not match current version         0.01s
  ✓ returns 422 when requested quantity exceeds deny policy inventory    0.01s

   PASS  Tests\Feature\Api\StorefrontCatalogApiTest
  ✓ search returns matching active products and logs search query        0.01s
  ✓ search returns empty data for unknown terms                          0.01s
  ✓ analytics ingestion accepts valid event batches and stores events    0.01s
  ✓ analytics ingestion rejects invalid event payloads                   0.01s

   PASS  Tests\Feature\Api\StorefrontCheckoutApiTest
  ✓ supports checkout transition flow from started to completed          0.04s
  ✓ pay endpoint is idempotent for repeated requests on the same checko… 0.05s
  ✓ returns 409 for invalid checkout state transition                    0.01s
  ✓ applies a valid discount code to checkout                            0.02s
  ✓ returns 422 for invalid discount code                                0.02s
  ✓ returns 404 for unknown checkout ids                                 0.01s

   PASS  Tests\Feature\Auth\AdminAuthTest
  ✓ admin protected endpoint requires authentication                     0.01s
  ✓ authenticated admin user can access admin protected endpoint         0.02s
  ✓ rate limits repeated admin login attempts to five per minute         0.01s

   PASS  Tests\Feature\Auth\AuthenticationTest
  ✓ login screen can be rendered                                         0.02s
  ✓ users can authenticate using the login screen                        0.02s
  ✓ users can not authenticate with invalid password                     0.01s
  ✓ users with two factor enabled are redirected to two factor challeng… 0.01s
  ✓ users can logout                                                     0.01s

   PASS  Tests\Feature\Auth\CustomerAuthTest
  ✓ customer auth guard is configured                                    0.01s
  ✓ customer protected endpoint redirects guests to storefront login     0.01s
  ✓ rate limits repeated customer login attempts to five per minute      0.01s

   PASS  Tests\Feature\Auth\EmailVerificationTest
  ✓ email verification screen can be rendered                            0.01s
  ✓ email can be verified                                                0.01s
  ✓ email is not verified with invalid hash                              0.01s
  ✓ already verified user visiting verification link is redirected with… 0.01s

   PASS  Tests\Feature\Auth\PasswordConfirmationTest
  ✓ confirm password screen can be rendered                              0.01s

   PASS  Tests\Feature\Auth\PasswordResetTest
  ✓ reset password link screen can be rendered                           0.01s
  ✓ reset password link can be requested                                 0.22s
  ✓ reset password screen can be rendered                                0.22s
  ✓ password can be reset with valid token                               0.23s

   PASS  Tests\Feature\Auth\RegistrationTest
  ✓ registration screen can be rendered                                  0.02s
  ✓ new users can register                                               0.01s

   PASS  Tests\Feature\Auth\TwoFactorChallengeTest
  ✓ two factor challenge redirects to login when not authenticated       0.01s
  ✓ two factor challenge can be rendered                                 0.01s

   PASS  Tests\Feature\DashboardTest
  ✓ guests are redirected to the login page                              0.01s
  ✓ authenticated users can visit the dashboard                          0.03s

   PASS  Tests\Feature\ExampleTest
  ✓ it returns a successful response                                     0.01s

   PASS  Tests\Feature\Settings\PasswordUpdateTest
  ✓ password can be updated                                              0.07s
  ✓ correct password must be provided to update password                 0.05s

   PASS  Tests\Feature\Settings\ProfileUpdateTest
  ✓ profile page is displayed                                            0.04s
  ✓ profile information can be updated                                   0.04s
  ✓ email verification status is unchanged when email address is unchan… 0.04s
  ✓ user can delete their account                                        0.02s
  ✓ correct password must be provided to delete account                  0.03s

   PASS  Tests\Feature\Settings\TwoFactorAuthenticationTest
  ✓ two factor settings page can be rendered                             0.03s
  ✓ two factor settings page requires password confirmation when enable… 0.01s
  ✓ two factor settings page returns forbidden response when two factor… 0.01s
  ✓ two factor authentication disabled when confirmation abandoned betw… 0.02s

   PASS  Tests\Feature\Storefront\StorefrontWebPagesTest
  ✓ storefront core pages render with tenant host                        0.04s
  ✓ customer can register and access account pages                       0.03s
  ✓ customer login and logout flow works                                 0.02s
  ✓ product add to cart form creates a guest cart line                   0.02s
  ✓ product add to cart form returns validation errors for unknown vari… 0.02s
  ✓ cart line quantity update and remove forms mutate lines              0.02s
  ✓ cart line remove form shows errors for unknown lines                 0.02s
  ✓ cart can start checkout from cart page                               0.02s
  ✓ cart checkout start fails for empty carts                            0.02s
  ✓ checkout step forms can set address shipping payment discount and c… 0.05s
  ✓ checkout forms return errors for invalid discount and invalid payme… 0.02s
  ✓ customer can create update and delete addresses from account         0.02s
  ✓ address form validates required fields                               0.02s

   PASS  Tests\Feature\Tenancy\StoreIsolationTest
  ✓ scopes product-like queries to the current store                     0.01s
  ✓ scopes order-like queries to the current store                       0.01s
  ✓ automatically sets store_id on model creation                        0.01s
  ✓ prevents accessing another store records via direct id               0.01s
  ✓ allows cross-store access when store scope is removed                0.01s

   PASS  Tests\Feature\Tenancy\TenantResolutionTest
  ✓ returns 404 for unknown hostname                                     0.02s
  ✓ returns 503 for suspended store on storefront requests               0.01s

  Tests:    112 passed (549 assertions)
  Duration: 2.93s


Output:
Chunk ID: 3e012c
Wall time: 0.6984 seconds
Process exited with code 0
Original token count: 73
Output:
  0/42 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░]   0% 42/42 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 [OK] No errors


Output:
Chunk ID: fc971c
Wall time: 0.3942 seconds
Process exited with code 0
Original token count: 124
Output:
   0/175 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░]   0%
 175/175 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 -------------------- -----
  Report
 -------------------- -----
  Violations           0
  Skipped violations   0
  Uncovered            849
  Allowed              777
  Warnings             0
  Errors               0
 -------------------- -----


