Rakefile

require "fileutils"
require "tempfile"
require "bundler/gem_tasks"

begin
  require 'rspec/core/rake_task'
  RSpec::Core::RakeTask.new(:spec)
rescue LoadError
end

BINARY_FILES = [ "seven_zip_ruby/seven_zip_archive.so", "p7zip/bin/7z.so", "seven_zip_ruby/seven_zip_archive.bundle" ]
EXTENSIONS = [ "seven_zip_ruby", "p7zip" ]
MAKE = (ENV["MAKE"] || ENV["make"] || (RUBY_PLATFORM.include?("mswin") ? "nmake" : "make"))

task :build_platform => [ :pre_platform, :build, :post_platform ]

task :pre_platform do
  FileUtils.mv("seven_zip_ruby.gemspec", "seven_zip_ruby.gemspec.bak")

  versions = Dir.glob("lib/seven_zip_ruby/*").select{ |i| File.directory?(i) }.map{ |i| i.split("/").last }.sort_by{ |i| i.split(".").map(&:to_i) }
  min_version = versions.first + ".0"
  max_version = versions.last.split(".").first + "." + (versions.last.split(".").last.to_i + 1).to_s + ".0"
  gemspec = File.open("resources/seven_zip_ruby.gemspec.platform", "r", &:read)
    .gsub("SPEC_REQUIRED_RUBY_VERSION"){ "spec.required_ruby_version = [ '>= #{min_version}', '< #{max_version}' ]" }
  File.open("seven_zip_ruby.gemspec", "w") do |f|
    f.write(gemspec)
  end
end

task :post_platform do
  FileUtils.mv("seven_zip_ruby.gemspec.bak", "seven_zip_ruby.gemspec")
end


task :build_local_all => [ :clean_local, :build_local ]
task :build_local => [ :build_binary, :copy_binary ]

task :clean_local do
  EXTENSIONS.each do |ext|
    Dir.chdir "ext/#{ext}" do
      sh("#{MAKE} clean") if (File.exist?("Makefile"))
    end
  end

  FileUtils.rm_f(BINARY_FILES.map{ |i| "ext/#{i}" })
end

task :build_binary do
  FileUtils.cp "ext/p7zip/makefile","ext/p7zip/makefile.old"
  EXTENSIONS.each do |ext|
    Dir.chdir "ext/#{ext}" do
      FileUtils.rm_f(BINARY_FILES.map{ |i| "ext/#{i}" })

      Tempfile.open([ "site", ".rb" ], Dir.pwd) do |temp|
        temp.puts <<"EOS"
require('rbconfig')
RbConfig::CONFIG['sitearchdir'] = "../../lib"
EOS
        temp.flush

        sh "ruby -r#{File.expand_path(temp.path)} extconf.rb"
        temp.unlink
      end
      sh "#{MAKE}"
    end
  end
  FileUtils.rm_f "ext/p7zip/Makefile"
  FileUtils.mv "ext/p7zip/makefile.old","ext/p7zip/makefile"
end

task :copy_binary do
  BINARY_FILES.each do |file|
    dest = File.join("lib", "seven_zip_ruby", File.basename(file))
    FileUtils.rmtree(dest) if (File.exist?(dest))

    src = File.join("ext", file)
    FileUtils.cp(src, dest) if (File.exist?(src))
  end
end

task default: %i[build_local spec]