set :domain, "111.222.333.444"
set :application, "YOURAPP"

set :keep_releases, 2
set :repository, "git@#{domain}:#{application}.git"
set :scm, :git
set :deploy_via, :remote_cache
set :deploy_to, "/var/www/#{application}"

set :user, "deploy"
set :runner, "mongrel"
set :use_sudo, :false

set :mongrel_conf, "#{current_path}/config/mongrel_cluster.yml"

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

# == CONFIG ====================================================================
namespace :init do
  namespace :config do
    desc "Create database.yml"
    task :database do
      set :db_user, Capistrano::CLI.ui.ask("database user: ")
      set :db_pass, Capistrano::CLI.password_prompt("database password: ")
      database_configuration =<<-EOF
---
login: &login
  adapter: mysql
  database: #{application}
  host: localhost
  username: #{db_user}
  password: #{db_pass}

production:
  <<: *login

EOF
      run "mkdir -p #{shared_path}/config"
      put database_configuration, "#{shared_path}/config/database.yml"
    end

    desc "Create mongrel_cluster.yml"
    task :mongrel do
      mongrel_cluster_configuration = <<-EOF
---
user: mongrel
cwd: #{current_path}
log_file: #{current_path}/log/mongrel.log
port: "8000"
environment: production
group: mongrel
address: 127.0.0.1
pid_file: #{current_path}/tmp/pids/mongrel.pid
servers: 3
EOF
      run "mkdir -p #{shared_path}/config"
      put mongrel_cluster_configuration, "#{shared_path}/config/mongrel_cluster.yml"
    end

    desc "Symlink shared configurations to current"
    task :localize, :roles => [:app] do
      %w[mongrel_cluster.yml database.yml].each do |f|
        run "ln -nsf #{shared_path}/config/#{f} #{current_path}/config/#{f}"
      end
    end
  end
end


# == NGINX =====================================================================
namespace :nginx do
  desc "Start Nginx on the app server."
  task :start, :roles => :app do
    sudo "/etc/init.d/nginx start"
  end

  desc "Restart the Nginx processes on the app server by starting and stopping the cluster."
  task :restart , :roles => :app do
    sudo "/etc/init.d/nginx restart"
  end

  desc "Stop the Nginx processes on the app server."
  task :stop , :roles => :app do
    sudo "/etc/init.d/nginx stop"
  end
end

# == DATABASE ==================================================================
namespace :db do
  desc "Backup your Database to #{shared_path}/db_backups"
  task :backup, :roles => :db, :only => {:primary => true} do
    set :db_user, Capistrano::CLI.ui.ask("Database user: ")
    set :db_pass, Capistrano::CLI.password_prompt("Database password: ")
    now = Time.now
    run "mkdir -p #{shared_path}/backup"
    backup_time = [now.year,now.month,now.day,now.hour,now.min,now.sec].join('-')
    set :backup_file, "#{shared_path}/backup/#{application}-snapshot-#{backup_time}.sql"
    run "mysqldump --add-drop-table -u #{db_user} -p #{db_pass} #{application} --opt | bzip2 -c > #{backup_file}.bz2"
  end
end

# == MONGREL ===================================================================
namespace :deploy do
  desc "Start mongrel cluster"
  task :start do
    run  "cd #{current_path} && sudo mongrel_rails cluster::start"
  end

  desc "Stop mongrel cluster"
  task :stop do
    run  "cd #{current_path} && sudo mongrel_rails cluster::stop"
  end

  desc "Restart mongrel cluster"
  task :restart do
    run  "cd #{current_path} && sudo mongrel_rails cluster::restart"
  end
end

# == TASKS =====================================================================
before "deploy:migrate", "db:backup"

after "deploy", "deploy:cleanup"
after "deploy:migrations", "deploy:cleanup"
after "deploy:setup", "init:config:database"
after "deploy:setup", "init:config:mongrel"
after "deploy:symlink", "init:config:localize"

task :after_update_code do
  sudo "chown mongrel:mongrel #{release_path}/tmp -R"
  sudo "chown mongrel:mongrel #{release_path}/log -R"
  sudo "chown mongrel:mongrel #{shared_path}/pids -R"
end