**Restarting review cycle**


Output: {"status":{"completed":"Findings (ordered by severity):\n\n1. **High – Security / data integrity:** The API discount endpoint no longer delegates to `DiscountService::validate`, it resolves a discount with `findDiscountByCode` (only checking `active` + dates) and writes the code & totals directly. `DiscountService::validate` is where minimum purchase, product/collection restrictions, usage limits, and expiration logic live; skipping it means discount codes that should be blocked (no eligible lines, usage_limit reached, min purchase not met, etc.) will still be accepted and persisted, so any pricing/inventory invariants enforced there can be bypassed entirely. Because the API endpoint is now open to clients on the storefront front door, this is a live data-integrity/abuse vector that needs to be fixed before shipping. You need to reuse the shared service (or mirror every validation rule there) before merging.  \n2. **Medium – Architecture / layering & data integrity:** The API `CheckoutController` now contains almost every business rule that `CheckoutService` already owns (shipping selection, payment selection, completion, totals, inventory, order creation), and when the controller can’t resolve the service it silently runs a hand-rolled “fallback” that simply writes the checkout/order fields and recalculates totals. That fallback never calls `CheckoutService::selectPaymentMethod`, so it does not reserve inventory, re-run the pricing engine, or enforce the same state guards that the service provides. As a result, even a transient failure in `resolveService` (or the service throwing for a single checkout) leaves the system in a different state, violates the layering captured in `deptrac` (Presentation now mutates Domain/Infrastructure directly), and reintroduces overselling / inconsistent orders. Keep the controller thin and let `CheckoutService` drive these transitions; if you must add a fallback it must perform the same checks/reservations.  \n3. **Low – Static analysis (phpstan):** `phpstan.neon` only analyses `app/Auth`, `app/Enums`, `app/Http/Middleware`, and `app/Support`, so none of the new API controller logic (or any storefront controller logic) is covered by the max-level PHPStan baseline that the rest of the app enjoys. That means any newly added assumptions (types, `enum` usage, property defs) in this large controller can regress without being caught. Extend the `paths` section (e.g., include `app/Http/Controllers`, especially the `Api` namespace) and run PHPStan against the new endpoints before shipping.  \n4. **Low – Tests:** The new `tests/Feature/Api/StorefrontCheckoutApiTest` covers the idempotent `pay` flow, which is great, but because the controller contains a fallback branch that fires whenever `CheckoutService` is unavailable, that branch still has no automated coverage. There are no tests that simulate the service throwing or being absent, so the duplicated logic in the fallback (which skips inventory reservation/discount validation) could silently break in the future. Adding a test that forces the fallback to run would keep that code under observation.\n\nCritical issues remain: yes (discount validation bypass is a live data-integrity risk).\n\nTests were not run (review-only pass).\n\nNext steps:\n1. Have the API controller delegate fully to `CheckoutService`/`DiscountService` (or ensure the fallback mirrors all their guards) so the business rules stay centralized and layered correctly.\n2. Expand `phpstan.neon` to include the API controller paths and add a regression test that exercises the controller fallback branch to guard against future drift."}}


**Starting fresh review**


Fresh independent review pass #5 after discount-service enforcement and test fixture update. Ignore prior context and review strictly for architecture/layering, security/data integrity, static analysis implications, and test coverage. Return findings ordered by severity and explicitly state whether any critical issues remain.


Output: {"status":{"019c5bc3-1283-7311-94f4-16df54aa74d3":{"completed":"Findings (ordered by severity):\n\n1. **Severity: Critical – Discount usage limits never enforceable.**  \n   The code path that finalizes a checkout/order (both the API controller `app/Http/Controllers/Api/Storefront/CheckoutController.php:470‑555` and the storefront web controller `app/Http/Controllers/Storefront/CheckoutController.php:361‑449`) creates the order without touching `discounts.usage_count`. A repo-wide search shows no write/update on that column, so `usage_count` stays at 0 forever. The spec explicitly says “When an order is successfully created with a discount code, increment `discounts.usage_count` by 1” (`specs/05-BUSINESS-LOGIC.md:720‑724`), so any discount with a `usage_limit` can currently be reused indefinitely. This is both a data-integrity and security issue because usage limits are silently bypassed.  \n   **Fix:** Increment the `usage_count` as part of the checkout/order completion transaction (ideally inside the shared `CheckoutService` or a dedicated discount usage tracker) and persist the increment before creating the order. Add a regression test that completes a checkout with a limited discount and asserts both the order succeeds and `usage_count` increases by one, then another attempt fails with the expected `usage_limit_reached` error.\n\n2. **Severity: High – Order lines never record discount allocations.**  \n   Both controllers create `order_line` records with `'discount_allocations_json' => []` and never populate it with the actual `{discount_id, amount}` payload required by the spec (`specs/05-BUSINESS-LOGIC.md:548‑556`). Because the controllers are reimplementing the checkout completion logic instead of delegating to a shared service, the pricing/discount data computed by `PricingEngine` is not streamed into the saved order lines. The result is a loss of traceability for which discount IDs were applied to which lines, making audits and downstream analytics impossible.  \n   **Fix:** When persisting each order line, build `discount_allocations_json` from the cart line’s `line_discount_amounts`/`line_discount_allocations` and the active discount’s ID so the JSON array is populated, and ensure both API and storefront checkout flows use the same helper (the shared `CheckoutService` should own this mapping). This also reduces duplicated logic and keeps layering aligned.\n\n3. **Severity: Medium – Critical behavior lacks automated coverage.**  \n   The existing checkout tests (`tests/Feature/Api/StorefrontCheckoutApiTest.php`, `tests/Unit/Services/DiscountServiceTest.php`, etc.) focus on success/validation of codes but never assert that `discounts.usage_count` increments or that `order_lines.discount_allocations_json` contains the expected metadata after checkout completion. Because both behaviors live in controller/order persistence code rather than the service layer, they are effectively untested.  \n   **Fix:** Add dedicated tests that complete a checkout with a discount and then assert (a) the discount record’s `usage_count` increased and (b) the created order lines’ `discount_allocations_json` entries reference the discount ID and amount. Preferably exercise both API and storefront flows to catch regressions in either controller copy.\n\nCritical issues remain: **Yes** — until the checkout/order finalization logic increments `discounts.usage_count`, usage limits are not enforced and remain bypassable.\n\nNext steps:\n1. Move the checkout completion/order creation logic into or behind the shared `CheckoutService` (or another reusable helper) so both API and storefront paths reuse the same discount persistence rules.\n2. Implement the `usage_count` increment and populate `order_lines.discount_allocations_json` as part of that shared flow.\n3. Extend the checkout test suites to assert those two behaviors so regressions are caught automatically."}},"timed_out":false}


**Implementing discount usage increment and allocations**


Another independent critical review surfaced missing discount usage accounting on order completion. I’m fixing this now by atomically incrementing `discounts.usage_count` and persisting per-line discount allocations during checkout completion (API + storefront), then adding regression tests.


Input:
*** Begin Patch
*** Update File: /Users/fabianwesner/Herd/shop/app/Http/Controllers/Storefront/CheckoutController.php
@@
             $pricingResult = $this->checkoutService->computeTotals($checkoutRecord);
             $totals = $this->pricingTotals($pricingResult);
             $isBankTransfer = $paymentMethod === PaymentMethod::BankTransfer->value;
+            $appliedDiscount = $this->lockDiscountByCode(
+                storeId: (int) $checkoutRecord->store_id,
+                code: $checkoutRecord->discount_code,
+            );

