class Githubscore

# File lib/githubscore.rb, line 11
def self.run args
  self.new.run args
end

# File lib/githubscore.rb, line 84
def avg_weeks ary
  return 0 if ary.empty?
  tot_weeks(ary) / ary.size
end

# File lib/githubscore.rb, line 104
def client
  @client ||=
    begin
      endpoints = {}
      endpoints[:api] = git_param(:api)
      endpoints[:web] = git_param(:web)

      auth = {
              :name     => git_param(:name),
              :user     => git_param(:user),
              :oauth    => git_param("oauth-token"),
             }

      unless auth[:user] && auth[:oauth]
        raise "Missing authentication parameters."
      end

      auth[:name] ||= auth[:user]

      Octokit::Client.new :access_token => auth[:oauth]
    end
end

# File lib/githubscore.rb, line 99
def git_param name, default = nil
  param = %x`git config github.#{name}`.chomp
  param.empty? ? default : param
end

# File lib/githubscore.rb, line 94
def oldest ary
  old = ary.map { |h| h[:created_at] }.min
  old && old.iso8601[0..9] || "n/a"
end

# File lib/githubscore.rb, line 32
def process_args args
  args << client.user.login if args.empty?

  repos = args.flat_map { |name|
    case name
    when /^\w+$/ then
      client.repos(name, :type => "owner")
    when /\// then
      client.repo(name)
    else
      abort "Unhandled arg: #{name.inspect}"
    end
  }.uniq

  repos.sort_by { |h|
    -h[:stargazers_count] - h[:watchers_count] - h[:forks_count]
  }.map { |h| h[:full_name] }
end

# File lib/githubscore.rb, line 51
def process_repos repos
  fmt = "\r%4d/%4d"
  max = repos.size

  done = false
  stats = repos.each_with_index.map { |repo, i|
    next if done

    $stderr.print fmt % [i, max]

    issues = begin
               client.list_issues repo
             rescue Interrupt
               done = true
               next
             end

    next if issues.empty?
    prs, bugs = issues.partition { |h| h[:pull_request] }

    [
     repo,
     bugs.count, oldest(bugs), avg_weeks(bugs),
     prs.count,  oldest(prs),  avg_weeks(prs),
     tot_weeks(issues),
    ]
  }.compact

  $stderr.print "\n\n"

  stats
end

# File lib/githubscore.rb, line 15
def run args
  repos = process_args args
  stats = process_repos repos

  sorted = stats.sort_by { |_, bc, _, ba, pc, _, pa, tot| [-tot, -bc-pc] }

  total = 0

  sorted.each do |data|
    total += data[-1]
    puts "%-35s = %3d %10s %3dw | %3d %10s %3dw | %4dw" % data
  end

  puts
  puts "total = %d" % total
end

# File lib/githubscore.rb, line 89
def tot_weeks ary
  return 0 if ary.empty?
  ary.map { |h| NOW - h[:created_at] }.inject(&:+) / SECS_PER_WEEK
end