#!/usr/bin/env python
# -*- coding: utf-8 -*-

import mimetypes
import logging
from logging.handlers import RotatingFileHandler
import textwrap
mimetypes.add_type('application/xhtml+xml','.xhtml')
from flask import Flask, render_template, session, request, Response, redirect, url_for, send_from_directory, make_response, g, flash, abort
import db, config, ub, helper
import os
import errno
from sqlalchemy.sql.expression import func
from sqlalchemy.sql.expression import false
from sqlalchemy.exc import IntegrityError
from math import ceil
from flask_login import LoginManager, login_user, logout_user, login_required, current_user, AnonymousUserMixin
from flask_principal import Principal, Identity, AnonymousIdentity, identity_changed
from flask_babel import Babel
from flask_babel import gettext as _
import requests, zipfile
from werkzeug.security import generate_password_hash, check_password_hash
from babel import Locale as LC
from babel import negotiate_locale
from functools import wraps
import base64
from sqlalchemy.sql import *
import json
import urllib
import datetime
from iso639 import languages as isoLanguages
from uuid import uuid4
import os.path
import shutil
import re
try:
    from wand.image import Image
    use_generic_pdf_cover = False
except ImportError, e:
    use_generic_pdf_cover = True

from shutil import copyfile
from cgi import escape

class ReverseProxied(object):
    '''Wrap the application in this middleware and configure the 
    front-end server to add these headers, to let you quietly bind 
    this to a URL other than / and to an HTTP scheme that is 
    different than what is used locally.

    Code courtesy of: http://flask.pocoo.org/snippets/35/

    In nginx:
    location /myprefix {
        proxy_pass http://127.0.0.1:8083;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
        proxy_set_header X-Script-Name /myprefix;
        }
    '''
    def __init__(self, app):
        self.app = app

    def __call__(self, environ, start_response):
        script_name = environ.get('HTTP_X_SCRIPT_NAME', '')
        if script_name:
            environ['SCRIPT_NAME'] = script_name
            path_info = environ.get('PATH_INFO', '')
            if path_info and path_info.startswith(script_name):
                environ['PATH_INFO'] = path_info[len(script_name):]

        scheme = environ.get('HTTP_X_SCHEME', '')
        if scheme:
            environ['wsgi.url_scheme'] = scheme
        server = environ.get('HTTP_X_FORWARDED_SERVER', '')
        if server:
            environ['HTTP_HOST'] = server
        return self.app(environ, start_response)

app = (Flask(__name__))
app.wsgi_app = ReverseProxied(app.wsgi_app)

formatter = logging.Formatter(
    "[%(asctime)s] {%(pathname)s:%(lineno)d} %(levelname)s - %(message)s")
file_handler = RotatingFileHandler(os.path.join(config.LOG_DIR, "calibre-web.log"), maxBytes=10000, backupCount=1)
file_handler.setLevel(logging.INFO)
file_handler.setFormatter(formatter)
app.logger.addHandler(file_handler)
app.logger.info('Starting Calibre Web...')
logging.getLogger("book_formats").addHandler(file_handler)
logging.getLogger("book_formats").setLevel(logging.INFO)


Principal(app)

babel = Babel(app)


class Anonymous(AnonymousUserMixin):
    def __init__(self):
        self.nickname = 'Guest'
        self.role = -1
    def role_admin(self):
        return False
    def role_download(self):
        return False
    def role_upload(self):
        return False
    def role_edit(self):
        return False
    def filter_language(self):
        return 'all'
    def show_random_books(self):
        return True
    def show_hot_books(self):
        return True
    def show_series(self):
        return True
    def show_category(self):
        return True
    def show_language(self):
        return True
    def is_anonymous(self):
        return config.ANON_BROWSE


lm = LoginManager(app)
lm.init_app(app)
lm.login_view = 'login'
lm.anonymous_user = Anonymous

app.secret_key = 'A0Zr98j/3yX R~XHH!jmN]LWX/,?RT'

LANGUAGES = {
    'en': 'English',
    'de': 'Deutsch'
}

@babel.localeselector
def get_locale():
    # if a user is logged in, use the locale from the user settings
    user = getattr(g, 'user', None)
    if user is not None and hasattr(user, "locale"):
         return user.locale
    preferred = [x.replace('-', '_') for x in request.accept_languages.values()]
    return negotiate_locale(preferred, LANGUAGES.keys())

@babel.timezoneselector
def get_timezone():
    user = getattr(g, 'user', None)
    if user is not None:
        return user.timezone

@lm.user_loader
def load_user(id):
    return ub.session.query(ub.User).filter(ub.User.id == int(id)).first()


@lm.header_loader
def load_user_from_header(header_val):
    if header_val.startswith('Basic '):
        header_val = header_val.replace('Basic ', '', 1)
    try:
        header_val = base64.b64decode(header_val)
        basic_username = header_val.split(':')[0]
        basic_password = header_val.split(':')[1]
    except TypeError:
        pass
    user = ub.session.query(ub.User).filter(ub.User.nickname == basic_username).first()
    if user and check_password_hash(user.password, basic_password):
        return user
    return

def check_auth(username, password):
    user = ub.session.query(ub.User).filter(ub.User.nickname == username).first()
    if user and check_password_hash(user.password, password):
        return True
    else:
        return False

def authenticate():
    return Response(
    'Could not verify your access level for that URL.\n'
    'You have to login with proper credentials', 401,
    {'WWW-Authenticate': 'Basic realm="Login Required"'})

def requires_basic_auth_if_no_ano(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        auth = request.authorization
        if config.ANON_BROWSE != 1:
            if not auth or not check_auth(auth.username, auth.password):
                return authenticate()
        return f(*args, **kwargs)
    return decorated

#simple pagination for the feed
class Pagination(object):

    def __init__(self, page, per_page, total_count):
        self.page = page
        self.per_page = per_page
        self.total_count = total_count

    @property
    def pages(self):
        return int(ceil(self.total_count / float(self.per_page)))

    @property
    def has_prev(self):
        return self.page > 1

    @property
    def has_next(self):
        return self.page < self.pages

    def iter_pages(self, left_edge=2, left_current=2,
                   right_current=5, right_edge=2):
        last = 0
        for num in xrange(1, self.pages + 1):
            if num <= left_edge or \
               (num > self.page - left_current - 1 and \
                num < self.page + right_current) or \
               num > self.pages - right_edge:
                if last + 1 != num:
                    yield None
                yield num
                last = num

##pagination links in jinja
def url_for_other_page(page):
    args = request.view_args.copy()
    args['page'] = page
    return url_for(request.endpoint, **args)

app.jinja_env.globals['url_for_other_page'] = url_for_other_page

def login_required_if_no_ano(func):
    if config.ANON_BROWSE == 1:
        return func
    return login_required(func)

