Finalize graphical setup for calibre-web

cps.py

@@ -3,27 +3,25 @@ import sys
 import time
 
 base_path = os.path.dirname(os.path.abspath(__file__))
-
 # Insert local directories into path
 sys.path.insert(0, os.path.join(base_path, 'vendor'))
 
 from cps import web
-# from cps import config
 from tornado.wsgi import WSGIContainer
 from tornado.httpserver import HTTPServer
 from tornado.ioloop import IOLoop
 
 if __name__ == '__main__':
-    '''if config.DEVELOPMENT:
-        web.app.run(host="0.0.0.0", port=web.config.config_port, debug=True)
-    else:'''
-    http_server = HTTPServer(WSGIContainer(web.app))
-    http_server.listen(web.config.config_port)
-    IOLoop.instance().start()
+    if web.ub.DEVELOPMENT:
+        web.app.run(host="0.0.0.0", port=web.ub.config.config_port, debug=True)
+    else:
+        http_server = HTTPServer(WSGIContainer(web.app))
+        http_server.listen(web.ub.config.config_port)
+        IOLoop.instance().start()
 
     if web.global_task == 0:
         print("Performing restart of Calibre-web")
-        os.execl(sys.executable,sys.executable, *sys.argv)
+        os.execl(sys.executable, sys.executable, *sys.argv)
     else:
         print("Performing shutdown of Calibre-web")
-    os._exit(0)
+    sys.exit(0)

cps/db.py

@@ -7,12 +7,21 @@ from sqlalchemy.orm import *
 import os
 import re
 import ast
-from ub import Config
+from ub import config
+import ub
+
+session = None
+cc_exceptions = None
+cc_classes = None
+cc_ids = None
+books_custom_column_links = None
+engine = None
+
 
 # user defined sort function for calibre databases (Series, etc.)
 def title_sort(title):
     # calibre sort stuff
-    config=Config()
+    # config=Config()
     title_pat = re.compile(config.config_title_regex, re.IGNORECASE)
     match = title_pat.search(title)
     if match:
@@ -216,9 +225,10 @@ class Books(Base):
     series = relationship('Series', secondary=books_series_link, backref='books')
     ratings = relationship('Ratings', secondary=books_ratings_link, backref='books')
     languages = relationship('Languages', secondary=books_languages_link, backref='books')
-    identifiers=relationship('Identifiers', backref='books')
+    identifiers = relationship('Identifiers', backref='books')
 
-    def __init__(self, title, sort, author_sort, timestamp, pubdate, series_index, last_modified, path, has_cover, authors, tags):
+    def __init__(self, title, sort, author_sort, timestamp, pubdate, series_index, last_modified, path, has_cover,
+                 authors, tags):  # ToDO check Authors and tags necessary
         self.title = title
         self.sort = sort
         self.author_sort = author_sort
@@ -253,19 +263,33 @@ class Custom_Columns(Base):
         return display_dict
 
 
-def setup_db(config):
+def setup_db():
     global session
     global cc_exceptions
     global cc_classes
     global cc_ids
     global books_custom_column_links
+    global engine
 
-    if config.config_calibre_dir is None:
-        return
+    if config.config_calibre_dir is None or config.config_calibre_dir ==  u'':
+        return False
 
     dbpath = os.path.join(config.config_calibre_dir, "metadata.db")
     engine = create_engine('sqlite:///{0}'.format(dbpath.encode('utf-8')), echo=False)
-    conn = engine.connect()
+    try:
+        conn = engine.connect()
+
+    except:
+        content = ub.session.query(ub.Settings).first()
+        content.config_calibre_dir = None
+        content.db_configured = False
+        ub.session.commit()
+        config.loadSettings()
+        return False
+    content = ub.session.query(ub.Settings).first()
+    content.db_configured = True
+    ub.session.commit()
+    config.loadSettings()
     conn.connection.create_function('title_sort', 1, title_sort)
 
     cc = conn.execute("SELECT id, datatype FROM custom_columns")
@@ -310,3 +334,4 @@ def setup_db(config):
     Session = sessionmaker()
     Session.configure(bind=engine)
     session = Session()
+    return True

cps/fb2.py

@@ -3,7 +3,7 @@ from lxml import etree
 import os
 import uploader
 
-
+# ToDo: Check usage of original_file_name
 def get_fb2_info(tmp_file_path, original_file_name, original_file_extension):
 
     ns = {

cps/helper.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-import db, ub
-# import config
+import db
+import ub
 from flask import current_app as app
 import logging
 import smtplib
@@ -33,8 +33,9 @@ def update_download(book_id, user_id):
         ub.session.commit()
 
