#!/usr/bin/env python
# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4

###############################################################################
# OpenLP - Open Source Lyrics Projection                                      #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2011 Raoul Snyman                                        #
# Portions copyright (c) 2008-2011 Tim Bentley, Gerald Britton, Jonathan      #
# Corwin, Michael Gorven, Scott Guerrieri, Matthias Hub, Meinert Jordan,      #
# Armin Köhler, Joshua Millar, Stevan Pettit, Andreas Preikschat, Mattias     #
# Põldaru, Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith,    #
# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Frode Woldsund             #
# --------------------------------------------------------------------------- #
# 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; version 2 of the License.                              #
#                                                                             #
# 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, write to the Free Software Foundation, Inc., 59  #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
###############################################################################

"""
Configuration file for pytest framework.
"""

import os
import sys
import subprocess
import logging
import random
import string

import py.path
from PyQt4 import QtCore
from sqlalchemy.orm import clear_mappers

from openlp.core import main as openlp_main
from openlp.core.lib.db import Manager
from openlp.plugins.songs.lib.db import init_schema

TESTS_PATH = os.path.dirname(os.path.abspath(__file__))

RESOURCES_PATH = os.path.join(TESTS_PATH, 'resources')
SONGS_PATH = os.path.join(RESOURCES_PATH, 'songs')

# set up logging to stderr (console)
_handler = logging.StreamHandler(stream=None)
_handler.setFormatter(logging.Formatter(
    u'%(asctime)s %(name)-55s %(levelname)-8s %(message)s'))
logging.addLevelName(15, u'Timer')
log = logging.getLogger()
log.addHandler(_handler)
log.setLevel(logging.DEBUG)


# Paths with resources for tests
def pytest_funcarg__pth(request):
    def setup():
        class Pth(object):
            def __init__(self):
                self.tests = py.path.local(TESTS_PATH)
                self.resources = py.path.local(RESOURCES_PATH)
                self.songs = py.path.local(SONGS_PATH)
        return Pth()
    return request.cached_setup(setup=setup, scope='module')


# Test function argument to make openlp gui instance persistent for all tests.
# Test cases in module have to access the same instance. To allow creating
# multiple
# instances it would be necessary use diffrent configuraion and data files.
# Created instance will use your OpenLP settings.
def pytest_funcarg__openlpapp(request):
    def setup():
        return openlp_main(['--testing'])
    def teardown(app):
        # sqlalchemy allows to map classess to only one database at a time
        clear_mappers()
    return request.cached_setup(setup=setup, teardown=teardown, scope='module')


def _get_unique_qsettings():
    # unique QSettings group
    unique = ''.join(random.choice(string.letters + string.digits)
        for i in range(8))
    group_name = 'test_%s' % unique
    settings = QtCore.QSettings()
    settings.beginGroup(group_name)
    settings.setValue(u'db type', QtCore.QVariant(u'sqlite'))
    settings.endGroup()
    return group_name


# Test function argument giving access to empty song database.
def pytest_funcarg__empty_songs_db(request):
    def setup():
        tmpdir = request.getfuncargvalue('tmpdir')
        db_file_path = tmpdir.join('songs.sqlite')
        plugin_name = _get_unique_qsettings()
        manager = Manager(plugin_name, init_schema,
            db_file_path=db_file_path.strpath)
        return manager
    def teardown(manager):
        # sqlalchemy allows to map classess to only one database at a time
        clear_mappers()
    return request.cached_setup(setup=setup, teardown=teardown, scope='function')


# Test function argument giving access to song database.
def pytest_funcarg__songs_db(request):
    def setup():
        tmpdir = request.getfuncargvalue('tmpdir')
        db_file_path = tmpdir.join('songs.sqlite')
        # copy test data to tmpdir
        orig_db = py.path.local(SONGS_PATH).join('songs.sqlite')
        orig_db.copy(db_file_path)
        plugin_name = _get_unique_qsettings()
        manager = Manager(plugin_name, init_schema,
            db_file_path=db_file_path.strpath)
        return manager
    def teardown(manager):
        # sqlalchemy allows to map classess to only one database at a time
        clear_mappers()
    return request.cached_setup(setup=setup, teardown=teardown, scope='function')


class OpenLyricsValidator(object):
    """Validate xml if it conformns to OpenLyrics xml schema."""
    def __init__(self, script, schema):
            self.cmd = [sys.executable, script, schema]

    def validate(self, file_path):
        self.cmd.append(file_path)
        print self.cmd
        retcode = subprocess.call(self.cmd)
        if retcode == 0:
            # xml conforms to schema
            return True
        else:
            # xml has invalid syntax
            return False


# Test function argument giving access to song database.
def pytest_funcarg__openlyrics_validator(request):
    def setup():
        script = os.path.join(RESOURCES_PATH, 'openlyrics', 'validate.py')
        schema = os.path.join(RESOURCES_PATH, 'openlyrics',
            'openlyrics_schema.rng')
        return OpenLyricsValidator(script, schema)
    return request.cached_setup(setup=setup, scope='session')