Rakefile

# frozen_string_literal: true

require 'English'
require 'fileutils'
require 'tmpdir'
require 'rake/clean'
require 'yaml'
require 'digest'

# Constants
PROJECT_DIR = __dir__
XCODE_PROJECT = 'Simplenote.xcodeproj'
LOCAL_PATH = 'vendor/bundle'

desc 'Checks the source for style errors'
task :lint do
  swiftlint
end

namespace :lint do
  desc 'Automatically corrects style errors where possible'
  task :autocorrect do
    swiftlint(additional_args: ['--fix'])
  end
end

desc 'Install required dependencies'
task dependencies: %w[dependencies:check]

namespace :dependencies do
  task check: %w[bundler:check bundle:check credentials:apply]

  namespace :bundler do
    task :check do
      Rake::Task['dependencies:bundler:install'].invoke unless command?('bundler')
    end

    task :install do
      puts 'Bundler not found in PATH, installing to vendor'
      ENV['GEM_HOME'] = File.join(PROJECT_DIR, 'vendor', 'gems')
      ENV['PATH'] = File.join(PROJECT_DIR, 'vendor', 'gems', 'bin') + ":#{ENV.fetch('PATH', nil)}"
      sh 'gem install bundler' unless command?('bundler')
    end
    CLOBBER << 'vendor/gems'
  end

  namespace :bundle do
    task :check do
      sh "bundle config set --local path #{LOCAL_PATH} > /dev/null", verbose: false
      sh 'bundle check > /dev/null', verbose: false do |ok, _res|
        next if ok

        # bundle check exits with a non zero code if install is needed
        dependency_failed('Bundler')
        Rake::Task['dependencies:bundle:install'].invoke
      end
    end

    task :install do
      fold('install.bundler') do
        sh 'bundle install --jobs=3 --retry=3'
      end
    end
    CLOBBER << 'vendor/bundle'
    CLOBBER << '.bundle'
  end

  namespace :credentials do
    task :apply do
      next unless Dir.exist?(File.join(Dir.home, '.mobile-secrets/.git')) || ENV.key?('CONFIGURE_ENCRYPTION_KEY')

      sh('FASTLANE_SKIP_UPDATE_CHECK=1 FASTLANE_ENV_PRINTER=1 bundle exec fastlane run configure_apply force:true')
    end
  end
end

CLOBBER << 'vendor'

namespace :git do
  hooks = %w[post-checkout post-merge]

  desc 'Install git hooks'
  task :install_hooks do
    hooks.each do |hook|
      target = hook_target(hook)
      source = hook_source(hook)
      backup = hook_backup(hook)

      next if File.symlink?(target) && (File.readlink(target) == source)
      next if File.file?(target) && File.identical?(target, source)

      if File.exist?(target)
        puts "Existing hook for #{hook}. Creating backup at #{target} -> #{backup}"
        FileUtils.mv(target, backup, force: true)
      end
      FileUtils.ln_s(source, target)
      puts "Installed #{hook} hook"
    end
  end

  desc 'Uninstall git hooks'
  task :uninstall_hooks do
    hooks.each do |hook|
      target = hook_target(hook)
      source = hook_source(hook)
      backup = hook_backup(hook)

      next unless File.symlink?(target) && (File.readlink(target) == source)

      puts "Removing hook for #{hook}"
      File.unlink(target)
      if File.exist?(backup)
        puts "Restoring hook for #{hook} from backup"
        FileUtils.mv(backup, target)
      end
    end
  end

  def hook_target(hook)
    ".git/hooks/#{hook}"
  end

  def hook_source(hook)
    "../../Scripts/hooks/#{hook}"
  end

  def hook_backup(hook)
    "#{hook_target(hook)}.bak"
  end
end

namespace :git do
  task :post_merge do
    check_dependencies_hook
  end

  task :post_checkout do
    check_dependencies_hook
  end
end

desc 'Open the project in Xcode'
task xcode: [:dependencies] do
  sh "open #{XCODE_PROJECT}"
end

def fold(label)
  puts "--- #{label}" if ENV['BUILDKITE']
  yield
end

def command?(command)
  system("which #{command} > /dev/null 2>&1")
end

def dependency_failed(component)
  msg = "#{component} dependencies missing or outdated. "
  if ENV['DRY_RUN']
    msg += 'Run rake dependencies to install them.'
    raise msg
  else
    msg += 'Installing...'
    puts msg
  end
end

def check_dependencies_hook
  ENV['DRY_RUN'] = '1'
  begin
    Rake::Task['dependencies'].invoke
  rescue StandardError => e
    puts e.message
    exit 1
  end
end

def swiftlint(additional_args: [])
  run_package_plugin(cmd: "swiftlint --working-directory .. --quiet #{additional_args.join(' ')}")
end

def run_package_plugin(cmd:)
  run_in_build_tools(cmd: "swift package plugin --allow-writing-to-directory .. --allow-writing-to-package-directory #{cmd}")
end

# We could use more idiomatic Ruby here, with `Dir.chdir`, but leaving as raw shell commands for when we'll drop Ruby and rake for tooling.
def run_in_build_tools(cmd:)
  sh "pushd BuildTools && export SDKROOT=$(xcrun --sdk macosx --show-sdk-path) && #{cmd} && popd"
end