module RatTrap

# File lib/rat_trap.rb, line 83
def self.hello
  puts "hello world"
end

# File lib/rat_trap.rb, line 11
def self.run(args, options)
  file_idx = args.find_index { |arg| arg =~ MSGPACK_FILE_EXT }
  unless file_idx
    puts "please specify a MessagePack(bin) file"
    return
  end
  file = args[file_idx]
  args[file_idx] = '%s'
  cmd = args.join(" ")
  if unpack(file, options)
    tempfile = TEMPFILE_TEMPLATE % File.basename(file)
    path = temp_path(tempfile)
    system(cmd % path)
  end
end

# File lib/rat_trap.rb, line 27
def self.unpack_here(args, options = {})
  file_idx = args.find_index { |arg| arg =~ MSGPACK_FILE_EXT }
  unless file_idx
    puts "please specify a MessagePack(bin) file"
    return
  end
  file = args[file_idx]
  unpack(file, retain: true, here: true)
end

# File lib/rat_trap.rb, line 74
def pretty_print_array(as)
  as.map(&:to_s).join("\n") + "\n"
end

# File lib/rat_trap.rb, line 78
def temp_path(file)
  FileUtils.mkdir_p(TEMP_DIR)
  File.join(TEMP_DIR, file)
end

# File lib/rat_trap.rb, line 37
def unpack(file, options = {})
  unless File.exist?(file)
    puts "file doesn't exist"
    return
  end
  puts "force to unpack rat file" if options[:force]
  basename = File.basename(file)
  tempfile = TEMPFILE_TEMPLATE % basename
  # return true if File.exist?(tempfile) && !options[:force]
  path =
    if options[:here]
      tempfile
    else
      temp_path(tempfile)
    end
  File.open(path, "wb") do |f|
    rat = MessagePack.unpack(File.read(file))
    data =
      case rat
      when Hash
        rat.each do |k, v|
          if v.is_a? Array
            rat[k] = v.map do |row|
              row.to_s.gsub('"', '')
            end
          end
        end
        JSON.pretty_generate(rat)
      when Array
        pretty_print_array(rat)
      end
    f.write(data)
  end
ensure
  FileUtils.rm_rf(tempfile) unless options[:retain]
end