             $order = Order::query()->create([
                 'store_id' => (int) $checkoutRecord->store_id,
                 'customer_id' => $checkoutRecord->customer_id,
                 'checkout_id' => (int) $checkoutRecord->id,
@@
                 $order->lines()->create([
                     'product_id' => $product?->id,
                     'variant_id' => $variant?->id,
                     'title_snapshot' => (string) ($product?->title ?? 'Product'),
                     'sku_snapshot' => $variant?->sku,
                     'quantity' => (int) $line->quantity,
                     'unit_price_amount' => (int) $line->unit_price_amount,
                     'total_amount' => (int) $line->line_total_amount,
                     'tax_lines_json' => [],
-                    'discount_allocations_json' => [],
+                    'discount_allocations_json' => $this->discountAllocationsForLine($appliedDiscount, $line),
                 ]);
             }
+
+            if ($appliedDiscount instanceof Discount) {
+                $appliedDiscount->usage_count = (int) $appliedDiscount->usage_count + 1;
+                $appliedDiscount->save();
+            }
@@
         return [
             'created_at' => $createdAt,
             'token' => $hashedToken,
         ];
     }
+
+    private function lockDiscountByCode(int $storeId, ?string $code): ?Discount
+    {
+        if (! is_string($code) || trim($code) === '') {
+            return null;
+        }
+
+        /** @var Discount|null $discount */
+        $discount = Discount::query()
+            ->where('store_id', $storeId)
+            ->whereRaw('lower(code) = ?', [Str::lower(trim($code))])
+            ->lockForUpdate()
+            ->first();
+
+        return $discount;
+    }
+
+    /**
+     * @return array<int, array{discount_id: int, code: string, amount: int}>
+     */
+    private function discountAllocationsForLine(?Discount $discount, CartLine $line): array
+    {
+        if (! $discount instanceof Discount) {
+            return [];
+        }
+
+        $amount = (int) $line->line_discount_amount;
+
+        if ($amount <= 0) {
+            return [];
+        }
+
+        return [[
+            'discount_id' => (int) $discount->id,
+            'code' => (string) ($discount->code ?? ''),
+            'amount' => $amount,
+        ]];
+    }
*** End Patch


Output:
apply_patch verification failed: Failed to find expected lines in /Users/fabianwesner/Herd/shop/app/Http/Controllers/Storefront/CheckoutController.php:
        return [
            'created_at' => $createdAt,
            'token' => $hashedToken,
        ];
    }


**Refining patch target in checkout controller**


sed -n '340,520p' app/Http/Controllers/Storefront/CheckoutController.php && sed -n '520,760p' app/Http/Controllers/Storefront/CheckoutController.php


Output:
Chunk ID: 196dc9
Wall time: 0.0507 seconds
Process exited with code 0
Original token count: 3063
Output:
            'totals' => $totals,
            'status' => $status,
            'order' => $order,
        ]);
    }

    private function resolveCheckout(Request $request, int $checkoutId): Checkout
    {
        /** @var Checkout $checkout */
        $checkout = Checkout::query()
            ->where('store_id', $this->currentStoreId($request))
            ->whereKey($checkoutId)
            ->with([
                'cart.lines.variant.product',
                'customer',
            ])
            ->firstOrFail();

        return $checkout;
    }

    private function completeCheckout(Checkout $checkout, string $paymentMethod): void
    {
        DB::transaction(function () use ($checkout, $paymentMethod): void {
            /** @var Checkout $checkoutRecord */
            $checkoutRecord = Checkout::query()
                ->whereKey($checkout->id)
                ->lockForUpdate()
                ->with([
                    'cart.lines.variant.product',
                ])
                ->firstOrFail();

            $status = $this->checkoutStatus($checkoutRecord);

            if ($status === CheckoutStatus::Completed->value) {
                return;
            }

            if ($status !== CheckoutStatus::PaymentSelected->value) {
                throw InvalidCheckoutStateException::invalidTransition($checkoutRecord, [CheckoutStatus::PaymentSelected->value]);
            }

            $cart = $checkoutRecord->cart;

            if (! $cart instanceof Cart) {
                throw new InvalidArgumentException('Cart not found for checkout.');
            }

            $pricingResult = $this->checkoutService->computeTotals($checkoutRecord);
            $totals = $this->pricingTotals($pricingResult);
            $isBankTransfer = $paymentMethod === PaymentMethod::BankTransfer->value;

            $order = Order::query()->create([
                'store_id' => (int) $checkoutRecord->store_id,
                'customer_id' => $checkoutRecord->customer_id,
                'checkout_id' => (int) $checkoutRecord->id,
                'order_number' => $this->nextOrderNumber((int) $checkoutRecord->store_id),
                'payment_method' => $paymentMethod,
                'status' => $isBankTransfer ? 'pending' : 'paid',
                'financial_status' => $isBankTransfer ? 'pending' : 'paid',
                'fulfillment_status' => 'unfulfilled',
                'currency' => (string) $totals['currency'],
                'subtotal_amount' => (int) $totals['subtotal'],
                'discount_amount' => (int) $totals['discount'],
                'shipping_amount' => (int) $totals['shipping'],
                'tax_amount' => (int) $totals['tax'],
                'total_amount' => (int) $totals['total'],
                'email' => $checkoutRecord->email,
                'billing_address_json' => $checkoutRecord->billing_address_json,
                'shipping_address_json' => $checkoutRecord->shipping_address_json,
                'placed_at' => now(),
            ]);

            /** @var CartLine $line */
            foreach ($cart->lines as $line) {
                $variant = $line->variant;
                $product = $variant?->product;

                $order->lines()->create([
                    'product_id' => $product?->id,
                    'variant_id' => $variant?->id,
                    'title_snapshot' => (string) ($product?->title ?? 'Product'),
                    'sku_snapshot' => $variant?->sku,
                    'quantity' => (int) $line->quantity,
                    'unit_price_amount' => (int) $line->unit_price_amount,
                    'total_amount' => (int) $line->line_total_amount,
                    'tax_lines_json' => [],
                    'discount_allocations_json' => [],
                ]);
            }

            $order->payments()->create([
                'provider' => 'mock',
                'method' => $paymentMethod,
                'provider_payment_id' => 'mock_'.Str::lower(Str::random(16)),
                'status' => $isBankTransfer ? 'pending' : 'captured',
                'amount' => (int) $order->total_amount,
                'currency' => (string) $order->currency,
                'raw_json_encrypted' => null,
                'created_at' => now(),
            ]);

            $cart->status = CartStatus::Converted;
            $cart->save();

            $checkoutRecord->status = CheckoutStatus::Completed;
            $checkoutRecord->payment_method = $paymentMethod;
            $checkoutRecord->totals_json = $totals;
            $checkoutRecord->save();
        });
    }

    /**
     * @param  array<string, list<string>|string>  $errors
     */
    private function redirectToCheckoutWithErrors(int $checkoutId, array $errors, bool $withInput = false): RedirectResponse
    {
        $redirect = redirect()->route('storefront.checkout.show', ['checkoutId' => $checkoutId])
            ->withErrors($errors);

        if ($withInput) {
            $redirect->withInput();
        }

        return $redirect;
    }

    /**
     * @return array<string, string>
     */
    private function checkoutStateErrors(InvalidCheckoutStateException $exception): array
    {
        return match ($exception->reasonCode) {
            'invalid_shipping_method' => ['shipping_method_id' => 'The selected shipping method is invalid.'],
            'shipping_address_required', 'missing_address_field', 'unserviceable_address' => ['shipping_address' => $exception->getMessage()],
            'invalid_payment_method' => ['payment_method' => $exception->getMessage()],
            default => ['checkout' => $exception->getMessage()],
        };
    }

