"""
    Copyright (C) 2011-2015  Parametric Products Intellectual Holdings, LLC

    This file is part of CadQuery.

    CadQuery is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    CadQuery 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, see <http://www.gnu.org/licenses/>
"""
import os, sys


def _fc_path():
    """Find FreeCAD"""
    _PATH = ""
    if _PATH:
        return _PATH

    #look for FREECAD_LIB env variable
    if os.environ.has_key('FREECAD_LIB'):
        _PATH = os.environ.get('FREECAD_LIB')
        if os.path.exists( _PATH):
            return _PATH

    if sys.platform.startswith('linux'):
        #Make some dangerous assumptions...
        for _PATH in [
                os.path.join(os.path.expanduser("~"), "lib/freecad/lib"),
                "/usr/local/lib/freecad/lib",
                "/usr/lib/freecad/lib",
                "/opt/freecad/lib/",
                "/usr/bin/freecad/lib",
                "/usr/lib/freecad",
                ]:
            if os.path.exists(_PATH):
                return _PATH

    elif sys.platform.startswith('win'):
        #try all the usual suspects
        for _PATH in [
                "c:/Program Files/FreeCAD0.12/bin",
                "c:/Program Files/FreeCAD0.13/bin",
                "c:/Program Files/FreeCAD0.14/bin",
                "c:/Program Files/FreeCAD0.15/bin",
                "c:/Program Files/FreeCAD0.16/bin",
                "c:/Program Files/FreeCAD0.17/bin",
                "c:/Program Files (x86)/FreeCAD0.12/bin",
                "c:/Program Files (x86)/FreeCAD0.13/bin",
                "c:/Program Files (x86)/FreeCAD0.14/bin",
                "c:/Program Files (x86)/FreeCAD0.15/bin",
                "c:/Program Files (x86)/FreeCAD0.16/bin",
                "c:/Program Files (x86)/FreeCAD0.17/bin",
                "c:/apps/FreeCAD0.12/bin",
                "c:/apps/FreeCAD0.13/bin",
                "c:/apps/FreeCAD0.14/bin",
                "c:/apps/FreeCAD0.15/bin",
                "c:/apps/FreeCAD0.16/bin",
                "c:/apps/FreeCAD0.17/bin",
                "c:/Program Files/FreeCAD 0.12/bin",
                "c:/Program Files/FreeCAD 0.13/bin",
                "c:/Program Files/FreeCAD 0.14/bin",
                "c:/Program Files/FreeCAD 0.15/bin",
                "c:/Program Files/FreeCAD 0.16/bin",
                "c:/Program Files/FreeCAD 0.17/bin",
                "c:/Program Files (x86)/FreeCAD 0.12/bin",
                "c:/Program Files (x86)/FreeCAD 0.13/bin",
                "c:/Program Files (x86)/FreeCAD 0.14/bin",
                "c:/Program Files (x86)/FreeCAD 0.15/bin",
                "c:/Program Files (x86)/FreeCAD 0.16/bin",
                "c:/Program Files (x86)/FreeCAD 0.17/bin",
                "c:/apps/FreeCAD 0.12/bin",
                "c:/apps/FreeCAD 0.13/bin",
                "c:/apps/FreeCAD 0.14/bin",
                "c:/apps/FreeCAD 0.15/bin",
                "c:/apps/FreeCAD 0.16/bin",
                "c:/apps/FreeCAD 0.17/bin",
                ]:
            if os.path.exists(_PATH):
                return _PATH
    elif sys.platform.startswith('darwin'):
        #Assume we're dealing with a Mac
        for _PATH in [
                "/Applications/FreeCAD.app/Contents/lib",
                os.path.join(os.path.expanduser("~"), "Library/Application Support/FreeCAD/lib"),
                ]:
            if os.path.exists(_PATH):
                return _PATH



#Make sure that the correct FreeCAD path shows up in Python's system path
no_library_path = ImportError('cadquery was unable to determine freecads library path')
try:
    import FreeCAD
except ImportError:
    path = _fc_path()
    if path:
        sys.path.insert(0, path)
        try:
            import FreeCAD
        except ImportError:
            raise no_library_path
    else: raise no_library_path