#!/usr/bin/python3

from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QWidget, QDockWidget, QTabWidget, QLineEdit, QCheckBox, QPushButton, QVBoxLayout

from .file import FileSettings
from .behavior import BehaviourSettings
from .category import Category
from .sub_category import SubCategory


class Settings(QDockWidget):
    def __init__(self, app, parent=None):
        super().__init__(parent)

        self.app = app

        self.setAllowedAreas(
            Qt.DockWidgetArea.LeftDockWidgetArea |
            Qt.DockWidgetArea.RightDockWidgetArea |
            Qt.DockWidgetArea.BottomDockWidgetArea
        )

        self.setWindowTitle("Settings")

        self.content = QWidget(self)
        self.content_layout = QVBoxLayout()
        self.content.setLayout(self.content_layout)

        self.tabs = QTabWidget(self.content)
        self.content_layout.addWidget(self.tabs)

        self.file_settings = Category()

        self.file_settings.paths = SubCategory("Paths", "Path related settings")
        self.file_settings.add_sub_category(self.file_settings.paths)

        self.file_settings.paths.library_path_input = QLineEdit()
        self.file_settings.paths.add_setting("Library Path:", self.file_settings.paths.library_path_input)

        self.tabs.addTab(self.file_settings, "Files")

        self.behavior_settings = Category()

        self.behavior_settings.playlist = SubCategory("Playlist", "Playlist behavior")
        self.behavior_settings.add_sub_category(self.behavior_settings.playlist)

        self.behavior_settings.playlist.load_on_start = QCheckBox()
        self.behavior_settings.playlist.add_setting("Load on start:", self.behavior_settings.playlist.load_on_start)

        self.behavior_settings.track = SubCategory("Track", "Track behavior")
        self.behavior_settings.add_sub_category(self.behavior_settings.track)

        self.behavior_settings.track.clear_cache = QCheckBox()
        self.behavior_settings.track.add_setting(
            "Clear cache:",
            self.behavior_settings.track.clear_cache,
            "Automatically clear the track's cache after it finished. This greatly reduces RAM usage."
        )

        self.tabs.addTab(self.behavior_settings, "Behavior")

        self.save_button = QPushButton("&Save", self.content)
        self.content_layout.addWidget(self.save_button)

        self.setWidget(self.content)

        self.visibilityChanged.connect(self.update_all)
        self.save_button.pressed.connect(self.write_settings)

    def update_all(self, _=True):  # ignore visible parameter passed by visibilityChanged event
        self.file_settings.paths.library_path_input.setText(self.app.settings.library_path)
        self.behavior_settings.track.clear_cache.setChecked(self.app.settings.clear_track_cache)
        self.behavior_settings.playlist.load_on_start.setChecked(self.app.settings.load_on_start)

    def update_settings(self, key, value):
        match key:
            case "library_path":
                self.file_settings.paths.library_path_input.setText(value)

            case "clear_track_cache":
                self.behavior_settings.track.clear_cache.setDown(value)

            case "load_on_start":
                self.behavior_settings.playlist.load_on_start.setChecked(value)

    def write_settings(self):
        self.app.settings.library_path = self.file_settings.paths.library_path_input.text()
        self.app.settings.clear_track_cache = self.behavior_settings.track.clear_cache.isChecked()
        self.app.settings.load_on_start = self.behavior_settings.playlist.load_on_start.isChecked()