#!/usr/bin/env ruby

environment_tag = ARGV[0]&.strip

if environment_tag.nil? || environment_tag.empty?
  puts "Usage: story-ids-deployed ENVIRONMENT"
  exit 1
end

commit_range = `git tag -l #{environment_tag}* | tail -n 2 | tr '\n' ' ' | sed -e 's/ /../'`

if commit_range.nil? || commit_range.empty?
  puts "Empty commit range! Are there any commits tagged with #{environment_tag}?"
  exit 1
end

commit_message_bodies = `git log --pretty=%b #{commit_range}`.strip
story_ids = commit_message_bodies.
  scan(/\[Finishes\s*#(\d+)|,\s*#(\d+)\]|Fixes\s*#(\d+)|,\s*#(\d+)|#(\d+)\]/).
  flatten.
  compact.
  uniq

puts story_ids.join("\n")