### Install Dependencies and Run Tests

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Install project dependencies using Composer and run the test suite with Pest. Code style can be fixed using Pint.

```bash
composer install

vendor/bin/pest

vendor/bin/pint
```

--------------------------------

### Install Svea PHP SDK

Source: https://context7.com/nordkit/svea/llms.txt

Install the Svea PHP SDK using Composer. For Laravel applications, publish the configuration file after installation.

```bash
composer require nordkit/svea
```

```bash
php artisan vendor:publish --tag=svea-config
```

--------------------------------

### Namespace Usage Examples

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Demonstrates the standard namespace conventions used throughout the Svea SDK, including core classes, services, contracts, and exceptions.

```php
Svea\SveaClient
Svea\Checkout\CheckoutService
Svea\Admin\AdminService
Svea\Contracts\CheckoutServiceInterface
Svea\Contracts\AdminServiceInterface
Svea\Contracts\SubscriptionServiceInterface
Svea\Webhooks\Webhook
Svea\Exceptions\SveaApiException
Svea\Laravel\SveaServiceProvider
Svea\Laravel\Svea
```

--------------------------------

### Using Svea Facades for API Calls

Source: https://github.com/nordkit/svea/blob/main/README.md

Interact with Svea's Checkout, Admin, and Subscriptions APIs using the provided facades. Example calls demonstrate creating a checkout, managing an order, and listing subscriptions.

```php
use Svea\Laravel\Svea;

Svea::checkout()->create(...);
Svea::admin()->order('12345678')->deliver();
Svea::subscriptions()->list();
```

--------------------------------

### Register and Verify Subscription with Fluent Builder

Source: https://github.com/nordkit/svea/blob/main/README.md

Use the fluent builder to configure and register a subscription, which automatically calls verify() after registration. This method simplifies the subscription setup process.

```php
$subscription = Svea::subscriptions()
    ->on(EventType::CheckoutOrderCreated, EventType::CheckoutOrderDelivered)
    ->notifyAt('https://myapp.com/webhooks/svea')
    ->register(); // registers and verifies
```

--------------------------------

### Instantiate Svea Client

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Two entry points for using the Svea client: a static facade for Laravel with zero configuration, or an explicit instance for framework-agnostic use. The explicit instance allows for multi-merchant setups and testability.

```php
// Laravel — static facade (zero config, reads config/svea.php)
Svea::checkout()->create(...);
```

```php
// Framework-agnostic — explicit instance (portable, testable, multi-merchant)
$svea = new SveaClient([
    'merchant_id'   => 'abc',
    'shared_secret' => 'xyz',
    'environment'   => 'test',
]);
$svea->checkout->create(...);
$svea->admin->order('12345678')->deliver();
```

--------------------------------

### Subscription Management Commands

Source: https://github.com/nordkit/svea/blob/main/README.md

Artisan commands for managing Svea subscriptions, including adding, listing, getting, verifying, updating, and removing subscriptions.

```APIDOC
## Subscription Management Commands

### Add Subscription

```bash
php artisan svea:subscription:add [--no-verify]
```

Adds a new subscription. Use `--no-verify` to skip automatic verification.

### List Subscriptions

```bash
php artisan svea:subscription:list
```

Outputs a table of subscription details including ID, Callback URL, Verified status, and subscribed event types.

### Get Subscription

```bash
php artisan svea:subscription:get {id}
```

Retrieves details for a specific subscription by its ID.

### Verify Subscription

```bash
php artisan svea:subscription:verify {id}
```

Verifies a subscription, required after using `--no-verify` or updating the URL.

### Update Subscription

```bash
php artisan svea:subscription:update {id} [--url=<new_url>] [--events=<event1,event2,...>] [--verify]
```

Updates an existing subscription. Can change the URL, events, or both. Use `--verify` to re-verify after URL change.

### Remove Subscription

```bash
php artisan svea:subscription:remove {id} [--force]
```

Removes a subscription. Use `--force` to skip the confirmation prompt.
```

--------------------------------

### Get Subscription Details

Source: https://github.com/nordkit/svea/blob/main/README.md

Retrieves the details for a specific subscription using its ID.

```bash
php artisan svea:subscription:get {id}
```

--------------------------------

### Svea SDK Entry Points

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Demonstrates the two primary ways to initialize and use the Svea SDK: via a static facade in Laravel or by creating an explicit SveaClient instance for framework-agnostic use.

```APIDOC
## Svea SDK Entry Points

### Laravel Facade

```php
// Laravel — static facade (zero config, reads config/svea.php)
Svea::checkout()->create(...);
```

### Framework-Agnostic Instance

```php
// Framework-agnostic — explicit instance (portable, testable, multi-merchant)
$svea = new SveaClient([
    'merchant_id'   => 'abc',
    'shared_secret' => 'xyz',
    'environment'   => 'test',
]);
$svea->checkout->create(...);
$svea->admin->order('12345678')->deliver();
```

**Note:** The `SveaClient` provides typed service properties like `->checkout`, `->admin`, `->subscriptions`, and `->webhook`, which are lazily resolved on first access.
```

