# -*- coding: utf-8; mode: ruby -*-
#
# Copyright (C) 2011-2012  Kouhei Sutou <kou@clear-code.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License version 2.1 as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

require 'pathname'

base_dir = Pathname.new(__FILE__).dirname

groonga_win32_x86_p = ENV["ARCHITECTURE"] == "x86"
groonga_version = ENV["VERSION"]
groonga_source = Pathname.new(ENV["SOURCE"]).expand_path
debug_build_p = ENV["DEBUG_BUILD"] == "yes"
debug_flags = ["CFLAGS=-ggdb3 -O0", "CXXFLAGS=-ggdb3 -O0"]

if groonga_win32_x86_p
  dist_dir = Pathname.new("dist-x86").expand_path
else
  dist_dir = Pathname.new("dist-x64").expand_path
end
license_dir = dist_dir + "share" + "license"
binary_dir = base_dir + dist_dir

patches_dir = (base_dir + "patches").expand_path
mecab_patches = [
  "mecab-0.98-not-use-locale-on-mingw.diff",
]
msgpack_patches = [
  "msgpack-0.5.7-mingw-w64.diff",
]
if groonga_win32_x86_p
  host = "i686-w64-mingw32"
else
  host = "x86_64-w64-mingw32"
  mecab_patches << "mecab-0.98-mingw-w64.diff"
end

namespace :build do
  download_dir = Pathname.new("tmp/download").expand_path

  desc "Build MessagePack and install it into #{dist_dir}."
  task(:msgpack) do
    tmp_dir = Pathname.new("tmp/msgpack")
    rm_rf(tmp_dir)
    mkdir_p(tmp_dir)
    require 'open-uri'
    msgpack_version = "0.5.7"
    msgpack_base = "msgpack-#{msgpack_version}"
    msgpack_tar_gz = "#{msgpack_base}.tar.gz"
    msgpack_tar_gz_url = "http://msgpack.org/releases/cpp/#{msgpack_tar_gz}"
    Dir.chdir(tmp_dir) do
      msgpack_tar_gz = download_dir + msgpack_tar_gz
      unless msgpack_tar_gz.exist?
        mkdir_p(download_dir)
        open(msgpack_tar_gz_url) do |downloaded_tar_gz|
          File.open(msgpack_tar_gz, "wb") do |tar_gz|
            tar_gz.print(downloaded_tar_gz.read)
          end
        end
      end
      sh("tar", "xzf", msgpack_tar_gz.to_s) or exit(false)
    end
    Dir.chdir(tmp_dir + msgpack_base) do
      msgpack_patches.each do |patch|
        sh("patch -p1 < #{patches_dir + patch}")
      end
      sh("autoreconf", "--install", "--force")
      sh("./configure",
         "--prefix=#{binary_dir}",
         "--host=#{host}") or exit(false)
      sh("env", "GREP_OPTIONS=--text", "nice", "make", "-j8") or exit(false)
      sh("env", "GREP_OPTIONS=--text", "make", "install") or exit(false)

      msgpack_license_dir = license_dir + "msgpack"
      mkdir_p(msgpack_license_dir)
      files = ["AUTHORS", "COPYING", "LICENSE"]
      cp(files, msgpack_license_dir)
    end
  end

  desc "Build MeCab and install it into #{dist_dir}."
  task(:mecab) do
    tmp_dir = Pathname.new("tmp/mecab")
    rm_rf(tmp_dir)
    mkdir_p(tmp_dir)
    require 'open-uri'
    mecab_version = "0.98"
    mecab_base = "mecab-#{mecab_version}"
    mecab_tar_gz = "#{mecab_base}.tar.gz"
    mecab_tar_gz_url = "http://mecab.googlecode.com/files/#{mecab_tar_gz}"
    Dir.chdir(tmp_dir) do
      mecab_tar_gz = download_dir + mecab_tar_gz
      unless mecab_tar_gz.exist?
        mkdir_p(download_dir)
        open(mecab_tar_gz_url) do |downloaded_tar_gz|
          File.open(mecab_tar_gz, "wb") do |tar_gz|
            tar_gz.print(downloaded_tar_gz.read)
          end
        end
      end
      sh("tar", "xzf", mecab_tar_gz.to_s) or exit(false)
    end
    Dir.chdir(tmp_dir + mecab_base) do
      mecab_patches.each do |patch|
        sh("patch -p1 < #{patches_dir + patch}")
      end
      sh("./configure",
         "--prefix=#{binary_dir}",
         "--host=#{host}") or exit(false)
      sh("env", "GREP_OPTIONS=--text", "nice", "make", "-j8") or exit(false)
      sh("env", "GREP_OPTIONS=--text", "make", "install") or exit(false)

