# Copyright 2021 (c) Anna Schumaker.
from gi.repository import Gtk

class VisibleTracks(Gtk.Label):
    def __init__(self):
        Gtk.Label.__init__(self)
        self.set_halign(Gtk.Align.START)
        self.set_hexpand(True)

    def set_count(self, n):
        s = 's' if n != 1 else ''
        self.set_text(f"Showing {n} track{s}")


class Runtime(Gtk.Label):
    def __init__(self):
        Gtk.Label.__init__(self)
        self.set_halign(Gtk.Align.END)
        self.set_hexpand(True)

    def set_runtime(self, seconds):
        (min,  sec) = divmod(seconds, 60)
        (hour, min) = divmod(min, 60)
        (day, hour) = divmod(hour, 24)
        (week, day) = divmod(day, 7)

        vals = [ ("week", week), ("day", day), ("hour", hour),
                 ("minute", min), ("second", sec) ]
        text = [ f"{v} {k}{'s' if v != 1 else ''}" for (k, v) in vals if v != 0 ]

        self.set_text(', '.join(text) if len(text) > 0 else "0 seconds")


class Footer(Gtk.Box):
    def __init__(self, filter):
        Gtk.Box.__init__(self)
        self.visible = VisibleTracks()
        self.runtime = Runtime()

        self.append(self.visible)
        self.append(self.runtime)

        filter.connect("notify::pending", self.update_visible)
        self.set_margin_start(5)
        self.set_margin_end(5)

    def update_visible(self, model, param):
        self.visible.set_count(model.get_n_items())
        self.runtime.set_runtime(model.get_runtime())