#
# Author:: Fletcher Nichol (<fnichol@nichol.ca>)
# Copyright:: Copyright (c) 2013 Fletcher Nichol
# License:: Apache License, Version 2.0
#
# 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 'chef/knife/server_bootstrap_linode'
require 'chef/knife/ssh'
require 'fakefs/spec_helpers'
require 'net/ssh'
Chef::Knife::ServerBootstrapLinode.load_deps

describe Chef::Knife::ServerBootstrapLinode do
  include FakeFS::SpecHelpers

  before do
    Chef::Log.logger = Logger.new(StringIO.new)
    @knife = Chef::Knife::ServerBootstrapLinode.new
    @stdout = StringIO.new
    @knife.ui.stub!(:stdout).and_return(@stdout)
    @stderr = StringIO.new
    @knife.ui.stub!(:stderr).and_return(@stderr)
    @knife.config[:chef_node_name] = "yakky"
    @knife.config[:platform] = "omnibus"
    @knife.config[:ssh_user] = "root"
  end

  let(:connection) { mock(Fog::Compute::AWS) }

  describe "#linode_bootstrap" do

    before do
      @knife.config[:chef_node_name] = "shave.yak"
      @knife.config[:ssh_user] = "jdoe"
      @knife.config[:identity_file] = "~/.ssh/mykey_dsa"
      @knife.config[:linode_api_key] = "linode123"
      @knife.config[:distro] = "distro-praha"
      @knife.config[:webui_password] = "daweb"
      @knife.config[:amqp_password] = "queueitup"

      ENV['_SPEC_WEBUI_PASSWORD'] = ENV['WEBUI_PASSWORD']
      ENV['_SPEC_AMQP_PASSWORD'] = ENV['AMQP_PASSWORD']
    end

    after do
      ENV['WEBUI_PASSWORD'] = ENV.delete('_SPEC_WEBUI_PASSWORD')
      ENV['AMQP_PASSWORD'] = ENV.delete('_SPEC_AMQP_PASSWORD')
    end

    let(:bootstrap) { @knife.linode_bootstrap }

    it "returns a LinodeServerCreate instance" do
      bootstrap.should be_a(Chef::Knife::LinodeServerCreate)
    end

    it "configs the bootstrap's chef_node_name" do
      bootstrap.config[:chef_node_name].should eq("shave.yak")
    end

    it "configs the bootstrap's ssh_user" do
      bootstrap.config[:ssh_user].should eq("jdoe")
    end

    it "configs the bootstrap's identity_file" do
      bootstrap.config[:identity_file].should eq("~/.ssh/mykey_dsa")
    end

    it "configs the bootstrap's linode_api_key" do
      bootstrap.config[:linode_api_key].should eq("linode123")
    end

    it "configs the bootstrap's distro" do
      bootstrap.config[:distro].should eq("distro-praha")
    end

    it "configs the bootstrap's distro to chef11/omnibus by default" do
      @knife.config.delete(:distro)

      bootstrap.config[:distro].should eq("chef11/omnibus")
    end

    it "configs the bootstrap's distro value driven off platform value" do
      @knife.config.delete(:distro)
      @knife.config[:platform] = "freebsd"

      bootstrap.config[:distro].should eq("chef11/freebsd")
    end

    it "configs the bootstrap's distro based on bootstrap_version and platform" do
      @knife.config.delete(:distro)
      @knife.config[:platform] = "freebsd"
      @knife.config[:bootstrap_version] = "10"

      bootstrap.config[:distro].should eq("chef10/freebsd")
    end

    it "configs the bootstrap's ENV with the webui password" do
      bootstrap
      ENV['WEBUI_PASSWORD'].should eq("daweb")
    end

    it "configs the bootstrap's ENV with the amqp password" do
      bootstrap
      ENV['AMQP_PASSWORD'].should eq("queueitup")
    end
  end

  describe "#linode_connection" do

    before do
      @before_config = Hash.new
      @before_config[:knife] = Hash.new
      @before_config[:knife][:linode_api_key] =
        Chef::Config[:knife][:linode_api_key]

