#!/usr/bin/env ruby

# (c) Copyright 2014 Hewlett-Packard Development Company, L.P.
#
#    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.

module Setup
  def setup
    create_dir
    create_credentials_file

    file = get_credentials_file
    template = YAML.load_file(file)

    # access key
    begin
      access_key = template['default']['access_key']
    rescue
      puts 'which access key to use'
      access_key = $stdin.gets.chomp
      save_to_credentials_file('access_key', access_key)
    end

    # secret key
    begin
      secret_key = template['default']['secret_key']
    rescue
      puts 'which secret_key key to use'
      secret_key = $stdin.gets.chomp
      save_to_credentials_file('secret_key', secret_key)
    end

    # auth uri
    begin
      auth_uri = template['default']['auth_uri']
    rescue
      puts 'which auth url to use'
      auth_uri = $stdin.gets.chomp
      save_to_credentials_file('auth_uri', auth_uri)
    end

    # tenant id
    begin
      tenant_id = template['default']['tenant_id']
    rescue
      puts 'which tenant id to use'
      tenant_id = $stdin.gets.chomp
      save_to_credentials_file('tenant_id', tenant_id)
    end

    # availability zone
    begin
      availability_zone = template['default']['availability_zone']
    rescue
      puts 'which availability zone to use'
      availability_zone = $stdin.gets.chomp
      save_to_credentials_file('availability_zone', availability_zone)
    end

  end
end

def create_credentials_file
  home = File.expand_path('~')
  file = home + '/.hpcloud/.hpcloud'

  unless File.file?(file)
    File.open(file, 'w') do |f|
      f.write('default:' + "\n")
    end
  end
end


def create_dir
  home = File.expand_path('~')
  path = home + '/.hpcloud'
  unless File.directory?(path) do
      Dir.mkdir(path)
    end
  end
end

def get_credentials_file
  home = File.expand_path('~')
  file = home + '/.hpcloud/.hpcloud'
end

def save_to_credentials_file(key, value)
  home = File.expand_path('~')
  file = home + '/.hpcloud/.hpcloud'

  File.open(file, 'a') do |f|
    f.write('    ' + key + ': ' + value + "\n")
  end
end