import time
import subprocess
# import StringIO
import re
# from wol import *
# import os
# import signal
import smtplib
from email.MIMEText import MIMEText
from HTMLParser import HTMLParser


def sendTextMail(strFrom, to, strSubject, text):
    # from = "SimpaCluster <guillaume.raffy@univ-rennes1.fr>"
    mail = MIMEText(text)
    mail['From'] = strFrom
    mail['Subject'] = strSubject
    mail['To'] = to
    smtp = smtplib.SMTP('smtp.univ-rennes1.fr', 25)
    # smtp.connect()
    # smtp.login('guillaume.raffy@univ-rennes1.fr', 'password')
    smtp.sendmail(strFrom, [to], mail.as_string())
    smtp.close()


class Error(Exception):
    def __init__(self, strMessage):
        self.m_strMessage = strMessage
    

def getHostName():
    (returnCode, stdout, stderr) = executeProgram(['hostname', '-s'])
    if returnCode != 0:
        raise Error(stderr)
    strHostName = re.sub(r"\n", "", stdout)
    return strHostName


def log(message):
    print time.asctime(time.localtime()) + ' : ' + message


def executeProgram(astrArguments):
    # log('executeProgram : program [%s]' % (','.join(astrArguments)))
    popen = subprocess.Popen( astrArguments, bufsize=1, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)  # bufsize=1 seems to prevent deadlocks that happen 50% the time
    stdout, stderr = popen.communicate()
    # popen.wait()
    result = (popen.returncode, stdout, stderr)
    # log('executeProgram : command %s popen.pid = %d' % (astrArguments[0], popen.pid))
    # os.kill(popen.pid, signal.SIGTERM)
    return result


def executeCommand(command):
    """
        executes the shell command such as 'set x=1; myprog $x'
    """
    popen = subprocess.Popen( [command], bufsize=1, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, executable='/bin/bash')  # bufsize=1 seems to prevent deadlocks that happen 50% the time
    # if we don't specify the optional executable argument, then the default non interactive shell will be used. On debian, the default non-interactive shell is dash, which doesn't understand the keyword 'source' that we use in many places
    stdout, stderr = popen.communicate()
    # popen.wait()
    result = (popen.returncode, stdout, stderr)
    return result


def executeCommandOn(target_machine_fqdn, command, user=None):
    """
    execute command on a local or remote machine (using ssh then)
    :param str user: if not None, the user that should be used to execute the command (instead of the current user)
    """
    print("comparing %s and %s" % (getHostName(), target_machine_fqdn.split('.')[0]))
    if getHostName() == target_machine_fqdn.split('.')[0]:
        if user is not None:
            # su -c "ls -l /tmp" graffy
            return executeCommand("su -c '%s' %s" % (command, user))
        else:
            return executeCommand(command)
    else:
        if user is not None:
            target = '%s@%s' % (user, target_machine_fqdn)
        else:
            target = target_machine_fqdn
        
        return executeProgram(['ssh', target, "%s" % command])


def getUpsStatus():
    
    class MyHTMLParser(HTMLParser):
        def __init__(self):
            HTMLParser.__init__(self)
            self.TokenList = []
            
        def handle_data( self, data):
            data = data.strip()
            if data and len(data) > 0:
                self.TokenList.append(data)
                # print data
                
        def GetTokenList(self):
            return self.TokenList
    import urllib2
    
    try:
        url = 'http://Net Vision:public@129.20.27.119/PageMonComprehensive.html'
        f = urllib2.urlopen(url)
        res = f.read()
        f.close()
    except:
        print "bad read"
        return
    h = MyHTMLParser()
    h.feed(res)
    tokensList = h.GetTokenList()  # @UnusedVariable

if __name__ == '__main__':
    from SimpaDbUtil import wakeUp
    """
    for i in range(30):
        machineName = 'simpatix%d' % (i+10)
        print 'lom ip of %s is %s' % (machineName, getLightOutManagementIpAddress(machineName))
    """
    wakeUp('simpatix21')
    # print putToSleep('simpatix13')
    # print isNonRespondingMachineSleeping('simpatix13')