<?php

declare(strict_types=1);

namespace App\Actions\Order;

use App\Data\CreateOrderData;
use App\Models\Order;
use App\Models\User;
use Illuminate\Support\Facades\DB;

class CreateOrderAction
{
    public function __invoke(User $user, CreateOrderData $data): Order
    {
        return DB::transaction(function () use ($user, $data) {
            $order = $this->createOrder($user, $data);
            $this->attachOrderItems($order, $data);

            return $order->fresh(['items']);
        });
    }

    private function createOrder(User $user, CreateOrderData $data): Order
    {
        return $user->orders()->create([
            'status' => $data->status,
            'notes' => $data->notes,
        ]);
    }

    private function attachOrderItems(Order $order, CreateOrderData $data): void
    {
        $order->items()->createMany(
            $data->items->map(fn ($item) => [
                'product_id' => $item->productId,
                'quantity' => $item->quantity,
                'price' => $item->price,
            ])->all()
        );
    }
}

class CreateOrderAction
{
    public function __construct(
        private readonly CalculateOrderTotalAction $calculateTotal,
        private readonly NotifyOrderCreatedAction $notifyOrderCreated,
    ) {}

    public function __invoke(User $user, CreateOrderData $data): Order
    {
        return DB::transaction(function () use ($user, $data) {
            $order = $this->createOrder($user, $data);

            // Compose with other actions
            $total = ($this->calculateTotal)($order);
            $order->update(['total' => $total]);

            ($this->notifyOrderCreated)($order);

            return $order->fresh();
        });
    }
}

class CancelOrderAction
{
    public function __invoke(Order $order): Order
    {
        $this->guard($order);

        return DB::transaction(function () use ($order) {
            $order->updateToCancelled();
            $this->refundPayment($order);
            return $order;
        });
    }

    private function guard(Order $order): void
    {
        throw_unless(
            $order->canBeCancelled(),
            OrderException::cannotCancelOrder($order)
        );
    }
}

public function __invoke(User $user, CreateApplicationData $data): Application
{
    return DB::transaction(function () use ($user, $data) {
        $application = $this->createApplication($user, $data);
        $this->createContacts($application, $data);
        $this->createAddresses($application, $data);
        $this->createDocuments($application, $data);

        return $application;
    });
}

class ProcessOrderAction
{
    private readonly Order $order;

    public function __invoke(Order $order): void
    {
        $this->order = $order;
        $this->guard();

        DB::transaction(function (): void {
            $this->processPayment();
            $this->updateInventory();
            $this->sendNotifications();
        });
    }

    private function guard(): void
    {
        throw_unless($this->order->isPending(), 'Order must be pending');
    }

    private function processPayment(): void
    {
        // Access $this->order without passing it
    }
}

public function store(
    CreateOrderRequest $request,
    CreateOrderAction $action
) {
    $order = $action(user(), CreateOrderData::from($request));
    return OrderResource::make($order);
}

// In controllers
$order = resolve(CreateOrderAction::class)(
    user(),
    CreateOrderData::from($request)
);

// Inside another action
$result = resolve(ProcessPaymentAction::class)($order, $paymentData);

public function __invoke(CreateOrderData $data): Order
{
    return DB::transaction(function () use ($data) {
        $order = Order::create($data->toArray());
        $order->items()->createMany($data->items->toArray());

        return $order;
    });
}

class CreateOrderAction
{
    public function __invoke(User $user, CreateOrderData $data): Order
    {
        if ($user->orders()->pending()->count() >= 5) {
            throw OrderException::tooManyPendingOrders($user);
        }

        return DB::transaction(function () use ($user, $data) {
            return $user->orders()->create($data->toArray());
        });
    }
}

use function Pest\Laravel\assertDatabaseHas;

it('creates an order', function () {
    // Arrange
    $user = User::factory()->create();
    $data = CreateOrderData::testFactory()->make();

    // Act
    $order = resolve(CreateOrderAction::class)($user, $data);

    // Assert
    expect($order)->toBeInstanceOf(Order::class);
    assertDatabaseHas('orders', ['id' => $order->id]);
});

it('throws exception when user has too many pending orders', function () {
    // Arrange
    $user = User::factory()
        ->has(Order::factory()->pending()->count(5))
        ->create();
    $data = CreateOrderData::testFactory()->make();

    // Act & Assert
    expect(fn () => resolve(CreateOrderAction::class)($user, $data))
        ->toThrow(OrderException::class);
});

class UpdateUserAction
{
    public function __invoke(User $user, UpdateUserData $data): User
    {
        $user->update($data->toArray());
        return $user->fresh();
    }
}

class OnboardUserAction
{
    public function __construct(
        private readonly CreateUserProfileAction $createProfile,
        private readonly SendWelcomeEmailAction $sendWelcome,
        private readonly AssignDefaultRoleAction $assignRole,
    ) {}

    public function __invoke(RegisterUserData $data): User
    {
        return DB::transaction(function () use ($data) {
            $user = User::create($data->toArray());

            ($this->createProfile)($user, $data->profileData);
            ($this->assignRole)($user);
            ($this->sendWelcome)($user);

            return $user;
        });
    }
}

class ProcessPaymentAction
{
    public function __construct(
        private readonly StripeService $stripe,
    ) {}

    public function __invoke(Order $order, PaymentData $data): Payment
    {
        $this->guard($order);

        return DB::transaction(function () use ($order, $data) {
            $stripePayment = $this->stripe->charge($data);

            $payment = $order->payments()->create([
                'amount' => $data->amount,
                'stripe_id' => $stripePayment->id,
                'status' => PaymentStatus::Completed,
            ]);

            $order->markAsPaid();

            return $payment;
        });
    }

    private function guard(Order $order): void
    {
        throw_if($order->isPaid(), 'Order already paid');
    }
}

app/Actions/
├── Order/
│   ├── CreateOrderAction.php
│   ├── CancelOrderAction.php
│   ├── ProcessOrderAction.php
│   └── CalculateOrderTotalAction.php
├── User/
│   ├── CreateUserAction.php
│   ├── UpdateUserProfileAction.php
│   └── DeleteUserAction.php
└── Payment/
    ├── ProcessPaymentAction.php
    └── RefundPaymentAction.php

app/Actions/
├── Central/
│   ├── CreateTenantAction.php
│   └── ProvisionDatabaseAction.php
└── Tenanted/
    ├── CreateOrderAction.php
    └── UpdateUserAction.php