## custom jinja filters
@app.template_filter('shortentitle')
def shortentitle_filter(s):
    if len(s) > 60:
        s = s.split(':', 1)[0]
        if len(s) > 60:
            s = textwrap.wrap(s, 60, break_long_words=False)[0]+' [...]'
    return s

def admin_required(f):
    """
    Checks if current_user.role == 1
    """
    @wraps(f)
    def inner(*args, **kwargs):
        if current_user.role_admin():
            return f(*args, **kwargs)
        abort(403)
    return inner

def download_required(f):
    @wraps(f)
    def inner(*args, **kwargs):
        if current_user.role_download() or current_user.role_admin():
            return f(*args, **kwargs)
        abort(403)
    return inner
def upload_required(f):
    @wraps(f)
    def inner(*args, **kwargs):
        if current_user.role_upload() or current_user.role_admin():
            return f(*args, **kwargs)
        abort(403)
    return inner
def edit_required(f):
    @wraps(f)
    def inner(*args, **kwargs):
        if current_user.role_edit() or current_user.role_admin():
            return f(*args, **kwargs)
        abort(403)
    return inner

# Fill indexpage with all requested data from database
def fill_indexpage(page,database, db_filter, order) :
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter= True
    if current_user.show_random_books():
        random = db.session.query(db.Books).filter(filter).order_by(func.random()).limit(config.RANDOM_BOOKS)
    else :
        random = false
    off = int(int(config.NEWEST_BOOKS) * (page-1))
    pagination = Pagination(page, config.NEWEST_BOOKS, len(db.session.query(database).filter(db_filter).filter(filter).all()))
    entries = db.session.query(database).filter(db_filter).filter(filter).order_by(order).offset(off).limit(config.NEWEST_BOOKS)
    return entries, random, pagination




def modify_database_object(input_elements, db_book_object, db_object, db_session,type):
    input_elements = [x for x in input_elements if x != '']
    # we have all input element (authors, series, tags) names now
    # 1. search for elements to remove
    del_elements = []
    for c_elements in db_book_object:
        found = False
        for inp_element in input_elements:
            if inp_element == c_elements.name:
                found = True
                break;
        # if the element was not found in the new list, add it to remove list
        if not found:
            del_elements.append(c_elements)
    # 2. search for elements that need to be added
    add_elements = []
    for inp_element in input_elements:
        found = False
        for c_elements in db_book_object:
            if inp_element == c_elements.name:
                found = True
                break;
        if not found:
            add_elements.append(inp_element)
    # if there are elements to remove, we remove them now
    if len(del_elements) > 0:
        for del_element in del_elements:
            db_book_object.remove(del_element)
            if len(del_element.books) == 0:
                db_session.delete(del_element)
    # if there are elements to add, we add them now!
    if len(add_elements) > 0:
        if type == 'languages':
            db_filter=db_object.lang_code
        else:
            db_filter=db_object.name
        for add_element in add_elements:
            # check if a element with that name exists
            new_element = db_session.query(db_object).filter(db_filter == add_element).first()
            # if no element is found add it
            if new_element == None:
                if type=='author':
                    new_element = db_object(add_element, add_element, "")
                else:
                    if type=='series':
                        new_element = db_object(add_element, add_element)
                    else:       # type should be tag, or languages
                        new_element = db_object(add_element)
                db_session.add(new_element)
                new_element = db.session.query(db_object).filter(db_filter == add_element).first()
            # add element to book
            db_book_object.append(new_element)


@app.before_request
def before_request():
    g.user = current_user
    g.public_shelfes = ub.session.query(ub.Shelf).filter(ub.Shelf.is_public == 1).all()
    g.allow_registration = config.PUBLIC_REG
    g.allow_upload = config.UPLOADING

@app.route("/feed")
@requires_basic_auth_if_no_ano
def feed_index():
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    xml = render_template('index.xml')
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/osd")
@requires_basic_auth_if_no_ano
def feed_osd():
    xml = render_template('osd.xml')
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/search", methods=["GET"])
@requires_basic_auth_if_no_ano
def feed_search():
    term = request.args.get("query").strip()
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if term:
        entries = db.session.query(db.Books).filter(db.or_(db.Books.tags.any(db.Tags.name.like("%"+term+"%")),db.Books.authors.any(db.Authors.name.like("%"+term+"%")),db.Books.title.like("%"+term+"%"))).filter(filter).all()

        xml = render_template('feed.xml', searchterm=term, entries=entries, Last_Updated=Last_Updated)
    else:
        xml = render_template('feed.xml', searchterm="")
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/new")
@requires_basic_auth_if_no_ano
def feed_new():
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter= True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(filter).order_by(db.Books.last_modified.desc()).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', entries=entries, next_url="/feed/new?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response


@app.route("/feed/discover")
@requires_basic_auth_if_no_ano
def feed_discover():
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(filter).order_by(func.random()).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', entries=entries, next_url="/feed/discover?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response = make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/hot")
@requires_basic_auth_if_no_ano
def feed_hot():
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(filter).filter(db.Books.ratings.any(db.Ratings.rating > 9)).offset(off).limit(config.NEWEST_BOOKS)

    xml = render_template('feed.xml', entries=entries, next_url="/feed/hot?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/author")
@requires_basic_auth_if_no_ano
def feed_authorindex():
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    authors = db.session.query(db.Authors).order_by(db.Authors.sort).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', authors=authors,next_url="/feed/author?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/author/<name>")
@requires_basic_auth_if_no_ano
def feed_author(name):
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(db.Books.authors.any(db.Authors.name.like("%" + name + "%"))).filter(
            filter).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', entries=entries,next_url="/feed/author?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response


@app.route("/feed/category")
@requires_basic_auth_if_no_ano
def feed_categoryindex():
    off = request.args.get("start_index")
    if not off:
        off=0
    entries = db.session.query(db.Tags).order_by(db.Tags.name).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', categorys=entries, next_url="/feed/category?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response


@app.route("/feed/category/<name>")
@requires_basic_auth_if_no_ano
def feed_category(name):
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(db.Books.tags.any(db.Tags.name.like("%" + name + "%"))).order_by(
        db.Books.last_modified.desc()).filter(filter).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', entries=entries, next_url="/feed/category?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response

@app.route("/feed/series")
@requires_basic_auth_if_no_ano
def feed_seriesindex():
    off = request.args.get("start_index")
    if not off:
        off=0
    entries = db.session.query(db.Series).order_by(db.Series.name).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', series=entries, next_url="/feed/series?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response


@app.route("/feed/series/<name>")
@requires_basic_auth_if_no_ano
def feed_series(name):
    off = request.args.get("start_index")
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if not off:
        off=0
    entries = db.session.query(db.Books).filter(db.Books.series.any(db.Series.name.like("%" + name + "%"))).order_by(
        db.Books.last_modified.desc()).filter(filter).offset(off).limit(config.NEWEST_BOOKS)
    xml = render_template('feed.xml', entries=entries, next_url="/feed/series?start_index=%d" % (int(config.NEWEST_BOOKS) + int(off)))
    response= make_response(xml)
    response.headers["Content-Type"] = "application/xml"
    return response


@app.route("/feed/download/<int:book_id>/<format>")
@requires_basic_auth_if_no_ano
@download_required
def get_opds_download_link(book_id, format):
    format = format.split(".")[0]
    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 == format.upper()).first()
    helper.update_download(book_id, int(current_user.id))
    author = helper.get_normalized_author(book.author_sort)
    file_name = book.title
    if len(author) > 0:
        file_name = author+'-'+file_name
    file_name = helper.get_valid_filename(file_name)
    response = make_response(send_from_directory(os.path.join(config.DB_ROOT, book.path), data.name + "." +format))
    response.headers["Content-Disposition"] = "attachment; filename=%s.%s" % (data.name, format)
    return response
    
