Rakefile

# frozen_string_literal: true

SWIFTGEN_VERSION = '6.1.0'

require 'fileutils'
require 'tmpdir'
require 'rake/clean'
PROJECT_DIR = __dir__

task default: %w[gen]

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

namespace :dependencies do
  task check: %w[gen:check]

  namespace :gen do
    desc 'Install SwiftGen if needed'
    task :check do
      if swiftgen_needs_install
        dependency_failed('SwiftGen')
        Rake::Task['dependencies:gen:install'].invoke
      end
    end

    desc 'Install SwiftGen'
    task :install do
      puts "Installing SwiftGen #{SWIFTGEN_VERSION} into #{swiftgen_path}"
      Dir.mktmpdir do |tmpdir|
        zipfile = "#{tmpdir}/swiftgen-#{SWIFTGEN_VERSION}.zip"
        source = "https://github.com/SwiftGen/SwiftGen/releases/download/#{SWIFTGEN_VERSION}/swiftgen-#{SWIFTGEN_VERSION}.zip"
        sh "curl --fail --location -o #{zipfile} #{source} || true"
        if File.exist?(zipfile)
          zipdir = "#{tmpdir}/swiftgen-#{SWIFTGEN_VERSION}"
          sh "unzip -q #{zipfile} -d #{zipdir}"
          Dir.chdir(zipdir) do
            puts "Copying SwiftGen #{SWIFTGEN_VERSION} into #{swiftgen_path}"
            FileUtils.rm_f(swiftgen_path)
            FileUtils.mkdir_p(swiftgen_path.to_s)
            FileUtils.cp_r("#{zipdir}/lib", swiftgen_path.to_s)
            FileUtils.cp_r("#{zipdir}/bin", swiftgen_path.to_s)
          end
        end
      end
    end
    CLOBBER << 'vendor/swiftgen'
  end
end

CLOBBER << 'vendor'

desc 'Regenerates the master Gridicon enum from PDF assets'
task gen: %w[dependencies:gen:check] do
  swiftgen %w[xcassets -p Gridicons.stencil Sources/Gridicons/Resources/Gridicons.xcassets]
  puts 'Done!'
end

def swiftgen_path
  "#{PROJECT_DIR}/vendor/swiftgen"
end

def swiftgen(args)
  args = [swiftgen_bin] + args
  sh("#{args.join(' ')} > Sources/Gridicons/GridiconsGenerated.swift")
end

def swiftgen_bin
  "#{swiftgen_path}/bin/swiftgen"
end

def swiftgen_needs_install
  return true unless File.exist?(swiftgen_bin)

  installed_version = `"#{swiftgen_bin}" --version | awk '{print $2}'`.chomp
  installed_version.slice!(0)
  (installed_version != SWIFTGEN_VERSION)
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  msg = "#{component} dependencies missing or outdated.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