import os

#-----------------------------------------------------------------------------

## @package mlx.common
#
# Common definitions to be used by both the GUI and possible other parts
#
# The main purpose of this module is to import Gtk+2 or 3 and related modules
# and provide common names for them. There is a similator module in the GUI
# part (\ref mlx.gui.common), which contains the GUI-specific names. This one
# contains only what is used by other modules as well.
# The variable \c pygobject tells which version of Gtk is being used. If it is
# \c True, Gtk+ 3 is used via the PyGObject interface. Otherwise Gtk+ 2 is
# used, which is the default on Windows or when the \c FORCE_PYGTK environment
# variable is set.

#---------------------------------------------------------------------------------------

MAVA_BASE_URL = os.environ.get("MAVA_BASE_URL", "http://virtualairlines.hu")

#-------------------------------------------------------------------------------

if "FORCE_PYGTK" in os.environ:
    print("Using PyGTK")
    pygobject = False
    import gobject
else:
    print("Using PyGObject")
    pygobject = True

    from gi.repository import GObject as gobject

#-------------------------------------------------------------------------------

def fixUnpickledValue(value):
    """Fix the given unpickled value.

    It handles some basic data, like scalars, lists and tuples. If it
    encounters byte arrays, they are decoded as 'utf-8' strings."""
    if isinstance(value, bytes):
        return str(value, "utf-8")
    elif isinstance(value, list):
        return [fixUnpickledValue(v) for v in value]
    elif isinstance(value, tuple):
        return tuple([fixUnpickledValue(v) for v in value])
    else:
        return value

#-------------------------------------------------------------------------------

def fixUnpickled(state):
    """Fix the given unpickled state.

    It checks keys and values, and if it encounters any byte arrays, they are
    decoded with the encoding 'utf-8'. It returns a new dictionary.
    """
    newDict = {}
    for (key, value) in iter(state.items()):
        newDict[fixUnpickledValue(key)] = fixUnpickledValue(value)

    return newDict