--------------------------------

### Get Order Details

Source: https://github.com/nordkit/svea/blob/main/README.md

Retrieves detailed information about a specific order.

```APIDOC
## Get Order Details

### Description
Retrieves detailed information about a specific order.

### Method
GET

### Endpoint
`/admin/order/{orderId}`

### Parameters
#### Path Parameters
- **orderId** (string) - Required - The ID of the order to retrieve.

### Response
#### Success Response (200 OK)
- **status** (string) - The current status of the order (e.g., 'Open', 'Delivered', 'Cancelled').
- **actions** (array<string>) - A list of available actions for the order (e.g., ['CanDeliverOrder', 'CanCancelOrder']).
- **canDeliver** (bool) - Indicates if the order can be delivered.
- **canCredit** (bool) - Indicates if the order can be credited.
- **canCancel** (bool) - Indicates if the order can be cancelled.
- **deliveries** (object) - An object containing all deliveries associated with the order, keyed by delivery ID.
- **delivery(deliveryId)** (object|null) - Specific delivery details for a given delivery ID.
- **deliveryRowIds(deliveryId)** (array<int>) - Row IDs belonging to a specific delivery.
- **hasAction(actionName)** (bool) - Checks if a specific action is available for the order.
- **hasStatus(statusName)** (bool) - Checks if the order has a specific status.

### Response Example
```json
{
  "status": "Open",
  "actions": ["CanDeliverOrder", "CanCancelOrder"],
  "canDeliver": true,
  "canCredit": false,
  "canCancel": true,
  "deliveries": {
    "456": {
      "deliveryId": 456,
      "rows": [...] 
    }
  }
}
```
```

--------------------------------

### SveaConnector::get

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Sends a GET request to the specified path. The response is wrapped and processed for potential exceptions.

```APIDOC
## GET /path

### Description
Retrieves data from a specific API endpoint using the GET method. This method is used for fetching resources.

### Method
GET

### Endpoint
/{path}

### Parameters
#### Path Parameters
- **path** (string) - Required - The API endpoint path.

### Response
#### Success Response (200)
- Returns the raw JSON array from the API response.

#### Response Example
```json
{
  "example": "response body"
}
```
```

--------------------------------

### Register All Subscription Events

Source: https://github.com/nordkit/svea/blob/main/README.md

Use the `svea:subscription:add` Artisan command to register for all event types using the default callback URL configured in your `.env` file.

```bash
php artisan svea:subscription:add
```

--------------------------------

### Manage Svea Subscriptions

Source: https://github.com/nordkit/svea/blob/main/README.md

Perform get, list, update, and remove operations on subscriptions. Note that URL changes for subscriptions require re-verification.

```php
$subscription = Svea::subscriptions()->get('sub-id');

$subscriptions = Svea::subscriptions()->list(); // array<int, Subscription>

// Update URL or events — URL change requires re-verification
$updated = Svea::subscriptions()->update(
    'sub-id',
    'https://myapp.com/webhooks/svea-new',
    [EventType::CheckoutOrderCreated]
);
Svea::subscriptions()->verify('sub-id'); // required after URL change

Svea::subscriptions()->remove('sub-id');
```

--------------------------------

### Run Pre-release Checks Locally

Source: https://github.com/nordkit/svea/blob/main/RELEASING.md

Execute these commands from the packages/svea/ directory to ensure all tests and static analysis pass before proceeding with the release. All checks must return zero failures or errors.

```bash
# From packages/svea/

vendor/bin/pest --compact                            # 0 failures, 0 errors
vendor/bin/pint --test                               # 0 violations
vendor/bin/phpstan analyse src --memory-limit=512M  # No errors
```

--------------------------------

### Get Svea Checkout Order

Source: https://context7.com/nordkit/svea/llms.txt

Retrieves an existing checkout order by its ID. Handles potential 'Not Found' exceptions if the order does not exist.

```php
use Svea\Checkout\CheckoutOrder;
use Svea\Checkout\OrderRow;
use Svea\Exceptions\SveaNotFoundException;

// Get
try {
    $order = Svea::checkout()->get('12345678');
    $order->id();      // '12345678'
    $order->status();  // 'Created' | 'Cancelled' | 'Final'
    $order->snippet(); // '<div>...</div>'
} catch (SveaNotFoundException $e) {
    // 404 — order not found
}
```

--------------------------------

### Get Checkout Order

Source: https://github.com/nordkit/svea/blob/main/README.md

Retrieves an existing checkout order by its ID. The returned order object provides methods to access its ID, status, and snippet.

```php
$order = Svea::checkout()->get('12345678');

$order->id();      // '12345678'
$order->status();  // 'Created' | 'Cancelled' | 'Final'
$order->snippet(); // '<div>...</div>'
```

