Include OP-related packager postinstall

The addon-openproject started to bloat due to a number
of rake tasks with environment becoming a necessity.

As any of these rake tasks load the environment, which may take up to 10
seconds, we should strive to include the relevant logic into OpenProject
where possible.

lib/tasks/packager.rake

@@ -0,0 +1,102 @@
+#-- encoding: UTF-8
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+require 'open3'
+namespace :packager do
+
+  def shell_setup(cmd, raise_on_error: true)
+    out_and_err, status = Open3.capture2e(ENV['APP_NAME'], *cmd)
+
+    if status.exitstatus != 0 && raise_on_error
+      raise "Aborting packager setup due to error in installation. Output: #{out_and_err}"
+    end
+  end
+
+
+  task postinstall: [:environment, 'setup:relative_root', 'setup:scm'] do
+
+    # Persist configuration
+    Setting.sys_api_enabled = 1
+    Setting.sys_api_key = ENV['SYS_API_KEY']
+    Setting.protocol = ENV['SERVER_PROTOCOL']
+    Setting.host_name = ENV['SERVER_HOSTNAME']
+
+    # Run customization step, if it is defined.
+    # Use to define custom postinstall steps required after each configure,
+    # or to configure products.
+    if Rake::Task.task_defined?('packager:customize')
+      Rake::Task['packager:customize'].invoke
+    end
+  end
+
+  namespace :setup do
+    task :relative_root do
+      old_relative_root = ENV['RAILS_RELATIVE_URL_ROOT'] || ''
+      relative_root = ENV['SERVER_PATH_PREFIX'] || '/'
+
+      if relative_root != '/' || "#{old_relative_root}/" != relative_root
+        # Rails expects relative root not to have a trailing slash,
+        # but most of our packager setup scripts require it, thus remove it here.
+        new_root = relative_root.chomp('/')
+
+        shell_setup(['config:set', "RAILS_RELATIVE_URL_ROOT=#{new_root}"])
+        ENV['RAILS_RELATIVE_URL_ROOT'] = new_root
+
+        # Need to re-compile assets due to changed paths
+        Rake::Task['assets:precompile'].invoke
+        FileUtils.chmod_R 'a+r', "#{ENV['APP_HOME']}/public/assets/"
+      end
+    end
+
+    task :scm do
+      svn_path = ENV['SVN_REPOSITORIES'] || ''
+      git_path = ENV['GIT_REPOSITORIES'] || ''
+
+      base_url = URI::HTTP.build(protocol: ENV['SERVER_PROTOCOL'], host: ENV['SERVER_HOSTNAME'])
+      prefix = ENV['SERVER_PATH_PREFIX']
+
+      checkout_data = Setting.repository_checkout_data
+      if svn_path.present?
+        # migrate previous repositories with reposman to managed
+        Rake::Task['scm:migrate:managed'].invoke("file://#{svn_path}")
+        checkout_data['subversion'] = { 'enabled' => 1, 'base_url' => URI.join(base_url, prefix, 'svn') }
+      end
+
+      if git_path.present?
+        checkout_data['git'] = { 'enabled' => 1, 'base_url' => URI.join(base_url, prefix, 'git') }
+      end
+
+      Setting.repository_checkout_data = checkout_data
+
+      # Output any remnants of existing repositories in the currently
+      # configured paths of Git and Subversion.
+      Rake::Task['scm:find_unassociated'].invoke
+    end
+  end
+end