 
-def make_mobi(book_id,calibrepath):
-    vendorpath = os.path.join(os.path.normpath(os.path.dirname(os.path.realpath(__file__)) + os.sep + "../vendor" + os.sep))
+def make_mobi(book_id, calibrepath):
+    vendorpath = os.path.join(os.path.normpath(os.path.dirname(os.path.realpath(__file__)) +
+                                               os.sep + "../vendor" + os.sep))
     if sys.platform == "win32":
         kindlegen = os.path.join(vendorpath, u"kindlegen.exe")
     else:
@@ -80,18 +81,20 @@ def make_mobi(book_id,calibrepath):
 
 class StderrLogger(object):
 
-    buffer=''
+    buffer = ''
+
     def __init__(self):
         self.logger = logging.getLogger('cps.web')
 
     def write(self, message):
-        if message=='\n':
+        if message == '\n':
             self.logger.debug(self.buffer)
-            self.buffer=''
+            self.buffer = ''
         else:
-            self.buffer=self.buffer+message
+            self.buffer += message
+
 
-def send_raw_email(kindle_mail,msg):
+def send_raw_email(kindle_mail, msg):
     settings = ub.get_mail_settings()
 
     msg['From'] = settings["mail_from"]
@@ -107,7 +110,7 @@ def send_raw_email(kindle_mail,msg):
 
     # send email
     try:
-        timeout=600     # set timeout to 5mins
+        timeout = 600     # set timeout to 5mins
 
         org_stderr = smtplib.stderr
         smtplib.stderr = StderrLogger()
@@ -140,18 +143,11 @@ def send_test_mail(kindle_mail):
     msg['Subject'] = _(u'Calibre-web test email')
     text = _(u'This email has been sent via calibre web.')
     msg.attach(MIMEText(text.encode('UTF-8'), 'plain', 'UTF-8'))
-    return send_raw_email(kindle_mail,msg)
+    return send_raw_email(kindle_mail, msg)
 
 
-def send_mail(book_id, kindle_mail,calibrepath):
+def send_mail(book_id, kindle_mail, calibrepath):
     """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['Subject'] = _(u'Send to Kindle')
@@ -177,7 +173,7 @@ def send_mail(book_id, kindle_mail,calibrepath):
     if 'mobi' in formats:
         msg.attach(get_attachment(formats['mobi']))
     elif 'epub' in formats:
-        filepath = make_mobi(book.id,calibrepath)
+        filepath = make_mobi(book.id, calibrepath)
         if filepath is not None:
             msg.attach(get_attachment(filepath))
         elif filepath is None:
@@ -207,8 +203,7 @@ def get_attachment(file_path):
         return attachment
     except IOError:
         traceback.print_exc()
-        message = (_('The requested file could not be read. Maybe wrong '\
-                   'permissions?'))
+        message = (_('The requested file could not be read. Maybe wrong permissions?'))  # ToDo: What is this?
         return None
 
 
@@ -218,7 +213,7 @@ def get_valid_filename(value, replace_whitespace=True):
     filename. Limits num characters to 128 max.
     """
     value = value[:128]
-    re_slugify = re.compile('[^\w\s-]', re.UNICODE)
+    # 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())
@@ -238,7 +233,7 @@ def get_normalized_author(value):
     return value
     
 
-def update_dir_stucture(book_id,calibrepath):
+def update_dir_stucture(book_id, calibrepath):
     db.session.connection().connection.connection.create_function("title_sort", 1, db.title_sort)
     book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
     path = os.path.join(calibrepath, book.path)

cps/templates/admin.html

@@ -75,7 +75,7 @@
   </table>
   <div class="btn btn-default"><a href="{{url_for('configuration')}}">{{_('Configuration')}}</a></div>
   <h2>{{_('Administration')}}</h2>
-      {% if not config.DEVELOPMENT %}
+      {% if not development %}
         <div class="btn btn-default" data-toggle="modal" data-target="#RestartDialog">{{_('Restart Calibre-web')}}</a></div>
         <div class="btn btn-default" data-toggle="modal" data-target="#ShutdownDialog">{{_('Stop Calibre-web')}}</a></div>
       {% endif %}