--------------------------------

### Initialize SveaConnector

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Instantiates the SveaConnector with configuration, base URL, and an optional Guzzle HandlerStack. Includes a retry middleware based on max_retries configuration.

```php
<?php

declare(strict_types=1);

namespace Svea\Transport;

use GuzzleHttp\Client;
use GuzzleHttp\Exception\ConnectException;
use GuzzleHttp\HandlerStack;
use Svea\Exceptions\SveaAuthenticationException;
use Svea\Exceptions\SveaConnectionException;
use Svea\Exceptions\SveaApiException;
use Svea\Exceptions\SveaNotFoundException;
use Svea\Exceptions\SveaRateLimitException;

final class SveaConnector
{
    private Client $client;

    /** @param array<string, mixed> $config */
    public function __construct(private readonly array $config, string $baseUrl, ?HandlerStack $handlerStack = null)
    {
        $stack = $handlerStack ?? HandlerStack::create();
        $stack->push(RetryMiddleware::make($config['max_retries'] ?? 0));

        $this->client = new Client([
            'base_uri' => rtrim($baseUrl, '/') . '/',
            'timeout'  => $config['timeout'] ?? 10,
            'handler'  => $stack,
        ]);
    }

    /**
     * @param  array<string, mixed>  $data
     * @return array<string, mixed>
     */
    public function post(string $path, array $data = [], ?string $idempotencyKey = null): array
    {
        return $this->send('POST', $path, $data, $idempotencyKey);
    }

    /** @return array<string, mixed> */
    public function get(string $path): array
    {
        return $this->send('GET', $path);
    }

    /**
     * @param  array<string, mixed>  $data
     * @return array<string, mixed>
     */
    private function send(string $method, string $path, array $data = [], ?string $idempotencyKey = null): array
    {
        $body    = $data ? json_encode($data) : '';
        $headers = array_filter([
            'Authorization'   => $this->buildAuthHeader((string) $body),
            'Content-Type'    => 'application/json',
            'Idempotency-Key' => $idempotencyKey,
        ]);

        try {
            $response = $this->client->request($method, $path, [
                'headers' => $headers,
                'body'    => $body,
            ]);
        } catch (ConnectException $e) {
            throw new SveaConnectionException($e->getMessage(), previous: $e);
        }

        $sveaResponse = new SveaResponse($response);
        $this->throwForStatus($sveaResponse);

        return $sveaResponse->json;
    }

    /**
     * Build the Authorization header.
     * Format: SveaCheckoutGateway {merchantId} {base64(sha512(body + sharedSecret))}
     */
    private function buildAuthHeader(string $body): string
    {
        $digest = base64_encode(hash('sha512', $body . $this->config['shared_secret'], binary: true));

        return "SveaCheckoutGateway {$this->config['merchant_id']} {$digest}";
    }

    private function throwForStatus(SveaResponse $response): void
    {
        if ($response->successful()) {
            return;
        }

        throw match (true) {
            $response->statusCode === 401 => new SveaAuthenticationException($response),
            $response->statusCode === 404 => new SveaNotFoundException($response),
            $response->statusCode === 429 => new SveaRateLimitException($response),
            default                       => new SveaApiException($response),
        };
    }
}

```

--------------------------------

### Configure Svea SDK

Source: https://context7.com/nordkit/svea/llms.txt

Configure the Svea SDK by setting merchant credentials, environment, webhook secret, and API base URLs in the configuration file or .env.

```php
return [
    'merchant_id'    => env('SVEA_MERCHANT_ID'),
    'shared_secret'  => env('SVEA_SHARED_SECRET'),
    'environment'    => env('SVEA_ENVIRONMENT', 'test'), // 'test' | 'production'
    'webhook_secret' => env('SVEA_WEBHOOK_SECRET'),
    'subscription_callback_url' => env('SVEA_SUBSCRIPTION_CALLBACK_URL'),
    'max_retries'    => env('SVEA_MAX_RETRIES', 0),
    'timeout'        => env('SVEA_TIMEOUT', 10),
    'base_urls' => [
        'checkout'      => env('SVEA_CHECKOUT_URL'),
        'admin'         => env('SVEA_ADMIN_URL'),
        'subscriptions' => env('SVEA_SUBSCRIPTIONS_URL'),
    ],
];
```

--------------------------------

### Checkout Order Get

Source: https://github.com/nordkit/svea/blob/main/README.md

Retrieves an existing Svea Checkout order by its ID. Returns an order object with methods to access its ID, status, and checkout snippet.

```APIDOC
## Get Checkout Order

### Description

Retrieves an existing Svea Checkout order using its unique ID. The response is an order object that provides access to the order's ID, current status (e.g., 'Created', 'Cancelled', 'Final'), and the checkout snippet if available.

### Method

```php
Svea::checkout()->get(string $id)
```

### Parameters

#### Path Parameters

- **id** (string) - Required - The unique identifier of the order to retrieve.

### Response Example

```php
$order = Svea::checkout()->get('12345678');

$order->id();      // '12345678'
$order->status();  // 'Created' | 'Cancelled' | 'Final'
$order->snippet(); // '<div>...</div>'
```
```

--------------------------------

### Helper for SveaClient in Tests

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Creates a pre-configured SveaClient instance for unit tests, allowing for configuration overrides.

```php
<?php

declare(strict_types=1);

function testClient(array $overrides = []): \Svea\SveaClient
{
    return new \Svea\SveaClient(array_merge([
        'merchant_id'    => 'test-merchant',
        'shared_secret'  => 'test-secret',
        'environment'    => 'test',
        'webhook_secret' => 'webhook-secret',
        'max_retries'    => 0,
        'timeout'        => 5,
    ], $overrides));
}
```

--------------------------------

### Get, Update, Cancel Order

Source: https://context7.com/nordkit/svea/llms.txt

Provides functionality to retrieve an existing checkout order by its ID, update its contents by adding new order rows, or cancel the order entirely.

```APIDOC
## CheckoutService — Get, Update, Cancel

Retrieves an existing checkout order, updates its contents, or cancels it entirely.

### Get Order
```php
use Svea\Checkout\CheckoutOrder;
use Svea\Exceptions\SveaNotFoundException;

try {
    $order = Svea::checkout()->get('12345678');
    $order->id();      // '12345678'
    $order->status();  // 'Created' | 'Cancelled' | 'Final'
    $order->snippet(); // '<div>...</div>'
} catch (SveaNotFoundException $e) {
    // 404 — order not found
}
```

### Update Order
```php
use Svea\Checkout\CheckoutOrder;
use Svea\Checkout\OrderRow;

