#!/usr/bin/env ruby
require "rubygems"
require "thor"

require File.dirname(__FILE__) + "/../lib/integrity"

class WithIntegrity < Thor
  include FileUtils

  desc "install [PATH]",
       "Copy template files to PATH. Next, go there and edit them."
  def install(path)
    @root = File.expand_path(path)

    create_dir_structure
    copy_template_files
    edit_template_files
    create_db(root / 'config.yml')
    after_setup_message
  end

  desc "create_db [CONFIG]",
       "Checks the `database_uri` in CONFIG and creates and bootstraps a database for integrity"
  def create_db(config)
    Integrity.new(config)
    DataMapper.auto_migrate!
  end

  private
    attr_reader :root

    def create_dir_structure
      mkdir_p root
      mkdir_p root / "builds"
      mkdir_p root / "log"
    end

    def copy_template_files
      cp Integrity.root / "config" / "config.sample.ru",  root / "config.ru"
      cp Integrity.root / "config" / "config.sample.yml", root / "config.yml"
      cp Integrity.root / "config" / "thin.sample.yml",   root / "thin.yml"
    end

    def edit_template_files
      edit_integrity_configuration
      edit_thin_configuration
    end

    def edit_integrity_configuration
      config = File.read(root / "config.yml")
      config.gsub! %r(sqlite3:///var/integrity.db), "sqlite3://#{root}/integrity.db"
      config.gsub! %r(/path/to/scm/exports),        "#{root}/builds"
      config.gsub! %r(/var/log),                    "#{root}/log"
      File.open(root / "config.yml", "w") { |f| f.puts config }
    end

    def edit_thin_configuration
      config = File.read(root / 'thin.yml')
      config.gsub! %r(/apps/integrity), root
      File.open(root / 'thin.yml', 'w') { |f| f.puts config }
    end

    def after_setup_message
      puts
      puts %Q(Awesome! Integrity was installed successfully!)
      puts
      puts %Q(If you want to enable notifiers, install the gems and then require them)
      puts %Q(in #{root}/config.ru)
      puts
      puts %Q(For example:)
      puts
      puts %Q(  sudo gem install -s http://gems.github.com foca-integrity-email)
      puts
      puts %Q(And then in #{root}/config.ru add:)
      puts
      puts %Q(  require "notifier/email")
      puts
      puts %Q(Don't forget to tweak #{root / "config.yml"} to your needs.)
    end
end

WithIntegrity.start