#!/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.folder import FolderManager

import os
import shutil
import tempfile
import unittest
import uuid

from pony.orm import ObjectNotFound

db_session = db.db_session

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

        # Create some temporary directories
        self.media_dir = tempfile.mkdtemp()
        self.music_dir = tempfile.mkdtemp()

    def tearDown(self):
        db.release_database()
        shutil.rmtree(self.media_dir)
        shutil.rmtree(self.music_dir)

    def create_folders(self):
        # Add test folders
        self.assertIsNotNone(FolderManager.add('media', self.media_dir))
        self.assertIsNotNone(FolderManager.add('music', self.music_dir))

        folder = db.Folder(
            root = False,
            name = 'non-root',
            path = os.path.join(self.music_dir, 'subfolder')
        )

        artist = db.Artist(name = 'Artist')
        album = db.Album(name = 'Album', artist = artist)

        root = db.Folder.get(name = 'media')
        track = db.Track(
            title = 'Track',
            artist = artist,
            album = album,
            disc = 1,
            number = 1,
            path = os.path.join(self.media_dir, 'somefile'),
            folder = root,
            root_folder = root,
            duration = 2,
            content_type = 'audio/mpeg',
            bitrate = 320,
            last_modification = 0
        )

    @db_session
    def test_get_folder(self):
        self.create_folders()

        # Get existing folders
        for name in ['media', 'music']:
            folder = db.Folder.get(name = name, root = True)
            self.assertEqual(FolderManager.get(folder.id), folder)

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

        # Non-existent folder
        self.assertRaises(ObjectNotFound, FolderManager.get, uuid.uuid4())

    @db_session
    def test_add_folder(self):
        self.create_folders()
        self.assertEqual(db.Folder.select().count(), 3)

        # Create duplicate
        self.assertRaises(ValueError, FolderManager.add, 'media', self.media_dir)
        self.assertEqual(db.Folder.select(lambda f: f.name == 'media').count(), 1)

        # Duplicate path
        self.assertRaises(ValueError, FolderManager.add, 'new-folder', self.media_dir)
        self.assertEqual(db.Folder.select(lambda f: f.path == self.media_dir).count(), 1)

        # Invalid path
        path = os.path.abspath('/this/not/is/valid')
        self.assertRaises(ValueError, FolderManager.add, 'invalid-path', path)
        self.assertFalse(db.Folder.exists(path = path))

        # Subfolder of already added path
        path = os.path.join(self.media_dir, 'subfolder')
        os.mkdir(path)
        self.assertRaises(ValueError, FolderManager.add, 'subfolder', path)
        self.assertEqual(db.Folder.select().count(), 3)

        # Parent folder of an already added path
        path = os.path.join(self.media_dir, '..')
        self.assertRaises(ValueError, FolderManager.add, 'parent', path)
        self.assertEqual(db.Folder.select().count(), 3)

    def test_delete_folder(self):
        with db_session:
            self.create_folders()

        with db_session:
            # Delete invalid UUID
            self.assertRaises(ValueError, FolderManager.delete, 'invalid-uuid')
            self.assertEqual(db.Folder.select().count(), 3)

            # Delete non-existent folder
            self.assertRaises(ObjectNotFound, FolderManager.delete, uuid.uuid4())
            self.assertEqual(db.Folder.select().count(), 3)

            # Delete non-root folder
            folder = db.Folder.get(name = 'non-root')
            self.assertRaises(ObjectNotFound, FolderManager.delete, folder.id)
            self.assertEqual(db.Folder.select().count(), 3)

        with db_session:
            # Delete existing folders
            for name in ['media', 'music']:
                folder = db.Folder.get(name = name, root = True)
                FolderManager.delete(folder.id)
                self.assertRaises(ObjectNotFound, db.Folder.__getitem__, folder.id)

            # Even if we have only 2 root folders, non-root should never exist and be cleaned anyway
            self.assertEqual(db.Folder.select().count(), 0)

    def test_delete_by_name(self):
        with db_session:
            self.create_folders()

        with db_session:
            # Delete non-existent folder
            self.assertRaises(ObjectNotFound, FolderManager.delete_by_name, 'null')
            self.assertEqual(db.Folder.select().count(), 3)

        with db_session:
            # Delete existing folders
            for name in ['media', 'music']:
                FolderManager.delete_by_name(name)
                self.assertFalse(db.Folder.exists(name = name))

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