@app.route("/get_authors_json", methods = ['GET', 'POST'])
@login_required_if_no_ano
def get_authors_json(): 
    if request.method == "GET":
        query = request.args.get('q')
        entries = db.session.execute("select name from authors where name like '%" + query + "%'")
        json_dumps = json.dumps([dict(r) for r in entries])
        return json_dumps

@app.route("/get_tags_json", methods = ['GET', 'POST'])
@login_required_if_no_ano
def get_tags_json(): 
    if request.method == "GET":
        query = request.args.get('q')
        entries = db.session.execute("select name from tags where name like '%" + query + "%'")
        json_dumps = json.dumps([dict(r) for r in entries])
        return json_dumps

@app.route("/get_languages_json", methods = ['GET', 'POST'])
@login_required_if_no_ano
def get_languages_json():
    if request.method == "GET":
        query = request.args.get('q').lower()
        # entries = db.session.execute("select lang_code from languages where lang_code like '%" + query + "%'")
        languages = db.session.query(db.Languages).all()
        for lang in languages:
            try:
                cur_l = LC.parse(lang.lang_code)
                lang.name = cur_l.get_language_name(get_locale())
            except:
                lang.name=_(isoLanguages.get(part3=lang.lang_code).name)

        entries = [s for s in languages if query in s.name.lower()]
        json_dumps = json.dumps([dict(name=r.name) for r in entries])
        return json_dumps

@app.route("/get_series_json", methods = ['GET', 'POST'])
@login_required_if_no_ano
def get_series_json(): 
    if request.method == "GET":
        query = request.args.get('q')
        entries = db.session.execute("select name from series where name like '%" + query + "%'")
        json_dumps = json.dumps([dict(r) for r in entries])
        return json_dumps
        
@app.route("/get_matching_tags", methods = ['GET', 'POST'])
@login_required_if_no_ano
def get_matching_tags(): 
    tag_dict = {'tags': []}
    if request.method == "GET":
        q = db.session.query(db.Books)
        author_input = request.args.get('author_name')
        title_input = request.args.get('book_title')
        include_tag_inputs = request.args.getlist('include_tag')
        exclude_tag_inputs = request.args.getlist('exclude_tag')
        q = q.filter(db.Books.authors.any(db.Authors.name.like("%" +  author_input + "%")), db.Books.title.like("%"+title_input+"%"))
        if len(include_tag_inputs) > 0:
            for tag in include_tag_inputs:
                q = q.filter(db.Books.tags.any(db.Tags.id == tag))
        if len(exclude_tag_inputs) > 0:
            for tag in exclude_tag_inputs:
                q = q.filter(not_(db.Books.tags.any(db.Tags.id == tag)))
        for book in q:
            for tag in book.tags:
                if tag.id not in tag_dict['tags']:
                    tag_dict['tags'].append(tag.id)
    json_dumps = json.dumps(tag_dict)
    return json_dumps

@app.route("/", defaults={'page': 1})
@app.route('/page/<int:page>')
@login_required_if_no_ano
def index(page):
    entries, random, pagination =fill_indexpage(page,db.Books,True, db.Books.last_modified.desc())
    return render_template('index.html', random=random, entries=entries, pagination=pagination, title=_(u"Latest Books"))

@app.route("/hot", defaults={'page': 1})
@app.route('/hot/page/<int:page>')
@login_required_if_no_ano
def hot_books(page):
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if current_user.show_random_books():
        random = db.session.query(db.Books).filter(filter).order_by(func.random()).limit(config.RANDOM_BOOKS)
    else :
        random = false
    off = int(int(config.NEWEST_BOOKS) * (page - 1))
    all_books = ub.session.query(ub.Downloads, ub.func.count(ub.Downloads.book_id)).order_by(ub.func.count(ub.Downloads.book_id).desc()).group_by(ub.Downloads.book_id)
    hot_books = all_books.offset(off).limit(config.NEWEST_BOOKS)
    entries = list()
    for book in hot_books:
        entries.append(db.session.query(db.Books).filter(filter).filter(db.Books.id == book.Downloads.book_id).first())
    numBooks = entries.__len__()
    pagination = Pagination(page, config.NEWEST_BOOKS, numBooks)
    return render_template('index.html', random=random, entries=entries, pagination=pagination, title=_(u"Hot Books (most downloaded)"))

@app.route("/discover", defaults={'page': 1})
@app.route('/discover/page/<int:page>')
@login_required_if_no_ano
def discover(page):
    entries, random, pagination = fill_indexpage(page, db.Books, func.randomblob(2),db.Books.last_modified.desc())
    return render_template('discover.html', entries=entries, pagination=pagination, title=_(u"Random Books"))

@app.route("/author")
@login_required_if_no_ano
def author_list():
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    entries= db.session.query(db.Authors,func.count('books_authors_link.book').label('count')).join(db.books_authors_link).join(db.Books).filter(
        filter).group_by('books_authors_link.author').order_by(db.Authors.sort).all()
    return render_template('list.html', entries=entries, folder='author', title=_(u"Author list"))


@app.route("/author/<name>")
@login_required_if_no_ano
def author(name):
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    if current_user.show_random_books():
        random = db.session.query(db.Books).filter(filter).order_by(func.random()).limit(config.RANDOM_BOOKS)
    else:
        random = false

    entries = db.session.query(db.Books).filter(db.Books.authors.any(db.Authors.name.like("%" +  name + "%"))).filter(filter).all()
    return render_template('index.html', random=random, entries=entries, title=_(u"Author: %(nam)s",nam=name))

@app.route("/series")
@login_required_if_no_ano
def series_list():
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    entries= db.session.query(db.Series,func.count('books_series_link.book').label('count')).join(db.books_series_link).join(db.Books).filter(
        filter).group_by('books_series_link.series').order_by(db.Series.sort).all()
    return render_template('list.html', entries=entries, folder='series', title=_(u"Series list"))

@app.route("/series/<name>/", defaults={'page': 1})
@app.route("/series/<name>/<int:page>'")
@login_required_if_no_ano
def series(name,page):
    entries, random, pagination = fill_indexpage(page, db.Books, db.Books.series.any(db.Series.name == name  ), db.Books.series_index)
    if entries :
        return render_template('index.html', random=random, pagination=pagination, entries=entries, title=_(u"Series: %(serie)s",serie=name))
    else :
        flash(_(u"Error opening eBook. File does not exist or file is not accessible:"), category="error")
        return redirect('/' or url_for("index", _external=True))

@app.route("/language")
@login_required_if_no_ano
def language_overview():
    if current_user.filter_language() == u"all":
        languages = db.session.query(db.Languages).all()
        for lang in languages:
            try:
                cur_l = LC.parse(lang.lang_code)
                lang.name = cur_l.get_language_name(get_locale())
            except:
                lang.name=_(isoLanguages.get(part3=lang.lang_code).name)
    else :
        try:
            langfound=1
            cur_l = LC.parse(current_user.filter_language())
        except:
            langfound=0
        languages = db.session.query(db.Languages).filter(db.Languages.lang_code == current_user.filter_language()).all()
        if langfound:
            languages[0].name = cur_l.get_language_name(get_locale())
        else :
            languages[0].name=_(isoLanguages.get(part3=languages[0].lang_code).name)
    lang_counter =db.session.query(db.books_languages_link,func.count('books_languages_link.book').label('bookcount')).group_by('books_languages_link.lang_code').all()
    return render_template('languages.html', languages=languages, lang_counter=lang_counter,  title=_(u"Available languages"))

