require 'cucumber'
require 'cucumber/rake/task'
require 'rake'
require 'rake/clean'
require 'rake/rdoctask'
require 'rake/tasklib'
require 'rocco'
require 'rocco/tasks'


module Sniff
  class RakeTasks
    def self.define_tasks
      new.define_tasks
    end

    attr_accessor :earth_domains

    def initialize
      yield self if block_given?

      define_task
    end

    def earth_domains
      @earth_domains ||= :all
    end

    def gemname
      @gemname ||= Dir.glob(File.join(Dir.pwd, '*.gemspec')).first
    end

    def git(cmd, dir = nil, &blk)
      full_cmd = ''
      full_cmd << "cd #{dir} && " if dir
      full_cmd << "unset GIT_DIR && unset GIT_INDEX_FILE && unset GIT_WORK_TREE && git #{cmd}"
      sh full_cmd, &blk
    end

  private
    def define_tasks
      task :console do
        require 'sniff'
        cwd = Dir.pwd
        Sniff.init cwd, :earth => earth_domains

        require 'irb'
        ARGV.clear
        IRB.start
      end

      Rocco::make 'docs/', "lib/#{gemname}/carbon_model.rb"

      desc 'Set up and build rocco docs'
      task :docs_init => :rocco

      desc 'Rebuild rocco docs'
      task :docs => ['pages:sync', :rocco]
      directory 'docs/'

      desc 'Update gh-pages branch'
      task :pages => :docs do
        rev = `git rev-parse --short HEAD`.strip
        git 'add *.html', 'docs'
        git "commit -m 'rebuild pages from #{rev}'", 'docs' do |ok,res|
          if ok
            verbose { puts "gh-pages updated" }
            git 'push -q o HEAD:gh-pages', 'docs' unless ENV['NO_PUSH']
          end
        end
      end

      # Update the pages/ directory clone
      namespace :pages do
        task 'sync' => ['.git/refs/heads/gh-pages', 'docs/.git/refs/remotes/o'] do |f|
          git 'fetch -q o', 'docs'
          git 'reset -q --hard o/gh-pages', 'docs'
          sh 'touch docs'
        end

        file '.git/refs/heads/gh-pages' do |f|
          unless File.exist? f.name
            git 'branch gh-pages --track origin/gh-pages', 'docs' 
          end
        end

        file 'docs/.git/refs/remotes/o' do |f|
          unless File.exist? f.name
            git 'init -q docs'
            git 'remote add o ../.git', 'docs'
          end
        end
      end

      CLOBBER.include 'docs/.git'

      desc 'Run all cucumber tests'
      Cucumber::Rake::Task.new(:features) do |t|
        if ENV['CUCUMBER_FORMAT']
          t.cucumber_opts = "features --format #{ENV['CUCUMBER_FORMAT']}"
        else
          t.cucumber_opts = 'features --format pretty'
        end
      end

      desc "Run all tests with RCov"
      Cucumber::Rake::Task.new(:features_with_coverage) do |t|
        t.cucumber_opts = "features --format pretty"
        t.rcov = true
        t.rcov_opts = ['--exclude', 'features']
      end

      task :test => :features
      task :default => :test

      Rake::RDocTask.new do |rdoc|
        version = File.exist?('VERSION') ? File.read('VERSION') : ""

        rdoc.rdoc_dir = 'rdoc'
        rdoc.title = "#{gemname} #{version}"
        rdoc.rdoc_files.include('README*')
        rdoc.rdoc_files.include('lib/**/*.rb')
      end
    end
  end
end