#
# Copyright 2014 Chef Software, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require 'uri'
require 'benchmark'

module Omnibus
  class ArtifactoryPublisher < Publisher
    def publish(&block)
      log.info(log_key) { 'Starting artifactory publisher' }
      safe_require('artifactory')

      packages.each do |package|
        # Make sure the package is good to go!
        log.debug(log_key) { "Validating '#{package.name}'" }
        package.validate!

        # Upload the actual package
        log.info(log_key) { "Uploading '#{package.name}'" }

        retries = Config.publish_retries

        begin
          upload_time = Benchmark.realtime do
            artifact_for(package).upload(
              repository,
              remote_path_for(package),
              metadata_for(package),
            )
          end
        rescue Artifactory::Error::HTTPError => e
          if (retries -= 1) != 0
            log.info(log_key) { "Upload failed with exception: #{e}"}
            log.info(log_key) { "Retrying failed publish #{retries} more time(s)..." }
            retry
          else
            raise e
          end
        end

        log.debug(log_key)  { "Elapsed time to publish #{package.name}:  #{1000*upload_time} ms" }

        # If a block was given, "yield" the package to the caller
        block.call(package) if block
      end
    end

    private

    #
    # The artifact object that corresponds to this package.
    #
    # @param [Package] package
    #   the package to create the artifact from
    #
    # @return [Artifactory::Resource::Artifact]
    #
    def artifact_for(package)
      Artifactory::Resource::Artifact.new(
        local_path: package.path,
        client:     client,
        checksums: {
          'md5'  => package.metadata[:md5],
          'sha1' => package.metadata[:sha1],
        }
      )
    end

    #
    # The Artifactory client object to communicate with the Artifactory API.
    #
    # @return [Artifactory::Client]
    #
    def client
      @client ||= Artifactory::Client.new(
        endpoint:       Config.artifactory_endpoint,
        username:       Config.artifactory_username,
        password:       Config.artifactory_password,
        ssl_pem_file:   Config.artifactory_ssl_pem_file,
        ssl_verify:     Config.artifactory_ssl_verify,
        proxy_username: Config.artifactory_proxy_username,
        proxy_password: Config.artifactory_proxy_password,
        proxy_address:  Config.artifactory_proxy_address,
        proxy_port:     Config.artifactory_proxy_port,
      )
    end

    #
    # The metadata for this package.
    #
    # @param [Package] package
    #   the package to generate the metadata for
    #
    # @return [Hash<String, String>]
    #
    def metadata_for(package)
      {
        'omnibus.project'          => package.metadata[:name],
        'omnibus.platform'         => publish_platform(package),
        'omnibus.platform_version' => publish_platform_version(package),
        'omnibus.architecture'     => package.metadata[:arch],
        'omnibus.version'          => package.metadata[:version],
        'omnibus.iteration'        => package.metadata[:iteration],
        'omnibus.md5'              => package.metadata[:md5],
        'omnibus.sha1'             => package.metadata[:sha1],
        'omnibus.sha256'           => package.metadata[:sha256],
        'omnibus.sha512'           => package.metadata[:sha512],
      }
    end

    #
    # The name of the Artifactory repository (as supplied as an option).
    #
    # @return [String]
    #
    def repository
      @options[:repository]
    end

    #
    # The path where the package will live inside of the Artifactory repository.
    # This is dynamically computed from the values in the project definition
    # and the package metadata.
    #
    # @example
    #   chef/11.6.0/chef-11.6.0-1.el6.x86_64.rpm
    #
    # @param [Package] package
    #   the package to generate the remote path for
    #
    # @return [String]
    #
    def remote_path_for(package)
      File.join(
        Config.artifactory_base_path,
        package.metadata[:name],
        package.metadata[:version],
        publish_platform(package),
        publish_platform_version(package),
        package.metadata[:basename],
      )
    end
  end
end