#!/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 db_session, ObjectNotFound

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()