require "mini_portile2"
require "pathname"

module LibarchiveBinary
  def self.windows?
    RbConfig::CONFIG["target_os"] =~ /mingw32|mswin/
  end

  # inspired by https://github.com/sparklemotion/nokogiri/blob/35823bd/ext/nokogiri/extconf.rb#L655
  class ZLibRecipe < MiniPortile
    ROOT = Pathname.new(File.expand_path("../..", __dir__))

    def initialize
      super("zlib", "1.2.11")

      @files << {
        url: "http://zlib.net/fossils/zlib-1.2.11.tar.gz",
        sha256: "c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1"
      }

      @target = ROOT.join(@target).to_s
    end

    def configure_defaults
      [
        "--static"
      ]
    end

    def configure
      if LibarchiveBinary::windows?
        Dir.chdir(work_path) do
          mk = File.read("win32/Makefile.gcc")
          File.open("win32/Makefile.gcc", "wb") do |f|
            f.puts "BINARY_PATH = #{path}/bin"
            f.puts "LIBRARY_PATH = #{path}/lib"
            f.puts "INCLUDE_PATH = #{path}/include"
            f.puts "SHARED_MODE = 0"
            f.puts "LOC = -fPIC"
            f.puts mk
          end
        end
      else
        cmd = ["env", "CFLAGS=-fPIC", "LDFLAGS=-fPIC", "./configure"] + computed_options
        execute("configure", cmd)
      end
    end

    def configured?
      if LibarchiveBinary::windows?
        Dir.chdir(work_path) do
          !!(File.read("win32/Makefile.gcc") =~ /^BINARY_PATH/)
        end
      else
        super
      end
    end

    def compile
      if LibarchiveBinary::windows?
        execute("compile", "make -f win32/Makefile.gcc libz.a")
      else
        super
      end
    end

    def install
      if LibarchiveBinary::windows?
        execute("install", "make -f win32/Makefile.gcc install")
      else
        super
      end
    end

    def checkpoint
      File.join(@target, "#{self.name}-#{self.version}-#{self.host}.installed")
    end

    def cook_if_not
      cook unless File.exist?(checkpoint)
    end

    def cook
      super

      FileUtils.touch(checkpoint)
    end
  end
end