      mecab_rc_path = binary_dir + "etc" + "mecabrc"
      win32_mecab_rc_path = binary_dir + "bin" + "mecabrc"
      mv(mecab_rc_path, win32_mecab_rc_path)

      mecab_license_dir = license_dir + "mecab"
      mkdir_p(mecab_license_dir)
      files = ["AUTHORS", "BSD", "COPYING", "GPL", "LGPL"]
      cp(files, mecab_license_dir)
    end
  end

  desc "Build MeCab dictionary and install it into #{dist_dir}."
  task(:mecab_dict) do
    tmp_dir = Pathname.new("tmp/mecab_dict")
    rm_rf(tmp_dir)
    mkdir_p(tmp_dir)
    require 'open-uri'
    naist_jdic_base = "mecab-naist-jdic-0.6.3-20100801"
    naist_jdic_tar_gz = "#{naist_jdic_base}.tar.gz"
    naist_jdic_tar_gz_url = "http://osdn.dl.sourceforge.jp/naist-jdic/48487/#{naist_jdic_tar_gz}"
    Dir.chdir(tmp_dir) do
      naist_jdic_tar_gz = download_dir + naist_jdic_tar_gz
      unless naist_jdic_tar_gz.exist?
        mkdir_p(download_dir)
        open(naist_jdic_tar_gz_url) do |downloaded_tar_gz|
          File.open(naist_jdic_tar_gz, "wb") do |tar_gz|
            tar_gz.print(downloaded_tar_gz.read)
          end
        end
      end
      sh("tar", "xzf", naist_jdic_tar_gz.to_s) or exit(false)
    end
    Dir.chdir(tmp_dir + naist_jdic_base) do
      sh("./configure",
         "--with-dicdir=#{binary_dir}/share/mecab/dic/naist-jdic",
         "--with-charset=utf-8") or exit(false)
      sh("make", "-j8") or exit(false)
      sh("make", "install-data") or exit(false)

      naist_jdic_license_dir = license_dir + "naist-jdic"
      mkdir_p(naist_jdic_license_dir)
      files = ["AUTHORS", "COPYING"]
      cp(files, naist_jdic_license_dir)
    end
    dictionary_dir = '$(rcpath)\..\share\mecab\dic\naist-jdic'
    mecab_rc_path = binary_dir + "bin" + "mecabrc"
    mecab_rc_content = mecab_rc_path.read
    File.open(mecab_rc_path, "w") do |mecab_rc|
      mecab_rc.print(mecab_rc_content.gsub(/^dicdir\s*=.+$/,
                                           "dicdir = #{dictionary_dir}"))
    end
  end

  desc "Build groonga and install it into #{dist_dir}/."
  task(:groonga) do
    tmp_dir = Pathname.new("tmp/groonga")
    rm_rf(tmp_dir)
    mkdir_p(tmp_dir)
    Dir.chdir(tmp_dir) do
      sh("tar", "xzf", groonga_source.to_s) or exit(false)
    end
    Dir.chdir(tmp_dir + "groonga-#{groonga_version}") do
      mecab_config = binary_dir + "bin" + "mecab-config"
      options = ["--prefix=#{binary_dir}",
                 "--host=#{host}",
                 "--without-cutter",
                 "--disable-benchmark",
                 "--disable-groonga-httpd",
                 "--with-message-pack=#{binary_dir}"]
      if mecab_config.exist?
        options << "--with-mecab-config=#{mecab_config}"
      else
        options << "--without-mecab"
      end
      options.concat(debug_flags) if debug_build_p
      sh("./configure", *options) or exit(false)
      sh("env", "GREP_OPTIONS=--text", "nice", "make", "-j8") or exit(false)
      sh("env", "GREP_OPTIONS=--text", "make", "install") or exit(false)

      groonga_license_dir = license_dir + "groonga"
      mkdir_p(groonga_license_dir)
      files = ["AUTHORS", "COPYING"]
      cp(files, groonga_license_dir)
    end
  end

  task(:clean) do
    rm_rf(dist_dir)
  end

  task(:pre => :clean)
  task(:post)
end

namespace :gcc do
  namespace :dll do
    desc "Bundle GCC related DLLs"
    task(:bundle) do
      dlls = ["libgcc_s_sjlj-1.dll", "libstdc++-6.dll", "libwinpthread-1.dll"]
      dlls.each do |dll|
        full_path = `#{host}-g++ -print-file-name=#{dll}`.strip
        cp(full_path, (binary_dir + "bin").to_s)
      end
    end
  end
end

task("build:post" => "gcc:dll:bundle")

desc "Build MeCab and groonga and install them into #{dist_dir}/."
task(:build => ["build:pre",
                "build:msgpack",
                "build:mecab",
                "build:mecab_dict",
                "build:groonga",
                "build:post"])
