class ikiwiki {
  package { "ikiwiki":
    ensure => installed,
  }

  case $apache_sites_folder {
    '': { fail("you need to define \$apache_sites_folder for ikiwiki module") }
  }

  file { "/usr/local/sbin/ikiwiki-deploy":
    ensure  => present,
    content => template('ikiwiki/deploy.sh.erb'),
    owner   => root,
    group   => root,
    mode    => 755,
  }

  define instance($base_url = false, $ensure = 'present', $description = false,
                  $adminuser = 'yourname', $adminemail = 'me@example.org', $instance = 'ikiwiki') {

    $desc = $decription ? {
      ''      => $title,
      false   => $title,
      default => $description,
    }

    $ikiwiki_base = $base_url ? {
      false   => $domain,
      default => $base_url,
    }

    file { "/etc/ikiwiki/$name.setup":
      ensure  => $ensure,
      content => template('ikiwiki/ikiwiki.setup.erb'),
      owner   => root,
      group   => root,
      mode    => 644,
      notify  => Exec["ikiwiki --setup /etc/ikiwiki/$name.setup"],
    }

    case $ensure {
      'present': {
        exec { "ikiwiki --setup /etc/ikiwiki/$name.setup":
          user        => www-data,
          refreshonly => true,
        }
    
        exec { "/usr/local/sbin/ikiwiki-deploy $name $instance":
          unless  => "/bin/sh -c '[ -f ${apache_sites_folder}/${name}/${instance}_src/index.mdw ]'",
          user    => root,
        }
    
        if !defined(File["${apache_sites_folder}/${name}/${instance}_src"]) {
          file { "${apache_sites_folder}/${name}/${instance}_src":
            ensure  => directory,
            owner   => www-data,
            group   => www-data,
            recurse => true,
            notify  => Exec["ikiwiki --setup /etc/ikiwiki/$name.setup"],
            require => File["${apache_sites_folder}/${name}"],
          }
        }

        if !defined(File["${apache_sites_folder}/${name}/${instance}"]) {
          file { "${apache_sites_folder}/${name}/${instance}":
            ensure  => directory,
            owner   => www-data,
            group   => www-data,
            recurse => true,
            require => File["${apache_sites_folder}/${name}"],
          }
        }

        if !defined(File["${apache_sites_folder}/${name}"]) {
          file { "${apache_sites_folder}/${name}":
            ensure  => directory,
            owner   => root,
            group   => root,
          }
        }

        # The post-update hook should have www-data as owner so
        # gitosis can do a setuid to it and write to ikiwiki
        # folders without messing the permission scheme.
        #
        # See http://ikiwiki.info/rcs/git/
        #     http://ikiwiki.info/forum/multi-user_setup_of_ikiwiki__44___gitosis_and_apache2_in_Debian_Sid/
        #
        file { "/var/git/repositories/${name}.git/hooks/post-update":
          ensure => present,
          owner  => www-data,
          group  => gitosis,
          mode   => 4550,
        }
      }
    }
  }
}