import os

from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email import encoders

import smtplib
import types

import RS.Config


SUPPORTED_TEXT_ATTACHMENTS = [ 'xml', 'ulog', 'txt', 'ms', 'py', 'ini', 'log' ]
SUPPORTED_IMAGE_ATTACHMENTS = [ 'png', 'tga', 'jpg', 'bmp' ]

def Send( emailFrom, emailTo, emailSubject, emailBody, asHtml = False, attachments = [] ):
    '''
    Sends an email using the exchange server found in the project module.
    '''
    global SUPPORTED_IMAGE_ATTACHMENTS
    global SUPPORTED_TEXT_ATTACHMENTS
    
    toStr = ''
    
    if not type( emailTo ) == types.ListType and not type( emailTo ) == types.TupleType:
        emailTo = [ emailTo ]
                    
    for emailAddress in emailTo:
        toStr += emailAddress + ';'

    message = MIMEMultipart( 'alternative' )
    message[ 'Subject' ] = '{0}'.format( emailSubject )
    message[ 'To' ] = toStr
    message[ 'From' ] = emailFrom  

    if asHtml:
        body = MIMEText( emailBody, 'html' )
        
    else:
        body = MIMEText( emailBody )
        
    message.attach( body )
    
    for attachment in attachments:
        if os.path.isfile( attachment ):
            fileType = str( attachment ).split( '.' )[ -1 ].lower()
            
            if fileType in SUPPORTED_TEXT_ATTACHMENTS:
                part = MIMEBase( 'application', 'octet-stream' )
                part.set_payload( open( attachment, 'r' ).read() )
                encoders.encode_base64( part )
                part.add_header( 'Content-Disposition', 'attachment; filename={0}'.format( os.path.basename( attachment ) ) )
                message.attach( part )
                
            elif fileType in SUPPORTED_IMAGE_ATTACHMENTS:
                part = MIMEBase( 'application', 'octet-stream' )
                part.set_payload( open( attachment, 'rb' ).read() )
                encoders.encode_base64( part )
                part.add_header( 'Content-Disposition', 'attachment; filename={0}'.format( os.path.basename( attachment ) ) )
                message.attach( part )
                
            else:
                print 'The attachment file type ({0}) is not supported!  You will need to add the file type as a supported type to this module.'.format( fileType )
                
        else:
            print 'Could not attach file ({0}) because it does not exist!'.format( attachment )
    
    try:
        server = smtplib.SMTP( RS.Config.User.ExchangeServer )
        server.sendmail( emailFrom, emailTo, message.as_string() )
        server.quit()
        
    except:
        print 'Could not send the email!'