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# Copyright 2017  Lars Wirzenius
#
# 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/>.


import os
import string
import time


class LayoutBase(object):

    def __init__(self):
        self._settigs = None
        self._time = None

    def set_settings(self, settings):
        self._settings = settings

    def set_time_tuple(self, tuple):
        self._time = tuple

    def get_filename(self, title):
        return os.path.join(
            self._settings['source'],
            self._settings['notes-dir'],
            self.subdir(),
            self.basename(title))

    def subdir(self):
        raise NotImplementedError()

    def basename(self, title):
        raise NotImplementedError()


class PkbLayout(LayoutBase):
    
    def subdir(self):
        return time.strftime('%Y/%m/%d', self._time)

    def basename(self, title):
        basename = ''
        acceptable = set(string.ascii_letters + string.digits + '-_')
        for c in title.lower():
            if c in acceptable:
                basename += c
            elif not basename.endswith('_'):
                basename += '_'
        return basename.rstrip('_') or 'untitled'


class CtLayout(LayoutBase):

    def subdir(self):
        return '%d' % self.app.now_tuple.tm_year,

    def basename(self, title):
        return time.strftime('%Y-%m-%d-%H:%M:%S', self.app.now_tuple),