issues

#!/usr/bin/env ruby

require 'set'
require 'uri'
require 'net/http'
require 'json'

URL = 'https://projects.theforeman.org'

unless ARGV.size == 3
  puts "Usage: #{$0} PROJECT RELEASE_NAME PREV_RELEASE_NAME"
  puts "Example: #{$0} foreman 3.7.0 3.6.0"
  exit 1
end

@project_name = ARGV[0]
current_release_name = ARGV[1]
prev_release_name = ARGV[2]

git_issues = Set.new(`git log --oneline #{prev_release_name}.. | grep -i fixes | grep -E -o \"[ ,]#[0-9]*\" | sed -e 's/[ ,]#//g'`.split.map(&:to_i))

def url_to_json(uri)
  response = Net::HTTP.get(uri)
  JSON.parse(response)
end

# Determine version
def get_version_id(project, release)
  uri = URI("#{URL}/projects/#{project}/versions.json")
  result = url_to_json(uri)
  return nil if result['versions'].nil?
  result = result['versions'].detect{|v| v['name'] == release }
  return nil if result.nil?
  result['id']
rescue StandardError => e
  puts "Error getting version list from #{uri}: #{e}"
  exit 1
end

current_release_id = get_version_id(@project_name, current_release_name)
prev_release_id = get_version_id(@project_name, prev_release_name)


if current_release_id.nil?
  puts "Release #{current_release_name} not found in the project #{@project_name}"
  exit 1
end

def gather_issues(release_id, offset = 0)
  params = [
    ['offset', offset],
    ['limit', '100'],
    ['f[]', 'subproject_id'],
    ['op[subproject_id]', '!*'],
    ['f[]', 'status_id'],
    ['op[status_id]', '='],
    ['v[status_id][]', '5'],
    ['f[]', 'cf_12'],
    ['op[cf_12]', '='],
    ['v[cf_12][]', release_id],
  ]
  uri = URI("#{URL}/projects/#{@project_name}/issues.json?#{URI.encode_www_form(params)}")
  result = url_to_json(uri)
  if result['total_count'].to_i - offset - 100 <= 0
    result['issues']
  else
    result['issues'] += gather_issues(release_id, offset + 100)
  end
end
redmine = Set.new(gather_issues(current_release_id).map{|issue| issue['id']})
redmine_prev = Set.new(gather_issues(prev_release_id).map{|issue| issue['id']})

puts "Issues only in redmine:"
puts (redmine - git_issues).sort.map{|id| "#{URL}/issues/#{id}"}.join("\n")

puts "Issues only in git:"
puts (git_issues - redmine - redmine_prev).sort.map{|id| "#{URL}/issues/#{id}"}.join("\n")