# pylint: disable=C0111,R0903

'''Displays system load.

Parameters:
    * load.warning : Warning threshold for the one-minute load average (defaults to 70% of the number of CPUs)
    * load.critical: Critical threshold for the one-minute load average (defaults to 80% of the number of CPUs)
'''

import os
import multiprocessing

import core.module
import core.input

class Module(core.module.Module):
    def __init__(self, config, theme):
        super().__init__(config, theme, core.widget.Widget(self.load))
        self._load = [0, 0, 0]
        try:
            self._cpus = multiprocessing.cpu_count()
        except NotImplementedError as e:
            self._cpus = 1
        core.input.register(self, button=core.input.LEFT_MOUSE,
            cmd='gnome-system-monitor')

    def load(self, widget):
        return '{:.02f}/{:.02f}/{:.02f}'.format(
            self._load[0], self._load[1], self._load[2]
        )

    def update(self):
        self._load = os.getloadavg()

    def state(self, widget):
        return self.threshold_state(self._load[0], self._cpus*0.7, self._cpus*0.8)

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