require File.expand_path(File.join(File.dirname(__FILE__), 'spec_helper.rb'))
require File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib', 'whiskey_disk'))
require 'rake'

describe 'requiring the main library' do
  before do
    Rake.application = @rake = Rake::Application.new
    load File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib', 'tasks', 'deploy.rb'))
  end

  after do
    Rake.application = nil
  end

  it 'should make the deploy:setup rake task available' do
    Rake::Task.task_defined?('deploy:setup').should.be.true
  end

  it 'should make the deploy:now rake task available' do
    Rake::Task.task_defined?('deploy:now').should.be.true
  end
end

describe 'WhiskeyDisk' do
  describe 'ensuring that the parent path for the main repository checkout is present' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return({})
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.ensure_main_parent_path_is_present }.should.raise
    end
    
    it 'should attempt to create the parent path for the repository' do
      WhiskeyDisk.ensure_main_parent_path_is_present
      WhiskeyDisk.buffer.last.should.match(%r{mkdir -p /path/to/main})
      WhiskeyDisk.buffer.last.should.not.match(%r{/path/to/main/repo})
    end
  end

  describe 'ensuring that the parent path for the configuration repository checkout is present' do
    before do
      @parameters = { 'deploy_config_to' => '/path/to/config/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the configuration deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return({})
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.ensure_config_parent_path_is_present }.should.raise
    end
    
    it 'should attempt to create the parent path for the repository' do
      WhiskeyDisk.ensure_config_parent_path_is_present
      WhiskeyDisk.buffer.last.should.match(%r{mkdir -p /path/to/config})
      WhiskeyDisk.buffer.last.should.not.match(%r{/path/to/config/repo})
    end
  end
  
  describe 'checking out the main repository' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo', 'repository' => 'git@ogtastic.com:whiskey_disk.git' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.checkout_main_repository }.should.raise
    end
    
    it 'should fail if the repository is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('repository' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.checkout_main_repository }.should.raise
    end
    
    it 'should work from the main repository checkout parent path' do
      WhiskeyDisk.checkout_main_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/main})
      WhiskeyDisk.buffer.join(' ').should.not.match(%r{cd /path/to/main/repo})
    end
    
    it 'should attempt to clone the main repository to the repository checkout path' do
      WhiskeyDisk.checkout_main_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{clone #{@parameters['repository']} repo})
    end
    
    it 'should ignore errors from failing to clone an existing repository' do
      WhiskeyDisk.checkout_main_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{; true})
    end
  end
  
  describe 'installing a post-receive hook on the checked out main repository' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.install_hooks }.should.raise
    end
    
    # FIXME -- TODO:  MORE HERE
  end
  
  describe 'checking out the configuration repository' do
    before do
      @parameters = { 'deploy_config_to' => '/path/to/config/repo', 'config_repository' => 'git@ogtastic.com:config.git' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end

    it 'should fail if the configuration deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_config_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.checkout_configuration_repository }.should.raise
    end

    it 'should fail if the configuration repository is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('config_repository' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.checkout_configuration_repository }.should.raise
    end

    it 'should work from the configuration repository checkout parent path' do
      WhiskeyDisk.checkout_configuration_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/config})
      WhiskeyDisk.buffer.join(' ').should.not.match(%r{cd /path/to/config/repo})
    end

    it 'should attempt to clone the configuration repository to the repository checkout path' do
      WhiskeyDisk.checkout_configuration_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{clone #{@parameters['config_repository']} repo})
    end

    it 'should ignore errors from failing to clone an existing repository' do
      WhiskeyDisk.checkout_configuration_repository
      WhiskeyDisk.buffer.join(' ').should.match(%r{; true})
    end    
  end
  
  describe 'updating the main repository checkout' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.update_main_repository_checkout }.should.raise
    end
    
    it 'should work from the main repository checkout path' do
      WhiskeyDisk.update_main_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/main/repo})
    end
    
    it 'should attempt to fetch only the master branch from the origin if no branch is specified' do
      WhiskeyDisk.update_main_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git fetch origin \+refs/heads/master:refs/remotes/origin/master})
    end
    
    it 'should attempt to fetch the specified branch from the origin if a branch is specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge({'branch' => 'production'}))
      WhiskeyDisk.reset
      WhiskeyDisk.update_main_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git fetch origin \+refs/heads/production:refs/remotes/origin/production})
    end

    it 'should attempt to reset the master branch from the origin if no branch is specified' do
      WhiskeyDisk.update_main_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git reset --hard origin/master})
    end
    
    it 'should attempt to reset the specified branch from the origin if a branch is specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge({'branch' => 'production'}))
      WhiskeyDisk.reset
      WhiskeyDisk.update_main_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git reset --hard origin/production})
    end
  end
  
  describe 'updating the configuration repository checkout' do
    before do
      @parameters = { 'deploy_config_to' => '/path/to/config/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the configuration deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_config_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.update_configuration_repository_checkout }.should.raise
    end
    
    it 'should work from the main repository checkout path' do
      WhiskeyDisk.update_configuration_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/config/repo})
    end
    
    it 'should attempt to fetch only the master branch from the origin' do
      WhiskeyDisk.update_configuration_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git fetch origin \+refs/heads/master:refs/remotes/origin/master})
    end
    
    it 'should attempt to reset the master branch from the origin' do
      WhiskeyDisk.update_configuration_repository_checkout
      WhiskeyDisk.buffer.join(' ').should.match(%r{git reset --hard origin/master})
    end
  end
  
