#!/usr/bin/env ruby
begin
	require "rubygems"
	require "thor"
	require 'alchemy/version'
	require 'rails'
	if Rails.version >= "3.1" || Rails.version < "3.0"
		raise LoadError, "Wrong rails version installed. Please run gem install rails -v'~>3.0.10'"
	end
end

class AlchemyInstaller < Thor
  
  include Thor::Actions

  map "-v" => :version
	map "--version" => :version

	desc "version", "Prints current Alchemy version", :hide => true
  def version
  	puts Alchemy::VERSION
  end

  desc "new PROJECT", "Creates a new Alchemy project."
  method_option :scm, :type => :string, :aliases => "-s", :desc => "Type of scm to use for this project. Leave blank for none."
	method_option :database, :type => :string, :default => 'mysql', :aliases => "-d", :desc => "Type of database to use for this project. Default mysql."
  def new(project)
    project = project.downcase.strip.gsub(/ /, '_')
    if yes?("Install Alchemy into ./#{project}? (y/N)")
      
      say "Generating new Rails App...", :yellow
      
      if system("rails _#{Rails.version}_ new #{project} -m #{File.join(File.dirname(__FILE__), '..', 'lib', 'rails', 'templates', 'alchemy.rb')} -d #{options[:database]} -JT")
        
        @application = project
        
        create_database_yml if options[:database] == 'mysql'
        
        with_standard_set = yes?("\nDo you want to install Alchemys Standardset files into your App? (y/N)")
        
        %x[
          cd ./#{project}
          rails g alchemy:scaffold#{' --with-standard-set' if with_standard_set}
          rm ./public/index.html
          rm ./public/images/rails.png
        ]
        
        if options[:scm]
          
          %x[
            cd ./#{project}
            rm -rf ./tmp/*
            rm -rf ./log/*
            mkdir -p ./index
            mkdir -p ./uploads
          ]
          
          case options[:scm]
            when 'svn'
              server = ask("\nURL of your svn server? (http://svn.magiclabs.de/customers)")
              server = "http://svn.magiclabs.de/customers" if server.empty?
              repository = ask("\nName of the repository? (#{project})")
              repository = project if repository.empty?
              
              say "\nImporting #{project} into #{server}/#{repository} ...", :yellow
              output = %x[svn import ./#{project} #{server}/#{repository} -m 'initial import by Alchemy installer']; imported = $?.success?
              
              if imported
                
                say "Removing and checking out again...", :yellow
                %x[
                  rm -rf ./#{project}
                  svn co #{server}/#{repository}
                ]
                
                say "Committing ignores...", :yellow
                %x[
                  cd ./#{project}
                  svn propset svn:ignore '*' tmp/ log/ index/ uploads/
                  svn propset svn:ignore 'alchemy' ./public/images ./public/stylesheets ./public/javascripts
                  svn propset svn:ignore 'pictures' ./public
                  svn propset svn:ignore 'database.yml' ./config
                  svn commit -m 'set ignores'
                ]
                
                # deploy.rb
                if yes? "\nUse Capistrano for deployment? (y/N)"
                  @repository_url = "#{server}/#{repository}"
                  
                  # ssh settings
                  @ssh_user = ask "SSH User:"
                  @ssh_password = ask "SSH Password:"
                  standard_port = 12312
                  @ssh_port = ask "SSH Port (#{standard_port}):"
                  @ssh_port = standard_port if @ssh_port.empty?
                  
                  # db settings
                  @db_user = ask "Production Database User (#{@ssh_user}):"
                  @db_user = @ssh_user if @db_user.empty?
                  @db_password = ask "Production Database Password:"
                  standard_db_name = "usr_#{@db_user}_1"
                  @db_name = ask "Production Database Name (#{standard_db_name}):"
                  @db_name = standard_db_name if @db_name.empty?
                  standard_host = "localhost"
                  @db_host = ask "Production Database Host (#{standard_host}):"
                  @db_host = standard_host if @db_host.empty?
                  standard_socket = '/var/run/mysqld/mysqld.sock'
                  @db_socket = ask "Production Database Socket (#{standard_socket}):"
                  @db_socket = standard_socket if @db_socket.empty?
                  
                  # deploy_path
                  standard_path = "/var/www/#{@ssh_user}/html/alchemy"
                  @deploy_path = ask "Deploy Path (#{standard_path}):"
                  @deploy_path = standard_path if @deploy_path.empty?
                  
