macos-night-shift.ts

// Name: Night Shift
// Description: Control Night Shift on macOS
// Author: Pavel 'Strajk' Dolecek
// Acknowledgements:
// - https://github.com/smudge/nightlight
// - https://github.com/shmulvad/alfred-nightshift/
// Notes:
// nightlight CLI usage:
// on/off: `nightlight on|off|toggle`, status will show current state
// temp: `nightlight temp [0-100]`, no argument will show current temperature
// schedule: `nightlight schedule [start|off|HH:MM HH:MM]`

import "@johnlindquist/kit"
import {Choice} from "@johnlindquist/kit";

async function main() {
  await execa('which', ['nightlight'])
    .catch(async () => {
      let choice = await arg({
        placeholder: `Nightlight CLI required, but not installed, install?`,
        choices: ['Yes', 'No']
      })
      if (choice !== 'Yes') {
        await notify(`OK, not installing Nightlight CLI & exiting`)
        exit() // exit whole script
      }
      console.log(`Installing Nightlight CLI... on Apple Silicon it might take a while because precompiled binaries are not available yet, see https://github.com/smudge/nightlight/issues/22`)
      await terminal(`brew install smudge/smudge/nightlight`)
      await arg("Press enter when installing in terminal finishes...")
      console.clear() // Clear previous console.log
      return main()
    })

  let status = execaSync('nightlight', ['status']).stdout
  let temp = execaSync('nightlight', ['temp']).stdout

  let choices: Choice[] = [{
    name: 'Toggle',
    value: 'toggle'
  }, {
    name: 'Off',
    value: 'off'
  }, {
    name: 'On',
    value: 'on'
  }, {
    name: 'On & 25%',
    value: 'temp 25'
  }, {
    name: 'On & 50%',
    value: 'temp 50'
  }, {
    name: 'On & 75%',
    value: 'temp 75'
  }, {
    name: 'On & 100%',
    value: 'temp 100'
  }]

  let choice = await arg({
    placeholder: `Either select or type exact amount from 0 to 100`,
    hint: `Current status: ${uppercaseFirst(status)} • Current temperature: ${temp}`,
    choices,
    strict: false // allow arbitrary input
  })

  let args = choice.split(' ')
  let isArg0Number = !isNaN(parseInt(args[0]))
  if (isArg0Number) {
    args = ['temp', args[0]]
  }

  if (args[0] === 'temp') {
    // if setting temp, turn on first
    await execa('nightlight', ['on'])
  }

  await execa('nightlight', args)
    .then(() => notify(`Nightlight set to: ${choice}`))
    .catch(() => notify(`Failed to set Nightlight to: ${choice}`))
}

void main()

function uppercaseFirst(str: string) {
  return str.charAt(0).toUpperCase() + str.slice(1)
}