# High level interface to the isofs library.

import core
import defines
import os.path

def _wrap_volume_property(var_name, core_setter):
    def get(self):
        return getattr(self, var_name)
    def set(self, value):
        setattr(self, var_name, value)
        core_setter(self._volume, value)
    return property(get, set)

class IsoFS(object):
    def __init__(self, volume_id='', publisher_id='',
                 data_preparer_id=''):
        self._volume_id = volume_id
        self._publisher_id = publisher_id
        self._data_preparer_id = data_preparer_id

        self._volume = core.iso_volume_new(
            volume_id, publisher_id, data_preparer_id)
        self._volset = core.iso_volset_new(self._volume, volume_id)

    def __del__(self):
        core.iso_volume_free(self._volume)
        core.iso_volset_free(self._volset)

    volume_id = _wrap_volume_property(
        '_volume_id', core.iso_volume_set_volume_id)
    publisher_id = _wrap_volume_property(
        '_publisher_id', core.iso_volume_set_publisher_id)
    data_preparer_id = _wrap_volume_property(
        '_data_preparer_id', core.iso_volume_set_data_preparer_id)

    def add(self, disc_path, path, exclude=None): #, make_parents=False):
        disc_path = os.path.normpath(disc_path)
        path = os.path.abspath(os.path.normpath(path))
        exclude = exclude or []

        # Does the disc parent exist?
        disc_parent, _ = os.path.split(disc_path)
        if not core.iso_tree_volume_path_to_node(self._volume, disc_parent):
            print "No such parent"
            return # TODO: Raise exception and/or create all missing
                   #       parents.

        # Flush all ignores that may have stayed over.
        core.iso_exclude_empty()
        for exclude_path in exclude:
            core.iso_exclude_add_path(exclude_path)

        core.iso_tree_volume_add_path(self._volume, disc_path, path)

    def display(self):
        root = core.iso_volume_get_root(self._volume)
        core.iso_tree_print(root, 0)