import smtplib
from os.path import basename
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate


def send_mail(send_from, send_to, subject, text, cc=[], bcc=[], files=None):
    assert isinstance(send_to, list)

    gmail_user = 'redacted'
    gmail_password = 'redacted'

    msg = MIMEMultipart('alternative')
    msg['From'] = send_from
    msg['To'] = COMMASPACE.join(send_to)
    msg['Cc'] = COMMASPACE.join(cc)
    msg['Bcc'] = COMMASPACE.join(bcc)
    msg['Date'] = formatdate(localtime=True)
    msg['Subject'] = subject

    msg.attach(MIMEText(text, 'html'))

    for f in files or []:
        with open(f, "rb") as fil:
            if f.endswith('.pdf'):
                part = MIMEApplication(
                    fil.read(),
                    _subtype = "pdf",
                    Name=basename(f)
                )
            else:
                part = MIMEApplication(
                fil.read(),
                Name=basename(f)
            )
        part['Content-Disposition'] = 'attachment; filename="%s"' % basename(f)
        msg.attach(part)


    smtp = smtplib.SMTP_SSL('smtp.gmail.com', 465)
    smtp.ehlo()
    smtp.login(gmail_user, gmail_password)
    smtp.sendmail(send_from, send_to+cc+bcc, msg.as_bytes())
    smtp.close()