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parallel-library/cps/helper.py

178 lines
5.9 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from cps import db, ub
from cps import config
from flask import current_app as app
import smtplib
import sys
import os
import traceback
import re
import unicodedata
from StringIO import StringIO
from email import encoders
from email.MIMEBase import MIMEBase
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.generator import Generator
import subprocess
def update_download(book_id, user_id):
check = ub.session.query(ub.Downloads).filter(ub.Downloads.user_id == user_id).filter(ub.Downloads.book_id == book_id).first()
if not check:
new_download = ub.Downloads(user_id=user_id, book_id=book_id)
ub.session.add(new_download)
ub.session.commit()
def make_mobi(book_id):
kindlegen = os.path.join(config.MAIN_DIR, "vendor", "kindlegen")
if not os.path.exists(kindlegen):
app.logger.error("make_mobi: kindlegen binary not found in: %s" % kindlegen)
return None
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
data = db.session.query(db.Data).filter(db.Data.book == book.id).filter(db.Data.format == 'EPUB').first()
if not data:
app.logger.error("make_mobi: epub format not found for book id: %d" % book_id)
return None
file_path = os.path.join(config.DB_ROOT, book.path, data.name)
if os.path.exists(file_path + ".epub"):
check = subprocess.call([kindlegen, file_path + ".epub"], stdout=subprocess.PIPE)
if not check or check < 2:
book.data.append(db.Data(
name=book.data[0].name,
format="MOBI",
book=book.id,
uncompressed_size=os.path.getsize(file_path + ".mobi")
))
db.session.commit()
return file_path + ".mobi"
else:
app.logger.error("make_mobi: kindlegen failed with error while converting book")
return None
else:
app.logger.error("make_mobie: epub not found: %s.epub" % file_path)
return None
def send_mail(book_id, kindle_mail):
'''Send email with attachments'''
is_mobi = False
is_azw = False
is_azw3 = False
is_epub = False
is_pdf = False
file_path = None
settings = ub.get_mail_settings()
# create MIME message
msg = MIMEMultipart()
msg['From'] = settings["mail_from"]
msg['To'] = kindle_mail
msg['Subject'] = 'Send to Kindle'
text = 'This email has been sent via calibre web.'
msg.attach(MIMEText(text))
use_ssl = settings.get('mail_use_ssl', 0)
# attach files
#msg.attach(self.get_attachment(file_path))
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
data = db.session.query(db.Data).filter(db.Data.book == book.id)
formats = {}
for entry in data:
if entry.format == "MOBI":
formats["mobi"] = os.path.join(config.DB_ROOT, book.path, entry.name + ".mobi")
if entry.format == "EPUB":
formats["epub"] = os.path.join(config.DB_ROOT, book.path, entry.name + ".epub")
if entry.format == "PDF":
formats["pdf"] = os.path.join(config.DB_ROOT, book.path, entry.name + ".pdf")
if len(formats) == 0:
return "Could not find any formats suitable for sending by email"
if 'mobi' in formats:
msg.attach(get_attachment(formats['mobi']))
elif 'epub' in formats:
filepath = make_mobi(book.id)
if filepath is not None:
msg.attach(get_attachment(filepath))
elif 'pdf' in formats:
msg.attach(get_attachment(formats['pdf']))
elif 'pdf' in formats:
msg.attach(get_attachment(formats['pdf']))
else:
return "Could not find any formats suitable for sending by email"
# convert MIME message to string
fp = StringIO()
gen = Generator(fp, mangle_from_=False)
gen.flatten(msg)
msg = fp.getvalue()
# send email
try:
mailserver = smtplib.SMTP(settings["mail_server"],settings["mail_port"])
mailserver.set_debuglevel(0)
if int(use_ssl) == 1:
mailserver.ehlo()
mailserver.starttls()
mailserver.ehlo()
mailserver.login(settings["mail_login"], settings["mail_password"])
mailserver.sendmail(settings["mail_login"], kindle_mail, msg)
mailserver.quit()
except (socket.error, smtplib.SMTPRecipientsRefused, smtplib.SMTPException), e:
app.logger.error(traceback.print_exc())
return "Failed to send mail: %s" % str(e)
return None
def get_attachment(file_path):
'''Get file as MIMEBase message'''
try:
file_ = open(file_path, 'rb')
attachment = MIMEBase('application', 'octet-stream')
attachment.set_payload(file_.read())
file_.close()
encoders.encode_base64(attachment)
attachment.add_header('Content-Disposition', 'attachment',
filename=os.path.basename(file_path))
return attachment
except IOError:
traceback.print_exc()
message = ('The requested file could not be read. Maybe wrong '
'permissions?')
return None
def get_valid_filename(value):
"""
Returns the given string converted to a string that can be used for a clean
filename. Limits num characters to 128 max.
"""
value = value[:128]
re_slugify = re.compile('[^\w\s-]', re.UNICODE)
value = unicodedata.normalize('NFKD', value)
re_slugify = re.compile('[^\w\s-]', re.UNICODE)
value = unicode(re_slugify.sub('', value).strip())
value = re.sub('[\s]+', '_', value, flags=re.U)
return value
def get_normalized_author(value):
"""
Normalizes sorted author name
"""
value = unicodedata.normalize('NFKD', value)
value = re.sub('[^\w,\s]', '', value, flags=re.U)
value = " ".join(value.split(", ")[::-1])
return value