#!/usr/bin/env ruby
$LOAD_PATH << File.join(__dir__, '..', 'lib')
require 'ghn'
require 'optparse'

auth_error_message = <<EOM
Authorization required.

Please set ghn.token to your .gitconfig.
    $ git config --global ghn.token [Your GitHub access token]
EOM

usage = <<USAGE
Usage: #{File.basename $0} [options] [command] [user/repo]
    options:   --open           Open notifications in browser
               --mark-as-read   Mark as read listed notifications

    command:   list             List unread notifications

    user/repo: GitHub user and repository (e.g. github/hubot)
               You can specify it to narrow down target notifications

USAGE

access_token = ENV['ACCESS_TOKEN'] || `git config ghn.token`.chomp
if access_token.nil? || access_token.empty?
  puts auth_error_message; exit!
end
ghn = Ghn.new(access_token)

opts = OptionParser.new
opts.on('--open', 'Open notifications in browser') { |v| ghn.open_browser = true }
opts.on('--mark-as-read', 'Mark as read notifications') { |v| ghn.mark_as_read = true }
opts.on('-h', '--help') { puts usage; exit }
opts.on('--usage') { puts usage; exit}
opts.parse!

if ghn.open_browser?
  ghn.mark_as_read = false
end

if ARGV.first != 'list'
  puts usage; exit
end

ghn.send(*ARGV).each do |notification|
  if ghn.open_browser?
    system "open #{notification}"
  else
    puts notification
  end
end