# Copyright 2021 (c) Anna Schumaker.
import db
import pathlib
from gi.repository import Gio
from gi.repository import Gtk
from . import task

class ProgressBar(Gtk.ProgressBar):
    def __init__(self, queue):
        Gtk.ProgressBar.__init__(self)

        self.queue = queue
        self.queue.connect("task-pushed", self.on_task_pushed)
        self.queue.connect("run-task", self.on_run_task)
        self.queue.connect("tasks-finished", self.on_tasks_finished)

        self.set_valign(Gtk.Align.CENTER)
        self.set_hexpand(True)
        self.set_visible(len(queue.tasks) > 0)

    def on_task_pushed(self, queue, task):
        self.set_visible(True)

    def on_run_task(self, queue, task):
        self.set_fraction(queue.progress)

    def on_tasks_finished(self, queue):
        self.set_visible(False)


class DirectoryChooserWidget(Gtk.FileChooserWidget):
    def __init__(self):
        Gtk.FileChooserWidget.__init__(self)
        self.filter = Gtk.FileFilter()
        self.filter.add_mime_type("inode/directory")

        music_dir   = pathlib.Path("~/Music").expanduser()
        music_gfile = Gio.File.new_for_path(str(music_dir))

        self.add_shortcut_folder(music_gfile)
        self.set_action(Gtk.FileChooserAction.SELECT_FOLDER)
        self.set_create_folders(False)
        self.set_filter(self.filter)

    def selected_path(self):
        if (file := self.get_file()) == None:
            file = self.get_current_folder()
        return pathlib.Path(file.get_path())


class DirectoryChooserPopover(Gtk.Popover):
    def __init__(self, queue):
        Gtk.Popover.__init__(self)
        self.chooser = DirectoryChooserWidget()
        self.cancel  = Gtk.Button.new_with_label("Cancel")
        self.select  = Gtk.Button.new_with_label("Add Folder")
        self.queue   = queue

        self.cancel.connect("clicked", self.do_cancel)
        self.select.connect("clicked", self.do_select)

        self.grid = Gtk.Grid()
        self.grid.attach(self.chooser, 0, 0, 2, 1)
        self.grid.attach(self.cancel,  0, 1, 1, 1)
        self.grid.attach(self.select,  1, 1, 1, 1)

        self.select.add_css_class("suggested-action")
        self.add_css_class("normal-icons")
        self.set_child(self.grid)

    def do_cancel(self, button):
        self.popdown()

    def do_select(self, button):
        if (path := self.chooser.selected_path()) != None:
            library = db.library.Table.find(path)
            self.queue.push(task.CheckSchedulerTask(library))
            self.queue.push(task.DirectoryTask(library, library.path))
            self.popdown()


class AddFolderButton(Gtk.MenuButton):
    def __init__(self, queue):
        Gtk.MenuButton.__init__(self)
        self.popover = DirectoryChooserPopover(queue)
        self.set_popover(self.popover)
        self.set_icon_name("folder-new")
        self.set_direction(Gtk.ArrowType.UP)


class ScannerButton(Gtk.Button):
    def __init__(self, queue, icon_name):
        Gtk.Button.__init__(self)
        self.set_icon_name(icon_name)
        self.set_hexpand(True)
        self.queue = queue


class UpdateButton(ScannerButton):
    def __init__(self, library, queue):
        ScannerButton.__init__(self, queue, "view-refresh")
        self.library = library

    def do_clicked(self):
        self.queue.push(task.CheckSchedulerTask(self.library))
        self.queue.push(task.DirectoryTask(self.library, self.library.path))


class UpdateAllButton(ScannerButton):
    def __init__(self, queue):
        ScannerButton.__init__(self, queue, "view-refresh")

    def do_clicked(self):
        for i in range(db.library.Table.get_n_items()):
            library = db.library.Table.get_item(i)
            self.queue.push(task.CheckSchedulerTask(library))
            self.queue.push(task.DirectoryTask(library, library.path))


class RemoveButton(ScannerButton):
    def __init__(self, library, queue):
        ScannerButton.__init__(self, queue, "list-remove")
        self.library = library

    def do_clicked(self):
        self.queue.push(task.RemoveLibrarySchedulerTask(self.library))


class EnableSwitch(Gtk.Switch):
    def __init__(self, library, queue):
        Gtk.Switch.__init__(self)
        self.set_active(library.enabled)
        self.set_halign(Gtk.Align.CENTER)
        self.set_valign(Gtk.Align.CENTER)
        self.connect("notify::active", self.switched)
        self.library = library
        self.queue = queue

    def switched(self, switch, param):
        self.library.enabled = switch.get_active()