#!/usr/bin/env bash

BATCHSIZE=1

progress-bar() {
	local current=$1
	local len=$2

	local bar_char='|'
	local empty_char=' '
	local length=50
	local perc_done=$((current * 100 / len))
	local num_bars=$((perc_done * length / 100))

	local i
	local s='['
	for ((i = 0; i < num_bars; i++)); do
		s+=$bar_char
	done
	for ((i = num_bars; i < length; i++)); do
		s+=$empty_char
	done
	s+=']'

	echo -ne "$s $current/$len ($perc_done%)\r"
}

process-files() {
	local files=("$@")

	sleep .01
}

shopt -s globstar nullglob

echo 'finding files'
files=(./**/*cache)
len=${#files[@]}
echo "found $len files"

for ((i = 0; i < len; i += BATCHSIZE)); do
	progress-bar "$((i+1))" "$len"
	process-files "${files[@]:i:BATCHSIZE}"
done
progress-bar "$len" "$len"

echo