# -*- coding: utf-8 -*-

import os
import sys
import subprocess
try:
    import psutil
except ImportError:
    sys.stderr.write('Error: Yunohost CLI Require psutil\n')
    sys.stderr.write('apt-get install python-psutil\n')
    sys.exit(1)
from datetime import datetime, timedelta
#from psutil._compat import print_

def bytes2human(n):
    symbols = ('K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y')
    prefix = {}
    for i, s in enumerate(symbols):
        prefix[s] = 1 << (i+1)*10
    for s in reversed(symbols):
        if n >= prefix[s]:
            value = float(n) / prefix[s]
            return '%.1f%s' % (value, s)
    return "%sB" % n

def check_disk():
    templ = "%s,%s/%s,%s,%s"
    for part in psutil.disk_partitions(all=False):
        usage = psutil.disk_usage(part.mountpoint)
        print(templ % (part.mountpoint,
                        bytes2human(usage.used),
                        bytes2human(usage.total),
                        bytes2human(usage.free),
                        int(usage.percent)))

def check_cpu():
    print psutil.cpu_percent(interval=1)


def check_memory():
    print getattr(psutil.phymem_usage(), "percent")
    print getattr(psutil.virtmem_usage(), "percent")

def ifconfig():
    output = subprocess.Popen(['ifconfig'], stdout=subprocess.PIPE).communicate()[0]
    if 'HWaddr' in output:
        mac = output[(output.find('HWaddr')+7):(output.find('HWaddr')+24)]
        ip = output[(output.find('Bcast')-15):(output.find('inet')+22)]
        print 'MAC: ' + mac + ' IP: ' +ip
    else:
        print 'MAC NOT FOUND!'

def uptime():
    uptime = datetime.now() - datetime.fromtimestamp(psutil.BOOT_TIME)
    print "Uptime: %s" % (str(uptime).split('.')[0])

def processcount():
    processcount = {'total': 0, 'running': 0, 'sleeping': 0}
    process_all = [proc for proc in psutil.process_iter()]
    for proc in process_all:
        try:
            if not proc.is_running():
                try:
                    process_all.remove(proc)
                except Exception:
                    pass
        except psutil.error.NoSuchProcess:
            try:
                self.process_all.remove(proc)
            except Exception:
                pass
        else:
            try:
                processcount[str(proc.status)] += 1
            except psutil.error.NoSuchProcess:
                pass
            except KeyError:
                processcount[str(proc.status)] = 1
            finally:
                processcount['total'] += 1
            try:
                process.append(self.__get_process_stats__(proc))
            except Exception:
                pass
    
    print '%s, %s running, %s sleeping' % (str(processcount['total']),
                                        str(processcount['running']),
                                        str(processcount['sleeping']))


def monitor_info(args):
    if args['memory']:
       check_memory()
    elif args['cpu']:
        check_cpu()
    elif args['disk']:
       check_disk()
    elif args['ifconfig']:
       ifconfig() 
    elif args['uptime']:
       uptime()
    elif args['process']:
        processcount()