    /**
     * @return array<int, array{id: int, name: string, type: string, amount: int, currency: string}>
     */
    private function availableShippingMethods(Checkout $checkout): array
    {
        try {
            return $this->checkoutService->availableShippingMethods($checkout)
                ->map(function (ShippingRateQuote $quote) use ($checkout): array {
                    return [
                        'id' => $quote->rateId,
                        'name' => $quote->name,
                        'type' => $quote->type->value,
                        'amount' => $quote->amount,
                        'currency' => (string) ($checkout->cart?->currency ?? 'USD'),
                    ];
                })
                ->values()
                ->all();
        } catch (Throwable) {
            return [];
        }
    }

    private function currentDiscount(Checkout $checkout): ?Discount
    {
        if (! is_string($checkout->discount_code) || trim($checkout->discount_code) === '') {
            return null;
        }

        /** @var Discount|null $discount */
        $discount = Discount::query()
            ->where('store_id', (int) $checkout->store_id)
            ->whereRaw('lower(code) = ?', [Str::lower(trim($checkout->discount_code))])
            ->where('status', 'active')
            ->where('starts_at', '<=', now())
            ->where(function ($query): void {
                $query->whereNull('ends_at')
                    ->orWhere('ends_at', '>=', now());
            })
            ->first();
            ->first();

        return $discount;
    }

    private function cartRequiresShipping(Checkout $checkout): bool
    {
        $cart = $checkout->cart;

        if (! $cart instanceof Cart) {
            return false;
        }

        return $cart->lines->contains(static function (CartLine $line): bool {
            return (bool) ($line->variant?->requires_shipping ?? false);
        });
    }

    private function isExpiredCheckout(Checkout $checkout): bool
    {
        $status = $this->checkoutStatus($checkout);

        if ($status === CheckoutStatus::Completed->value) {
            return false;
        }

        $expired = $status === CheckoutStatus::Expired->value
            || ($checkout->expires_at !== null && $checkout->expires_at->isPast());

        if ($expired && $status !== CheckoutStatus::Expired->value) {
            $checkout->status = CheckoutStatus::Expired;
            $checkout->save();
        }

        return $expired;
    }

    /**
     * @param  array<string, mixed>  $totals
     * @return array{subtotal_amount: int, discount_amount: int, shipping_amount: int, tax_amount: int, total_amount: int, currency: string}
     */
    private function totalsMap(array $totals): array
    {
        $currency = $totals['currency'] ?? 'USD';

        return [
            'subtotal_amount' => (int) ($totals['subtotal_amount'] ?? $totals['subtotal'] ?? 0),
            'discount_amount' => (int) ($totals['discount_amount'] ?? $totals['discount'] ?? 0),
            'shipping_amount' => (int) ($totals['shipping_amount'] ?? $totals['shipping'] ?? 0),
            'tax_amount' => (int) ($totals['tax_amount'] ?? $totals['tax'] ?? 0),
            'total_amount' => (int) ($totals['total_amount'] ?? $totals['total'] ?? 0),
            'currency' => is_string($currency) && $currency !== '' ? $currency : 'USD',
        ];
    }

    /**
     * @return array{subtotal_amount: int, discount_amount: int, shipping_amount: int, tax_amount: int, total_amount: int, currency: string}
     */
    private function normalizeTotals(Checkout $checkout): array
    {
        $totals = is_array($checkout->totals_json) ? $checkout->totals_json : [];

        if (! isset($totals['currency'])) {
            $totals['currency'] = $checkout->cart?->currency ?? 'USD';
        }

        return $this->totalsMap($totals);
    }

    /**
     * @return array{subtotal: int, discount: int, shipping: int, tax: int, total: int, currency: string}
     */
    private function pricingTotals(PricingResult $result): array
    {
        $payload = $result->toArray();

        return [
            'subtotal' => (int) ($payload['subtotal'] ?? 0),
            'discount' => (int) ($payload['discount'] ?? 0),
            'shipping' => (int) ($payload['shipping'] ?? 0),
            'tax' => (int) ($payload['tax'] ?? 0),
            'total' => (int) ($payload['total'] ?? 0),
            'currency' => (string) ($payload['currency'] ?? 'USD'),
        ];
    }

    private function checkoutStatus(Checkout $checkout): string
    {
        $status = $checkout->status;

        if ($status instanceof CheckoutStatus) {
            return $status->value;
        }

        return (string) $status;
    }

    private function enumValue(mixed $value): ?string
    {
        if ($value instanceof PaymentMethod) {
            return $value->value;
        }

        if (! is_string($value)) {
            return null;
        }

        return $value;
    }

    private function findOrderForCheckout(Checkout $checkout): ?Order
    {
        $order = Order::query()
            ->where('store_id', (int) $checkout->store_id)
            ->where('checkout_id', (int) $checkout->id)
            ->orderByDesc('placed_at')
            ->orderByDesc('id')
            ->first();

        if ($order instanceof Order) {
            return $order;
        }

        $totals = $this->normalizeTotals($checkout);
        $orderQuery = Order::query()
            ->where('store_id', (int) $checkout->store_id)
            ->where('total_amount', (int) $totals['total_amount'])
            ->whereNull('checkout_id');

        if (is_numeric($checkout->customer_id)) {
            $orderQuery->where('customer_id', (int) $checkout->customer_id);
        } elseif (is_string($checkout->email) && $checkout->email !== '') {
            $orderQuery->where('email', $checkout->email);
        }

        /** @var Order|null $order */
        $order = $orderQuery
            ->orderByDesc('placed_at')
            ->orderByDesc('id')
            ->first();

        return $order;
    }

    private function nextOrderNumber(int $storeId): string
    {
        $max = (int) Order::query()
            ->where('store_id', $storeId)
            ->selectRaw("MAX(CAST(CASE WHEN order_number LIKE '#%' THEN SUBSTR(order_number, 2) ELSE order_number END AS INTEGER)) AS max_order")
            ->value('max_order');

        $next = $max > 0 ? $max + 1 : 1001;

        return '#'.$next;
    }
}


<permissions instructions>
Filesystem sandboxing defines which files can be read or written. `sandbox_mode` is `danger-full-access`: No filesystem sandboxing - all commands are permitted. Network access is enabled.
Approval policy is currently never. Do not provide the `sandbox_permissions` for any reason, commands will be rejected.
</permissions instructions>

<collaboration_mode># Collaboration Mode: Default

You are now in Default mode. Any previous instructions for other modes (e.g. Plan mode) are no longer active.

Your active mode changes only when new developer instructions with a different `<collaboration_mode>...</collaboration_mode>` change it; user requests or tool descriptions do not change mode by themselves. Known mode names are Default and Plan.

## request_user_input availability

The `request_user_input` tool is unavailable in Default mode. If you call it while in Default mode, it will return an error.

If a decision is necessary and cannot be discovered from local context, ask the user directly. However, in Default mode you should strongly prefer executing the user's request rather than stopping to ask questions.
</collaboration_mode>

# AGENTS.md instructions for /Users/fabianwesner/Herd/shop

<INSTRUCTIONS>
# Shop

Self-contained e-commerce platform with multi-tenant support, product catalog, cart, checkout, payments (mock PSP), order management, customer accounts, and an admin panel.

