require 'rake/clean'
require 'rake/testtask'
require 'fileutils'
require 'date'

task :default => :test
task :spec => :test

CLEAN.include "**/*.rbc"

def source_version
  @source_version ||= File.read(File.expand_path("../VERSION", __FILE__)).strip
end

def prev_feature
  source_version.gsub(/^(\d\.)(\d+)\..*$/) { $1 + ($2.to_i - 1).to_s }
end

def prev_version
  return prev_feature + '.0' if source_version.end_with? '.0'
  source_version.gsub(/\d+$/) { |s| s.to_i - 1 }
end

# SPECS ===============================================================

task :test do
  ENV['LANG'] = 'C'
  ENV.delete 'LC_CTYPE'
end

Rake::TestTask.new(:test) do |t|
  t.test_files = FileList['test/*_test.rb']
  t.ruby_opts = ['-r rubygems'] if defined? Gem
  t.ruby_opts << '-I.'
  t.warning = true
end

Rake::TestTask.new(:"test:core") do |t|
  core_tests = %w[base delegator encoding extensions filter
     helpers mapped_error middleware radius rdoc
     readme request response result route_added_hook
     routing server settings sinatra static templates]
  t.test_files = core_tests.map {|n| "test/#{n}_test.rb"}
  t.ruby_opts = ["-r rubygems"] if defined? Gem
  t.ruby_opts << "-I."
  t.warning = true
end

# Rcov ================================================================

namespace :test do
  desc 'Measures test coverage'
  task :coverage do
    rm_f "coverage"
    ENV['COVERAGE'] = '1'
    Rake::Task['test'].invoke
  end
end

# Website =============================================================

desc 'Generate RDoc under doc/api'
task 'doc'     => ['doc:api']
task('doc:api') { sh "yardoc -o doc/api" }
CLEAN.include 'doc/api'

# README ===============================================================

task :add_template, [:name] do |t, args|
  Dir.glob('README.*') do |file|
    code = File.read(file)
    if code =~ /^===.*#{args.name.capitalize}/
      puts "Already covered in #{file}"
    else
      template = code[/===[^\n]*Liquid.*index\.liquid<\/tt>[^\n]*/m]
      if !template
        puts "Liquid not found in #{file}"
      else
        puts "Adding section to #{file}"
        template = template.gsub(/Liquid/, args.name.capitalize).gsub(/liquid/, args.name.downcase)
        code.gsub! /^(\s*===.*CoffeeScript)/, "\n" << template << "\n\\1"
        File.open(file, "w") { |f| f << code }
      end
    end
  end
end

# Thanks in announcement ===============================================

team = ["Ryan Tomayko", "Blake Mizerany", "Simon Rozet", "Konstantin Haase", "Zachary Scott"]
desc "list of contributors"
task :thanks, ['release:all', :backports] do |t, a|
  a.with_defaults :release => "#{prev_version}..HEAD",
    :backports => "#{prev_feature}.0..#{prev_feature}.x"
  included = `git log --format=format:"%aN\t%s" #{a.release}`.lines.map { |l| l.force_encoding('binary') }
  excluded = `git log --format=format:"%aN\t%s" #{a.backports}`.lines.map { |l| l.force_encoding('binary') }
  commits  = (included - excluded).group_by { |c| c[/^[^\t]+/] }
  authors  = commits.keys.sort_by { |n| - commits[n].size } - team
  puts authors[0..-2].join(', ') << " and " << authors.last,
    "(based on commits included in #{a.release}, but not in #{a.backports})"
end

desc "list of authors"
task :authors, [:commit_range, :format, :sep] do |t, a|
  a.with_defaults :format => "%s (%d)", :sep => ", ", :commit_range => '--all'
  authors = Hash.new(0)
  blake   = "Blake Mizerany"
  overall = 0
  mapping = {
    "blake.mizerany@gmail.com" => blake, "bmizerany" => blake,
    "a_user@mac.com" => blake, "ichverstehe" => "Harry Vangberg",
    "Wu Jiang (nouse)" => "Wu Jiang" }
  `git shortlog -s #{a.commit_range}`.lines.map do |line|
    line = line.force_encoding 'binary' if line.respond_to? :force_encoding
    num, name = line.split("\t", 2).map(&:strip)
    authors[mapping[name] || name] += num.to_i
    overall += num.to_i
  end
  puts "#{overall} commits by #{authors.count} authors:"
  puts authors.sort_by { |n,c| -c }.map { |e| a.format % e }.join(a.sep)
end

