# -*- coding: utf-8 -*-
# Copyright (c) 2015 Jörg Thalheim (Mic92)
# Copyright (C) 2019, Krisztián Veress <krive001@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from __future__ import division
from libqtile.widget import base
import subprocess


def get_meminfo():
    val = {}
    with open('/proc/meminfo') as file:
        for line in file:
            key, tail = line.split(':')
            uv = tail.split()
            val[key] = int(uv[0]) // 1024
    val['MemUsed'] = (val['MemTotal'] + val['Shmem'] - val['MemFree'] -
                      val['Buffers'] - val['Cached'] - val['SReclaimable'])
    # Memtotal + Shmem - MemFree - Buffers - Cached - SReclaimable
    val['Memsza'] = (100 * val['MemUsed']) // val['MemTotal']
    return val


class Memory(base.InLoopPollText):
    """Displays memory usage"""
    orientations = base.ORIENTATION_HORIZONTAL
    defaults = [
        ("fmt", "{MemUsed}M/{MemTotal}M", "see /proc/meminfo for field names"),
        ('execute', None, 'Command to execute on click'),

    ]

    def __init__(self, **config):
        super(Memory, self).__init__(**config)
        self.add_defaults(Memory.defaults)

    def poll(self):
        return self.fmt.format(**get_meminfo())

    def button_press(self, x, y, button):
        base.ThreadedPollText.button_press(self, x, y, button)
        if button == 1 and self.execute is not None:
            subprocess.Popen([self.execute], shell=True)



mem_dict = get_meminfo()
for k, v in mem_dict.items():
    print(k, "=>", v)
#  print(mem_dict)
