temporalio-test/app/Temporal/OrderFulfillment/OrderActivity.php

<?php

namespace App\Temporal\OrderFulfillment;

use App\Models\Order;
use App\Temporal\Shared\FaultSimulator;
use Illuminate\Support\Facades\Log;
use Temporal\Activity;

class OrderActivity implements OrderActivityInterface
{
    public function validateOrder(int $orderId, array $simulationConfig = []): bool
    {
        FaultSimulator::maybeApply($simulationConfig, 'validateOrder');

        $order = Order::find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        if ($order->status !== 'pending') {
            throw new \RuntimeException("Order #{$orderId} is not in 'pending' status. Current status: {$order->status}");
        }

        Log::info("Order #{$orderId} validated successfully.");

        return true;
    }

    public function checkInventory(int $orderId, array $simulationConfig = []): bool
    {
        FaultSimulator::maybeApply($simulationConfig, 'checkInventory');

        $order = Order::with('items.product')->find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        foreach ($order->items as $item) {
            if ($item->product->stock_quantity < $item->quantity) {
                throw new \RuntimeException(
                    "Insufficient stock for product '{$item->product->name}'. "
                    . "Available: {$item->product->stock_quantity}, Requested: {$item->quantity}"
                );
            }
        }

        Log::info("Inventory check passed for order #{$orderId}.");

        return true;
    }

    public function processPayment(int $orderId, array $simulationConfig = []): string
    {
        FaultSimulator::maybeApply($simulationConfig, 'processPayment');

        $order = Order::find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        $paymentId = 'PAY-' . strtoupper(substr(md5(uniqid((string) $orderId, true)), 0, 12));

        $order->update([
            'status' => 'processing',
            'payment_id' => $paymentId,
        ]);

        Log::info("Payment processed for order #{$orderId}. Payment ID: {$paymentId}");

        return $paymentId;
    }

    public function refundPayment(int $orderId, string $paymentId): bool
    {
        usleep(300000);

        $order = Order::find($orderId);

        if ($order) {
            $order->update([
                'status' => 'refunded',
                'payment_id' => null,
            ]);
        }

        Log::warning("Payment refunded for order #{$orderId}. Payment ID: {$paymentId}");

        return true;
    }

    public function updateInventory(int $orderId, array $simulationConfig = []): bool
    {
        FaultSimulator::maybeApply($simulationConfig, 'updateInventory');

        $order = Order::with('items.product')->find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        foreach ($order->items as $item) {
            $item->product->decrement('stock_quantity', $item->quantity);
        }

        Log::info("Inventory updated (decremented) for order #{$orderId}.");

        return true;
    }

    public function restoreInventory(int $orderId): bool
    {
        usleep(200000);

        $order = Order::with('items.product')->find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        foreach ($order->items as $item) {
            $item->product->increment('stock_quantity', $item->quantity);
        }

        Log::info("Inventory restored (incremented) for order #{$orderId}.");

        return true;
    }

    public function notifyWarehouse(int $orderId, array $simulationConfig = []): bool
    {
        FaultSimulator::maybeApply($simulationConfig, 'notifyWarehouse');

        $order = Order::find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        $order->update(['status' => 'warehouse_notified']);

        Log::info("Warehouse notified for order #{$orderId}.");

        return true;
    }

    public function cancelWarehouseNotification(int $orderId): bool
    {
        usleep(100000);

        $order = Order::find($orderId);

        if ($order) {
            $order->update(['status' => 'warehouse_cancelled']);
        }

        Log::warning("Warehouse notification cancelled for order #{$orderId}.");

        return true;
    }

    public function sendTrackingInfo(int $orderId, string $trackingNumber, array $simulationConfig = []): bool
    {
        FaultSimulator::maybeApply($simulationConfig, 'sendTrackingInfo');

        $order = Order::find($orderId);

        if (!$order) {
            throw new \RuntimeException("Order #{$orderId} not found.");
        }

        $order->update([
            'tracking_number' => $trackingNumber,
            'status' => 'shipped',
        ]);

        Log::info("Tracking info sent for order #{$orderId}. Tracking: {$trackingNumber}");

        return true;
    }
}