# -*- python -*-
'''
xpybar – xmobar replacement written in python
Copyright © 2014, 2015, 2016, 2017, 2018  Mattias Andrée (maandree@kth.se)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
'''

# A xpybar configuration example testing the features of plugins.alsa

import time
import threading

from plugins.softirqs import SoftIRQs
from plugins.clock import Clock


OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True

SCROLL_UP = 4
SCROLL_DOWN = 5

clock = Clock(sync_to = Clock.SECONDS)

last_irqs = SoftIRQs()
last_time = time.monotonic()
index = 0
keys = last_irqs.keys
label = keys[index]
make_label = lambda l : ''.join(w[0] + w[1:].lower() for w in l.split('_')).replace('Tx', '↑').replace('Rx', '↓')
xlabel = make_label(label)
cpus = len(last_irqs[label])
hz = lambda n, l, t : '%.fHz' % ((n - l) / t)

start_ = start
def start():
    start_()
    xasync(lambda : clock.continuous_sync(lambda : bar.invalidate()))

def redraw():
    global last_irqs, last_time
    irqs = SoftIRQs()
    now = time.monotonic()
    t, n, l = now - last_time, irqs[label], last_irqs[label]
    sn, sl = sum(n), sum(l)
    text = '%s: %s : %s(%s)' % (xlabel, ' '.join(hz(*nl, t) for nl in zip(n, l)),
                                hz(sn, sl, t), hz(sn / cpus, sl / cpus, t))
    last_irqs = irqs
    last_time = now
    bar.clear()
    bar.draw_coloured_text(0, 10, 0, 2, text)

def unhandled_event(e):
    global index, label, xlabel
    if isinstance(e, Xlib.protocol.event.ButtonPress):
        if e.detail == SCROLL_UP:
            index = min(index + 1, len(keys) - 1)
            label = keys[index]
            xlabel = make_label(label)
        elif e.detail == SCROLL_DOWN:
            index = max(index - 1, 0)
            label = keys[index]
            xlabel = make_label(label)
        bar.invalidate()