prantlf/nettime

import { events, getDuration } from './timings.js'
import { sprintf } from 'sprintf-js'

function printMilliseconds (timings) {
  let lastTiming = [0, 0]
  const output = [
    'Phase             Finished Duration',
    '-----------------------------------'
  ]
  for (const event in events) {
    const timing = timings[event]
    if (timing) {
      const timeFraction = Math.round(timing[1] / 1e6)
      const duration = getDuration(lastTiming, timing)
      const durationFraction = Math.round(duration[1] / 1e6)
      output.push(sprintf('%-17s %3d.%03ds %3d.%03ds',
        events[event], timing[0], timeFraction, duration[0], durationFraction))
      lastTiming = timing
    }
  }
  output.push('-----------------------------------')
  return output
}

function printNanoseconds (timings) {
  let lastTiming = [0, 0]
  const output = [
    'Phase             Finished       Duration',
    '-----------------------------------------------'
  ]
  for (const event in events) {
    const timing = timings[event]
    if (timing) {
      const timeFraction = Math.round(timing[1] / 1000) / 1000
      const duration = getDuration(lastTiming, timing)
      const durationFraction = Math.round(duration[1] / 1000) / 1000
      output.push(sprintf('%-17s %3ds %7.3fms %3ds %7.3fms',
        events[event], timing[0], timeFraction, duration[0], durationFraction))
      lastTiming = timing
    }
  }
  output.push('-----------------------------------------------')
  return output
}

export function printTimings (timings, timeUnit) {
  const print = timeUnit === 's+ns' ? printNanoseconds : printMilliseconds
  return print(timings).join('\n')
}