      Chef::Config[:knife][:linode_api_key] = "key"
    end

    after do
      Chef::Config[:knife][:linode_api_key] =
        @before_config[:knife][:linode_api_key]
    end

    it "constructs a connection" do
      Fog::Compute.should_receive(:new).with({
        :provider => 'Linode',
        :linode_api_key => 'key'
      })

      @knife.linode_connection
    end
  end

  describe "#server_ip_address" do

    before do
      @knife.config[:linode_node_name] = 'yak'
      @knife.stub(:linode_connection) { connection }
    end

    context "when server is found" do

      before do
        connection.stub(:servers) { [server] }
      end

      let(:server) do
        stub(:name => 'yak', :status => 1, :public_ip_address => '10.11.12.13')
      end

      it "returns the provisioned ip address" do
        @knife.server_ip_address.should eq('10.11.12.13')
      end

      it "ignores terminated instances" do
        server.stub(:status) { 0 }

        @knife.server_ip_address.should be_nil
      end
    end

    context "when server is not found" do
      before do
        connection.stub(:servers) { [] }
      end

      it "returns nil" do
        @knife.server_ip_address.should be_nil
      end
    end
  end

  describe "#run" do

    before do
      @before_config = Hash.new
      [:node_name, :client_key].each do |attr|
        @before_config[attr] = Chef::Config[attr]
      end
      Chef::Config[:node_name] = "smithers"
      Chef::Config[:client_key] = "/var/tmp/myclientkey.pem"

      @knife.config[:validation_key] = "/var/tmp/validation.pem"
      @knife.config[:identity_file] = "~/.ssh/mykey_dsa"
      @knife.config[:ssh_password] = "booboo"
      @knife.stub(:linode_connection)  { connection }
      @knife.stub(:server_ip_address)  { "11.11.11.13" }
      Chef::Knife::LinodeServerCreate.stub(:new) { bootstrap }
      Knife::Server::SSH.stub(:new) { ssh }
      Knife::Server::Credentials.stub(:new) { credentials }
      credentials.stub(:install_validation_key)
      credentials.stub(:create_root_client)
    end

    after do
      [:node_name, :client_key].each do |attr|
        Chef::Config[attr] = @before_config[attr]
      end
    end

    let(:bootstrap)   { stub(:run => true, :config => Hash.new) }
    let(:ssh)         { stub }
    let(:credentials) { stub.as_null_object }

    it "exits if node_name option is missing" do
      @knife.config.delete(:chef_node_name)

      lambda { @knife.run }.should raise_error(SystemExit)
    end

    it "exits if platform is set to auto" do
      @knife.config[:platform] = "auto"

      lambda { @knife.run }.should raise_error(SystemExit)
    end

    it "bootstraps a linode server" do
      bootstrap.should_receive(:run)

      @knife.run
    end

    it "installs a new validation.pem key from the chef 10 server" do
      @knife.config[:bootstrap_version] = "10"
      Knife::Server::SSH.should_receive(:new).with({
        :host => "11.11.11.13", :user => "root",
        :port => "22", :keys => ["~/.ssh/mykey_dsa"], :password => "booboo"
      })
      Knife::Server::Credentials.should_receive(:new).
        with(ssh, "/etc/chef/validation.pem", {})
      credentials.should_receive(:install_validation_key)

      @knife.run
    end

    it "installs a new validation.pem key from the omnibus server" do
      Knife::Server::SSH.should_receive(:new).with({
        :host => "11.11.11.13", :user => "root",
        :port => "22", :keys => ["~/.ssh/mykey_dsa"], :password => "booboo"
      })
      Knife::Server::Credentials.should_receive(:new).
        with(ssh, "/etc/chef/validation.pem", {:omnibus => true})
      credentials.should_receive(:install_validation_key)

      @knife.run
    end

    it "create a root client key" do
      credentials.should_receive(:create_root_client)

      @knife.run
    end

    it "installs a client key" do
      credentials.should_receive(:install_client_key).
        with("smithers", "/var/tmp/myclientkey.pem")

      @knife.run
    end
  end
end