@app.route("/language/<name>",defaults={'page': 1})
@app.route('/language/<name>/page/<int:page>')
@login_required_if_no_ano
def language(name,page):
    entries, random, pagination = fill_indexpage(page, db.Books, db.Books.languages.any(db.Languages.lang_code == name ), db.Books.last_modified.desc())
    try:
        cur_l = LC.parse(name)
        name = cur_l.get_language_name(get_locale())
    except:
        name = _(isoLanguages.get(part3=name).name)
    return render_template('index.html', random=random, entries=entries,  pagination=pagination, title=_(u"Language: %(name)s", name=name))

@app.route("/category")
@login_required_if_no_ano
def category_list():
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    entries= db.session.query(db.Tags,func.count('books_tags_link.book').label('count')).join(db.books_tags_link).join(db.Books).filter(
        filter).group_by('books_tags_link.tag').all()
    return render_template('list.html', entries=entries, folder='category', title=_(u"Category list"))

@app.route("/category/<name>",defaults={'page': 1})
@app.route('/category/<name>/<int:page>')
@login_required_if_no_ano
def category(name,page):
    entries, random, pagination = fill_indexpage(page, db.Books, db.Books.tags.any(db.Tags.name == name ), db.Books.last_modified.desc())
    return render_template('index.html', random=random, entries=entries, pagination=pagination,  title=_(u"Category: %(name)s",name=name))

@app.route("/book/<int:id>")
@login_required_if_no_ano
def show_book(id):
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    entries = db.session.query(db.Books).filter(db.Books.id == id).filter(filter).first()
    if entries :
        for index in range(0,len(entries.languages)) :
            try:
                entries.languages[index].language_name=LC.parse(entries.languages[index].lang_code).get_language_name(get_locale())
            except:
                entries.languages[index].language_name = _(isoLanguages.get(part3=entries.languages[index].lang_code).name)
        cc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
        book_in_shelfs = []
        shelfs = ub.session.query(ub.BookShelf).filter(ub.BookShelf.book_id == id).all()
        for entry in shelfs:
            book_in_shelfs.append(entry.shelf)

        return render_template('detail.html', entry=entries,  cc=cc, title=entries.title, books_shelfs=book_in_shelfs)
    else :
        flash(_(u"Error opening eBook. File does not exist or file is not accessible:"), category="error")
        return redirect('/' or url_for("index", _external=True))

@app.route("/admin/")
@login_required
def admin():
    #return "Admin ONLY!"
    abort(403)

@app.route("/stats")
@login_required
def stats():
    counter = len(db.session.query(db.Books).all())
    authors = len(db.session.query(db.Authors).all())
    return render_template('stats.html', bookcounter=counter, authorcounter=authors, title=_(u"Statistics"))

@app.route("/search", methods=["GET"])
@login_required_if_no_ano
def search():
    term = request.args.get("query").strip()
    if term:
        if current_user.filter_language() != "all":
            filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
        else:
            filter = True
        entries = db.session.query(db.Books).filter(db.or_(db.Books.tags.any(db.Tags.name.like("%"+term+"%")),db.Books.series.any(db.Series.name.like("%"+term+"%")),db.Books.authors.any(db.Authors.name.like("%"+term+"%")),db.Books.title.like("%"+term+"%"))).filter(filter).all()
        return render_template('search.html', searchterm=term, entries=entries)
    else:
        return render_template('search.html', searchterm="")

@app.route("/advanced_search", methods=["GET"])
@login_required_if_no_ano
def advanced_search():
    if request.method == 'GET':
        q = db.session.query(db.Books)
        include_tag_inputs = request.args.getlist('include_tag')
        exclude_tag_inputs = request.args.getlist('exclude_tag')
        author_name = request.args.get("author_name")
        book_title = request.args.get("book_title")
        if author_name: author_name=author_name.strip()
        if book_title : book_title=book_title.strip()
        if include_tag_inputs or exclude_tag_inputs or author_name or book_title:
            searchterm = []
            searchterm.extend((author_name, book_title))
            tag_names = db.session.query(db.Tags).filter(db.Tags.id.in_(include_tag_inputs)).all()
            searchterm.extend(tag.name for tag in tag_names)
            searchterm = " + ".join(filter(None, searchterm))
            q = q.filter(db.Books.authors.any(db.Authors.name.like("%" +  author_name + "%")), db.Books.title.like("%"+book_title+"%"))
            # random = db.session.query(db.Books).order_by(func.random()).limit(config.RANDOM_BOOKS)
            for tag in include_tag_inputs:
                q = q.filter(db.Books.tags.any(db.Tags.id == tag))
            for tag in exclude_tag_inputs:
                q = q.filter(not_(db.Books.tags.any(db.Tags.id == tag)))
            if current_user.filter_language() != "all":
                q = q.filter(db.Books.languages.any(db.Languages.lang_code == current_user.filter_language()))
            q = q.all()
            return render_template('search.html', searchterm=searchterm, entries=q)
    tags = db.session.query(db.Tags).order_by(db.Tags.name).all()
    return render_template('search_form.html', tags=tags)

@app.route("/cover/<path:cover_path>")
@login_required_if_no_ano
def get_cover(cover_path):
    return send_from_directory(os.path.join(config.DB_ROOT, cover_path), "cover.jpg")

@app.route("/feed/cover/<path:cover_path>")
@requires_basic_auth_if_no_ano
def feed_get_cover(cover_path):
    return send_from_directory(os.path.join(config.DB_ROOT, cover_path), "cover.jpg")

@app.route("/read/<int:book_id>/<format>")
@login_required
def read_book(book_id,format):
    book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
    if book :
        book_dir = os.path.join(config.MAIN_DIR, "cps","static", str(book_id))
        if not os.path.exists(book_dir):
            os.mkdir(book_dir)
        if format.lower() == "epub":
            #check if mimetype file is exists
            mime_file = str(book_id) +"/mimetype"
            if os.path.exists(mime_file) == False:
                epub_file = os.path.join(config.DB_ROOT, book.path, book.data[0].name) + ".epub"
                if not os.path.isfile(epub_file):
                    raise ValueError('Error opening eBook. File does not exist: ', epub_file)
                zfile = zipfile.ZipFile(epub_file)
                for name in zfile.namelist():
                    (dirName, fileName) = os.path.split(name)
                    newDir = os.path.join(book_dir, dirName)
                    if not os.path.exists(newDir):
                        try:
                            os.makedirs(newDir)
                        except OSError as exception:
                            if exception.errno == errno.EEXIST:
                                pass
                            else:
                                raise
                    if fileName:
                        fd = open(os.path.join(newDir, fileName), "wb")
                        fd.write(zfile.read(name))
                        fd.close()
                zfile.close()
            return render_template('read.html', bookid=book_id, title=_(u"Read a Book"))
        elif format.lower() == "pdf":
            all_name = str(book_id) +"/"+ urllib.quote(book.data[0].name) +".pdf"
            tmp_file = os.path.join(book_dir,urllib.quote(book.data[0].name)) + ".pdf"
            if os.path.exists(tmp_file) == False:
                pdf_file =  os.path.join(config.DB_ROOT, book.path, book.data[0].name) + ".pdf"
                copyfile(pdf_file,tmp_file)
            return render_template('readpdf.html', pdffile=all_name, title=_(u"Read a Book"))
        elif  format.lower() == "txt":
            all_name = str(book_id) +"/"+ urllib.quote(book.data[0].name) +".txt"
            tmp_file = os.path.join(book_dir,urllib.quote(book.data[0].name)) + ".txt"
            if os.path.exists(all_name) == False:
                txt_file =  os.path.join(config.DB_ROOT, book.path, book.data[0].name) + ".txt"
                copyfile(txt_file,tmp_file)
            return render_template('readtxt.html', txtfile=all_name, title=_(u"Read a Book"))
    else :
        flash(_(u"Error opening eBook. File does not exist or file is not accessible:"), category="error")
        return redirect('/' or url_for("index", _external=True))

