#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.  The
# ASF licenses this file to you 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.

# The default URL prefix (where to mount Deltacloud API)

# The default driver is 'mock'
ENV['API_DRIVER'] ||= 'mock'
ENV['API_FRONTEND'] ||= 'deltacloud'

load File.join(File.dirname(__FILE__), 'lib', 'deltacloud_rack.rb')

Deltacloud::configure do |server|
  server.root_url '/api'
  server.version Deltacloud::API_VERSION
  server.klass 'Deltacloud::API'
end

Deltacloud::configure(:cimi) do |server|
  server.root_url '/cimi'
  server.version Deltacloud::CIMI_API_VERSION
  server.klass 'CIMI::API'
end

Deltacloud::configure(:ec2) do |server|
  server.root_url '/ec2'
  server.version '2012-04-01'
  server.klass 'Deltacloud::EC2::API'
end

routes = {}

def frontends
  ENV['API_FRONTEND'].split(',').size > 1 ?
    ENV['API_FRONTEND'].split(',') : [ENV['API_FRONTEND']]
end

# If user wants to launch multiple frontends withing a single instance of DC API
# then require them and prepare the routes for Rack
#
# NOTE: The '/' will not be generated, since multiple frontends could have
#       different root_url's
#
frontends.each do |frontend|
  frontend = frontend.strip
  if Deltacloud[frontend.to_sym].nil?
    puts "ERROR: Unknown frontend (#{frontend}). Valid values are 'deltacloud,cimi,ec2'"
    exit(1)
  end
  Deltacloud[frontend.to_sym].require!
  routes.merge!({
    Deltacloud[frontend].root_url => Deltacloud[frontend].klass
  })
end

def static_dir_for(name)
  Rack::Directory.new( File.join(File.dirname(__FILE__), "public", name))
end

# Mount static assets directories and index entrypoint
#
routes.merge!({
  '/' => Deltacloud::IndexApp,
  '/stylesheets' =>  static_dir_for('stylesheets'),
  '/javascripts' =>  static_dir_for('javascripts'),
  '/images' =>  static_dir_for('images')
})

run Rack::Builder.new {
  use Rack::MatrixParams
  run Rack::URLMap.new(routes)
}