#!/usr/bin/env ruby

require 'i18n/tasks'
require 'i18n/tasks/commands'
require 'slop'

err = proc { |message, exit_code|
  STDERR.puts Term::ANSIColor.yellow('i18n-tasks: ' + message)
  exit exit_code
}

command = nil
begin
  slop = Slop.parse(help: true) do
    on('-v', '--version', 'Print the version') {
      puts I18n::Tasks::VERSION
      exit
    }
    ::I18n::Tasks::Commands.cmds.each do |name, attr|
      command name.tr('_', '-') do
        description attr.desc if attr.desc
        instance_exec(&attr.opts) if attr.opts
        run do |opts, args|
          command = [name, opts, args]
        end
      end
    end
  end
rescue Slop::Error => e
  err.call(e.message, 64)
end

if command
  cmd  = ::I18n::Tasks::Commands.new
  meth = command[0]
  opts = command[1].to_hash.reject { |k, v| v.nil? }
  args = command[2]
  begin
    if opts.empty? && args.empty?
      cmd.log_verbose "run #{meth.tr('_', '-')} without arguments"
      cmd.send meth
    else
      opts = opts.merge(arguments: args) unless args.empty?
      cmd.log_verbose "run #{meth.tr('_', '-')} with #{opts.map { |k, v| "#{k}=#{v}" } * ' '}"
      cmd.send meth, opts
    end
  rescue Errno::EPIPE
    # ignore Errno::EPIPE which is throw when pipe breaks, e.g.:
    # i18n-tasks missing | head
  end
else
  err.call("Command unknown: #{ARGV[0]}", 64) if ARGV[0]
end