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const baseBet = 100     // how many satoshis to bet initially
const target = 1.50     // target multiplier
const betMultiplier = 3 // what to multiply the bet size by when we lose a wager
const sleepTime = 300   // Ms - milliseconds to pause between bets

let lossCount = 0
this.log(`Starting half target script, balance ${this.balance / 100} bits.`)

while (true) {
  const { multiplier } = await this.bet(betSize(lossCount), target)
  
  await sleep(sleepTime)

  if (multiplier < target) { // [LOSS]
    lossCount++
    this.log(`Lost bet. Multiplying bet size by ${betMultiplier} for new bet size of ${betSize(lossCount)} satoshis.`)
  } else { // [WON]
    lossCount = 0
    this.log(`Won bet. Setting bet size to ${baseBet} satoshis.`)
  }
}

function betSize(lossCount) {
  const bet = baseBet * Math.pow(betMultiplier, lossCount)
  return Math.round(bet / 100) * 100
}

function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms))
}