desc "generates TOC"
task :toc, [:readme] do |t, a|
  a.with_defaults :readme => 'README.md'

  def self.link(title)
    title.downcase.gsub(/(?!-)\W /, '-').gsub(' ', '-').gsub(/(?!-)\W/, '')
  end

  puts "* [Sinatra](#sinatra)"
  title = Regexp.new('(?<=\* )(.*)') # so Ruby 1.8 doesn't complain
  File.binread(a.readme).scan(/^##.*/) do |line|
    puts line.gsub(/#(?=#)/, '    ').gsub('#', '*').gsub(title) { "[#{$1}](##{link($1)})" }
  end
end

# PACKAGING ============================================================

if defined?(Gem)
  GEMS_AND_ROOT_DIRECTORIES = {
    "sinatra" => ".",
    "sinatra-contrib" => "./sinatra-contrib",
    "rack-protection" => "./rack-protection"
  }

  def package(gem, ext='')
    "pkg/#{gem}-#{source_version}" + ext
  end

  directory 'pkg/'
  CLOBBER.include('pkg')

  GEMS_AND_ROOT_DIRECTORIES.each do |gem, directory|
    file package(gem, '.gem') => ["pkg/", "#{directory + '/' + gem}.gemspec"] do |f|
      sh "cd #{directory} && gem build #{gem}.gemspec"
      mv directory + "/" + File.basename(f.name), f.name
    end

    file package(gem, '.tar.gz') => ["pkg/"] do |f|
      sh <<-SH
        git archive \
          --prefix=#{gem}-#{source_version}/ \
          --format=tar \
          HEAD -- #{directory} | gzip > #{f.name}
      SH
    end
  end

  namespace :package do
    GEMS_AND_ROOT_DIRECTORIES.each do |gem, directory|
      desc "Build #{gem} packages"
      task gem => %w[.gem .tar.gz].map { |e| package(gem, e) }
    end

    desc "Build all packages"
    task :all => GEMS_AND_ROOT_DIRECTORIES.keys
  end

  namespace :install do
    GEMS_AND_ROOT_DIRECTORIES.each do |gem, directory|
      desc "Build and install #{gem} as local gem"
      task gem => package(gem, '.gem') do
        sh "gem install #{package(gem, '.gem')}"
      end
    end

    desc "Build and install all of the gems as local gems"
    task :all => GEMS_AND_ROOT_DIRECTORIES.keys
  end

  namespace :release do
    GEMS_AND_ROOT_DIRECTORIES.each do |gem, directory|
      desc "Release #{gem} as a package"
      task gem => "package:#{gem}" do
        sh <<-SH
          gem install #{package(gem, '.gem')} --local &&
          gem push #{package(gem, '.gem')}
        SH
      end
    end

    desc "Commits the version to github repository"
    task :commit_version do
      %w[
        lib/sinatra
        sinatra-contrib/lib/sinatra/contrib
        rack-protection/lib/rack/protection
      ].each do |path|
        path = File.join(path, 'version.rb')
        File.write(path, File.read(path).sub(/VERSION = '(.+?)'/, "VERSION = '#{source_version}'"))
      end

      sh <<-SH
        git commit --allow-empty -a -m '#{source_version} release'  &&
        git tag -s v#{source_version} -m '#{source_version} release'  &&
        git push && (git push origin || true) &&
        git push --tags && (git push origin --tags || true)
      SH
    end

    desc "Release all gems as packages"
    task :all => [:test, :commit_version] + GEMS_AND_ROOT_DIRECTORIES.keys
  end
end