  describe 'refreshing the configuration' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo', 
                      'deploy_config_to' => '/path/to/config/repo',
                      'environment' => 'production',
                      'project' => 'whiskey_disk' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the main deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.refresh_configuration }.should.raise
    end
    
    it 'should fail if the configuration deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters.merge('deploy_config_to' => nil))
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.refresh_configuration }.should.raise
    end
    
    it 'should use rsync to overlay the configuration checkout for the project in the configured environment onto the main checkout' do
      WhiskeyDisk.refresh_configuration
      WhiskeyDisk.buffer.last.should.match(%r{rsync.* /path/to/config/repo/whiskey_disk/production/ /path/to/main/repo/})
    end
  end
  
  describe 'running post setup hooks' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return({})
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.run_post_setup_hooks }.should.raise
    end
    
    it 'should work from the main checkout directory' do
      WhiskeyDisk.run_post_setup_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/main/repo})
    end
    
    it 'should attempt to run the post setup rake tasks' do
      WhiskeyDisk.run_post_setup_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{rake.*deploy:post_setup})
    end
    
    it 'should use the same environment when running the rake tasks' do
      WhiskeyDisk.run_post_setup_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{to=#{@env}})      
    end
  end
  
  describe 'running post deployment hooks' do
    before do
      @parameters = { 'deploy_to' => '/path/to/main/repo' }
      WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
      WhiskeyDisk.reset
    end
    
    it 'should fail if the deployment path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return({})
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.run_post_deploy_hooks }.should.raise
    end
    
    it 'should work from the main checkout directory' do
      WhiskeyDisk.run_post_deploy_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{cd /path/to/main/repo})
    end
    
    it 'should attempt to run the post deployment rake tasks' do
      WhiskeyDisk.run_post_deploy_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{rake.*deploy:post_deploy})
    end
    
    it 'should use the same environment when running the rake tasks' do
      WhiskeyDisk.run_post_deploy_hooks
      WhiskeyDisk.buffer.join(' ').should.match(%r{to=#{@env}})      
    end
  end
  
  describe 'flushing changes' do
    describe 'when running remotely' do
      before do
        @parameters = { 'domain' => 'www.domain.com', 'deploy_to' => '/path/to/main/repo' }
        WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
        WhiskeyDisk.reset
        WhiskeyDisk.stub!(:bundle).and_return('command string')
        WhiskeyDisk.stub!(:register_configuration)
        WhiskeyDisk.stub!(:run)
      end
      
      it 'should bundle the buffer of commands' do
        WhiskeyDisk.enqueue('x')
        WhiskeyDisk.enqueue('y')
        WhiskeyDisk.should.receive(:bundle).and_return('command string')
        WhiskeyDisk.flush
      end
      
      it 'should use "run" to run all the bundled commands at once' do
        WhiskeyDisk.should.receive(:run).with('command string')
        WhiskeyDisk.flush
      end
    end
    
    describe 'when running locally' do
      before do
        @parameters = { 'deploy_to' => '/path/to/main/repo' }
        WhiskeyDisk::Config.stub!(:fetch).and_return(@parameters)
        WhiskeyDisk.reset
        WhiskeyDisk.stub!(:bundle).and_return('command string')
        WhiskeyDisk.stub!(:system)
      end
      
      it 'should bundle the buffer of commands' do
        WhiskeyDisk.enqueue('x')
        WhiskeyDisk.enqueue('y')
        WhiskeyDisk.should.receive(:bundle).and_return('command string')
        WhiskeyDisk.flush
      end
      
      it 'should use "system" to run all the bundled commands at once' do
        WhiskeyDisk.should.receive(:system).with('command string')
        WhiskeyDisk.flush
      end
    end
  end
  
  describe 'bundling up buffered commands for execution' do
    before do
      WhiskeyDisk.reset
    end
      
    it 'should return an empty string if there are no commands' do
      WhiskeyDisk.bundle.should == ''
    end
    
    it 'should wrap each command with {} and join with &&s' do
      WhiskeyDisk.enqueue("cd foo/bar/baz || true")
      WhiskeyDisk.enqueue("rsync -avz --progress /yer/mom /yo/")
      WhiskeyDisk.bundle.should == "{ cd foo/bar/baz || true ; } && { rsync -avz --progress /yer/mom /yo/ ; }"
    end
  end
  
  describe 'when running a command string remotely' do
    before do
      @domain = 'ogc@ogtastic.com'
      WhiskeyDisk::Config.stub!(:fetch).and_return({ 'domain' => @domain })
      WhiskeyDisk.reset
      WhiskeyDisk.stub!(:system)      
    end
    
    it 'should accept a command string' do
      lambda { WhiskeyDisk.run('ls') }.should.not.raise(ArgumentError)
    end
    
    it 'should require a command string' do
      lambda { WhiskeyDisk.run }.should.raise(ArgumentError)
    end
    
    it 'should fail if the domain path is not specified' do
      WhiskeyDisk::Config.stub!(:fetch).and_return({})
      WhiskeyDisk.reset
      lambda { WhiskeyDisk.run('ls') }.should.raise
    end
    
    it 'should pass the string to ssh with verbosity enabled' do
      WhiskeyDisk.should.receive(:system).with('ssh', '-v', @domain, "set -x; ls")
      WhiskeyDisk.run('ls')
    end
  end
end