                  # scm settings
                  @scm_user = ask "Subversion User:"
                  @scm_password = ask "Subversion Password:"
                  
                  # server settings
                  @server = ask "Hostname/IP of server to deploy to:"
                  
                  create_deploy_rb
                  
                  say "\nCapifying...", :yellow
                  
                  %x[
                    cd #{project}
                    capify .
                    svn add ./config/deploy.rb ./Capfile
                    svn commit -m 'capified'
                  ]
                  
                end
                
              else
                say "Error while importing!", :red
              end
              
            when 'git'
              gitignore = <<-GIT
                log/*
                tmp/*
                .DS_Store
                upload/*
                index/*
                public/**/alchemy
                public/pictures
                config/database.yml
              GIT
              %x[
                cd #{project}
                echo #{gitignore} > #{project}/.gitignore
                touch ./index/.gitkeep
                touch ./uploads/.gitkeep
                git init .
                git commit -am 'inital commit'
              ]
          end
          
        end
        
        %x[
          cd ./#{project}
          rake alchemy:prepare db:create db:migrate db:seed
        ]
        
        readme = <<-EOF
\nSuccessfully installed Alchemy into ./#{project}

Next steps:

1. Go into your projects folder:

  cd ./#{project}

2. Start your local Rails server:

  rails server

3. Open a browser and enter the following URL:

  http://localhost:3000

4. Follow the instructions to complete the installation!

Thank you for using Alchemy!

EOF
        say readme, :green
        
      else
        say "\nError while installation!\n", :red
      end
      
    else
      return
    end
  end
  
private

  def create_database_yml
    @db_root_password = ask("\nPlease provide your local root password for mysql (Leave blank for none):")
    local_standard_socket = '/tmp/mysql.sock'
    @db_local_socket = ask("\nPlease provide your local mysql socket (#{local_standard_socket}):")
    @db_local_socket = local_standard_socket if @db_local_socket.empty?
    create_file "./#{@application}/config/database.yml", :force => true do
<<-DATABASE
development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: #{@application}_development
  pool: 5
  username: root
  password: #{@db_root_password}
  socket: #{@db_local_socket}

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: #{@application}_test
  pool: 5
  username: root
  password: #{@db_root_password}
  socket: #{@db_local_socket}

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: #{@application}_production
  pool: 5
  username: root
  password: #{@db_root_password}
  socket: #{@db_local_socket}
DATABASE
    end
  end
  
  def create_deploy_rb
    create_file "./#{@application}/config/deploy.rb" do
<<-DEPLOY
# set the applicationname here
set :application, "#{@application}"

# set the apps repository url
set :repository_url, "#{@repository_url}"

# ssh user settings. please change to customers
set :user, "#{@ssh_user}"
set :password, "#{@ssh_password}"
set :port, #{@ssh_port}
set :use_sudo, false

# database
set :database_user, "#{@db_user}"
set :database_password, "#{@db_password}"
set :database_name, "#{@db_name}"
set :database_host, "#{@db_host}"
set :database_socket, "#{@db_socket}"

# domain names
role :app, "#{@server}"
role :web, "#{@server}"
role :db,  "#{@server}", :primary => true

# set the public webserver path
set :deploy_to, "#{@deploy_path}"

set :scm, :subversion
set :scm_user, "#{@scm_user}"
set :scm_password, "#{@scm_password}"

set :repository, Proc.new{ "--username \#{scm_user} --password \#{scm_password} \#{repository_url}" }

after "deploy:setup", "alchemy:shared_folders:create"
after "deploy:setup", "alchemy:database_yml:create"

after "deploy:symlink", "alchemy:shared_folders:symlink"
after "deploy:symlink", "alchemy:database_yml:symlink"

before "deploy:restart", "deploy:migrate"
before "deploy:restart", "alchemy:db:migrate"

before "deploy:restart", "deploy:seed"
before "deploy:restart", "alchemy:assets:copy"

after "deploy", "deploy:cleanup"

namespace :logs do
  desc "show last 50 lines of production.log"
  task :tail do
    run "tail -n50 \#{shared_path}/log/production.log"
  end

  desc "watch tail of production.log and wait for additional data to be appended to the input"
  task :watch do
    stream("tail -f \#{shared_path}/log/production.log")
  end
end

namespace :alchemy do

  namespace :database_yml do

    desc "Creates the database.yml file for server database"
    task :create, :roles => :app do
      db_config = ERB.new <<-EOF
      production:
        adapter: mysql2
        encoding: utf8
        database: \#{database_name}
        username: \#{database_user}
        password: \#{database_password}
        host: \#{database_host}
        socket: \#{database_socket}
      EOF
      run "mkdir -p \#{shared_path}/config" 
      put db_config.result, "\#{shared_path}/config/database.yml"
    end

    desc ""
    task :symlink do
      run "ln -nfs \#{shared_path}/config/database.yml \#{current_path}/config/"
    end

  end

end

namespace :deploy do
  desc "Overwrite for the internal Capistrano deploy:start task."
  task :start, :roles => :app do
    run "echo 'Nothing to start'"
  end

  desc "Restart the server"
  task :restart, :roles => :app do
    run "touch \#{current_path}/tmp/restart.txt"
  end

  desc 'Seeds the database'
    task :seed, :roles => :app, :except => { :no_release => true } do
      run "cd \#{current_path} && RAILS_ENV=production rake db:seed"
  end
end
DEPLOY
    end
  end
  
end

AlchemyInstaller.start