#!/usr/bin/env bash
set -euo pipefail

cd "$(dirname "$0")/.."

declare -A groups

while IFS= read -r line; do
	# skip comments
	[[ $line =~ ^[[:space:]]*# ]] && continue

	if [[ $line =~ ^[[:space:]]*([a-zA-Z0-9_-]+)\.url[[:space:]]*=[[:space:]]*\"(.+)\"\; ]]; then
		name="${BASH_REMATCH[1]}"
		url="${BASH_REMATCH[2]}"

		if [[ $url =~ wntrmute\.dev/kyle/ ]] || [[ $url =~ github:kisom/ ]]; then
			groups[kyle]+="${groups[kyle]:+ }$name"
		elif [[ $url =~ wntrmute\.dev/mc/ ]]; then
			groups[mc]+="${groups[mc]:+ }$name"
		fi
	fi
done < flake.nix

phony=""
targets=""

for group in $(printf '%s\n' "${!groups[@]}" | sort); do
	inputs="${groups[$group]}"
	if [[ -n "$inputs" ]]; then
		phony+=" update-$group"
		targets+="update-${group}:"$'\n\t'"nix flake update ${inputs}"$'\n\n'
	fi
done

printf '.PHONY:%s\n\n%s' "$phony" "$targets"