## Tech Stack

- PHP 8.4 / Laravel 12
- Livewire v4 / Flux UI Free v2
- Tailwind CSS v4
- SQLite
- Pest v4

## Specs

The complete specification is in `specs/`. Start with `specs/09-IMPLEMENTATION-ROADMAP.md` for the build order, then reference the other files as needed:

- `specs/01-DATABASE-SCHEMA.md` - Database schema
- `specs/02-API-ROUTES.md` - Routes and API endpoints
- `specs/03-ADMIN-UI.md` - Admin panel
- `specs/04-STOREFRONT-UI.md` - Storefront
- `specs/05-BUSINESS-LOGIC.md` - Business logic
- `specs/06-AUTH-AND-SECURITY.md` - Auth and security
- `specs/07-SEEDERS-AND-TEST-DATA.md` - Seeders and test data
- `specs/08-PLAYWRIGHT-E2E-PLAN.md` - E2E browser tests
- `specs/09-IMPLEMENTATION-ROADMAP.md` - Implementation roadmap

## Skills
A skill is a set of local instructions to follow that is stored in a `SKILL.md` file. Below is the list of skills that can be used. Each entry includes a name, description, and file path so you can open the source for full instructions when using a specific skill.
### Available skills
- skill-creator: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations. (file: /Users/fabianwesner/.codex/skills/.system/skill-creator/SKILL.md)
- skill-installer: Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos). (file: /Users/fabianwesner/.codex/skills/.system/skill-installer/SKILL.md)
### How to use skills
- Discovery: The list above is the skills available in this session (name + description + file path). Skill bodies live on disk at the listed paths.
- Trigger rules: If the user names a skill (with `$SkillName` or plain text) OR the task clearly matches a skill's description shown above, you must use that skill for that turn. Multiple mentions mean use them all. Do not carry skills across turns unless re-mentioned.
- Missing/blocked: If a named skill isn't in the list or the path can't be read, say so briefly and continue with the best fallback.
- How to use a skill (progressive disclosure):
  1) After deciding to use a skill, open its `SKILL.md`. Read only enough to follow the workflow.
  2) When `SKILL.md` references relative paths (e.g., `scripts/foo.py`), resolve them relative to the skill directory listed above first, and only consider other paths if needed.
  3) If `SKILL.md` points to extra folders such as `references/`, load only the specific files needed for the request; don't bulk-load everything.
  4) If `scripts/` exist, prefer running or patching them instead of retyping large code blocks.
  5) If `assets/` or templates exist, reuse them instead of recreating from scratch.
- Coordination and sequencing:
  - If multiple skills apply, choose the minimal set that covers the request and state the order you'll use them.
  - Announce which skill(s) you're using and why (one short line). If you skip an obvious skill, say why.
- Context hygiene:
  - Keep context small: summarize long sections instead of pasting them; only load extra files when needed.
  - Avoid deep reference-chasing: prefer opening only files directly linked from `SKILL.md` unless you're blocked.
  - When variants exist (frameworks, providers, domains), pick only the relevant reference file(s) and note that choice.
- Safety and fallback: If a skill can't be applied cleanly (missing files, unclear instructions), state the issue, pick the next-best approach, and continue.
</INSTRUCTIONS>

<environment_context>
  <cwd>/Users/fabianwesner/Herd/shop</cwd>
  <shell>zsh</shell>
</environment_context>

Your mission is to implement an entire shop system based on the specifications im specs/*.
Distribute work to sub-agents. Keep the context of the main agent clean.
You must do in one go without stopping.
You must use team mode!
You must test everything via Pest (unit, and functional tests).
You must also additional simulate user behaviour using the Playwright MPC and confirm that all acceptance criterias are met.
If you find bugs, you must fix them.
The result is a perfect shop system. All requirements are perfectly implemented. All acceptance criterias are met, tested and confirmed by you.

Continuously keep track of the progress in specs/progress.md
Commit your progress after every relevant iteration with a meaningful message.

When implementation is fully done, then make a full review meeting with Playwright in Chrome and showcase all features (customer- and admin-side) to me. In case bugs appear, you must fix them all and restart the review meeting. Shop is running at http://shop.test/.

Don't re-use any existing implementation in another branch. Build it from scratch.

You are writing production PHP (Laravel) code.

STRICT CONSTRAINTS:

1. PHPStan Compliance
- Must pass PHPStan at max level.
- No mixed.
- Explicit return types everywhere.
- Fully typed properties.
- No dynamic properties.
- No suppressed errors.
- No relying on docblocks to hide real type problems.

2. Deptrac Compliance
- Respect architectural layers.
- No cross-layer violations.
- No circular dependencies.
- If a dependency is required, introduce an interface in the correct layer.
- Do not modify architecture unless explicitly instructed.

3. Pest Testing (Mandatory)
- Every feature must include automated tests.
- Include both unit and integration tests when appropriate.
- Cover success path and failure paths.
- Cover edge cases.
- Tests must be deterministic.
- Tests must validate behavior, not implementation details.

4. QA Self-Verification (Mandatory)
   Before finalizing:
- List each acceptance criterion.
- Explicitly confirm how it is implemented.
- Explicitly confirm which test covers it.
- Validate edge cases.
- Validate negative paths.
- Ensure no undefined behavior exists.

5. Fresh Agent Review (Mandatory)

After implementation:

Step 1: A NEW agent instance must review the code.
The reviewer must:
- Ignore prior reasoning.
- Re-evaluate architecture.
- Re-evaluate PHPStan compliance.
- Re-evaluate Deptrac boundaries.
- Re-evaluate test coverage.
- Act as a strict senior reviewer.

Step 2: The reviewer must:
- Identify weaknesses.
- Identify overengineering.
- Identify missing edge cases.
- Identify architectural drift.
- Suggest concrete improvements.

Step 3:
If issues are found:
- Fix them.
- Run review again with another fresh agent.
- Repeat until no critical issues remain.

No feature is complete without independent review.


Summary: auto


**Planning initial repo inspection**


I’m resuming from the last checkpoint and will finish the remaining critical review issues first (`usage_count` + `discount_allocations_json`), then run the full quality gates, then do a fresh independent agent review, and finally run the Playwright acceptance walkthrough at `http://shop.test/`. I’ll inspect current file state and apply targeted fixes now.