cps/templates/config_edit.html

@@ -9,7 +9,7 @@
     </div>
     <div class="form-group">
       <label for="config_port">{{_('Server Port')}}</label>
-      <input type="text" class="form-control" name="config_port" id="config_port" value="{% if content.config_port != None %}{{ content.config_port }}{% endif %}" autocomplete="off" required>
+      <input type="number" min="1" max="65535" class="form-control" name="config_port" id="config_port" value="{% if content.config_port != None %}{{ content.config_port }}{% endif %}" autocomplete="off" required>
     </div>
     <div class="form-group">
       <label for="config_calibre_web_title">{{_('Title')}}</label>
@@ -17,11 +17,11 @@
     </div>    
     <div class="form-group">
       <label for="config_books_per_page">{{_('Books per page')}}</label>
-      <input type="text" class="form-control" name="config_books_per_page" id="config_books_per_page" value="{% if content.config_books_per_page != None %}{{ content.config_books_per_page }}{% endif %}" autocomplete="off">
+      <input type="number" min="1" max="200" class="form-control" name="config_books_per_page" id="config_books_per_page" value="{% if content.config_books_per_page != None %}{{ content.config_books_per_page }}{% endif %}" autocomplete="off">
     </div>
     <div class="form-group">
       <label for="config_random_books">{{_('No. of random books to show')}}</label>
-      <input type="text" class="form-control" name="config_random_books" id="config_random_books" value="{% if content.config_random_books != None %}{{ content.config_random_books }}{% endif %}" autocomplete="off">
+      <input type="number" min="1" max="30" class="form-control" name="config_random_books" id="config_random_books" value="{% if content.config_random_books != None %}{{ content.config_random_books }}{% endif %}" autocomplete="off">
     </div>
     
     <div class="form-group">
@@ -31,10 +31,10 @@
     <div class="form-group">
     <label for="config_log_level">{{_('Log Level')}}</label>
         <select name="config_log_level" id="config_log_level" class="form-control">
-                <option value="DEBUG" {% if content.config_log_level == 'DEBUG' %}selected{% endif %}>DEBUG</option>
-                <option value="INFO" {% if content.config_log_level == 'INFO' or content.config_log_level == None %}selected{% endif %}>INFO</option>
-                <option value="WARNING" {% if content.config_log_level == 'WARNING' %}selected{% endif %}>WARNING</option>
-                <option value="ERROR" {% if content.config_log_level == 'ERROR' %}selected{% endif %}>ERROR</option>
+                <option value="10" {% if content.config_log_level == 10 %}selected{% endif %}>DEBUG</option>
+                <option value="20" {% if content.config_log_level == 20 or content.config_log_level == None %}selected{% endif %}>INFO</option>
+                <option value="30" {% if content.config_log_level == 30 %}selected{% endif %}>WARNING</option>
+                <option value="40" {% if content.config_log_level == 40 %}selected{% endif %}>ERROR</option>
         </select>
     </div>
     <div class="form-group">
@@ -50,6 +50,12 @@
         <label for="config_public_reg">{{_('Enable public registration')}}</label>
     </div>
     <button type="submit" class="btn btn-default">{{_('Submit')}}</button>
+    {% if not origin %}
+      <a href="{{ url_for('admin') }}" class="btn btn-default">{{_('Back')}}</a>
+    {% endif %}
+    {% if success %}
+      <a href="{{ url_for('login') }}" class="btn btn-default">{{_('Login')}}</a>
+    {% endif %}
   </form>
 </div>
 {% endblock %}

cps/templates/index.html

@@ -1,6 +1,6 @@
 {% extends "layout.html" %}
 {% block body %}
-{% if g.user.show_random_books() %}
+{% if g.user.show_detail_random() %}
 <div class="discover">
   <h2>{{_('Discover (Random Books)')}}</h2>
   <div class="row">

cps/templates/stats.html

@@ -12,19 +12,19 @@
   <tbody>
     <tr>
       <th>Python</th>
-      <td>{{Versions['PythonVersion']}}</td>
+      <td>{{versions['PythonVersion']}}</td>
     </tr>
     <tr>
       <th>Kindlegen</th>
-      <td>{{Versions['KindlegenVersion']}}</td>
+      <td>{{versions['KindlegenVersion']}}</td>
     </tr>
     <tr>
       <th>ImageMagick</th>
-      <td>{{Versions['ImageVersion']}}</td>
+      <td>{{versions['ImageVersion']}}</td>
     </tr>
     <tr>
       <th>PyPDF2</th>
-      <td>{{Versions['PyPdfVersion']}}</td>
+      <td>{{versions['PyPdfVersion']}}</td>
     </tr>
   </tbody>
 </table>

