#!/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
#
# Distributed under terms of the GNU AGPLv3 license.

import re
import unittest
import uuid

from collections import namedtuple
from pony.orm import db_session

from supysonic import db

date_regex = re.compile(r'^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}$')

class DbTestCase(unittest.TestCase):
    def setUp(self):
        db.init_database('sqlite:', True)

        try:
            self.assertRegex
        except AttributeError:
            self.assertRegex = self.assertRegexpMatches

    def tearDown(self):
        db.release_database()

    def create_some_folders(self):
        root_folder = db.Folder(
            root = True,
            name = 'Root folder',
            path = 'tests'
        )

        child_folder = db.Folder(
            root = False,
            name = 'Child folder',
            path = 'tests/assets',
            has_cover_art = True,
            parent = root_folder
        )

        return root_folder, child_folder

    def create_some_tracks(self, artist = None, album = None):
        root, child = self.create_some_folders()

        if not artist:
            artist = db.Artist(name = 'Test artist')

        if not album:
            album = db.Album(artist = artist, name = 'Test Album')

        track1 = db.Track(
            title = 'Track Title',
            album = album,
            artist = artist,
            disc = 1,
            number = 1,
            duration = 3,
            bitrate = 320,
            path = 'tests/assets/empty',
            content_type = 'audio/mpeg',
            last_modification = 1234,
            root_folder = root,
            folder = child
        )

        track2 = db.Track(
            title = 'One Awesome Song',
            album = album,
            artist = artist,
            disc = 1,
            number = 2,
            duration = 5,
            bitrate = 96,
            path = 'tests/assets/23bytes',
            content_type = 'audio/mpeg',
            last_modification = 1234,
            root_folder = root,
            folder = child
        )

        return track1, track2

    def create_user(self, name = 'Test User'):
        return db.User(
            name = name,
            password = 'secret',
            salt = 'ABC+',
        )

    def create_playlist(self):

        playlist = db.Playlist(
            user = self.create_user(),
            name = 'Playlist!'
        )

        return playlist

    @db_session
    def test_folder_base(self):
        root_folder, child_folder = self.create_some_folders()

        MockUser = namedtuple('User', [ 'id' ])
        user = MockUser(uuid.uuid4())

        root = root_folder.as_subsonic_child(user)
        self.assertIsInstance(root, dict)
        self.assertIn('id', root)
        self.assertIn('isDir', root)
        self.assertIn('title', root)
        self.assertIn('album', root)
        self.assertIn('created', root)
        self.assertTrue(root['isDir'])
        self.assertEqual(root['title'], 'Root folder')
        self.assertEqual(root['album'], 'Root folder')
        self.assertRegex(root['created'], date_regex)

        child = child_folder.as_subsonic_child(user)
        self.assertIn('parent', child)
        self.assertIn('artist', child)
        self.assertIn('coverArt', child)
        self.assertEqual(child['parent'], str(root_folder.id))
        self.assertEqual(child['artist'], root_folder.name)
        self.assertEqual(child['coverArt'], child['id'])

    @db_session
    def test_folder_annotation(self):
        root_folder, child_folder = self.create_some_folders()

        user = self.create_user()
        star = db.StarredFolder(
            user = user,
            starred = root_folder
        )
        rating_user = db.RatingFolder(
            user = user,
            rated = root_folder,
            rating = 2
        )
        other = self.create_user('Other')
        rating_other = db.RatingFolder(
            user = other,
            rated = root_folder,
            rating = 5
        )

        root = root_folder.as_subsonic_child(user)
        self.assertIn('starred', root)
        self.assertIn('userRating', root)
        self.assertIn('averageRating', root)
        self.assertRegex(root['starred'], date_regex)
        self.assertEqual(root['userRating'], 2)
        self.assertEqual(root['averageRating'], 3.5)

        child = child_folder.as_subsonic_child(user)
        self.assertNotIn('starred', child)
        self.assertNotIn('userRating', child)

    @db_session
    def test_artist(self):
        artist = db.Artist(name = 'Test Artist')

        user = self.create_user()
        star = db.StarredArtist(user = user, starred = artist)

        artist_dict = artist.as_subsonic_artist(user)
        self.assertIsInstance(artist_dict, dict)
        self.assertIn('id', artist_dict)
        self.assertIn('name', artist_dict)
        self.assertIn('albumCount', artist_dict)
        self.assertIn('starred', artist_dict)
        self.assertEqual(artist_dict['name'], 'Test Artist')
        self.assertEqual(artist_dict['albumCount'], 0)
        self.assertRegex(artist_dict['starred'], date_regex)

        db.Album(name = 'Test Artist', artist = artist) # self-titled
        db.Album(name = 'The Album After The First One', artist = artist)

        artist_dict = artist.as_subsonic_artist(user)
        self.assertEqual(artist_dict['albumCount'], 2)