**Inspecting repo status and controllers**


sed -n '1,260p' app/Http/Controllers/Storefront/CheckoutController.php


sed -n '1,320p' app/Http/Controllers/Api/Storefront/CheckoutController.php


Output:
Chunk ID: 9e0073
Wall time: 0.0515 seconds
Process exited with code 0
Original token count: 102
Output:
## codex-subagents-2
 M app/Http/Controllers/Api/Storefront/CheckoutController.php
 M app/Http/Controllers/Storefront/CheckoutController.php
 M app/Models/Checkout.php
 M app/Models/Order.php
 M tests/Feature/Api/StorefrontCheckoutApiTest.php
 M tests/Feature/Storefront/StorefrontWebPagesTest.php
?? .deptrac.cache
?? database/migrations/2026_02_14_100710_add_checkout_id_to_orders_table.php
?? foo
?? var/


Output:
Chunk ID: 0e6df8
Wall time: 0.0508 seconds
Process exited with code 0
Original token count: 3045
Output:
<?php

declare(strict_types=1);

namespace App\Http\Controllers\Storefront;

use App\Enums\CartStatus;
use App\Enums\CheckoutStatus;
use App\Enums\PaymentMethod;
use App\Exceptions\InvalidCheckoutStateException;
use App\Exceptions\InvalidDiscountException;
use App\Models\Cart;
use App\Models\CartLine;
use App\Models\Checkout;
use App\Models\Discount;
use App\Models\Order;
use App\Services\CheckoutService;
use App\ValueObjects\PricingResult;
use App\ValueObjects\ShippingRateQuote;
use Illuminate\Contracts\View\View;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Str;
use Illuminate\Validation\Rule;
use Illuminate\Validation\ValidationException;
use InvalidArgumentException;
use Throwable;

class CheckoutController extends StorefrontController
{
    public function __construct(
        private readonly CheckoutService $checkoutService,
    ) {}

    public function show(Request $request, int $checkoutId): View
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);
        $this->isExpiredCheckout($checkout);

        $checkout->loadMissing(['cart.lines.variant.product', 'customer']);

        $totals = $this->normalizeTotals($checkout);
        $status = $this->checkoutStatus($checkout);
        $shippingMethods = $this->availableShippingMethods($checkout);
        $discount = $this->currentDiscount($checkout);
        $requiresShipping = $this->cartRequiresShipping($checkout);

        return view('storefront.checkout.show', [
            'checkout' => $checkout,
            'totals' => $totals,
            'status' => $status,
            'shippingMethods' => $shippingMethods,
            'requiresShipping' => $requiresShipping,
            'paymentMethods' => [
                PaymentMethod::CreditCard->value => 'Credit card',
                PaymentMethod::Paypal->value => 'PayPal',
                PaymentMethod::BankTransfer->value => 'Bank transfer',
            ],
            'appliedDiscount' => $discount,
        ]);
    }

    public function updateAddress(Request $request, int $checkoutId): RedirectResponse
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);

        if ($this->isExpiredCheckout($checkout)) {
            return $this->redirectToCheckoutWithErrors($checkoutId, ['checkout' => 'Checkout expired.']);
        }

        try {
            $validated = Validator::make($request->all(), [
                'email' => ['required', 'email', 'max:255'],
                'shipping_address' => ['nullable', 'array'],
                'shipping_address.first_name' => ['required_with:shipping_address', 'string', 'max:255'],
                'shipping_address.last_name' => ['required_with:shipping_address', 'string', 'max:255'],
                'shipping_address.address1' => ['required_with:shipping_address', 'string', 'max:500'],
                'shipping_address.address2' => ['nullable', 'string', 'max:500'],
                'shipping_address.city' => ['required_with:shipping_address', 'string', 'max:255'],
                'shipping_address.province' => ['nullable', 'string', 'max:255'],
                'shipping_address.province_code' => ['nullable', 'string', 'max:10'],
                'shipping_address.country' => ['required_with:shipping_address', 'string', 'max:255'],
                'shipping_address.country_code' => ['required_with:shipping_address', 'string', 'size:2'],
                'shipping_address.postal_code' => ['required_with:shipping_address', 'string', 'max:20'],
                'shipping_address.phone' => ['nullable', 'string', 'max:50'],
                'billing_address' => ['nullable', 'array'],
                'billing_address.first_name' => ['required_with:billing_address', 'string', 'max:255'],
                'billing_address.last_name' => ['required_with:billing_address', 'string', 'max:255'],
                'billing_address.address1' => ['required_with:billing_address', 'string', 'max:500'],
                'billing_address.address2' => ['nullable', 'string', 'max:500'],
                'billing_address.city' => ['required_with:billing_address', 'string', 'max:255'],
                'billing_address.province' => ['nullable', 'string', 'max:255'],
                'billing_address.province_code' => ['nullable', 'string', 'max:10'],
                'billing_address.country' => ['required_with:billing_address', 'string', 'max:255'],
                'billing_address.country_code' => ['required_with:billing_address', 'string', 'size:2'],
                'billing_address.postal_code' => ['required_with:billing_address', 'string', 'max:20'],
                'billing_address.phone' => ['nullable', 'string', 'max:50'],
                'use_shipping_as_billing' => ['nullable', 'boolean'],
            ])->validate();
        } catch (ValidationException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $exception->errors(), withInput: true);
        }

        $shippingAddress = is_array($validated['shipping_address'] ?? null) ? $validated['shipping_address'] : [];
        $useShippingAsBilling = (bool) ($validated['use_shipping_as_billing'] ?? true);
        $billingAddress = $useShippingAsBilling
            ? null
            : (is_array($validated['billing_address'] ?? null) ? $validated['billing_address'] : null);

        try {
            $this->checkoutService->setAddress(
                checkout: $checkout,
                email: (string) $validated['email'],
                shippingAddress: $shippingAddress,
                billingAddress: $billingAddress,
                useShippingAsBilling: $useShippingAsBilling,
            );
        } catch (InvalidCheckoutStateException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $this->checkoutStateErrors($exception), withInput: true);
        } catch (InvalidArgumentException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'email' => $exception->getMessage(),
            ], withInput: true);
        } catch (Throwable) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'checkout' => 'Unable to update the address right now.',
            ], withInput: true);
        }

        return redirect()->route('storefront.checkout.show', ['checkoutId' => $checkoutId])
            ->with('status', 'Address saved.');
    }

    public function selectShippingMethod(Request $request, int $checkoutId): RedirectResponse
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);

        if ($this->isExpiredCheckout($checkout)) {
            return $this->redirectToCheckoutWithErrors($checkoutId, ['checkout' => 'Checkout expired.']);
        }

        try {
            $validated = Validator::make($request->all(), [
                'shipping_method_id' => ['nullable', 'integer', 'min:1'],
            ])->validate();
        } catch (ValidationException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $exception->errors(), withInput: true);
        }

        $shippingMethodId = isset($validated['shipping_method_id']) && is_numeric($validated['shipping_method_id'])
            ? (int) $validated['shipping_method_id']
            : null;

        if ($this->cartRequiresShipping($checkout) && $shippingMethodId === null) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'shipping_method_id' => 'Please select a shipping method.',
            ], withInput: true);
        }

        try {
            $this->checkoutService->setShippingMethod($checkout, $shippingMethodId);
        } catch (InvalidCheckoutStateException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $this->checkoutStateErrors($exception), withInput: true);
        } catch (Throwable) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'checkout' => 'Unable to select a shipping method right now.',
            ], withInput: true);
        }

        return redirect()->route('storefront.checkout.show', ['checkoutId' => $checkoutId])
            ->with('status', 'Shipping method selected.');
    }

    public function selectPaymentMethod(Request $request, int $checkoutId): RedirectResponse
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);

        if ($this->isExpiredCheckout($checkout)) {
            return $this->redirectToCheckoutWithErrors($checkoutId, ['checkout' => 'Checkout expired.']);
        }

        try {
            $validated = Validator::make($request->all(), [
                'payment_method' => ['required', 'string', Rule::in([
                    PaymentMethod::CreditCard->value,
                    PaymentMethod::Paypal->value,
                    PaymentMethod::BankTransfer->value,
                ])],
            ])->validate();
        } catch (ValidationException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $exception->errors(), withInput: true);
        }

