# -*- coding: utf-8 -*-
"""
Displays and controls the mute status of the default microphone.

Displays whether the current microphone is muted or not. A click on the icon
will toggle this status. Relies on pulseaudio.

Configuration parameters:
    format_muted: text displayed when muted
        (default FontAwesome)
    format_unmuted: text displayed when unmuted
        (default FontAwesome)

Colors:
    color_mute: when muted
    color_unmute: when unmuted
"""

import subprocess


class Py3status:
    format_muted = '\uf131'  # FontAwesome
    format_unmuted = '\uf130'  # FontAwesome

    class Error(Exception):
        pass

    def microphone(self):
        isMute = self.__getMuteStatus__()
        color = self.py3.COLOR_MUTE if isMute else self.py3.COLOR_UNMUTE
        text = self.format_muted if isMute else self.format_unmuted
        return {
            'full_text': text,
            'color': color,
        }

    def __getPaList__(self):
        try:
            paOutput = subprocess.check_output(["pacmd", "list-sources"])
        except CalledProcessError:
            raise Error()

        return paOutput.decode()

    def __getMuteStatus__(self):
        paList = self.__getPaList__()
        fromCurrent = paList[paList.find('* index:'):]
        MUTED_STR = 'muted: '
        fromMutestat = fromCurrent[fromCurrent.find(MUTED_STR)
                                   + len(MUTED_STR):]
        return fromMutestat[:3] == 'yes'

    def __toggleMuteStatus__(self):
        isMuted = self.__getMuteStatus__()
        paList = self.__getPaList__()
        fromCurrent = paList[paList.find('* index: ')+len('* index: '):]
        sourceId = int(fromCurrent[:fromCurrent.find('\n')])
        subprocess.call(['pacmd', 'set-source-mute', str(sourceId),
                         str(int(not isMuted))])

    def on_click(self, event):
        self.__toggleMuteStatus__()