Display price impact of a swap

[secretshardul]

I plan on working on this. Any resources / API on how price impact can be found? Currently plan on looking at the bid / ask slab. Will traverse down bids until order size is filled. The price tick of this bid will be the new price, from which price impact will be calculated.

Pseudocode:

let unfilled_order_size = toAmount
let bids = [b1, b2, b3, ...]
let current_bid
for bid in bids {
  current_bid = bid
  unfilled_order_size -= bid.size
  if unfilled_order_size <= 0 {
    break
  }
}

price_impact = mid_price - current_bid.price
price_impact_percentage = 100 * price_impact / mid_price