@app.route("/download/<int:book_id>/<format>")
@login_required
@download_required
def get_download_link(book_id, format):
    format = format.split(".")[0]
    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 == format.upper()).first()
    helper.update_download(book_id, int(current_user.id))
    author = helper.get_normalized_author(book.author_sort)
    file_name = book.title
    if len(author) > 0:
        file_name = author+'-'+file_name
    file_name = helper.get_valid_filename(file_name)
    response = make_response(send_from_directory(os.path.join(config.DB_ROOT, book.path), data.name + "." +format))
    response.headers["Content-Disposition"] = \
        "attachment; " \
        "filename={utf_filename}.{suffix};" \
        "filename*=UTF-8''{utf_filename}.{suffix}".format(
        utf_filename=file_name.encode('utf-8'),
        suffix=format
    )
    return response

@app.route('/register', methods = ['GET', 'POST'])
def register():
    error = None
    if not config.PUBLIC_REG:
        abort(404)
    if current_user is not None and current_user.is_authenticated:
        return redirect(url_for('index', _external=True))

    if request.method == "POST":
        to_save = request.form.to_dict()
        if not to_save["nickname"] or not to_save["email"] or not to_save["password"]:
            flash(_(u"Please fill out all fields!"), category="error")
            return render_template('register.html', title="register")

        existing_user = ub.session.query(ub.User).filter(ub.User.nickname == to_save["nickname"]).first()
        existing_email = ub.session.query(ub.User).filter(ub.User.email == to_save["email"]).first()
        if not existing_user and not existing_email:
            content = ub.User()
            content.password = generate_password_hash(to_save["password"])
            content.nickname = to_save["nickname"]
            content.email = to_save["email"]
            content.role = 0
            try:
                ub.session.add(content)
                ub.session.commit()
            except:
                ub.session.rollback()
                flash(_(u"An unknown error occured. Please try again later."), category="error")
                return render_template('register.html', title="register")
            flash("Your account has been created. Please login.", category="success")
            return redirect(url_for('login', _external=True))
        else:
            flash(_(u"This username or email address is already in use."), category="error")
            return render_template('register.html', title="register")

    return render_template('register.html', title=_(u"register"))

@app.route('/login', methods = ['GET', 'POST'])
def login():
    error = None

    if current_user is not None and current_user.is_authenticated:
        return redirect(url_for('index', _external=True))

    if request.method == "POST":
        form = request.form.to_dict()
        user = ub.session.query(ub.User).filter(ub.User.nickname == form['username'].strip()).first()

        if user and check_password_hash(user.password, form['password']):
            login_user(user, remember = True)
            flash(_(u"you are now logged in as: '%(nickname)s'", nickname=user.nickname), category="success")
            return redirect('/' or url_for("index", _external=True))
        else:
            flash(_(u"Wrong Username or Password"), category="error")

    return render_template('login.html',title=_(u"login"))

@app.route('/logout')
@login_required
def logout():
    if current_user is not None and current_user.is_authenticated:
        logout_user()
    return redirect(url_for("index", _external=True))


@app.route('/send/<int:book_id>')
@login_required
@download_required
def send_to_kindle(book_id):
    settings = ub.get_mail_settings()
    if settings.get("mail_server", "mail.example.com") == "mail.example.com":
        flash(_(u"Please configure the SMTP mail settings first..."), category="error")
    elif current_user.kindle_mail:
        result = helper.send_mail(book_id, current_user.kindle_mail)
        if result is None:
            flash(_(u"Book successfully send to %(kindlemail)s", kindlemail=current_user.kindle_mail), category="success")
            helper.update_download(book_id, int(current_user.id))
        else:
            flash(_(u"There was an error sending this book: %(res)s",res=result), category="error")
    else:
        flash(_(u"Please configure your kindle email address first..."), category="error")
    return redirect(request.environ["HTTP_REFERER"])

@app.route("/shelf/add/<int:shelf_id>/<int:book_id>")
@login_required
def add_to_shelf(shelf_id, book_id):
    shelf = ub.session.query(ub.Shelf).filter(ub.Shelf.id == shelf_id).first()
    if not shelf.is_public and not shelf.user_id == int(current_user.id):
        flash("Sorry you are not allowed to add a book to the the shelf: %s" % shelf.name)
        return redirect(url_for('index', _external=True))

    ins = ub.BookShelf(shelf=shelf.id, book_id=book_id)
    ub.session.add(ins)
    ub.session.commit()

    flash(_(u"Book has been added to shelf: %(sname)s",sname=shelf.name), category="success")

    #return redirect(url_for('show_book', id=book_id))
    return redirect(request.environ["HTTP_REFERER"])

@app.route("/shelf/remove/<int:shelf_id>/<int:book_id>")
@login_required
def remove_from_shelf(shelf_id, book_id):
    shelf = ub.session.query(ub.Shelf).filter(ub.Shelf.id == shelf_id).first()
    if not shelf.is_public and not shelf.user_id == int(current_user.id):
        flash("Sorry you are not allowed to remove a book from this shelf: %s" % shelf.name)
        return redirect(url_for('index', _external=True))

    book_shelf = ub.session.query(ub.BookShelf).filter(ub.BookShelf.shelf == shelf_id, ub.BookShelf.book_id == book_id).first()

    #rem = ub.BookShelf(shelf=shelf.id, book_id=book_id)
    ub.session.delete(book_shelf)
    ub.session.commit()

    flash(_(u"Book has been removed from shelf: %(sname)s",sname=shelf.name), category="success")

    return redirect(request.environ["HTTP_REFERER"])

@app.route("/shelf/create", methods=["GET", "POST"])
@login_required
def create_shelf():
    shelf = ub.Shelf()
    if request.method == "POST":
        to_save = request.form.to_dict()
        if "is_public" in to_save:
            shelf.is_public = 1
        shelf.name = to_save["title"]
        shelf.user_id = int(current_user.id)
        existing_shelf = ub.session.query(ub.Shelf).filter(ub.Shelf.name == shelf.name).first()
        if existing_shelf:
            flash(_(u"A shelf with the name '%(title)s' already exists.",title=to_save["title"]), category="error")
        else:
            try:
                ub.session.add(shelf)
                ub.session.commit()
                flash(_(u"Shelf %(title)s created",title=to_save["title"]), category="success")
            except:
                flash(_(u"There was an error"), category="error")
        return render_template('shelf_edit.html',title=_(u"create a shelf"))
    else:
        return render_template('shelf_edit.html',title=_(u"create a shelf"))

