class KPM::Installer

def self.from_file(config_path, logger=nil)
  Installer.new(YAML::load_file(config_path), logger)
end

def initialize(raw_config, logger=nil)
  raise(ArgumentError, 'killbill or kaui section must be specified') if raw_config['killbill'].nil? and raw_config['kaui'].nil?
  @config      = raw_config['killbill']
  @kaui_config = raw_config['kaui']
  if logger.nil?
    @logger       = Logger.new(STDOUT)
    @logger.level = Logger::INFO
  else
    @logger = logger
  end
  @nexus_config     = !@config.nil? ? @config['nexus'] : @kaui_config['nexus']
  @nexus_ssl_verify = !@nexus_config.nil? ? @nexus_config['ssl_verify'] : true
end

def install(force_download=false, verify_sha1=true)
  @force_download = force_download
  @verify_sha1 = verify_sha1
  unless @config.nil?
    @bundles_dir = @config['plugins_dir']
    @sha1_file = "#{@bundles_dir}/#{SHA1_FILENAME}"
    install_killbill_server
    install_plugins
    install_default_bundles
  end
  unless @kaui_config.nil?
    install_kaui
  end
end

def install_default_bundles
  return if @config['default_bundles'] == false
  group_id    = 'org.kill-bill.billing'
  artifact_id = 'killbill-platform-osgi-bundles-defaultbundles'
  packaging   = 'tar.gz'
  classifier  = nil
  version     = @config['default_bundles_version'] || LATEST_VERSION
  destination = "#{@config['plugins_dir']}/platform"
  info = KPM::BaseArtifact.pull(@logger, group_id, artifact_id, packaging, classifier, version, destination, @sha1_file, @force_download, @verify_sha1, @nexus_config, @nexus_ssl_verify)
  # The special JRuby bundle needs to be called jruby.jar
  # TODO .first - code smell
  if  !info[:skipped]
    File.rename Dir.glob("#{destination}/killbill-platform-osgi-bundles-jruby-*.jar").first, "#{destination}/jruby.jar"
  end
  info
end

def install_java_plugins
  return if @config['plugins'].nil? or @config['plugins']['java'].nil?
  infos = []
  @config['plugins']['java'].each do |plugin|
    group_id    = plugin['group_id'] || KPM::BaseArtifact::KILLBILL_JAVA_PLUGIN_GROUP_ID
    artifact_id = plugin['artifact_id'] || plugin['name']
    packaging   = plugin['packaging'] || KPM::BaseArtifact::KILLBILL_JAVA_PLUGIN_PACKAGING
    classifier  = plugin['classifier'] || KPM::BaseArtifact::KILLBILL_JAVA_PLUGIN_CLASSIFIER
    version     = plugin['version'] || LATEST_VERSION
    destination = "#{@bundles_dir}/plugins/java/#{artifact_id}/#{version}"
    infos << KPM::KillbillPluginArtifact.pull(@logger, group_id, artifact_id, packaging, classifier, version, destination, @sha1_file, @force_download, @verify_sha1, @nexus_config, @nexus_ssl_verify)
  end
  infos
end

def install_kaui
  group_id    = @kaui_config['group_id'] || KPM::BaseArtifact::KAUI_GROUP_ID
  artifact_id = @kaui_config['artifact_id'] || KPM::BaseArtifact::KAUI_ARTIFACT_ID
  packaging   = @kaui_config['packaging'] || KPM::BaseArtifact::KAUI_PACKAGING
  classifier  = @kaui_config['classifier'] || KPM::BaseArtifact::KAUI_CLASSIFIER
  version     = @kaui_config['version'] || LATEST_VERSION
  webapp_path = @kaui_config['webapp_path'] || KPM::root
  KPM::KauiArtifact.pull(@logger, group_id, artifact_id, packaging, classifier, version, webapp_path, nil, @force_download, @verify_sha1, @nexus_config, @nexus_ssl_verify)
end

def install_killbill_server
  group_id    = @config['group_id'] || KPM::BaseArtifact::KILLBILL_GROUP_ID
  artifact_id = @config['artifact_id'] || KPM::BaseArtifact::KILLBILL_ARTIFACT_ID
  packaging   = @config['packaging'] || KPM::BaseArtifact::KILLBILL_PACKAGING
  classifier  = @config['classifier'] || KPM::BaseArtifact::KILLBILL_CLASSIFIER
  version     = @config['version'] || LATEST_VERSION
  webapp_path = @config['webapp_path'] || KPM::root
  KPM::KillbillServerArtifact.pull(@logger, group_id, artifact_id, packaging, classifier, version, webapp_path, nil, @force_download, @verify_sha1, @nexus_config, @nexus_ssl_verify)
end

def install_plugins
  install_java_plugins
  install_ruby_plugins
end

def install_ruby_plugins
  return if @config['plugins'].nil? or @config['plugins']['ruby'].nil?
  infos = []
  @config['plugins']['ruby'].each do |plugin|
    group_id    = plugin['group_id'] || KPM::BaseArtifact::KILLBILL_RUBY_PLUGIN_GROUP_ID
    artifact_id = plugin['artifact_id'] || plugin['name']
    packaging   = plugin['packaging'] || KPM::BaseArtifact::KILLBILL_RUBY_PLUGIN_PACKAGING
    classifier  = plugin['classifier'] || KPM::BaseArtifact::KILLBILL_RUBY_PLUGIN_CLASSIFIER
    version     = plugin['version'] || LATEST_VERSION
    destination = "#{@bundles_dir}/plugins/ruby"
    infos << KPM::KillbillPluginArtifact.pull(@logger, group_id, artifact_id, packaging, classifier, version, destination, @sha1_file, @force_download, @verify_sha1, @nexus_config, @nexus_ssl_verify)
  end
  infos
end