from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

import logging
import vlc

class PlaylistModel(QAbstractListModel):
    def __init__(self, medialist, *args, **kwargs):
        super(PlaylistModel, self).__init__(*args, **kwargs)
        self.medialist = medialist

    def data(self, index, role):
        if role == Qt.DisplayRole:
            return self.medialist.item_at_index(index.row()).get_mrl()

    def rowCount(self, index):
        return self.medialist.count()

class Playlist:
    def __init__(self, window):
        self.medialist = vlc.MediaList()
        self.model = PlaylistModel(self.medialist)
        self.window = window

        window.player.set_media_list(self.medialist)
        window.songListView.setModel(self.model)
        window.songListView.selectionModel().selectionChanged.connect(self.playlistSelectionChanged)
        window.addSongButton.pressed.connect(self.addSong)

    def addSong(self):
        path, _ = QFileDialog.getOpenFileName(self.window, "Open file", "", "mp3 Audio (*.mp3);FLAC audio (*.flac);All files (*.*)")
        if path:
            media = vlc.Media(path)
            self.medialist.add_media(media)
            self.model.layoutChanged.emit()
            logging.debug(f"Added song: {path}")

    def playlistSelectionChanged(self, ix):
        i = ix.indexes()[0].row()
        self.setCurrent(i)
        #path = self.playlist.current.filePath
        #self.player.set_media(path)
        """
        self.abListModel.abList = self.internalState[path]
        self.abListView.selectionModel().clearSelection()
        self.abListModel.layoutChanged.emit()
        self.aSlider.setValue(0)
        self.bSlider.setValue(0)
        """

    def setCurrent(self, index):
        media = self.medialist.item_at_index(index)
        if not media:
            raise Exception(f"Invalid playlist index {index}")
        self.medialist.set_media(media)
        logging.debug(f"Selected song: {self.medialist.media().get_mrl()}")