Topic: Any bot developers? I'm working on a JavaScript bot library and want feedback (Read 85 times)

/**
 * Basic swing trading strategy example. Buys when price is a desired percentage below a configured midpoint, and submits an accompanying sell at a desired percentage above the midpoint. Once a buy has been submitted, no more buys will be submitted until the accompanying sell has filled.
 */

// ----------------------------------------------------------------------------
//                Step 1 - define the config inputs
// ----------------------------------------------------------------------------
const market = input({
  type: input.market,
  label: 'The market (i.e. trade pair on an exchange) that this bot monitors and submits orders to',
  required: true
});
const midpoint = input({
  type: input.number,
  label: 'The midpoint price that buy and sell triggers will be centered around',
  required: true
});
const percentBelowToBuy = input({
  type: input.number,
  label: 'Buy trigger - When the price goes <= the midpoint by this percent, a buy is triggered',
  required: true,
  default: 3,
  min: 0.1,
  max: 50
});
const percentAboveToSell = input({
  type: input.number,
  label: 'Sell price - When a buy has been submitted, an accompanying sell will be submitted at this percent above the midpoint',
  required: true,
  default: 3,
  min: 0.1,
  max: 99
});
const orderAmount = input({
  type: input.number,
  label: 'Amount that will be used for each buy and sell order',
  required: true
});
// ----------------------------------------------------------------------------
//                Step 2 - define any variables the bot will use
// ----------------------------------------------------------------------------
const buyTriggerPrice = midpoint * (100 - percentBelowToBuy) / 100;
const sellTriggerPrice = midpoint * (100 + percentAboveToSell) / 100;
let hasEnteredPosition = false;// if a buy has been submitted and we've entered a position. if true, we are now waiting for the accompanying sell trigger
let submittedBuyOrders = series(); // store all submitted buy orders in a series
let submittedSellOrders = series(); // store all submitted sell orders in a series

// ----------------------------------------------------------------------------
//                Step 3 - define the execution logic
// ----------------------------------------------------------------------------
// finally, define the run execution logic that is run on every iteration
run(async () => {
  // get the last price on this market
  const last = market.last;
  if (hasEnteredPosition === false) {
    // if we haven't entered a position yet, check if we should buy
    const shouldBuy = last <= buyTriggerPrice;
    if (shouldBuy) {
      // record that we've entered a position
      hasEnteredPosition = true;
      // submit the buy order as a market order
      const thisBuyOrder = await submitOrder({
        type: ORDER_TYPES.MARKET_BUY,
        amount: orderAmount
      });
      // store this order in a series so we have access to all submitted orders
      submittedBuyOrders.add(thisBuyOrder);
      // immediately submit the accompanying sell at the configured price trigger for our exit
      const thisSellOrder = await submitOrder({
        type: ORDER_TYPES.LIMIT_SELL,
        rate: sellTriggerPrice,
        amount: orderAmount
      });
      // again store this order in a series so we have access to all submitted orders
      submittedSellOrders.add(thisSellOrder);
    }
  } else if (hasEnteredPosition === true) {
    // if we've entered a position then we've already submitted the limit sell when we bought
    // so need to check if it's filled or not. if it's filled, we are no longer in a position
    // note: submittedSellOrders.get() defaults to returning the most recently added order. we can get previous orders with submittedSellOrders.get(index)
    const sellOrderForThisPosition = submittedSellOrders.get();
    if (sellOrderForThisPosition.status === ORDER_STATUSES.closed) {
      // the limit sell order that accompanies our buy has filled! we've successfully exited our position
      hasEnteredPosition = false;
    }
  }
});