@app.route("/shelf/delete/<int:shelf_id>")
@login_required
def delete_shelf(shelf_id):
    cur_shelf = ub.session.query(ub.Shelf).filter(ub.Shelf.id == shelf_id).first()
    deleted = 0
    if current_user.role == ub.ROLE_ADMIN:
        deleted = ub.session.query(ub.Shelf).filter(ub.Shelf.id == shelf_id).delete()

    else:
        deleted = ub.session.query(ub.Shelf).filter(ub.or_(ub.and_(ub.Shelf.user_id == int(current_user.id), ub.Shelf.id == shelf_id), ub.and_(ub.Shelf.is_public == 1, ub.Shelf.id == shelf_id))).delete()

    if deleted:
        ub.session.query(ub.BookShelf).filter(ub.BookShelf.shelf == shelf_id).delete()
        ub.session.commit()
        flash( _("successfully deleted shelf %(name)s", name=cur_shelf.name, category="success") )
    return redirect(url_for('index'))

@app.route("/shelf/<int:shelf_id>")
@login_required_if_no_ano
def show_shelf(shelf_id):
    if current_user.is_anonymous():
        shelf = ub.session.query(ub.Shelf).filter(ub.Shelf.is_public == 1, ub.Shelf.id == shelf_id).first()
    else :
        shelf = ub.session.query(ub.Shelf).filter(ub.or_(ub.and_(ub.Shelf.user_id == int(current_user.id), ub.Shelf.id == shelf_id), ub.and_(ub.Shelf.is_public == 1, ub.Shelf.id == shelf_id))).first()
    result = list()
    if shelf:
        books_in_shelf = ub.session.query(ub.BookShelf).filter(ub.BookShelf.shelf == shelf_id).all()
        for book in books_in_shelf:
            cur_book = db.session.query(db.Books).filter(db.Books.id == book.book_id).first()
            result.append(cur_book)

    return render_template('shelf.html', entries=result, title=_(u"Shelf: '%(name)s'" ,name=shelf.name), shelf=shelf)

@app.route("/me", methods = ["GET", "POST"])
@login_required
def profile():
    content = ub.session.query(ub.User).filter(ub.User.id == int(current_user.id)).first()
    downloads = list()
    languages = db.session.query(db.Languages).all()
    for lang in languages:
        try:
            cur_l = LC.parse(lang.lang_code)
            lang.name = cur_l.get_language_name(get_locale())
        except:
            lang.name = _(isoLanguages.get(part3=lang.lang_code).name)
    translations=babel.list_translations()+[LC('en')]
    for book in content.downloads:
        downloads.append(db.session.query(db.Books).filter(db.Books.id == book.book_id).first())
    if request.method == "POST":
        to_save = request.form.to_dict()
        content.random_books = 0
        if current_user.role_passwd() or current_user.role_admin():
            if to_save["password"]:
                content.password = generate_password_hash(to_save["password"])
        if "kindle_mail" in to_save and to_save["kindle_mail"] != content.kindle_mail:
            content.kindle_mail = to_save["kindle_mail"]
        if to_save["email"] and to_save["email"] != content.email:
            content.email = to_save["email"]
        if "show_random" in to_save and to_save["show_random"] == "on":
            content.random_books = 1
        if "default_language" in to_save:
            content.default_language = to_save["default_language"]
        if to_save["locale"]:
            content.locale = to_save["locale"]
        try:
            ub.session.commit()
        except IntegrityError:
            ub.session.rollback()
            flash(_(u"Found an existing account for this email address."), category="error")
            return render_template("user_edit.html", content=content, downloads=downloads, title=_(u"%(name)s's profile", name=current_user.nickname))
        flash(_(u"Profile updated"), category="success")
    return render_template("user_edit.html", translations=translations, profile=1, languages=languages, content=content, downloads=downloads, title=_(u"%(name)s's profile", name=current_user.nickname))

@app.route("/admin/user")
@login_required
@admin_required
def user_list():
    content = ub.session.query(ub.User).all()
    settings = ub.session.query(ub.Settings).first()
    return render_template("user_list.html", content=content, email=settings, title=_(u"User list"))

@app.route("/admin/user/new", methods = ["GET", "POST"])
@login_required
@admin_required
def new_user():
    content = ub.User()
    languages = db.session.query(db.Languages).all()
    for lang in languages:
        try:
            cur_l = LC.parse(lang.lang_code)
            lang.name = cur_l.get_language_name(get_locale())
        except:
            lang.name = _(isoLanguages.get(part3=lang.lang_code).name)
    translations=babel.list_translations()+[LC('en')]
    if request.method == "POST":
        to_save = request.form.to_dict()
        if not to_save["nickname"] or not to_save["email"] or not to_save["password"]:
            flash(_(u"Please fill out all fields!"), category="error")
            return render_template("user_edit.html", new_user=1, content=content, title=_(u"Add new user"))
        content.password = generate_password_hash(to_save["password"])
        content.nickname = to_save["nickname"]
        content.email = to_save["email"]
        content.default_language = to_save["default_language"]
        content.locale = to_save["locale"]
        content.random_books = 0
        content.language_books = 0
        content.series_books = 0
        content.category_books = 0
        content.hot_books = 0
        if "show_language" in to_save:
            content.language_books = to_save["show_language"]
        if "show_series" in to_save:
            content.series_books = to_save["show_series"]
        if "show_category" in to_save:
            content.category_books = to_save["show_category"]
        if "show_hot" in to_save:
            content.hot_books = to_save["show_hot"]
        content.role = 0
        if "admin_role" in to_save:
            content.role = content.role + ub.ROLE_ADMIN
        if "download_role" in to_save:
            content.role = content.role + ub.ROLE_DOWNLOAD
        if "upload_role" in to_save:
            content.role = content.role + ub.ROLE_UPLOAD
        if "edit_role" in to_save:
            content.role = content.role + ub.ROLE_EDIT
        if "passwd_role" in to_save:
            content.role = content.role + ub.ROLE_PASSWD
        try:
            ub.session.add(content)
            ub.session.commit()
            flash(_("User '%(user)s' created" , user=content.nickname), category="success")
            return redirect(url_for('user_list', _external=True))
        except IntegrityError:
            ub.session.rollback()
            flash(_(u"Found an existing account for this email address or nickname."), category="error")
    return render_template("user_edit.html", new_user=1, content=content, translations=translations, languages=languages, title="Add new user")

@app.route("/admin/user/mailsettings", methods = ["GET", "POST"])
@login_required
@admin_required
def edit_mailsettings():
    content = ub.session.query(ub.Settings).first()
    if request.method == "POST":
        to_save = request.form.to_dict()
        content.mail_server = to_save["mail_server"]
        content.mail_port = int(to_save["mail_port"])
        content.mail_login = to_save["mail_login"]
        content.mail_password = to_save["mail_password"]
        content.mail_from = to_save["mail_from"]
        if "mail_use_ssl" in to_save:
            content.mail_use_ssl = 1
        else:
            content.mail_use_ssl = 0
        try:
            ub.session.commit()
            flash(_(u"Mail settings updated"), category="success")
        except (e):
            flash(e, category="error")
    return render_template("email_edit.html", content=content, title=_("Edit mail settings"))

