#!/usr/bin/python26
###
### backmon.commands.mail
###

import sys
import os
import os.path
import glob
import re
import datetime
import pytz
import dateutil
import MySQLdb
import mimetypes

from optparse import OptionParser

from email import encoders
from email.message import Message
from email.mime.audio import MIMEAudio
from email.mime.base import MIMEBase
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

from ...lib import *
from ....dal.builtins import *
from ....datetime import *

import subcommands

SUBCOMMAND_LIST = [
    'test',
    'morning_report',
]

SUBCOMMAND_HELP = {
    'test'                : 'send test email',
    'morning_report'      : 'send morning report',
}

##
## OPTIONS
##
usage = """Usage: %prog [options] mail [subcommand] [options] [arguments]'

  available subcommands:

""" + '\n'.join(['  %-12s       %s' % (cmd, SUBCOMMAND_HELP[cmd]) for cmd in SUBCOMMAND_LIST])

parser = OptionParser(usage=usage)
parser.add_option('-n', '--now', action='store', default='now', help='override now for updates')

def run(args, kwargs):

    #
    # add kwargs to local namespace
    #
    for key in kwargs.keys():

        if re.compile('^[A-Z][A-Z_]+$').match(key):
            exec(key + ' = kwargs[\'' + key + '\']')

    #
    # email settings
    #
    TO      = ', '.join(CONFIG['EMAIL']['DEFAULT']['to']) if type(CONFIG['EMAIL']['DEFAULT']['to']) is list else CONFIG['EMAIL']['DEFAULT']['to']
    FROM    = CONFIG['EMAIL']['DEFAULT']['from']
    CC      = ', '.join(CONFIG['EMAIL']['DEFAULT']['cc']) if type(CONFIG['EMAIL']['DEFAULT']['cc']) is list else CONFIG['EMAIL']['DEFAULT']['cc']
    BCC     = ', '.join(CONFIG['EMAIL']['DEFAULT']['bcc']) if type(CONFIG['EMAIL']['DEFAULT']['bcc']) is list else CONFIG['EMAIL']['DEFAULT']

    DEBUG('')
    DEBUG('TO.................: %s' % (TO))
    DEBUG('FROM...............: %s' % (FROM))
    DEBUG('CC.................: %s' % (CC))
    DEBUG('BCC................: %s' % (BCC))
    DEBUG('')

    #
    # connect to database
    #
    DEBUG('DATABASE_ENGINE....: %s' % (DATABASE_ENGINE))
    DEBUG('DATABASE_NAME......: %s' % (DATABASE_NAME))
    DEBUG('DATABASE_USER......: %s' % (DATABASE_USER))
    DEBUG('DATABASE_PASSWORD..: %s' % (DATABASE_PASSWORD))
    DEBUG('DATABASE_HOST......: %s' % (DATABASE_HOST))
    DEBUG('DATABASE_PORT......: %s' % (DATABASE_PORT))

    try:

        CONN = MySQLdb.connect(host=DATABASE_HOST, user=DATABASE_USER, passwd=DATABASE_PASSWORD, db=DATABASE_NAME)
        DEBUG('Connected to %s database.' % (DATABASE_NAME))

    except Exception, e:

        ERROR('Could not connect to %s database! %s' % (DATABASE_NAME, e))
        sys.exit(1)


    SUBCOMMAND=None
    subcommand_pos = 0

    i = 0

    for arg in args:

        i += 1

        if arg in SUBCOMMAND_LIST:
            SUBCOMMAND = arg
            subcommand_pos = i
            break

    subcommand_args = args[subcommand_pos:]

    if SUBCOMMAND:

        (options, args) = parser.parse_args(args[:subcommand_pos])

        #
        # timestamps
        #
        TZ = pytz.timezone(one_value(CONN.cursor(), "SELECT value FROM settings WHERE name = 'timezone'"))
        UTC = pytz.timezone('UTC')

