#!/usr/bin/python3

import sys

from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QDialog, QMainWindow
from PyQt5.QtWidgets import QTableWidgetItem, QFileDialog, QListWidgetItem
from threading import Timer
from tinytag import TinyTag

from main_window_ui import Ui_MainWindow
from dlg_search_database_ui import Ui_Dialog

from model import Tracks


class RepeatedTimer:
    def __init__(self, interval, function, *args, **kwargs):
        self._timer = None
        self.interval = interval
        self.function = function
        self.args = args
        self.kwargs = kwargs
        self.is_running = False
        self.start()

    def _run(self):
        self.is_running = False
        self.start()
        self.function(*self.args, **self.kwargs)

    def start(self):
        if not self.is_running:
            self._timer = Timer(self.interval, self._run)
            self._timer.start()
            self.is_running = True

    def stop(self):
        self._timer.cancel()
        self.is_running = False


def ms_to_mmss(ms, decimals=0):
    if not ms:
        return "-"
    if ms < 0:
        sign = "-"
    else:
        sign = ""

    minutes, remainder = divmod(ms, 60 * 1000)
    seconds = remainder / 1000

    return f"{sign}{minutes:.0f}:{seconds:02.{decimals}f}"


class Window(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setupUi(self)
        self.connectSignalsSlots()

        self.resize(1599, 981)

        self.playlist.setColumnWidth(0, 0)
        self.playlist.setColumnWidth(1, 70)
        self.playlist.setColumnWidth(2, 381)
        self.playlist.setColumnWidth(3, 322)
        self.playlist.setColumnWidth(4, 78)
        self.playlist.setColumnWidth(5, 68)
        self.playlist.setColumnWidth(6, 47)
        self.playlist.setColumnWidth(7, 577)

    def __del__(self):
        for column in range(self.playlist.columnCount()):
            print(f"Column {column}: {self.playlist.columnWidth(column)}")
        print(f"Window height: {self.height()} Window width: {self.width()}")

    def connectSignalsSlots(self):
        self.fileButton.clicked.connect(self.selectFile)
        self.databaseButton.clicked.connect(self.selectDatabase)
        self.actionPlay_selected.triggered.connect(self.play_selected)

    def selectDatabase(self):
        dlg = DbDialog(self)
        dlg.exec()

    def play_selected(self):
        if self.playlist.selectionModel().hasSelection():
            row = self.playlist.currentRow()
            print(f"Play id={self.playlist.item(row, 0).text()}")

    def selectFile(self):
        dlg = QFileDialog()
        dlg.setFileMode(QFileDialog.ExistingFile)
        dlg.setViewMode(QFileDialog.Detail)
        ROOT = "/home/kae/music/"
        dlg.setDirectory(ROOT)
        dlg.setNameFilter("Music files (*.flac *.mp3)")

        if dlg.exec_():
            pass
            # TODO Add to database
            # for fname in dlg.selectedFiles():
            #     track = Track(fname)
            #     self.add_to_playlist(track)

    def add_to_playlist(self, track):
        """
        Add track to playlist

        track is an instance of Track
        """

        pl = self.playlist
        row = pl.rowCount()
        pl.insertRow(row)
        item = QTableWidgetItem(str(track.id))
        pl.setItem(row, 0, item)
        item = QTableWidgetItem(str(track.start_gap))
        pl.setItem(row, 1, item)
        item = QTableWidgetItem(track.title)
        pl.setItem(row, 2, item)
        item = QTableWidgetItem(track.artist)
        pl.setItem(row, 3, item)
        item = QTableWidgetItem(ms_to_mmss(track.duration))
        pl.setItem(row, 4, item)
        item = QTableWidgetItem(track.path)
        pl.setItem(row, 7, item)


class DbDialog(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)
        self.ui.lineEdit.textEdited.connect(self.chars_typed)
        self.ui.listWidget.itemDoubleClicked.connect(self.listdclick)

    def chars_typed(self, s):
        if len(s) >= 3:
            matches = Tracks.search_titles(s)
            self.ui.listWidget.clear()
            if matches:
                for track in matches:
                    t = QListWidgetItem()
                    t.setText(
                        f"{track.title} - {track.artist} "
                        f"[{ms_to_mmss(track.duration)}]"
                    )
                    t.setData(Qt.UserRole, track.id)
                    self.ui.listWidget.addItem(t)

    def listdclick(self, entry):
        track_id = entry.data(Qt.UserRole)
        track = Tracks.track_from_id(track_id)
        self.parent().add_to_playlist(track)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = Window()
    win.show()
    sys.exit(app.exec())