@app.route("/admin/user/<int:user_id>", methods = ["GET", "POST"])
@login_required
@admin_required
def edit_user(user_id):
    content = ub.session.query(ub.User).filter(ub.User.id == int(user_id)).first()
    downloads = list()
    languages = db.session.query(db.Languages).all()
    for lang in languages:
        try:
            cur_l = LC.parse(lang.lang_code)
            lang.name = cur_l.get_language_name(get_locale())
        except:
            lang.name = _(isoLanguages.get(part3=lang.lang_code).name)
    translations = babel.list_translations() + [LC('en')]
    for book in content.downloads:
        downloads.append(db.session.query(db.Books).filter(db.Books.id == book.book_id).first())
    if request.method == "POST":
        to_save = request.form.to_dict()
        if "delete" in to_save:
            ub.session.delete(content)
            flash(_(u"User '%(nick)s' deleted",nick=content.nickname), category="success")
            return redirect(url_for('user_list', _external=True))
        else:
            if to_save["password"]:
                content.password = generate_password_hash(to_save["password"])
           
            if "admin_role" in to_save and not content.role_admin():
                content.role = content.role + ub.ROLE_ADMIN
            elif not "admin_role" in to_save and content.role_admin():
                content.role = content.role - ub.ROLE_ADMIN
            
            if "download_role" in to_save and not content.role_download():
                content.role = content.role + ub.ROLE_DOWNLOAD
            elif not "download_role" in to_save and content.role_download():
                content.role = content.role - ub.ROLE_DOWNLOAD
            
            if "upload_role" in to_save and not content.role_upload():
                content.role = content.role + ub.ROLE_UPLOAD
            elif not "upload_role" in to_save and content.role_upload():
                content.role = content.role - ub.ROLE_UPLOAD
            
            if "edit_role" in to_save and not content.role_edit():
                content.role = content.role + ub.ROLE_EDIT
            elif not "edit_role" in to_save and content.role_edit():
                content.role = content.role - ub.ROLE_EDIT
            
            if "passwd_role" in to_save and not content.role_passwd():
                content.role = content.role + ub.ROLE_PASSWD
            elif not "passwd_role" in to_save and content.role_passwd():
                content.role = content.role - ub.ROLE_PASSWD
            content.random_books = 0
            content.language_books = 0
            content.series_books = 0
            content.category_books = 0
            content.hot_books = 0
            if "show_random" in to_save and to_save["show_random"] == "on":
                content.random_books = 1
            if "show_language" in to_save and to_save["show_language"] == "on":
                content.language_books = 1
            if "show_series" in to_save and to_save["show_series"] == "on":
                content.series_books = 1
            if "show_category" in to_save and to_save["show_category"] == "on":
                content.category_books = 1
            if "show_hot" in to_save and to_save["show_hot"] == "on":
                content.hot_books = 1
            if "default_language" in to_save:
                content.default_language = to_save["default_language"]
            if to_save["locale"]:
                content.locale = to_save["locale"]
            if to_save["email"] and to_save["email"] != content.email:
                content.email = to_save["email"]
            if "kindle_mail" in to_save and to_save["kindle_mail"] != content.kindle_mail:
                content.kindle_mail = to_save["kindle_mail"]
        try:
            ub.session.commit()
            flash(_(u"User '%(nick)s' updated",nick= content.nickname), category="success")
        except IntegrityError:
            ub.session.rollback()
            flash(_(u"An unknown error occured."), category="error")
    return render_template("user_edit.html", translations=translations, languages=languages, new_user=0, content=content, downloads=downloads, title=_(u"Edit User %(nick)s",nick=content.nickname))

@app.route("/admin/book/<int:book_id>", methods=['GET', 'POST'])
@login_required
@edit_required
def edit_book(book_id):
    ## create the function for sorting...
    db.session.connection().connection.connection.create_function("title_sort",1,db.title_sort)
    cc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
    if current_user.filter_language() != "all":
        filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
    else:
        filter = True
    book = db.session.query(db.Books).filter(db.Books.id == book_id).filter(filter).first()
    author_names = []
    if book:
        for index in range(0, len(book.languages)):
            try:
                book.languages[index].language_name=LC.parse(book.languages[index].lang_code).get_language_name(get_locale())
            except:
                book.languages[index].language_name=_(isoLanguages.get(part3=book.languages[index].lang_code).name)
        for author in book.authors:
            author_names.append(author.name)
        if request.method == 'POST':
            edited_books_id = set()
            to_save = request.form.to_dict()
            if book.title != to_save["book_title"]:
                book.title = to_save["book_title"]
                edited_books_id.add(book.id)
            input_authors = to_save["author_name"].split('&')
            input_authors = map(lambda it: it.strip(), input_authors)
            # we have all author names now
            author0_before_edit = book.authors[0].name
            modify_database_object(input_authors, book.authors, db.Authors, db.session, 'author')
            if author0_before_edit != book.authors[0].name:
                edited_books_id.add(book.id)
            
            if to_save["cover_url"] and os.path.splitext(to_save["cover_url"])[1].lower() == ".jpg":
                img = requests.get(to_save["cover_url"])
                f = open(os.path.join(config.DB_ROOT, book.path, "cover.jpg"), "wb")
                f.write(img.content)
                f.close()

            if book.series_index != to_save["series_index"]:
                book.series_index = to_save["series_index"]

            if len(book.comments):
                book.comments[0].text = to_save["description"]
            else:
                book.comments.append(db.Comments(text=to_save["description"], book=book.id))

            input_tags = to_save["tags"].split(',')
            input_tags = map(lambda it: it.strip(), input_tags)
            modify_database_object(input_tags, book.tags, db.Tags, db.session, 'tags')

            input_series = [to_save["series"].strip()]
            input_series = [x for x in input_series if x != '']
            modify_database_object(input_series, book.series, db.Series, db.session, 'series')

            input_languages = to_save["languages"].split(',')
            input_languages = map(lambda it: it.strip().lower(), input_languages)

            # retranslate displayed text to language codes
            languages = db.session.query(db.Languages).all()
            input_l=[]
            for lang in languages:
                try:
                    lang.name = LC.parse(lang.lang_code).get_language_name(get_locale()).lower()
                except:
                    lang.name = _(isoLanguages.get(part3=lang.lang_code).name).lower()
                for inp_lang in input_languages:
                    if inp_lang == lang.name:
                        input_l.append(lang.lang_code)
            modify_database_object(input_l, book.languages, db.Languages, db.session, 'languages')

            if to_save["rating"].strip():
                old_rating = False
                if len(book.ratings) > 0:
                    old_rating = book.ratings[0].rating
                ratingx2 = int(float(to_save["rating"]) *2)
                if ratingx2 != old_rating:
                    is_rating = db.session.query(db.Ratings).filter(db.Ratings.rating == ratingx2).first()
                    if is_rating:
                        book.ratings.append(is_rating)
                    else:
                        new_rating = db.Ratings(rating=ratingx2)
                        book.ratings.append(new_rating)
                    if old_rating:
                        book.ratings.remove(book.ratings[0])
            else:
                if len(book.ratings) > 0:
                    book.ratings.remove(book.ratings[0])

