require "formula"

class Pyqt < Formula
  homepage "http://www.riverbankcomputing.co.uk/software/pyqt"
  url "https://downloads.sf.net/project/pyqt/PyQt4/PyQt-4.11.1/PyQt-mac-gpl-4.11.1.tar.gz"
  sha1 "9d7478758957c60ac5007144a0dc7f157f4a5836"

  depends_on :python => :recommended
  depends_on :python3 => :optional

  if build.without?("python3") && build.without?("python")
    odie "pyqt: --with-python3 must be specified when using --without-python"
  end

  depends_on 'qt'  # From their site: PyQt currently supports Qt v4 and will build against Qt v5

  if build.with? "python3"
    depends_on "sip" => "with-python3"
  else
    depends_on "sip"
  end

  def install
    # On Mavericks we want to target libc++, this requires a non default qt makespec
    if ENV.compiler == :clang and MacOS.version >= :mavericks
      ENV.append "QMAKESPEC", "unsupported/macx-clang-libc++"
    end

    Language::Python.each_python(build) do |python, version|
      ENV.append_path "PYTHONPATH", HOMEBREW_PREFIX/"opt/sip/lib/python#{version}/site-packages"

      args = ["--confirm-license",
              "--bindir=#{bin}",
              "--destdir=#{lib}/python#{version}/site-packages",
              "--sipdir=#{HOMEBREW_PREFIX}/share/sip"]

      # We need to run "configure.py" so that pyqtconfig.py is generated, which
      # is needed by QGIS, PyQWT (and many other PyQt interoperable
      # implementations such as the ROS GUI libs). This file is currently needed
      # for generating build files appropriate for the qmake spec that was used
      # to build Qt.  The alternatives provided by configure-ng.py is not
      # sufficient to replace pyqtconfig.py yet (see
      # https://github.com/qgis/QGIS/pull/1508). Using configure.py is
      # deprecated and will be removed with SIP v5, so we do the actual compile
      # using the newer configure-ng.py as recommended. In order not to
      # interfere with the build using configure-ng.py, we run configure.py in a
      # temporary directory and only retain the pyqtconfig.py from that.

      require "tmpdir"
      dir = Dir.mktmpdir
      begin
        cp_r(Dir.glob('*'), dir)
        cd dir do
          system python, "configure.py", *args
          (lib/"python#{version}/site-packages/PyQt4").install "pyqtconfig.py"
        end
      ensure
        remove_entry_secure dir
      end

      # On Mavericks we want to target libc++, this requires a non default qt makespec
      if ENV.compiler == :clang and MacOS.version >= :mavericks
        args << "--spec" << "unsupported/macx-clang-libc++"
      end

      system python, "configure-ng.py", *args
      system "make"
      system "make", "install"
      system "make", "clean"  # for when building against multiple Pythons
    end
  end

  def caveats
    "Phonon support is broken."
  end

  test do
    Pathname("test.py").write <<-EOS.undent
      import sys
      from PyQt4 import QtGui, QtCore

      class Test(QtGui.QWidget):
          def __init__(self, parent=None):
              QtGui.QWidget.__init__(self, parent)
              self.setGeometry(300, 300, 400, 150)
              self.setWindowTitle('Homebrew')
              QtGui.QLabel("Python " + "{0}.{1}.{2}".format(*sys.version_info[0:3]) +
                           " working with PyQt4. Quitting now...", self).move(50, 50)
              QtCore.QTimer.singleShot(1500, QtGui.qApp, QtCore.SLOT("quit()"))

      app = QtGui.QApplication([])
      window = Test()
      window.show()
      sys.exit(app.exec_())
    EOS

    Language::Python.each_python(build) do |python, version|
      system python, "test.py"
    end
  end
end