first commit

app/api/orders/cancel/route.ts

@@ -0,0 +1,90 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { auth } from '@/auth'
+import { prisma } from '@/lib/prisma'
+
+export async function POST(request: NextRequest) {
+  try {
+    const session = await auth()
+    
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+    }
+
+    const { orderId, reason } = await request.json()
+
+    const result = await prisma.$transaction(async (tx) => {
+      // Get order with items
+      const order = await tx.order.findFirst({
+        where: {
+          id: orderId,
+          userId: session.user.id,
+          status: { in: ['PENDING', 'PAID'] } // Only allow cancellation for these statuses
+        },
+        include: {
+          orderItems: true
+        }
+      })
+
+      if (!order) {
+        throw new Error('Order not found or cannot be cancelled')
+      }
+
+      // Update order status
+      const updatedOrder = await tx.order.update({
+        where: { id: orderId },
+        data: {
+          status: 'CANCELLED'
+        }
+      })
+
+      // Restore stock for all items
+      for (const item of order.orderItems) {
+        await tx.product.update({
+          where: { id: item.productId },
+          data: {
+            stock: {
+              increment: item.quantity
+            }
+          }
+        })
+      }
+
+      // If order was paid, reverse commissions
+      if (order.status === 'PAID') {
+        await tx.commission.updateMany({
+          where: { orderId: order.id },
+          data: { status: 'CANCELLED' }
+        })
+
+        // Reverse wallet earnings (you may want to handle this differently)
+        const commissions = await tx.commission.findMany({
+          where: { orderId: order.id }
+        })
+
+        for (const commission of commissions) {
+          await tx.wallet.update({
+            where: { userId: commission.userId },
+            data: {
+              balance: { decrement: commission.amount },
+              totalEarnings: { decrement: commission.amount }
+            }
+          })
+        }
+      }
+
+      return updatedOrder
+    })
+
+    return NextResponse.json({ 
+      success: true,
+      order: result
+    })
+
+  } catch (error) {
+    console.error('Error cancelling order:', error)
+    return NextResponse.json(
+      { error: error instanceof Error ? error.message : 'Failed to cancel order' },
+      { status: 500 }
+    )
+  }
+}