            for c in cc:
                cc_string = "custom_column_" + str(c.id)
                if not c.is_multiple:
                    if len(getattr(book, cc_string)) > 0:
                        cc_db_value = getattr(book, cc_string)[0].value
                    else:
                        cc_db_value = None
                    if to_save[cc_string].strip():
                        if c.datatype == 'bool':
                            if to_save[cc_string] == 'None':
                                to_save[cc_string]= None
                            else:
                                to_save[cc_string] = 1 if to_save[cc_string] == 'True' else 0
                            if to_save[cc_string] != cc_db_value:
                                if cc_db_value is not None:
                                    if to_save[cc_string] is not None:
                                        setattr(getattr(book, cc_string)[0], 'value', to_save[cc_string])
                                    else :
                                        del_cc = getattr(book, cc_string)[0]
                                        getattr(book, cc_string).remove(del_cc)
                                        db.session.delete(del_cc)
                                else :
                                    cc_class = db.cc_classes[c.id]
                                    new_cc = cc_class(value=to_save[cc_string],book=book_id)
                                    db.session.add(new_cc)
                        else:
                            if c.datatype == 'rating':
                                to_save[cc_string] = str(int(float(to_save[cc_string]) *2))
                            if to_save[cc_string].strip() != cc_db_value:
                                if cc_db_value != None:
                                    #remove old cc_val
                                    del_cc = getattr(book, cc_string)[0]
                                    getattr(book, cc_string).remove(del_cc)
                                    if len(del_cc.books) == 0:
                                        db.session.delete(del_cc)
                                cc_class = db.cc_classes[c.id]
                                new_cc = db.session.query(cc_class).filter(cc_class.value == to_save[cc_string].strip()).first()
                                # if no cc val is found add it
                                if new_cc == None:
                                    new_cc = cc_class(value=to_save[cc_string].strip())
                                    db.session.add(new_cc)
                                    new_cc = db.session.query(cc_class).filter(cc_class.value == to_save[cc_string].strip()).first()
                                # add cc value to book
                                getattr(book, cc_string).append(new_cc)
                    else:
                        if cc_db_value != None:
                            #remove old cc_val
                            del_cc = getattr(book, cc_string)[0]
                            getattr(book, cc_string).remove(del_cc)
                            if len(del_cc.books) == 0:
                                db.session.delete(del_cc)
                else:
                    input_tags = to_save[cc_string].split(',')
                    input_tags = map(lambda it: it.strip(), input_tags)
                    input_tags = [x for x in input_tags if x != '']
                    # we have all author names now
                    # 1. search for tags to remove
                    del_tags = []
                    for c_tag in getattr(book, cc_string):
                        found = False
                        for inp_tag in input_tags:
                            if inp_tag == c_tag.value:
                                found = True
                                break;
                        # if the tag was not found in the new list, add him to remove list
                        if not found:
                            del_tags.append(c_tag)
                    # 2. search for tags that need to be added
                    add_tags = []
                    for inp_tag in input_tags:
                        found = False
                        for c_tag in getattr(book, cc_string):
                            if inp_tag == c_tag.value:
                                found = True
                                break;
                        if not found:
                            add_tags.append(inp_tag)
                    # if there are tags to remove, we remove them now
                    if len(del_tags) > 0:
                        for del_tag in del_tags:
                            getattr(book, cc_string).remove(del_tag)
                            if len(del_tag.books) == 0:
                                db.session.delete(del_tag)
                    # if there are tags to add, we add them now!
                    if len(add_tags) > 0:
                        for add_tag in add_tags:
                            # check if a tag with that name exists
                            new_tag = db.session.query(db.cc_classes[c.id]).filter(db.cc_classes[c.id].value == add_tag).first()
                            # if no tag is found add it
                            if new_tag == None:
                                new_tag = db.cc_classes[c.id](value=add_tag)
                                db.session.add(new_tag)
                                new_tag = db.session.query(db.cc_classes[c.id]).filter(db.cc_classes[c.id].value == add_tag).first()
                            # add tag to book
                            getattr(book, cc_string).append(new_tag)

            db.session.commit()
            author_names = []
            for author in book.authors:
                author_names.append(author.name)
            for b in edited_books_id:
                helper.update_dir_stucture(b)
            if "detail_view" in to_save:
                return redirect(url_for('show_book', id=book.id, _external=True))
            else:
                return render_template('edit_book.html', book=book, authors=author_names, cc=cc)
        else:
            return render_template('edit_book.html', book=book, authors=author_names, cc=cc)
    else:
        flash(_(u"Error opening eBook. File does not exist or file is not accessible:"), category="error")
        return redirect('/' or url_for("index", _external=True))

import uploader
from shutil import move

@app.route("/upload", methods = ["GET", "POST"])
@login_required
@upload_required
def upload():
    if not config.UPLOADING:
        abort(404)
    ## create the function for sorting...
    db.session.connection().connection.connection.create_function("title_sort",1,db.title_sort)
    db.session.connection().connection.connection.create_function('uuid4', 0, lambda : str(uuid4()))
    if request.method == 'POST' and 'btn-upload' in request.files:
        file = request.files['btn-upload']
        meta = uploader.upload(file)

        title = meta.title.encode('utf-8')
        author = meta.author.encode('utf-8')

        title_dir = helper.get_valid_filename(title.decode('utf-8'), False)
        author_dir = helper.get_valid_filename(author.decode('utf-8'), False)
        data_name = title_dir
        filepath = config.DB_ROOT + os.sep + author_dir + os.sep + title_dir
        saved_filename = filepath + os.sep + data_name + meta.extension

        if not os.path.exists(filepath):
            try:
                os.makedirs(filepath)
            except OSError:
                flash(_(u"Failed to create path %s (Permission denied)." % filepath), category="error")
                return redirect(url_for('index', _external=True))
        try:
            copyfile(meta.file_path, saved_filename)
        except OSError, e:
            flash(_(u"Failed to store file %s (Permission denied)." % saved_filename), category="error")
            return redirect(url_for('index', _external=True))
        try:
            os.unlink(meta.file_path)
        except OSError, e:
            flash(_(u"Failed to delete file %s (Permission denied)." % meta.file_path), category="warning")

        file_size = os.path.getsize(saved_filename)
        if meta.cover is None:
            has_cover = 0
            basedir = os.path.dirname(__file__)
            copyfile(os.path.join(basedir, "static/generic_cover.jpg"), os.path.join(filepath, "cover.jpg"))
        else:
            has_cover = 1
            move(meta.cover, os.path.join(filepath, "cover.jpg"))

        is_author = db.session.query(db.Authors).filter(db.Authors.name == author).first()
        if is_author:
            db_author = is_author
        else:
            db_author = db.Authors(author, "", "")
            db.session.add(db_author)
        path = os.path.join(author_dir, title_dir)
        db_book = db.Books(title, "", "", datetime.datetime.now(), datetime.datetime(101, 01,01), 1, datetime.datetime.now(), path, has_cover, db_author, [])
        db_book.authors.append(db_author)
        db_data = db.Data(db_book, meta.extension.upper()[1:], file_size, data_name)
        db_book.data.append(db_data)
        
        db.session.add(db_book)
        db.session.commit()
        author_names = []
        for author in db_book.authors:
            author_names.append(author.name)
    cc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
    if current_user.role_edit() or current_user.role_admin():
        return render_template('edit_book.html', book=db_book, authors=author_names, cc=cc)
    book_in_shelfs = []
    return render_template('detail.html', entry=db_book,  cc=cc, title=db_book.title, books_shelfs=book_in_shelfs)