cps/templates/user_edit.html

@@ -41,25 +41,33 @@
         </select>
     </div>
     <div class="form-group">
-        <input type="checkbox" name="show_random" id="show_random" {% if content.random_books %}checked{% endif %}>
+        <input type="checkbox" name="show_random" id="show_random" {% if content.show_random_books() %}checked{% endif %}>
         <label for="show_random">{{_('Show random books')}}</label>
     </div>
     <div class="form-group">
-        <input type="checkbox" name="show_hot" id="show_hot" {% if content.hot_books %}checked{% endif %}>
+        <input type="checkbox" name="show_hot" id="show_hot" {% if content.show_hot_books() %}checked{% endif %}>
         <label for="show_hot">{{_('Show hot books')}}</label>
     </div>
     <div class="form-group">
-        <input type="checkbox" name="show_language" id="show_language" {% if content.language_books %}checked{% endif %}>
+        <input type="checkbox" name="show_language" id="show_language" {% if content.show_language() %}checked{% endif %}>
         <label for="show_language">{{_('Show language selection')}}</label>
     </div>
     <div class="form-group">
-        <input type="checkbox" name="show_series" id="show_series" {% if content.series_books %}checked{% endif %}>
+        <input type="checkbox" name="show_series" id="show_series" {% if content.show_series() %}checked{% endif %}>
         <label for="show_series">{{_('Show series selection')}}</label>
     </div>
     <div class="form-group">
-        <input type="checkbox" name="show_category" id="show_category" {% if content.category_books %}checked{% endif %}>
+        <input type="checkbox" name="show_category" id="show_category" {% if content.show_category() %}checked{% endif %}>
         <label for="show_category">{{_('Show category selection')}}</label>
     </div>
+    <div class="form-group">
+        <input type="checkbox" name="show_author" id="show_author" {% if content.show_author() %}checked{% endif %}>
+        <label for="show_author">{{_('Show author selection')}}</label>
+    </div>
+    <div class="form-group">
+        <input type="checkbox" name="show_detail_random" id="show_detail_random" {% if content.show_detail_random() %}checked{% endif %}>
+        <label for="show_detail_random">{{_('Show random books in detail view')}}</label>
+    </div>
 
     {% if g.user and g.user.role_admin() and not profile %}
     {% if not content.role_anonymous() %}

cps/ub.py

@@ -8,10 +8,11 @@ from sqlalchemy.orm import *
 from flask_login import AnonymousUserMixin
 import os
 import traceback
+import logging
 from werkzeug.security import generate_password_hash
 from flask_babel import gettext as _
 
-dbpath = os.path.join(os.path.normpath(os.path.dirname(os.path.realpath(__file__))+os.sep+".."+os.sep), "app.db")
+dbpath = os.path.join(os.path.normpath(os.path.dirname(os.path.realpath(__file__)) + os.sep + ".." + os.sep), "app.db")
 engine = create_engine('sqlite:///{0}'.format(dbpath), echo=False)
 Base = declarative_base()
 
@@ -22,10 +23,26 @@ ROLE_UPLOAD = 4
 ROLE_EDIT = 8
 ROLE_PASSWD = 16
 ROLE_ANONYMOUS = 32
+
+DETAIL_RANDOM = 1
+SIDEBAR_LANGUAGE = 2
+SIDEBAR_SERIES = 4
+SIDEBAR_CATEGORY = 8
+SIDEBAR_HOT = 16
+SIDEBAR_RANDOM = 32
+SIDEBAR_AUTHOR = 64
+
 DEFAULT_PASS = "admin123"
 
 
-class UserBase():
+
+DEVELOPMENT = False
+
+
+
+
+class UserBase:
+    @staticmethod
     def is_authenticated(self):
         return True
 
@@ -78,57 +95,55 @@ class UserBase():
         return self.default_language
 
     def show_random_books(self):
-        return self.random_books
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_RANDOM == SIDEBAR_RANDOM else False
+        else:
+            return False
 
     def show_language(self):
-        return self.language_books
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_LANGUAGE == SIDEBAR_LANGUAGE else False
+        else:
+            return False
 
     def show_hot_books(self):
-        return self.hot_books
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_HOT == SIDEBAR_HOT else False
+        else:
+            return False
 
     def show_series(self):
-        return self.series_books
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_SERIES == SIDEBAR_SERIES else False
+        else:
+            return False
 
     def show_category(self):
-        return self.category_books
-
-    def __repr__(self):
-        return '<User %r>' % self.nickname
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_CATEGORY == SIDEBAR_CATEGORY else False
+        else:
+            return False
 
