#!/usr/bin/env bash
set -Eeuo pipefail
shopt -s nullglob

intermediate_dir='/home/ak/screenshots/.unoptimized'
screenshots_dir='/home/ak/screenshots'

for source in /home/ak/Downloads/Screen{s,\ S}hot\ *.png; do
  while (( $(date +%s) - $(date '+%s' --reference "$source") <= 1 )); do
    echo "Waiting for file to settle: $source"
    sleep 1s
  done

  intermediates+=( "$intermediate_dir/${source##*/}" )
  mkdir --parents --verbose "$intermediate_dir"
  mv --no-clobber --verbose "$source" "${intermediates[-1]}"
done

[[ "$(< /sys/class/power_supply/AC/online)" == '1' ]] && o='8' || o='3'
ect -"$o" -keep --mt-file "${intermediates[@]}"

mkdir --parents --verbose "$screenshots_dir"
mv --no-clobber --verbose --target-directory "$screenshots_dir" "${intermediates[@]}"
rmdir --ignore-fail-on-non-empty "$intermediate_dir"