        BOT = dateutil.parser.parse(one_value(CONN.cursor(), "SELECT value FROM settings WHERE name = 'bot'")).replace(tzinfo=TZ)
        DEBUG('BOT = %s' % (BOT))

        BOT_ISO = BOT.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('BOT_ISO = %s' % (BOT_ISO))

        if options.now == 'now':
            NOW = datetime.datetime.now(TZ)
        else:
            NOW = dateutil.parser.parse(options.now).replace(tzinfo=TZ)

        DEBUG('NOW = %s' % (NOW))

        UTCNOW = NOW.astimezone(UTC)
        DEBUG('UTCNOW = %s' % (UTCNOW))

        UTCNOW_ISO = UTCNOW.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('UTCNOW_ISO = %s' % (UTCNOW_ISO))

        #TODAY = NOW.replace(hour=0, minute=0, second=0, microsecond=0, tzinfo=None)
        TODAY = NOW.replace(hour=0, minute=0, second=0, microsecond=0)
        DEBUG('TODAY = %s' % (TODAY))

        TODAY_ISO = TODAY.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('TODAY_ISO = %s' % (TODAY_ISO))

        TOMORROW = TODAY + datetime.timedelta(days=1)
        DEBUG('TOMORROW = %s' % (TOMORROW))

        TOMORROW_ISO = TOMORROW.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('TOMORROW_ISO = %s' % (TOMORROW_ISO))

        YESTERDAY = TODAY - datetime.timedelta(days=1)
        DEBUG('YESTERDAY = %s' % (YESTERDAY))

        YESTERDAY_ISO = YESTERDAY.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('YESTERDAY_ISO = %s' % (YESTERDAY_ISO))

        CURR_BACKUP_DAY = backup_day(NOW)
        DEBUG('CURR_BACKUP_DAY = %s' % (CURR_BACKUP_DAY))

        CURR_BACKUP_DAY_ISO = CURR_BACKUP_DAY.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('CURR_BACKUP_DAY_ISO = %s' % (CURR_BACKUP_DAY_ISO))

        NEXT_BACKUP_DAY = CURR_BACKUP_DAY + datetime.timedelta(days=1)
        DEBUG('NEXT_BACKUP_DAY = %s' % (NEXT_BACKUP_DAY))

        NEXT_BACKUP_DAY_ISO = NEXT_BACKUP_DAY.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('NEXT_BACKUP_DAY_ISO = %s' % (NEXT_BACKUP_DAY_ISO))

        PREV_BACKUP_DAY = CURR_BACKUP_DAY - datetime.timedelta(days=1)
        DEBUG('PREV_BACKUP_DAY = %s' % (PREV_BACKUP_DAY))

        PREV_BACKUP_DAY_ISO = PREV_BACKUP_DAY.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('PREV_BACKUP_DAY_ISO = %s' % (PREV_BACKUP_DAY_ISO))

        TIMESTAMP = NOW.replace(second=0, microsecond=0)
        DEBUG('TIMESTAMP = %s' % (TIMESTAMP))

        TIMESTAMP_ISO = TIMESTAMP.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('TIMESTAMP_ISO = %s' % (TIMESTAMP_ISO))

        UTCTIMESTAMP = UTCNOW.replace(second=0, microsecond=0)
        DEBUG('UTCTIMESTAMP = %s' % (UTCTIMESTAMP))

        UTCTIMESTAMP_ISO = UTCTIMESTAMP.strftime('%Y-%m-%d %H:%M:%S')
        DEBUG('UTCTIMESTAMP_ISO = %s' % (UTCTIMESTAMP_ISO))


    #
    # SUBCOMMAND
    #
    if( not SUBCOMMAND ):
        parser.print_help()
        sys.exit(1)

    DEBUG('SUBCOMMAND=%s' % (SUBCOMMAND))

    if hasattr(subcommands, SUBCOMMAND):
        exec 'subcommands.' + SUBCOMMAND + '.run(subcommand_args, locals())'
    else:
        ERROR('Invalid subcommand \'%s\'.' % (SUBCOMMAND))