-class Config():
-    def __init__(self):
-        self.config_main_dir=os.path.join(os.path.normpath(os.path.dirname(
-            os.path.realpath(__file__)) + os.sep + ".." + os.sep))
-        self.db_configured=None
-        self.loadSettings()
+    def show_author(self):
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & SIDEBAR_AUTHOR == SIDEBAR_AUTHOR else False
+        else:
+            return False
 
-    def loadSettings(self):
-        data=session.query(Settings).first()
-        self.config_calibre_dir = data.config_calibre_dir
-        self.config_port = data.config_port
-        self.config_calibre_web_title = data.config_calibre_web_title
-        self.config_books_per_page = data.config_books_per_page
-        self.config_random_books = data.config_random_books
-        self.config_title_regex = data.config_title_regex
-        self.config_log_level = data.config_log_level
-        self.config_uploading = data.config_uploading
-        self.config_anonbrowse = data.config_anonbrowse
-        self.config_public_reg = data.config_public_reg
-        if self.config_calibre_dir is not None and (self.db_configured is None or self.db_configured is True):
-            self.db_configured=True
+    def show_detail_random(self):
+        if self.sidebar_view is not None:
+            return True if self.sidebar_view & DETAIL_RANDOM == DETAIL_RANDOM else False
         else:
-            self.db_configured = False
+            return False
 
-    @property
-    def get_main_dir(self):
-        return self.config_main_dir
 
-    @property
-    def is_Calibre_Configured(self):
-        return self.db_configured
+    def __repr__(self):
+        return '<User %r>' % self.nickname
 
 
-class User(UserBase,Base):
+# Baseclass for Users in Calibre-web, settings which are depending on certain users are stored here. It is derived from
+# User Base (all access methods are declared there)
+class User(UserBase, Base):
     __tablename__ = 'user'
 
     id = Column(Integer, primary_key=True)
@@ -140,31 +155,31 @@ class User(UserBase,Base):
     shelf = relationship('Shelf', backref='user', lazy='dynamic')
     downloads = relationship('Downloads', backref='user', lazy='dynamic')
     locale = Column(String(2), default="en")
-    random_books = Column(Integer, default=1)
-    language_books = Column(Integer, default=1)
-    series_books = Column(Integer, default=1)
-    category_books = Column(Integer, default=1)
-    hot_books = Column(Integer, default=1)
+    sidebar_view = Column(Integer, default=1)
+    #language_books = Column(Integer, default=1)
+    #series_books = Column(Integer, default=1)
+    #category_books = Column(Integer, default=1)
+    #hot_books = Column(Integer, default=1)
     default_language = Column(String(3), default="all")
 
 
-class Anonymous(AnonymousUserMixin,UserBase):
-    # anon_browse = None
-
+# Class for anonymous user is derived from User base and complets overrides methods and properties for the
+# anonymous user
+class Anonymous(AnonymousUserMixin, UserBase):
     def __init__(self):
         self.loadSettings()
 
     def loadSettings(self):
-        data=session.query(User).filter(User.role.op('&')(ROLE_ANONYMOUS) == ROLE_ANONYMOUS).first()
-        settings=session.query(Settings).first()
+        data = session.query(User).filter(User.role.op('&')(ROLE_ANONYMOUS) == ROLE_ANONYMOUS).first()
+        settings = session.query(Settings).first()
         self.nickname = data.nickname
         self.role = data.role
-        self.random_books = data.random_books
+        self.sidebar_view = data.sidebar_view
         self.default_language = data.default_language
-        self.language_books = data.language_books
-        self.series_books = data.series_books
-        self.category_books = data.category_books
-        self.hot_books = data.hot_books
+        #self.language_books = data.language_books
+        #self.series_books = data.series_books
+        #self.category_books = data.category_books
+        #self.hot_books = data.hot_books
         self.default_language = data.default_language
         self.locale = data.locale
         self.anon_browse = settings.config_anonbrowse
@@ -179,6 +194,7 @@ class Anonymous(AnonymousUserMixin,UserBase):
         return self.anon_browse
 
 
+# Baseclass representing Shelfs in calibre-web inapp.db
 class Shelf(Base):
     __tablename__ = 'shelf'
 
@@ -190,6 +206,8 @@ class Shelf(Base):
     def __repr__(self):
         return '<Shelf %r>' % self.name
 
