#!/usr/bin/env python
# coding: utf-8
#
# This file is part of Supysonic.
# Supysonic is a Python implementation of the Subsonic server API.
#
# Copyright (C) 2017-2018 Alban 'spl0k' Féron
#                    2017 Óscar García Amor
#
# Distributed under terms of the GNU AGPLv3 license.

from supysonic import db
from supysonic.managers.user import UserManager
from supysonic.py23 import strtype

import io
import unittest
import uuid

from pony.orm import commit
from pony.orm import ObjectNotFound

db_session = db.db_session

class UserManagerTestCase(unittest.TestCase):
    def setUp(self):
        # Create an empty sqlite database in memory
        db.init_database('sqlite:', True)

    def tearDown(self):
        db.release_database()

    @db_session
    def create_data(self):
        # Create some users
        self.assertIsInstance(UserManager.add('alice', 'ALICE', 'test@example.com', True), db.User)
        self.assertIsInstance(UserManager.add('bob', 'BOB', 'bob@example.com', False), db.User)
        self.assertIsInstance(UserManager.add('charlie', 'CHARLIE', 'charlie@example.com', False), db.User)

        folder = db.Folder(name = 'Root', path = 'tests/assets', root = True)
        artist = db.Artist(name = 'Artist')
        album = db.Album(name = 'Album', artist = artist)
        track = db.Track(
            title = 'Track',
            disc = 1,
            number = 1,
            duration = 1,
            artist = artist,
            album = album,
            path = 'tests/assets/empty',
            folder = folder,
            root_folder = folder,
            content_type = 'audio/mpeg',
            bitrate = 320,
            last_modification = 0
        )

        playlist = db.Playlist(
            name = 'Playlist',
            user = db.User.get(name = 'alice')
        )
        playlist.add(track)

    def test_encrypt_password(self):
        func = UserManager._UserManager__encrypt_password
        self.assertEqual(func('password','salt'), ('59b3e8d637cf97edbe2384cf59cb7453dfe30789', 'salt'))
        self.assertEqual(func('pass-word','pepper'), ('d68c95a91ed7773aa57c7c044d2309a5bf1da2e7', 'pepper'))
        self.assertEqual(func(u'éèàïô', 'ABC+'), ('b639ba5217b89c906019d89d5816b407d8730898', 'ABC+'))

    @db_session
    def test_get_user(self):
        self.create_data()

        # Get existing users
        for name in ['alice', 'bob', 'charlie']:
            user = db.User.get(name = name)
            self.assertEqual(UserManager.get(user.id), user)

        # Get with invalid UUID
        self.assertRaises(ValueError, UserManager.get, 'invalid-uuid')
        self.assertRaises(ValueError, UserManager.get, 0xfee1bad)

        # Non-existent user
        self.assertRaises(ObjectNotFound, UserManager.get, uuid.uuid4())

    @db_session
    def test_add_user(self):
        self.create_data()
        self.assertEqual(db.User.select().count(), 3)

        # Create duplicate
        self.assertRaises(ValueError, UserManager.add, 'alice', 'Alic3', 'alice@example.com', True)

    @db_session
    def test_delete_user(self):
        self.create_data()

        # Delete invalid UUID
        self.assertRaises(ValueError, UserManager.delete, 'invalid-uuid')
        self.assertRaises(ValueError, UserManager.delete, 0xfee1b4d)
        self.assertEqual(db.User.select().count(), 3)

        # Delete non-existent user
        self.assertRaises(ObjectNotFound, UserManager.delete, uuid.uuid4())
        self.assertEqual(db.User.select().count(), 3)

        # Delete existing users
        for name in ['alice', 'bob', 'charlie']:
            user = db.User.get(name = name)
            UserManager.delete(user.id)
            self.assertRaises(ObjectNotFound, db.User.__getitem__, user.id)
        commit()
        self.assertEqual(db.User.select().count(), 0)

    @db_session
    def test_delete_by_name(self):
        self.create_data()

        # Delete existing users
        for name in ['alice', 'bob', 'charlie']:
            UserManager.delete_by_name(name)
            self.assertFalse(db.User.exists(name = name))

        # Delete non-existent user
        self.assertRaises(ObjectNotFound, UserManager.delete_by_name, 'null')

    @db_session
    def test_try_auth(self):
        self.create_data()

        # Test authentication
        for name in ['alice', 'bob', 'charlie']:
            user = db.User.get(name = name)
            authed = UserManager.try_auth(name, name.upper())
            self.assertEqual(authed, user)

        # Wrong password
        self.assertIsNone(UserManager.try_auth('alice', 'bad'))
        self.assertIsNone(UserManager.try_auth('alice', 'alice'))

        # Non-existent user
        self.assertIsNone(UserManager.try_auth('null', 'null'))

    @db_session
    def test_change_password(self):
        self.create_data()

        # With existing users
        for name in ['alice', 'bob', 'charlie']:
            user = db.User.get(name = name)
            # Good password
            UserManager.change_password(user.id, name.upper(), 'newpass')
            self.assertEqual(UserManager.try_auth(name, 'newpass'), user)
            # Old password
            self.assertEqual(UserManager.try_auth(name, name.upper()), None)
            # Wrong password
            self.assertRaises(ValueError, UserManager.change_password, user.id, 'badpass', 'newpass')

        # Ensure we still got the same number of users
        self.assertEqual(db.User.select().count(), 3)

        # With invalid UUID
        self.assertRaises(ValueError, UserManager.change_password, 'invalid-uuid', 'oldpass', 'newpass')

        # Non-existent user
        self.assertRaises(ObjectNotFound, UserManager.change_password, uuid.uuid4(), 'oldpass', 'newpass')

    @db_session
    def test_change_password2(self):
        self.create_data()

        # With existing users
        for name in ['alice', 'bob', 'charlie']:
            UserManager.change_password2(name, 'newpass')
            user = db.User.get(name = name)
            self.assertEqual(UserManager.try_auth(name, 'newpass'), user)
            self.assertEqual(UserManager.try_auth(name, name.upper()), None)

        # Non-existent user
        self.assertRaises(ObjectNotFound, UserManager.change_password2, 'null', 'newpass')

if __name__ == '__main__':
    unittest.main()