# pylint: disable=C0111,R0903

"""Displays CPU utilization across all CPUs.

Parameters:
    * cpu.warning : Warning threshold in % of CPU usage (defaults to 70%)
    * cpu.critical: Critical threshold in % of CPU usage (defaults to 80%)
    * cpu.format  : Format string (defaults to "{:.01f}%)")
"""

try:
    import psutil
except ImportError:
    pass

import bumblebee.input
import bumblebee.output
import bumblebee.engine

class Module(bumblebee.engine.Module):
    def __init__(self, engine, config):
        widget = bumblebee.output.Widget(full_text=self.utilization)
        widget.set("theme.minwidth", "99.9%")
        super(Module, self).__init__(engine, config, widget)
        self._utilization = psutil.cpu_percent(percpu=False)
        engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
                                       cmd="gnome-system-monitor")

    @property
    def _format(self):
        return self.parameter("format", "{:.01f}%")

    def utilization(self, _):
        return self._format.format(self._utilization)

    def update(self, widgets):
        self._utilization = psutil.cpu_percent(percpu=False)

    def state(self, _):
        return self.threshold_state(self._utilization, 70, 80)

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