#!/usr/bin/env bash

start=$(pwd)
target="/lib/modules/"

cd "$target" || exit 1
while IFS= read -r -d '' modules; do
	# echo "Checking $modules"
	delete=1
	while IFS= read -r -d '' kernel; do
		debianversion="${kernel/vmlinuz-/}"
		osmcversion="${kernel/kernel-/}"
		osmcversion="${osmcversion/%.img/}"
		if [[ "$debianversion" == "$modules" ]]; then
			echo "Keeping $modules (debian)"
			delete=0
		elif [[ "$osmcversion" == "$modules" ]]; then
			echo "Keeping $modules (osmc)"
			delete=0
		fi
	done < <(find /boot/ -maxdepth 1 \( -name "vmlinuz-*" -o -iname "kernel-*" \) -printf "%f\0")
	if [[ $delete -eq 1 ]]; then
		if [[ -d "$modules" ]]; then
			echo "Deleting $modules"
			# /bin/rm -rfv "$modules"
		fi
	fi
done < <(find "$target" -mindepth 1 -maxdepth 1 -type d -printf "%f\0")
cd "$start" || exit 1