#!/usr/bin/env ruby
require 'json'

def verbose command
  puts("--> #{command}") || system(command) || fail("Failed: #{command}")
end

def requires_changelog commits
  for commit in commits
    commit_files=`git diff-tree --no-commit-id --name-only -r #{commit}`.split("\n")
    matches = false
    for committed_file in commit_files
      File.foreach(".changelog-watchlist") do |stem|
        stem = stem.strip
        if stem == ''
          next
        elsif stem.start_with?('!')
          stem_string = stem[1..-1]
          if committed_file.start_with?(stem_string)
            matches = false
          end
        elsif committed_file.start_with?(stem)
          puts 'There are changes within ' + stem
          matches = true
        end
      end
      if matches
        return true
      end
    end
  end
  puts 'Does not contain any changes in the changelog watchlist'
  return false
end

Dir.chdir(File.expand_path(File.join(File.dirname(__FILE__), '..')))
base = File.read('.base-branch').strip
commits = `git rev-list #{base}..`.strip.split("\n")

if commits.size == 0
  puts "OK: branch is equal with #{base}"
  exit 0
end

if requires_changelog(commits)
  changelog = `git diff #{base}.. CHANGELOG.md`.strip
  if changelog.length == 0
    STDERR.puts "FAIL: Requires CHANGELOG, but no CHANGELOG.md entries found since #{base}."
    exit 1
  else
    puts "OK: Changelog changes found"
  end
else
  puts "OK: No Changelog required"
end

load 'script/audit-deps'