#
# A define which executes a command inside a container.
#
define docker::exec(
  Optional[Boolean] $detach        = false,
  Optional[Boolean] $interactive   = false,
  Optional[Array] $env             = [],
  Optional[Boolean] $tty           = false,
  Optional[String] $container      = undef,
  Optional[String] $command        = undef,
  Optional[String] $unless         = undef,
  Optional[Boolean] $sanitise_name = true,
  Optional[Boolean] $refreshonly   = false,
  Optional[String] $onlyif         = undef,
) {
  include docker::params

  $docker_command = $docker::params::docker_command

  if $::osfamily == 'windows' {
    $exec_environment = "PATH=${::docker_program_files_path}/Docker/"
    $exec_timeout = 3000
    $exec_path = ["${::docker_program_files_path}/Docker/"]
    $exec_provider = 'powershell'
  } else {
    $exec_environment = 'HOME=/root'
    $exec_path = ['/bin', '/usr/bin']
    $exec_timeout = 0
    $exec_provider = undef
  }

  $docker_exec_flags = docker_exec_flags({
    detach      => $detach,
    interactive => $interactive,
    tty         => $tty,
    env         => any2array($env),
  })


  if $sanitise_name {
    $sanitised_container = regsubst($container, '[^0-9A-Za-z.\-_]', '-', 'G')
  } else {
    $sanitised_container = $container
  }
  $exec = "${docker_command} exec ${docker_exec_flags} ${sanitised_container} ${command}"
  $unless_command = $unless ? {
    undef   => undef,
    ''      => undef,
    default => "${docker_command} exec ${docker_exec_flags} ${sanitised_container} ${$unless}",
  }
  $onlyif_command = $onlyif ? {
    undef     => undef,
    ''        => undef,
    'running' => "${docker_command} ps --no-trunc --format='table {{.Names}}' | grep '^${sanitised_container}$'",
    default   => $onlyif
  }

  exec { $exec:
    environment => $exec_environment,
    onlyif      => $onlyif_command,
    path        => $exec_path,
    refreshonly => $refreshonly,
    timeout     => $exec_timeout,
    provider    => $exec_provider,
    unless      => $unless_command,
  }
}