#!/usr/bin/env nix-shell
#!ruby
#!nix-shell -p gitMinimal -p ruby -i ruby

require "json"

VERSION_MATCHER = /\A\d+\.\d+\.\d+\z/;
NPM_FORMAT = {
	indent: "  ",
	space: " ",
	object_nl: "\n",
	array_nl: "\n",
}

$version = ARGV.first

unless $version
	STDERR.puts "Needs a new version number.\n"
	exit 1
end

unless $version.match(VERSION_MATCHER)
	STDERR.puts "Argument is not a valid version number.\n"
	exit 1
end

Dir.chdir(File.expand_path(File.join(__dir__(), ".."))) do
	data = JSON.parse(File.read("package.json"))
	data["version"] = $version
	File.write("package.json", JSON.generate(data, NPM_FORMAT) + "\n")
	`git add package.json`
	`git commit -m "Bumps to v#{$version}" package.json`
	`git tag v#{$version}`
end

puts "Don't forget to `git push && git push --tags`";

# vim: ft=ruby