    @db_session
    def test_album(self):
        artist = db.Artist(name = 'Test Artist')
        album = db.Album(artist = artist, name = 'Test Album')

        user = self.create_user()
        star = db.StarredAlbum(
            user = user,
            starred = album
        )

        # No tracks, shouldn't be stored under normal circumstances
        self.assertRaises(ValueError, album.as_subsonic_album, user)

        self.create_some_tracks(artist, album)

        album_dict = album.as_subsonic_album(user)
        self.assertIsInstance(album_dict, dict)
        self.assertIn('id', album_dict)
        self.assertIn('name', album_dict)
        self.assertIn('artist', album_dict)
        self.assertIn('artistId', album_dict)
        self.assertIn('songCount', album_dict)
        self.assertIn('duration', album_dict)
        self.assertIn('created', album_dict)
        self.assertIn('starred', album_dict)
        self.assertEqual(album_dict['name'], album.name)
        self.assertEqual(album_dict['artist'], artist.name)
        self.assertEqual(album_dict['artistId'], str(artist.id))
        self.assertEqual(album_dict['songCount'], 2)
        self.assertEqual(album_dict['duration'], 8)
        self.assertRegex(album_dict['created'], date_regex)
        self.assertRegex(album_dict['starred'], date_regex)

    @db_session
    def test_track(self):
        track1, track2 = self.create_some_tracks()

        # Assuming SQLite doesn't enforce foreign key constraints
        MockUser = namedtuple('User', [ 'id' ])
        user = MockUser(uuid.uuid4())

        track1_dict = track1.as_subsonic_child(user, None)
        self.assertIsInstance(track1_dict, dict)
        self.assertIn('id', track1_dict)
        self.assertIn('parent', track1_dict)
        self.assertIn('isDir', track1_dict)
        self.assertIn('title', track1_dict)
        self.assertFalse(track1_dict['isDir'])
        # ... we'll test the rest against the API XSD.

    @db_session
    def test_user(self):
        user = self.create_user()

        user_dict = user.as_subsonic_user()
        self.assertIsInstance(user_dict, dict)

    @db_session
    def test_chat(self):
        user = self.create_user()

        line = db.ChatMessage(
            user = user,
            message = 'Hello world!'
        )

        line_dict = line.responsize()
        self.assertIsInstance(line_dict, dict)
        self.assertIn('username', line_dict)
        self.assertEqual(line_dict['username'], user.name)

    @db_session
    def test_playlist(self):
        playlist = self.create_playlist()
        playlist_dict = playlist.as_subsonic_playlist(playlist.user)
        self.assertIsInstance(playlist_dict, dict)

    @db_session
    def test_playlist_tracks(self):
        playlist = self.create_playlist()
        track1, track2 = self.create_some_tracks()

        playlist.add(track1)
        playlist.add(track2)
        self.assertSequenceEqual(playlist.get_tracks(), [ track1, track2 ])

        playlist.add(track2.id)
        playlist.add(track1.id)
        self.assertSequenceEqual(playlist.get_tracks(), [ track1, track2, track2, track1 ])

        playlist.clear()
        self.assertSequenceEqual(playlist.get_tracks(), [])

        playlist.add(str(track1.id))
        self.assertSequenceEqual(playlist.get_tracks(), [ track1 ])

        self.assertRaises(ValueError, playlist.add, 'some string')
        self.assertRaises(NameError, playlist.add, 2345)

    @db_session
    def test_playlist_remove_tracks(self):
        playlist = self.create_playlist()
        track1, track2 = self.create_some_tracks()

        playlist.add(track1)
        playlist.add(track2)
        playlist.remove_at_indexes([ 0, 2 ])
        self.assertSequenceEqual(playlist.get_tracks(), [ track2 ])

        playlist.add(track1)
        playlist.add(track2)
        playlist.add(track2)
        playlist.remove_at_indexes([ 2, 1 ])
        self.assertSequenceEqual(playlist.get_tracks(), [ track2, track2 ])

        playlist.add(track1)
        playlist.remove_at_indexes([ 1, 1 ])
        self.assertSequenceEqual(playlist.get_tracks(), [ track2, track1 ])

    @db_session
    def test_playlist_fixing(self):
        playlist = self.create_playlist()
        track1, track2 = self.create_some_tracks()

        playlist.add(track1)
        playlist.add(uuid.uuid4())
        playlist.add(track2)
        self.assertSequenceEqual(playlist.get_tracks(), [ track1, track2 ])

        track2.delete()
        self.assertSequenceEqual(playlist.get_tracks(), [ track1 ])

        playlist.tracks = '{0},{0},some random garbage,{0}'.format(track1.id)
        self.assertSequenceEqual(playlist.get_tracks(), [ track1, track1, track1 ])

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