        try {
            $this->checkoutService->selectPaymentMethod($checkout, (string) $validated['payment_method']);
        } catch (InvalidCheckoutStateException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $this->checkoutStateErrors($exception), withInput: true);
        } catch (Throwable) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'checkout' => 'Unable to select a payment method right now.',
            ], withInput: true);
        }

        return redirect()->route('storefront.checkout.show', ['checkoutId' => $checkoutId])
            ->with('status', 'Payment method selected.');
    }

    public function applyDiscount(Request $request, int $checkoutId): RedirectResponse
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);

        if ($this->isExpiredCheckout($checkout)) {
            return $this->redirectToCheckoutWithErrors($checkoutId, ['checkout' => 'Checkout expired.']);
        }

        try {
            $validated = Validator::make($request->all(), [
                'code' => ['required', 'string', 'max:50'],
            ])->validate();
        } catch (ValidationException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $exception->errors(), withInput: true);
        }

        try {
            $this->checkoutService->applyDiscount($checkout, (string) $validated['code']);
        } catch (InvalidDiscountException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'code' => $exception->getMessage(),
            ], withInput: true);
        } catch (InvalidCheckoutStateException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $this->checkoutStateErrors($exception), withInput: true);
        } catch (Throwable) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'checkout' => 'Unable to apply discount right now.',
            ], withInput: true);
        }

        return redirect()->route('storefront.checkout.show', ['checkoutId' => $checkoutId])
            ->with('status', 'Discount applied.');
    }

    public function removeDiscount(Request $request, int $checkoutId): RedirectResponse
    {
        $checkout = $this->resolveCheckout($request, $checkoutId);

        if ($this->isExpiredCheckout($checkout)) {
            return $this->redirectToCheckoutWithErrors($checkoutId, ['checkout' => 'Checkout expired.']);
        }

        try {
            $this->checkoutService->removeDiscount($checkout);
        } catch (InvalidCheckoutStateException $exception) {
            return $this->redirectToCheckoutWithErrors($checkoutId, $this->checkoutStateErrors($exception));
        } catch (Throwable) {
            return $this->redirectToCheckoutWithErrors($checkoutId, [
                'checkout' => 'Unable to remove discount right now.',
            ]);
        }


Output:
Chunk ID: 09a6c7
Wall time: 0.0509 seconds
Process exited with code 0
Original token count: 3301
Output:
<?php

namespace App\Http\Controllers\Api\Storefront;

use App\Exceptions\InvalidCheckoutStateException;
use App\Exceptions\InvalidDiscountException;
use App\Http\Controllers\Api\Concerns\ResolvesApiContext;
use App\Http\Controllers\Controller;
use App\Http\Requests\Storefront\Checkouts\ApplyCheckoutDiscountRequest;
use App\Http\Requests\Storefront\Checkouts\PayCheckoutRequest;
use App\Http\Requests\Storefront\Checkouts\SelectCheckoutPaymentMethodRequest;
use App\Http\Requests\Storefront\Checkouts\SelectCheckoutShippingMethodRequest;
use App\Http\Requests\Storefront\Checkouts\StoreCheckoutRequest;
use App\Http\Requests\Storefront\Checkouts\UpdateCheckoutAddressRequest;
use App\Models\Cart;
use App\Models\Checkout;
use App\Models\Discount;
use App\Models\Order;
use App\Models\ShippingRate;
use App\Models\ShippingZone;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

class CheckoutController extends Controller
{
    use ResolvesApiContext;

    public function store(StoreCheckoutRequest $request): JsonResponse
    {
        $store = $this->currentStoreModel($request);
        $validated = $request->validated();

        $cart = $this->findCart((int) $store->id, (int) $validated['cart_id']);

        if (! $cart instanceof Cart) {
            return response()->json([
                'message' => 'Cart not found.',
            ], 404);
        }

        if ($cart->lines->isEmpty()) {
            return response()->json([
                'message' => 'The given data was invalid.',
                'errors' => [
                    'cart_id' => ['Cannot create checkout from an empty cart.'],
                ],
            ], 422);
        }

        $service = $this->resolveService('App\\Services\\CheckoutService');

        if ($service !== null) {
            try {
                if (method_exists($service, 'createFromCart')) {
                    $serviceCheckout = $service->createFromCart($cart, (string) $validated['email']);

                    if ($serviceCheckout instanceof Checkout) {
                        return response()->json($this->checkoutPayload($this->loadCheckout($serviceCheckout)), 201);
                    }
                }

                if (method_exists($service, 'create')) {
                    $serviceCheckout = $service->create($cart, (string) $validated['email']);

                    if ($serviceCheckout instanceof Checkout) {
                        return response()->json($this->checkoutPayload($this->loadCheckout($serviceCheckout)), 201);
                    }
                }
            } catch (\Throwable) {
                // Fall back to direct persistence while service contracts stabilize.
            }
        }

        $checkout = Checkout::query()->create([
            'store_id' => (int) $store->id,
            'cart_id' => (int) $cart->id,
            'customer_id' => $cart->customer_id,
            'status' => 'started',
            'email' => (string) $validated['email'],
            'shipping_address_json' => null,
            'billing_address_json' => null,
            'shipping_method_id' => null,
            'discount_code' => null,
            'tax_provider_snapshot_json' => null,
            'totals_json' => $this->totalsFromCart($cart, 0, 0),
            'expires_at' => now()->addDay(),
        ]);

        return response()->json($this->checkoutPayload($this->loadCheckout($checkout)), 201);
    }

    public function show(Request $request, int $checkout): JsonResponse
    {
        $foundCheckout = $this->findCheckout($this->currentStoreId($request), $checkout);

        if (! $foundCheckout instanceof Checkout) {
            return response()->json([
                'message' => 'Checkout not found.',
            ], 404);
        }

        if ($this->isExpiredCheckout($foundCheckout)) {
            return response()->json([
                'message' => 'Checkout expired.',
                'error_code' => 'checkout_expired',
            ], 422);
        }

        $shippingMethods = $this->availableShippingMethods(
            (int) $foundCheckout->store_id,
            is_array($foundCheckout->shipping_address_json) ? $foundCheckout->shipping_address_json : null,
        );

        return response()->json($this->checkoutPayload($foundCheckout, $shippingMethods, $this->appliedDiscounts($foundCheckout)));
    }

    public function updateAddress(UpdateCheckoutAddressRequest $request, int $checkout): JsonResponse
    {
        $foundCheckout = $this->findCheckout($this->currentStoreId($request), $checkout);

        if (! $foundCheckout instanceof Checkout) {
            return response()->json([
                'message' => 'Checkout not found.',
            ], 404);
        }

        if ($this->isExpiredCheckout($foundCheckout)) {
            return response()->json([
                'message' => 'Checkout expired.',
                'error_code' => 'checkout_expired',
            ], 422);
        }

        $validated = $request->validated();
        $shippingAddress = isset($validated['shipping_address']) && is_array($validated['shipping_address'])
            ? $validated['shipping_address']
            : null;

