# -*- coding: utf-8 -*-
#
#  Copyright (C) 2015 by Igor E. Novikov
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program 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 General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

from uc2.formats.gpl.gpl_const import GPL_HEADER
from uc2.formats.gpl.gpl_presenter import GPL_Presenter
from uc2.formats.sk2.sk2_presenter import SK2_Presenter
from uc2.formats.skp.skp_presenter import SKP_Presenter
from uc2.utils.fsutils import get_fileptr
from uc2.utils.mixutils import merge_cnf


def gpl_loader(appdata, filename=None, fileptr=None, translate=True,
               convert=False, cnf=None, **kw):
    cnf = merge_cnf(cnf, kw)
    doc = GPL_Presenter(appdata, cnf)
    doc.load(filename, fileptr)
    if convert:
        skp_doc = SKP_Presenter(appdata, cnf)
        doc.convert_to_skp(skp_doc)
        doc.close()
        return skp_doc
    if translate:
        skp_doc = SKP_Presenter(appdata, cnf)
        doc.convert_to_skp(skp_doc)
        sk2_doc = SK2_Presenter(appdata, cnf)
        skp_doc.translate_to_sk2(sk2_doc)
        doc.close()
        skp_doc.close()
        return sk2_doc
    return doc


def gpl_saver(doc, filename=None, fileptr=None, translate=True,
              convert=False, cnf=None, **kw):
    cnf = merge_cnf(cnf, kw)
    appdata = doc.appdata
    if translate:
        skp_doc = SKP_Presenter(appdata, cnf)
        skp_doc.translate_from_sk2(doc)
        gpl_doc = GPL_Presenter(appdata, cnf)
        gpl_doc.convert_from_skp(skp_doc)
        gpl_doc.save(filename, fileptr)
        gpl_doc.close()
        skp_doc.close()
    elif convert:
        gpl_doc = GPL_Presenter(appdata, cnf)
        gpl_doc.convert_from_skp(doc)
        gpl_doc.save(filename, fileptr)
        gpl_doc.close()
    else:
        doc.save(filename, fileptr)


def check_gpl(path):
    fileptr = get_fileptr(path)
    string = fileptr.read(len(GPL_HEADER))
    fileptr.close()
    return string == GPL_HEADER