// Update — same named/fluent API as create(), set only changed fields
$order = Svea::checkout()->update('12345678', function (CheckoutOrder $order) use ($extraItem) {
    $order->addRow(fn (OrderRow $row) => $row
        ->sku($extraItem->sku)
        ->name($extraItem->name)
        ->quantity(100)
        ->unitPrice(5000)
        ->vatPercent(2500));
});
$order->id();     // '12345678'
$order->status(); // 'Created' | 'Cancelled' | 'Final'
```

### Cancel Order
```php
// Cancel — returns void
Svea::checkout()->cancel('12345678');
```
```

--------------------------------

### Standalone SveaClient Initialization

Source: https://github.com/nordkit/svea/blob/main/README.md

Instantiate `SveaClient` directly with an array of configuration options for standalone usage outside of a Laravel framework. This requires providing merchant ID, shared secret, environment, and webhook secret.

```php
use Svea\SveaClient;

$svea = new SveaClient([
    'merchant_id'    => 'abc',
    'shared_secret'  => 'xyz',
    'environment'    => 'test',
    'webhook_secret' => 'whsec_...',
]);

$svea->checkout->create(...);
$svea->admin->order('12345678')->deliver();
```

--------------------------------

### AdminService: Get Order Details

Source: https://context7.com/nordkit/svea/llms.txt

Fetches full order details from the Payment Admin API. Handles potential API exceptions and provides access to order status, actions, and deliveries.

```php
use Svea\Exceptions\SveaNotFoundException;
use Svea\Exceptions\SveaApiException;

try {
    $adminOrder = Svea::admin()->order('12345678')->get();
} catch (SveaNotFoundException $e) {
    // order not found
} catch (SveaApiException $e) {
    echo $e->statusCode;   // e.g. 403
    echo $e->sveaMessage;  // Svea error description
}

$adminOrder->status();             // SveaOrderStatus enum: Open|Delivered|Cancelled|Final
$adminOrder->actions();            // ['CanDeliverOrder', 'CanCancelOrder', ...]
$adminOrder->canDeliver();         // bool
$adminOrder->canCredit();          // bool
$adminOrder->canCancel();          // bool
$adminOrder->deliveries();         // array<int, array<string, mixed>>
$adminOrder->delivery(456);        // array|null — specific delivery by ID
$adminOrder->deliveryRowIds(456);  // int[] — row IDs on delivery 456
$adminOrder->hasAction('CanDeliverOrder'); // bool
$adminOrder->hasStatus('Open');    // bool

// Gate an operation before attempting it
if ($adminOrder->canDeliver()) {
    Svea::admin()->order('12345678')->deliver();
}
```

--------------------------------

### Instantiate SveaClient Standalone

Source: https://context7.com/nordkit/svea/llms.txt

Instantiate SveaClient directly for framework-agnostic usage. Provide configuration options such as merchant ID, shared secret, environment, and webhook secret. The client supports retries on specific HTTP errors and has a configurable timeout.

```php
use Svea\SveaClient;

$svea = new SveaClient([
    'merchant_id'    => 'abc123',
    'shared_secret'  => 'my-shared-secret',
    'environment'    => 'test',          // 'test' | 'production'
    'webhook_secret' => 'whsec_...',
    'max_retries'    => 2,               // retry on 429/500/503 with exponential backoff
    'timeout'        => 15,
]);

// All four surfaces are available:
$svea->checkout()->create(...);
$svea->admin()->order('12345678')->deliver();
$svea->subscriptions()->list();
$svea->webhook()->fromRequest($request);

// Property-style (convenience alias):
$svea->checkout->create(...);
```

--------------------------------

### Get Order Details

Source: https://github.com/nordkit/svea/blob/main/README.md

Retrieve comprehensive details about an order. The response object provides access to the order's status, available actions, delivery information, and allows checking for specific actions or statuses.

```php
$adminOrder = Svea::admin()->order('12345678')->get();
```

```php
$adminOrder->status();             // SveaOrderStatus enum
$adminOrder->actions();            // string[] — e.g. ['CanDeliverOrder', 'CanCancelOrder']
$adminOrder->canDeliver();         // bool
$adminOrder->canCredit();          // bool
$adminOrder->canCancel();          // bool
$adminOrder->deliveries();         // array<int, array<string, mixed>> — all deliveries on the order
$adminOrder->delivery(456);        // array<string, mixed>|null — specific delivery by ID
$adminOrder->deliveryRowIds(456);  // int[] — row IDs belonging to delivery 456 (useful before crediting)
$adminOrder->hasAction('CanDeliverOrder'); // bool — check any action string
$adminOrder->hasStatus('Open');    // bool — check status string directly
```

