# Revision: 10/12/2011 9:13:05 AM

# TODO recognize more git commands
# TODO better handling of aliases as not all have my custom aliases :(
# TODO code clean this little experiment
# TODO enable full git subcommand options to be passed to git

root = File.expand_path File.dirname(__FILE__)

def usage_and_exit(msg=USAGE, code=-1)
  STDERR.puts msg
  exit(code)
end

USAGE = <<-EOT
usage: git all GIT_COMMAND

where GIT_COMMAND is one of:
  br     branch
  fetch  fetch
  st     status
EOT

VALID_CMDS = [
  :br,
  :fetch,
  :st,
]

usage_and_exit unless ARGV.length > 0

options = {}
options[:debug] = ARGV.delete('--debug') || ARGV.delete('-d')

cmd = ARGV.shift.downcase.to_sym
usage_and_exit unless VALID_CMDS.include?(cmd)

require 'open3'

begin
  require 'psych'
rescue LoadError
ensure
  require 'yaml'
end

begin
  excludes = YAML.load_file('.gitall_ignore')
rescue ::Exception
  STDERR.puts %q[No '.gitall_ignore' found; processing all '*-git' dirs...]
end

updated = []

Dir.glob('*-git').each do |dir|
  if excludes
    next if excludes.include?(dir)
  end

  Dir.chdir(dir) do
    puts "[#{cmd.upcase}] #{dir}"

    results, status = Open3.capture2e("git #{cmd}", :binmode => true)

    case cmd
    when :st, :br
      puts results
    when :fetch
      #unless results.empty?
      if results =~ /^From/
        updated << dir
        puts results
      end
    end

    print "Exit status: #{status.exitstatus}\n\n" if options[:debug]
  end
end

if updated.length > 0
  puts <<-EOT

The following repos were updated:

#{updated.join("\n")}
EOT
end