#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import config
import fstools
import json
import logging
import mail
import os
import psutil
import report
import signal
import time

CYCLE_TIME = 60
SLEEP_TIME = .5

logger = logging.getLogger('root')
report.stdoutLoggingConfigure(log_name_lvl=[('root', config.LOG_LEVEL), ])


class GracefulKiller:
  kill_now = False
  def __init__(self):
    signal.signal(signal.SIGINT, self.exit_gracefully)
    signal.signal(signal.SIGTERM, self.exit_gracefully)

  def exit_gracefully(self, signum, frame):
    self.kill_now = True


def file2mail():
    # Scan for files to send
    for filename in fstools.filelist(config.TARGET_FOLDER):
        logger.info("Found %s to send via E-Mail to %s.", filename, config.SEND_TO)
        # Send File as E-Mail
        try:
            mail.send_mail(
                config.SEND_FROM,
                config.SEND_TO,
                "Gesanntes Dokument - %s" % os.path.basename(filename),
                "Hier ist das gescannte Dokument vom Scanner in Buchen:",
                files=[filename],
                server=config.SMTP_SERVER,
                username=config.SMTP_USER,
                password=config.SMTP_PASSWORD
            )
        except Exception:
            logger.exception("Exception while sending an E-Mail")
        else:
            # Remove file
            logger.debug("Removing file %s", filename)
            os.remove(filename)


if __name__ == '__main__':
  killer = GracefulKiller()
  i = 0
  while not killer.kill_now:
    time.sleep(.5)
    if i >= CYCLE_TIME / SLEEP_TIME:
        file2mail()
        i = 0
    else:
        i += 1