--------------------------------

### Svea Configuration File (`config/svea.php`)

Source: https://github.com/nordkit/svea/blob/main/README.md

This PHP array defines the Svea configuration, reading values from environment variables. Defaults are provided for environment and retry/timeout settings.

```php
return [
    'merchant_id'    => env('SVEA_MERCHANT_ID'),
    'shared_secret'  => env('SVEA_SHARED_SECRET'),
    'environment'    => env('SVEA_ENVIRONMENT', 'test'), // 'test' | 'production'
    'webhook_secret' => env('SVEA_WEBHOOK_SECRET'),
    'subscription_callback_url' => env('SVEA_SUBSCRIPTION_CALLBACK_URL'),
    'max_retries'    => env('SVEA_MAX_RETRIES', 0),
    'timeout'        => env('SVEA_TIMEOUT', 10),

    // Override base URLs per API surface — useful for pointing at a local mock server.
    // When null the built-in environment defaults are used.
    'base_urls' => [
        'checkout'      => env('SVEA_CHECKOUT_URL'),      // default: https://checkoutapistage.svea.com (test)
        'admin'         => env('SVEA_ADMIN_URL'),         // default: https://paymentadminapistage.svea.com (test)
        'subscriptions' => env('SVEA_SUBSCRIPTIONS_URL'), // default: https://paymentadminapistage.svea.com (test)
    ],
];
```

--------------------------------

### Get Order Details

Source: https://context7.com/nordkit/svea/llms.txt

Fetches full order details from the Payment Admin API, including status, available actions, and all deliveries. This method allows retrieval of comprehensive order information for further processing or display.

```APIDOC
## AdminService — Get Order Details

### Description
Fetches full order details from the Payment Admin API, including status, available actions, and all deliveries.

### Method
GET (implied by SDK usage)

### Endpoint
/api/v1/orders/{orderId}

### Parameters
#### Path Parameters
- **orderId** (string) - Required - The unique identifier of the order.

### Request Example
```php
use Svea\Exceptions\SveaNotFoundException;
use Svea\Exceptions\SveaApiException;

try {
    $adminOrder = Svea::admin()->order('12345678')->get();
} catch (SveaNotFoundException $e) {
    // order not found
} catch (SveaApiException $e) {
    echo $e->statusCode;   // e.g. 403
    echo $e->sveaMessage;  // Svea error description
}
```

### Response
#### Success Response (200)
- **status** (SveaOrderStatus enum) - The current status of the order.
- **actions** (array<string>) - A list of available actions for the order.
- **deliveries** (array<int, array<string, mixed>>) - Details of all deliveries associated with the order.

### Response Example
```php
$adminOrder->status();             // SveaOrderStatus enum: Open|Delivered|Cancelled|Final
$adminOrder->actions();            // ['CanDeliverOrder', 'CanCancelOrder', ...]
$adminOrder->canDeliver();         // bool
$adminOrder->canCredit();          // bool
$adminOrder->canCancel();          // bool
$adminOrder->deliveries();         // array<int, array<string, mixed>>
$adminOrder->delivery(456);        // array|null — specific delivery by ID
$adminOrder->deliveryRowIds(456);  // int[] — row IDs on delivery 456
$adminOrder->hasAction('CanDeliverOrder'); // bool
$adminOrder->hasStatus('Open');    // bool
```
```

--------------------------------

### Create a Checkout Order with Svea PHP SDK

Source: https://github.com/nordkit/svea/blob/main/README.md

Instantiate a CheckoutOrder with necessary details like currency, country code, merchant settings, and cart items. Numeric values for quantity, unit price, and VAT percent follow Svea's minor-unit convention. The returned order object provides its ID, embeddable snippet, and status.

```php
use Svea\Checkout\Cart;
use Svea\Checkout\CheckoutOrder;
use Svea\Checkout\MerchantSettings;
use Svea\Checkout\OrderRow;

$order = Svea::checkout()->create(new CheckoutOrder(
    currency: 'SEK',
    countryCode: 'SE',
    locale: 'sv-SE',
    clientOrderNumber: 'ORD-001',
    merchantSettings: new MerchantSettings(
        pushUri: route('webhooks.svea'),
        termsUri: route('terms'),
        confirmationUri: route('checkout.confirmation'),
        checkoutUri: route('checkout'),
    ),
    cart: new Cart([
        new OrderRow(quantity: 100, unitPrice: 29900, vatPercent: 2500, sku: 'TSHIRT-BLK-M', name: 'T-Shirt Black M'),
        new OrderRow(quantity: 200, unitPrice: 89900, vatPercent: 2500, sku: 'SNEAKER-WHT-42', name: 'Sneakers White 42'),
    ]),
));

$order->id();        // '12345678' — store this as your Svea order ID
$order->snippet();   // '<script>...</script>' — embed in your checkout page
$order->status();    // 'Created' | 'Final' | 'Cancelled'
```

--------------------------------

### Create Svea Checkout Order (Named Constructor)

Source: https://context7.com/nordkit/svea/llms.txt

Use this method when all order details are available upfront. It constructs a CheckoutOrder object with all necessary parameters before creating the order.

```php
use Svea\Checkout\Cart;
use Svea\Checkout\CheckoutOrder;
use Svea\Checkout\MerchantSettings;
use Svea\Checkout\OrderRow;
use Svea\Exceptions\SveaApiException;

// Named-constructor style — all data available upfront
try {
    $order = Svea::checkout()->create(new CheckoutOrder(
        currency: 'SEK',
        countryCode: 'SE',
        locale: 'sv-SE',
        clientOrderNumber: 'ORD-001',
        merchantSettings: new MerchantSettings(
            pushUri: route('webhooks.svea'),
            termsUri: route('terms'),
            confirmationUri: route('checkout.confirmation'),
            checkoutUri: route('checkout'),
        ),
        cart: new Cart([
            new OrderRow(quantity: 100, unitPrice: 29900, vatPercent: 2500, sku: 'TSHIRT-BLK-M', name: 'T-Shirt Black M'),
            new OrderRow(quantity: 200, unitPrice: 89900, vatPercent: 2500, sku: 'SNEAKER-WHT-42', name: 'Sneakers White 42'),
        ]),
    ));
} catch (SveaApiException $e) {
    // $e->statusCode, $e->sveaCode, $e->sveaMessage
    throw $e;
}

$order->id();        // '12345678' — store as your Svea order ID
$order->snippet();   // '<div>...</div>' — embed in checkout page
$order->status();    // 'Created' | 'Final' | 'Cancelled'
$order->successful(); // bool
$order->getLastResponse()->statusCode; // 201
```

