// Handler: GET /api/:version/items/:itemId
// Demonstrates path parameters in API versioning
ctx = context()
req = ctx.request()
res = ctx.response()

// Extract API version and item ID
version = req.params.version
item_id = req.params.itemId

// Check API version and respond accordingly
if version == "v1" then
  item = {
    id = item_id,
    name = "Item " + item_id,
    price = 99.99,
    inStock = true,
    apiVersion = "v1"
  }
  res.json(item)
elseif version == "v2" then
  item = {
    id = item_id,
    name = "Item " + item_id,
    price = 99.99,
    inStock = true,
    sku = "SKU-" + item_id,
    warehouse = "US-WEST",
    apiVersion = "v2"
  }
  res.json(item)
else
  res.error(400, "Unsupported API version: " + version)
end