class Puppet::Util::NetworkDevice::Cisco::Interface

# File lib/puppet/util/network_device/cisco/interface.rb, line 12
def initialize(name, transport)
  @name = name
  @transport = transport
end

# File lib/puppet/util/network_device/cisco/interface.rb, line 77
def command(command)
  transport.command(command) do |out|
    Puppet.err "Error while executing #{command}, device returned #{out}" if out =~ /^%/o
  end
end

# File lib/puppet/util/network_device/cisco/interface.rb, line 59
def execute(property, value, prefix='')
  case COMMANDS[property][1]
  when Array
    COMMANDS[property][1].each do |command|
      transport.command(prefix + command % value) do |out|
        break unless out =~ /^%/
      end
    end
  when String
    command(prefix + COMMANDS[property][1] % value)
  when Proc
    value = [value] unless value.is_a?(Array)
    value.each do |value|
      command(prefix + COMMANDS[property][1].call(*value))
    end
  end
end

# File lib/puppet/util/network_device/cisco/interface.rb, line 35
def update(is={}, should={})
  Puppet.debug("Updating interface #{name}")
  command("conf t")
  command("interface #{name}")

  # apply changes in a defined orders for cisco IOS devices
  [is.keys, should.keys].flatten.uniq.sort {|a,b| COMMANDS[a][0] <=> COMMANDS[b][0] }.each do |property|
    # They're equal, so do nothing.
    next if is[property] == should[property]

    # We're deleting it
    if should[property] == :absent or should[property].nil?
      execute(property, is[property], "no ")
      next
    end

    # We're replacing an existing value or creating a new one
    execute(property, should[property])
  end

  command("exit")
  command("exit")
end