--------------------------------

### Register Subscription using Fluent Builder

Source: https://github.com/nordkit/svea/blob/main/README.md

This fluent builder approach allows chaining subscription configuration methods. The `register()` method automatically handles both registration and verification.

```APIDOC
## Register Subscription using Fluent Builder

### Description
This method provides a fluent interface for configuring and registering a subscription. It allows chaining calls to specify event types and the callback URL. The `register()` method implicitly calls `verify()` after successful registration.

### Method
POST (implied by `register` operation)

### Endpoint
`/subscriptions` (implied)

### Parameters
#### Method Chaining
- **on(...EventType)** - Specifies the event types for the subscription.
- **notifyAt(string callbackUrl)** - Sets the callback URL for the subscription.

### Request Example
```php
$subscription = Svea::subscriptions()
    ->on(EventType::CheckoutOrderCreated, EventType::CheckoutOrderDelivered)
    ->notifyAt('https://myapp.com/webhooks/svea')
    ->register(); // registers and verifies
```

### Response
#### Success Response (200)
- **id** (string) - The unique identifier for the newly created subscription.
- **callbackUrl** (string) - The registered callback URL.
- **events** (array of EventType) - The list of event types subscribed to.
- **isVerified** (bool) - Indicates if the subscription is currently verified.
- **createdAt** (DateTimeImmutable|null) - The timestamp when the subscription was created.

### Response Example
```json
{
  "id": "fbb6c74a-abcd-1234-efgh-0123456789ab",
  "callbackUrl": "https://myapp.com/webhooks/svea",
  "events": [
    "CheckoutOrderCreated",
    "CheckoutOrderDelivered"
  ],
  "isVerified": true,
  "createdAt": "2023-10-27T10:00:00Z"
}
```
```

--------------------------------

### PHP Package File Structure

Source: https://github.com/nordkit/svea/blob/main/NAMING.md

Overview of the directory and file structure for the nordkit/svea PHP package.

```php
src/
├── SveaClient.php                        # Main entry point — lazily resolves services
├── SveaResource.php                      # Base class for all API response objects
│
├── Admin/
│   ├── AdminService.php                  # order(string $id): AdminOrderRequest, task(string $url): TaskResponse
│   ├── AdminOrderRequest.php             # Fluent builder: get, deliver, cancel, add/update/replace rows
│   ├── AdminOrderResponse.php            # Typed response: status(), canDeliver(), deliveryRowIds(), etc.
│   ├── AdminDeliveryRequest.php          # Delivery-scoped: credit(), creditAmount()
│   ├── AdminOrderRow.php                 # Fluent row builder: name, quantity, unitPrice, vatPercent, etc.
│   ├── CreditRequest.php                 # Fluent refund builder: rows(), newRow(), send()
│   ├── TaskResponse.php                  # Async task resource: reference(), completed(), failed()
│   └── SveaOrderStatus.php               # Enum: Open, Delivered, Cancelled, Final
│
├── Checkout/
│   ├── CheckoutService.php               # create(), get(), update()
│   ├── CheckoutOrder.php                 # Fluent order builder: currency, locale, addRow, merchantSettings
│   └── OrderRow.php                      # Fluent checkout row builder
│
├── Exceptions/
│   ├── SveaApiException.php              # 4xx/5xx non-specific errors
│   ├── SveaAuthenticationException.php   # 401 responses
│   ├── SveaConnectionException.php       # Transport-level failures (ConnectException)
│   ├── SveaNotFoundException.php         # 404 responses
│   └── SveaRateLimitException.php        # 429 responses
│
├── Laravel/
│   ├── SveaServiceProvider.php           # Singleton binding, Wiretap integration, config publish
│   └── Facades/
│       └── Svea.php                      # Facade → resolves Svea\SveaClient
│
├── Subscriptions/
│   └── SubscriptionService.php           # register(), list(), get(), delete()
│
├── Support/
│   └── Conditionable.php                 # Trait: when() / unless() for builder chains
│
├── Testing/
│   ├── FakeSveaClient.php                # fake() named constructor; fakeCheckout(), fakeAdmin(), fakeSubscriptions()
│   ├── FakeCheckoutService.php           # Records calls, seeds responses, assertion helpers
│   ├── FakeAdminService.php              # order() returns FakeAdminOrderRequest
│   ├── FakeAdminOrderRequest.php         # Mirrors AdminOrderRequest for tests
│   ├── FakeAdminDeliveryRequest.php      # Mirrors AdminDeliveryRequest for tests
│   ├── FakeCreditRequest.php             # Mirrors CreditRequest for tests
│   ├── FakeSubscriptionService.php       # Records calls, seeds responses
│   └── SveaFakeAssertions.php            # Shared: assertCalled(), assertNotCalled(), assertCalledTimes(), preventStrayRequests()
│
├── Transport/
│   ├── SveaConnector.php                 # HTTP transport: HMAC auth, retry, idempotency key, error mapping
│   ├── SveaResponse.php                  # Wraps PSR-7: ->json, ->headers, ->statusCode, ->successful()
│   └── RetryMiddleware.php               # Exponential backoff on 429 / 5xx
│
└── Webhooks/
    └── WebhookService.php                # verify(string $payload, string $signature): bool

