import json
import os.path as path
from os import makedirs, listdir, remove
from deemix import __version__ as deemixVersion
import logging
import datetime
import platform

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger('deemix')

import deemix.utils.localpaths as localpaths

class Settings:
    def __init__(self, configFolder=None):
        self.settings = {}
        self.configFolder = configFolder
        if not self.configFolder:
            self.configFolder = localpaths.getConfigFolder()
        self.defaultSettings = {
          "downloadLocation": path.join(localpaths.getHomeFolder(), 'deemix Music'),
          "tracknameTemplate": "%artist% - %title%",
          "albumTracknameTemplate": "%tracknumber% - %title%",
          "playlistTracknameTemplate": "%position% - %artist% - %title%",
          "createPlaylistFolder": True,
          "playlistNameTemplate": "%playlist%",
          "createArtistFolder": False,
          "artistNameTemplate": "%artist%",
          "createAlbumFolder": True,
          "albumNameTemplate": "%artist% - %album%",
          "createCDFolder": True,
          "createStructurePlaylist": False,
          "createSingleFolder": False,
          "padTracks": True,
          "paddingSize": "0",
          "illegalCharacterReplacer": "_",
          "queueConcurrency": 3,
          "maxBitrate": "3",
          "fallbackBitrate": True,
          "fallbackSearch": False,
          "logErrors": True,
          "logSearched": False,
          "saveDownloadQueue": False,
          "overwriteFile": "n",
          "createM3U8File": False,
          "playlistFilenameTemplate": "playlist",
          "syncedLyrics": False,
          "embeddedArtworkSize": 800,
          "embeddedArtworkPNG": False,
          "localArtworkSize": 1400,
          "localArtworkFormat": "jpg",
          "saveArtwork": True,
          "coverImageTemplate": "cover",
          "saveArtworkArtist": False,
          "artistImageTemplate": "folder",
          "jpegImageQuality": 80,
          "dateFormat": "Y-M-D",
          "albumVariousArtists": True,
          "removeAlbumVersion": False,
          "removeDuplicateArtists": False,
          "featuredToTitle": "0",
          "titleCasing": "nothing",
          "artistCasing": "nothing",
          "executeCommand": "",
          "tags": {
            "title": True,
            "artist": True,
            "album": True,
            "cover": True,
            "trackNumber": True,
            "trackTotal": False,
            "discNumber": True,
            "discTotal": False,
            "albumArtist": True,
            "genre": True,
            "year": True,
            "date": True,
            "explicit": False,
            "isrc": True,
            "length": True,
            "barcode": True,
            "bpm": True,
            "replayGain": False,
            "label": True,
            "lyrics": False,
            "syncedLyrics": False,
            "copyright": False,
            "composer": False,
            "involvedPeople": False,
            "savePlaylistAsCompilation": False,
            "useNullSeparator": False,
            "saveID3v1": True,
            "multiArtistSeparator": "default",
            "singleAlbumArtist": False,
            "coverDescriptionUTF8": False
          }
        }

        # Create config folder if it doesn't exsist
        makedirs(self.configFolder, exist_ok=True)

        # Create config file if it doesn't exsist
        if not path.isfile(path.join(self.configFolder, 'config.json')):
            with open(path.join(self.configFolder, 'config.json'), 'w') as f:
                json.dump(self.defaultSettings, f, indent=2)

        # Read config file
        with open(path.join(self.configFolder, 'config.json'), 'r') as configFile:
            self.settings = json.load(configFile)

        self.settingsCheck()

        # Make sure the download path exsits
        makedirs(self.settings['downloadLocation'], exist_ok=True)

        # LOGFILES

        # Create logfile name and path
        logspath = path.join(self.configFolder, 'logs')
        now = datetime.datetime.now()
        logfile = now.strftime("%Y-%m-%d_%H%M%S")+".log"
        makedirs(logspath, exist_ok=True)

        # Add handler for logging
        fh = logging.FileHandler(path.join(logspath, logfile), 'w', 'utf-8')
        fh.setLevel(logging.DEBUG)
        fh.setFormatter(logging.Formatter('%(asctime)s - [%(levelname)s] %(message)s'))
        logger.addHandler(fh)
        logger.info(f"{platform.platform(True, True)} - Python {platform.python_version()}, deemix {deemixVersion}")

        # Only keep last 5 logfiles (to preserve disk space)
        logslist = listdir(logspath)
        logslist.sort()
        if len(logslist)>5:
            for i in range(len(logslist)-5):
                remove(path.join(logspath, logslist[i]))

    # Saves the settings
    def saveSettings(self, newSettings=None):
        if newSettings:
            self.settings = newSettings
        with open(path.join(self.configFolder, 'config.json'), 'w') as configFile:
            json.dump(self.settings, configFile, indent=2)

    # Checks if the default settings have changed
    def settingsCheck(self):
        changes = 0
        for x in self.defaultSettings:
            if not x in self.settings or type(self.settings[x]) != type(self.defaultSettings[x]):
                self.settings[x] = self.defaultSettings[x]
                changes += 1
        for x in self.defaultSettings['tags']:
            if not x in self.settings['tags'] or type(self.settings['tags'][x]) != type(self.defaultSettings['tags'][x]):
                self.settings['tags'][x] = self.defaultSettings['tags'][x]
                changes += 1
        if self.settings['downloadLocation'] == "":
            self.settings['downloadLocation'] = path.join(localpaths.getHomeFolder(), 'deemix Music')
            changes += 1
        for template in ['tracknameTemplate', 'albumTracknameTemplate', 'playlistTracknameTemplate', 'playlistNameTemplate', 'artistNameTemplate', 'albumNameTemplate', 'playlistFilenameTemplate', 'coverImageTemplate', 'artistImageTemplate', 'paddingSize']:
            if self.settings[template] == "":
                self.settings[template] = self.defaultSettings[template]
                changes += 1
        if changes > 0:
            self.saveSettings()