        $useShippingAsBilling = (bool) ($validated['use_shipping_as_billing'] ?? true);
        $billingAddress = $useShippingAsBilling
            ? $shippingAddress
            : ((isset($validated['billing_address']) && is_array($validated['billing_address'])) ? $validated['billing_address'] : null);

        if ($this->cartRequiresShipping($foundCheckout) && ! is_array($shippingAddress)) {
            return response()->json([
                'message' => 'The given data was invalid.',
                'errors' => [
                    'shipping_address' => ['Shipping address is required.'],
                ],
            ], 422);
        }

        $service = $this->resolveService('App\\Services\\CheckoutService');

        if ($service !== null && method_exists($service, 'setAddress')) {
            try {
                $service->setAddress($foundCheckout, [
                    'shipping_address' => $shippingAddress,
                    'billing_address' => $billingAddress,
                    'use_shipping_as_billing' => $useShippingAsBilling,
                ]);

                $reloaded = $this->loadCheckout($foundCheckout);
                $shippingMethods = $this->availableShippingMethods(
                    (int) $reloaded->store_id,
                    is_array($reloaded->shipping_address_json) ? $reloaded->shipping_address_json : null,
                );

                return response()->json($this->checkoutPayload($reloaded, $shippingMethods, $this->appliedDiscounts($reloaded)));
            } catch (\Throwable) {
                // Fall back to direct implementation below.
            }
        }

        $foundCheckout->shipping_address_json = $shippingAddress;
        $foundCheckout->billing_address_json = $billingAddress;
        $foundCheckout->status = 'addressed';

        $shippingMethods = $this->availableShippingMethods((int) $foundCheckout->store_id, $shippingAddress);

        if ($this->cartRequiresShipping($foundCheckout) && $shippingMethods === []) {
            return response()->json([
                'message' => 'The given data was invalid.',
                'errors' => [
                    'shipping_address' => ['No shipping methods are available for this address.'],
                ],
            ], 422);
        }

        $discount = $this->currentDiscount($foundCheckout);
        $foundCheckout->totals_json = $this->recalculateTotals($foundCheckout, $discount);
        $foundCheckout->save();

        return response()->json($this->checkoutPayload($this->loadCheckout($foundCheckout), $shippingMethods, $this->appliedDiscounts($foundCheckout)));
    }

    public function selectShippingMethod(SelectCheckoutShippingMethodRequest $request, int $checkout): JsonResponse
    {
        $foundCheckout = $this->findCheckout($this->currentStoreId($request), $checkout);

        if (! $foundCheckout instanceof Checkout) {
            return response()->json([
                'message' => 'Checkout not found.',
            ], 404);
        }

        if ($this->isExpiredCheckout($foundCheckout)) {
            return response()->json([
                'message' => 'Checkout expired.',
                'error_code' => 'checkout_expired',
            ], 422);
        }

        $validated = $request->validated();
        $shippingMethodId = (int) $validated['shipping_method_id'];

        $shippingMethods = $this->availableShippingMethods(
            (int) $foundCheckout->store_id,
            is_array($foundCheckout->shipping_address_json) ? $foundCheckout->shipping_address_json : null,
        );

        $selected = collect($shippingMethods)->firstWhere('id', $shippingMethodId);

        if ($this->cartRequiresShipping($foundCheckout) && ! is_array($selected)) {
            return response()->json([
                'message' => 'The given data was invalid.',
                'errors' => [
                    'shipping_method_id' => ['The selected shipping method is invalid.'],
                ],
            ], 422);
        }

        $service = $this->resolveService('App\\Services\\CheckoutService');

        if ($service !== null && method_exists($service, 'setShippingMethod')) {
            try {
                $service->setShippingMethod($foundCheckout, $shippingMethodId);

                $reloaded = $this->loadCheckout($foundCheckout);

                return response()->json($this->checkoutPayload($reloaded, $shippingMethods, $this->appliedDiscounts($reloaded)));
            } catch (\Throwable) {
                // Fall back to direct implementation below.
            }
        }

        $shippingAmount = is_array($selected)
            ? (int) ($selected['price_amount'] ?? 0)
            : 0;

        $foundCheckout->shipping_method_id = $this->cartRequiresShipping($foundCheckout)
            ? $shippingMethodId
            : null;
        $foundCheckout->status = 'shipping_selected';
        $foundCheckout->totals_json = $this->recalculateTotals($foundCheckout, $this->currentDiscount($foundCheckout), $shippingAmount);
        $foundCheckout->save();

        return response()->json($this->checkoutPayload($this->loadCheckout($foundCheckout), $shippingMethods, $this->appliedDiscounts($foundCheckout)));
    }

    public function selectPaymentMethod(SelectCheckoutPaymentMethodRequest $request, int $checkout): JsonResponse
    {
        $foundCheckout = $this->findCheckout($this->currentStoreId($request), $checkout);

        if (! $foundCheckout instanceof Checkout) {
            return response()->json([
                'message' => 'Checkout not found.',
            ], 404);
        }

        if ($this->isExpiredCheckout($foundCheckout)) {
            return response()->json([
                'message' => 'Checkout expired.',
                'error_code' => 'checkout_expired',
            ], 422);
        }

        if (! in_array((string) $this->enumValue($foundCheckout->status), ['addressed', 'shipping_selected', 'payment_selected'], true)) {
            return response()->json([
                'message' => 'Checkout is not ready for payment selection.',
                'error_code' => 'checkout_invalid_state',
            ], 409);
        }

        $validated = $request->validated();
        $paymentMethod = (string) $validated['payment_method'];

        $service = $this->resolveService('App\\Services\\CheckoutService');

        if ($service !== null && method_exists($service, 'selectPaymentMethod')) {
            try {
                $service->selectPaymentMethod($foundCheckout, $paymentMethod);

                $reloaded = $this->loadCheckout($foundCheckout);

                return response()->json($this->checkoutPayload($reloaded, $this->availableShippingMethods((int) $reloaded->store_id, is_array($reloaded->shipping_address_json) ? $reloaded->shipping_address_json : null), $this->appliedDiscounts($reloaded)));
            } catch (\Throwable) {
                // Fall back to direct implementation below.
            }
        }

        $foundCheckout->payment_method = $paymentMethod;
        $foundCheckout->status = 'payment_selected';
        $foundCheckout->totals_json = $this->recalculateTotals($foundCheckout, $this->currentDiscount($foundCheckout));
        $foundCheckout->save();

        return response()->json($this->checkoutPayload($this->loadCheckout($foundCheckout), $this->availableShippingMethods((int) $foundCheckout->store_id, is_array($foundCheckout->shipping_address_json) ? $foundCheckout->shipping_address_json : null), $this->appliedDiscounts($foundCheckout)));
    }

    public function applyDiscount(ApplyCheckoutDiscountRequest $request, int $checkout): JsonResponse
    {
        $foundCheckout = $this->findCheckout($this->currentStoreId($request), $checkout);

        if (! $foundCheckout instanceof Checkout) {
            return response()->json([
                'message' => 'Checkout not found.',
            ], 404);
        }


**Extending file fetch with sed**


sed -n '260,620p' app/Http/Controllers/Storefront/CheckoutController.php


sed -n '320,820p' app/Http/Controllers/Api/Storefront/CheckoutController.php