```

--------------------------------

### Retry Logic Configuration

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

This comment block outlines the retry strategy for network requests, including conditions for retrying (e.g., `ConnectException`, specific HTTP status codes) and the delay formula with jitter. It provides an example of retry timing based on the attempt number.

```comment
# Retry on: ConnectException, 429, 500, 503
# Delay formula: min(1000 * 2^attempt, 32000) ms + random 0–1000 ms jitter
# Example with max_retries=2: attempt 1 → ~2 s, attempt 2 → ~4 s
```

--------------------------------

### Register Webhook Subscriptions with Svea

Source: https://context7.com/nordkit/svea/llms.txt

Manage Svea webhook subscriptions to receive order lifecycle events. Use the fluent builder for registration and auto-verification, or the direct add() method. Remember to verify subscriptions, especially after updating the callback URL.

```php
use Svea\Subscriptions\EventType;

// Fluent builder — registers and auto-verifies
$subscription = Svea::subscriptions()
    ->on(EventType::CheckoutOrderCreated, EventType::CheckoutOrderDelivered)
    ->notifyAt('https://myapp.com/webhooks/svea')
    ->register();
```

```php
// Direct add() method
$subscription = Svea::subscriptions()->add(
    callbackUrl: 'https://myapp.com/webhooks/svea',
    eventTypes: [
        EventType::CheckoutOrderCreated,
        EventType::CheckoutOrderDelivered,
        EventType::CheckoutOrderCreditSucceeded,
        EventType::CheckoutOrderCreditFailed,
        EventType::CheckoutOrderClosed,
    ],
);
```

```php
// Verify (required before Svea delivers events; Svea sends a Ping to your URL)
Svea::subscriptions()->verify($subscription->id());
```

```php
// Inspect subscription
$subscription->id();          // 'fbb6c74a-...'
$subscription->callbackUrl(); // 'https://myapp.com/webhooks/svea'
$subscription->events();      // EventType[]
$subscription->isVerified();  // bool
$subscription->createdAt();   // \DateTimeImmutable|null
```

```php
// List all subscriptions
$subscriptions = Svea::subscriptions()->list(); // array<int, Subscription>
```

```php
// Get by ID
$subscription = Svea::subscriptions()->get('fbb6c74a-...');
```

```php
// Update URL or events (URL change requires re-verification)
$updated = Svea::subscriptions()->update(
    'fbb6c74a-...',
    'https://myapp.com/webhooks/svea-new',
    [EventType::CheckoutOrderCreated]
);
Svea::subscriptions()->verify('fbb6c74a-...'); // required after URL change
```

```php
// Remove
Svea::subscriptions()->remove('fbb6c74a-...');
```

```php
// All 10 available event types:
// EventType::CheckoutOrderCreated
// EventType::CheckoutOrderUpdated
// EventType::CheckoutOrderDelivered
// EventType::CheckoutOrderCreditSucceeded
// EventType::CheckoutOrderCreditFailed
// EventType::CheckoutOrderClosed
// EventType::CheckoutOrderPendingStatusReleased
// EventType::StandaloneOrderPendingStatusReleased
// EventType::StandaloneOrderClosed
// EventType::Ping  (verification ping — handle, don't subscribe)
```

--------------------------------

### Pest Test Bootstrap

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Configuration for Pest test suite, specifying which directories to run tests in.

```php
<?php

declare(strict_types=1);

uses(\Orchestra\Testbench\TestCase::class)
    ->in('Unit', 'Integration');
```

--------------------------------

### Webhook::constructEvent()

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Details the `Webhook::constructEvent()` static method, highlighting its independence from dependency injection and its exception handling for signature verification.

```APIDOC
## `Webhook::constructEvent()`

Pure static method — no dependency injection, no framework, works in any PHP context. Throws `SignatureVerificationException` on HMAC mismatch.
```

--------------------------------

### List Subscriptions

Source: https://github.com/nordkit/svea/blob/main/README.md

Lists all current subscriptions, showing their ID, callback URL, verification status, and subscribed events.

```bash
php artisan svea:subscription:list
```

--------------------------------

### Create Checkout Order (Fluent Callback)

Source: https://github.com/nordkit/svea/blob/main/README.md

Creates a new checkout order using a fluent callback style, ideal for dynamic order creation, loops, or conditional rows. Numeric values must adhere to Svea's minor-unit convention.

```php
$order = Svea::checkout()->create(function (CheckoutOrder $order) use ($cart) {
    $order
        ->currency('SEK')
        ->countryCode('SE')
        ->locale('sv-SE')
        ->clientOrderNumber($cart->reference)
        ->merchantSettings(fn (MerchantSettings $s) => $s
            ->pushUri(route('webhooks.svea'))
            ->termsUri(route('terms'))
            ->confirmationUri(route('checkout.confirmation'))
            ->checkoutUri(route('checkout')));

    foreach ($cart->items as $item) {
        $order->addRow(fn (OrderRow $row) => $row
            ->sku($item->sku)
            ->name($item->name)
            ->quantity($item->qty * 100)   // minor units: 100 = 1 unit
            ->unitPrice($item->unit_price) // incl. VAT, minor currency (öre)
            ->vatPercent($item->vat_percent) // minor units: 2500 = 25%
            ->unit('st'));
    }

    $order->when($cart->has_discount, fn ($o) => $o->addRow(
        fn (OrderRow $r) => $r->sku('DISC')->name('Discount')->unitPrice(-500)->quantity(100)->vatPercent(2500)
    ));
});

