# frozen_string_literal: true

require 'fileutils'
require 'rake/clean'

WARNING = <<~WARN
  WARNING: you may not have wget installed, you could just download
  the correct version of jruby-complete to the vendors folder, and
  re-run k9 setup install instead of installing wget. Some systems
  may also require 'sudo' access to install, NB: this is untested....

WARN
# https://github.com/processing/processing-video/releases/download/r6-v2.0-beta4/video-2.0-beta4.zip
JRUBYC_VERSION = '9.2.9.0'
SOUND = 'sound.zip'
SOUND_VERSION = 'v2.2.2'
VIDEO = 'video-2.0-beta4.zip'
VIDEO_VERSION = 'r6-v2.0-beta4'
EXAMPLES = '3.5'
HOME_DIR = ENV['HOME']
MAC_OR_LINUX = /linux|mac|darwin/ =~ RbConfig::CONFIG['host_os']

CLOBBER << "jruby-complete-#{JRUBYC_VERSION}.jar"
CLOBBER << "jruby-complete-#{JRUBYC_VERSION}.jar.sha256"

desc 'dependency check'
task :wget_check do
  WGET ||= `which wget`
  warn WARNING unless WGET
end

file "jruby-complete-#{JRUBYC_VERSION}.jar.sha256" do
  system "wget https://repo1.maven.org/maven2/org/jruby/jruby-complete/#{JRUBYC_VERSION}/jruby-complete-#{JRUBYC_VERSION}.jar.sha256"
end

file "jruby-complete-#{JRUBYC_VERSION}.jar" do
  begin
    system "wget https://repo1.maven.org/maven2/org/jruby/jruby-complete/#{JRUBYC_VERSION}/jruby-complete-#{JRUBYC_VERSION}.jar"
  rescue NameError
    warn(WARNING)
  end
  value = File.read("jruby-complete-#{JRUBYC_VERSION}.jar.sha256")
  check_sha256("jruby-complete-#{JRUBYC_VERSION}.jar", value)
end

desc 'get sha256'
task get_sha256: ['wget_check', "jruby-complete-#{JRUBYC_VERSION}.jar.sha256"]

desc 'download, and copy to jruby_art'
task default: %i[wget_check download copy_ruby install_samples]

desc 'download JRuby upstream sources'
task download: ['get_sha256', "jruby-complete-#{JRUBYC_VERSION}.jar"]

directory '../lib/ruby'

desc 'copy jruby-complete'
task copy_ruby: ['../lib/ruby'] do
  FileUtils.cp(
    "jruby-complete-#{JRUBYC_VERSION}.jar", '../lib/ruby/jruby-complete.jar'
  )
end

def check_sha256(filename, expected_hash)
  require 'digest'
  sha256 = Digest::SHA256.new
  File.open(filename, 'r') do |f|
    while (buf = f.read(4096))
      sha256.update(buf)
    end
  end
  return if sha256.hexdigest == expected_hash

  raise "bad sha256 checksum for #{filename} (expected #{expected_hash} got #{sha256.hexdigest})"
end

desc 'initialize ~/.jruby_art directories'
task :init_dir do
  unless File.exist? "#{HOME_DIR}/.jruby_art/libraries"
    FileUtils.mkdir_p "#{HOME_DIR}/.jruby_art/libraries"
  end
end

desc 'download and copy sound library to ~/.jruby_art'
task download_and_copy_sound: %i[wget_check init_dir download_sound copy_sound clobber]

desc 'download and copy video library to ~/.jruby_art'
task download_and_copy_video: %i[wget_check init_dir download_video copy_video clobber]

desc 'download sound library'
task :download_sound do
  wget_base = 'wget https://github.com/processing/processing-sound'
  wget_string = [wget_base, 'releases/download/latest', SOUND].join('/')
  puts wget_string
  system wget_string
end

desc 'download video library'
task :download_video do
  wget_base = 'wget https://github.com/processing/processing-video'
  wget_string = [wget_base, 'releases/download', VIDEO_VERSION, VIDEO].join('/')
  system wget_string
end

desc 'copy sound library'
task copy_sound: SOUND do
  system "unzip #{SOUND}"
  FileUtils.rm_r "#{HOME_DIR}/.picrate/libraries/sound" if File.exist? "#{HOME_DIR}/.jruby_art/libraries/sound"
  FileUtils.cp_r 'sound', "#{HOME_DIR}/.jruby_art/libraries"
  FileUtils.rm_r 'sound'
end

desc 'copy video library'
task copy_video: VIDEO do
  system "unzip #{VIDEO}"
  FileUtils.rm_r "#{HOME_DIR}/.picrate/libraries/video" if File.exist? "#{HOME_DIR}/.jruby_art/libraries/video"
  FileUtils.cp_r 'video', "#{HOME_DIR}/.jruby_art/libraries/video"
  FileUtils.rm_r 'video'
end

desc 'download, and copy to jruby_art'
task install_samples: %i[download_examples copy_examples]

desc 'download and copy examples to user home'
task :download_examples
file_name = MAC_OR_LINUX.nil? ? "#{EXAMPLES}.zip" : "#{EXAMPLES}.tar.gz"
file file_name do
  if MAC_OR_LINUX.nil?
    system "wget https://github.com/ruby-processing/JRubyArt-examples/archive/#{EXAMPLES}.zip"
  else
    system "wget https://github.com/ruby-processing/JRubyArt-examples/archive/#{EXAMPLES}.tar.gz"
  end
end

desc 'copy examples'
task copy_examples: file_name do
  if MAC_OR_LINUX.nil?
    system  "unzip #{EXAMPLES}.zip"
  else
    system  "tar xzvf #{EXAMPLES}.tar.gz"
  end
  FileUtils.rm_r("#{HOME_DIR}/k9_samples") if File.exist? "#{HOME_DIR}/k9_samples"
  FileUtils.cp_r("JRubyArt-examples-#{EXAMPLES}", "#{HOME_DIR}/k9_samples")
  FileUtils.rm_r("JRubyArt-examples-#{EXAMPLES}")
end