```

--------------------------------

### Core SDK Directory Structure

Source: https://github.com/nordkit/svea/blob/main/CONTRIBUTING.md

Illustrates the directory layout for the core SDK, distinguishing between pure PHP components and optional Laravel integrations.

```plaintext
src/
  SveaClient.php                  ← pure PHP
  SveaResource.php                ← pure PHP base class
  Support/
    Conditionable.php             ← tiny custom trait, no illuminate
  Laravel/
    SveaServiceProvider.php       ← illuminate/support only
    Svea.php                      ← facade
  Checkout/   Admin/   Subscriptions/   Webhooks/   Transport/   Exceptions/   Testing/
```

--------------------------------

### Update Subscription URL and Verify

Source: https://github.com/nordkit/svea/blob/main/README.md

Updates the subscription's callback URL and initiates the verification process in a single step.

```bash
# Change URL and re-verify in one step
php artisan svea:subscription:update {id} --url=https://new.myapp.com/... --verify
```

--------------------------------

### Configure Svea Environment Variables

Source: https://github.com/nordkit/svea/blob/main/README.md

Add these variables to your `.env` file to configure the Svea integration. Ensure `SVEA_MERCHANT_ID`, `SVEA_SHARED_SECRET`, `SVEA_ENVIRONMENT`, and `SVEA_WEBHOOK_SECRET` are set.

```dotenv
SVEA_MERCHANT_ID=your_merchant_id
SVEA_SHARED_SECRET=your_shared_secret
SVEA_ENVIRONMENT=test
SVEA_WEBHOOK_SECRET=your_webhook_secret
SVEA_SUBSCRIPTION_CALLBACK_URL=your_callback_url
SVEA_MAX_RETRIES=0
SVEA_TIMEOUT=10
SVEA_CHECKOUT_URL=
SVEA_ADMIN_URL=
SVEA_SUBSCRIPTIONS_URL=
```

--------------------------------

### Checkout Order Creation (Fluent Callback)

Source: https://github.com/nordkit/svea/blob/main/README.md

Creates a Svea Checkout order using a fluent callback style, which is more flexible for dynamic order building, such as within loops or conditional logic. It allows for composable order row additions.

```APIDOC
## Create Checkout Order (Fluent Callback)

### Description

Creates a Svea Checkout order using a fluent callback style. This approach is beneficial for dynamically building orders, especially within loops or conditional statements. It allows for a more composable way to add order rows and configure order settings.

### Method

```php
Svea::checkout()->create(function (CheckoutOrder $order) { ... })
```

### Parameters

#### `CheckoutOrder` Callback

Within the callback, you can chain methods on the `$order` object:

- **currency(string $currency)**: Sets the order currency.
- **countryCode(string $code)**: Sets the country code.
- **locale(string $locale)**: Sets the locale.
- **clientOrderNumber(string $number)**: Sets the client order number.
- **merchantSettings(callable $callback)**: Configures merchant settings using a nested callback.
  - Inside the `merchantSettings` callback, configure URIs like `pushUri`, `termsUri`, `confirmationUri`, `checkoutUri`.
- **addRow(callable $callback)**: Adds an order row using a nested callback.
  - Inside the `addRow` callback, configure `sku`, `name`, `quantity`, `unitPrice`, `vatPercent`, `unit` for the order row.
- **when(bool $condition, callable $callback)**: Conditionally adds an order row or applies settings if the condition is true.

#### Optional Chained Methods (same as Named Constructor)

- **merchantData(string $data)**
- **partnerKey(string $key)**
- **recurring()**
- **requireElectronicIdAuthentication()**
- **metadata(array $metadata)**

### Response Example

```php
$order = Svea::checkout()->create(function (CheckoutOrder $order) use ($cart) {
    $order
        ->currency('SEK')
        ->countryCode('SE')
        ->locale('sv-SE')
        ->clientOrderNumber($cart->reference)
        ->merchantSettings(fn (MerchantSettings $s) => $s
            ->pushUri(route('webhooks.svea'))
            ->termsUri(route('terms'))
            ->confirmationUri(route('checkout.confirmation'))
            ->checkoutUri(route('checkout')));

    foreach ($cart->items as $item) {
        $order->addRow(fn (OrderRow $row) => $row
            ->sku($item->sku)
            ->name($item->name)
            ->quantity($item->qty * 100)   // minor units: 100 = 1 unit
            ->unitPrice($item->unit_price) // incl. VAT, minor currency (öre)
            ->vatPercent($item->vat_percent) // minor units: 2500 = 25%
            ->unit('st'));
    }

    $order->when($cart->has_discount, fn ($o) => $o->addRow(
        fn (OrderRow $r) => $r->sku('DISC')->name('Discount')->unitPrice(-500)->quantity(100)->vatPercent(2500)
    ));
});
```
```