+
+# Baseclass representing Relationship between books and Shelfs in Calibre-web in app.db (N:M)
 class BookShelf(Base):
     __tablename__ = 'book_shelf_link'
 
@@ -202,6 +220,7 @@ class BookShelf(Base):
         return '<Book %r>' % self.id
 
 
+# Baseclass representing Downloads from calibre-web in app.db
 class Downloads(Base):
     __tablename__ = 'downloads'
 
@@ -212,54 +231,79 @@ class Downloads(Base):
     def __repr__(self):
         return '<Download %r' % self.book_id
 
+
+# Baseclass for representing settings in app.db with email server settings and Calibre database settings
+# (application settings)
 class Settings(Base):
     __tablename__ = 'settings'
 
     id = Column(Integer, primary_key=True)
     mail_server = Column(String)
-    mail_port = Column(Integer, default = 25)
-    mail_use_ssl = Column(SmallInteger, default = 0)
+    mail_port = Column(Integer, default=25)
+    mail_use_ssl = Column(SmallInteger, default=0)
     mail_login = Column(String)
     mail_password = Column(String)
     mail_from = Column(String)
     config_calibre_dir = Column(String)
-    config_port = Column(Integer, default = 8083)
-    config_calibre_web_title = Column(String,default = u'Calibre-web')
-    config_books_per_page = Column(Integer, default = 60)
-    config_random_books = Column(Integer, default = 4)
-    config_title_regex = Column(String,default=u'^(A|The|An|Der|Die|Das|Den|Ein|Eine|Einen|Dem|Des|Einem|Eines)\s+')
-    config_log_level = Column(String, default=u'INFO')
-    config_uploading = Column(SmallInteger, default = 0)
-    config_anonbrowse = Column(SmallInteger, default = 0)
-    config_public_reg = Column(SmallInteger, default = 0)
+    config_port = Column(Integer, default=8083)
+    config_calibre_web_title = Column(String, default=u'Calibre-web')
+    config_books_per_page = Column(Integer, default=60)
+    config_random_books = Column(Integer, default=4)
+    config_title_regex = Column(String, default=u'^(A|The|An|Der|Die|Das|Den|Ein|Eine|Einen|Dem|Des|Einem|Eines)\s+')
+    config_log_level = Column(SmallInteger, default=logging.INFO)
+    config_uploading = Column(SmallInteger, default=0)
+    config_anonbrowse = Column(SmallInteger, default=0)
+    config_public_reg = Column(SmallInteger, default=0)
 
     def __repr__(self):
-        #return '<Smtp %r>' % (self.mail_server)
         pass
 
 
+# Class holds all application specific settings in calibre-web
+class Config:
+    def __init__(self):
+        self.config_main_dir = os.path.join(os.path.normpath(os.path.dirname(
+            os.path.realpath(__file__)) + os.sep + ".." + os.sep))
+        self.db_configured = None
+        self.loadSettings()
+
+    def loadSettings(self):
+        data = session.query(Settings).first()
+        self.config_calibre_dir = data.config_calibre_dir
+        self.config_port = data.config_port
+        self.config_calibre_web_title = data.config_calibre_web_title
+        self.config_books_per_page = data.config_books_per_page
+        self.config_random_books = data.config_random_books
+        self.config_title_regex = data.config_title_regex
+        self.config_log_level = data.config_log_level
+        self.config_uploading = data.config_uploading
+        self.config_anonbrowse = data.config_anonbrowse
+        self.config_public_reg = data.config_public_reg
+        if self.config_calibre_dir is not None: # and (self.db_configured is None or self.db_configured is True):
+            self.db_configured = True
+        else:
+            self.db_configured = False
+
+    @property
+    def get_main_dir(self):
+        return self.config_main_dir
+
+    #def is_Calibre_Configured(self):
+    #    return self.db_configured
+
+
+# Migrate database to current version, has to be updated after every database change. Currently migration from
+# everywhere to curent should work. Migration is done by checking if relevant coloums are existing, and than adding
+# rows with SQL commands
 def migrate_Database():
-    if session.query(User).filter(User.role.op('&')(ROLE_ANONYMOUS) == ROLE_ANONYMOUS).first() is None:
-        create_anonymous_user()
     try:
-        session.query(exists().where(User.random_books)).scalar()
+        session.query(exists().where(User.locale)).scalar()
         session.commit()
     except exc.OperationalError:  # Database is not compatible, some rows are missing
         conn = engine.connect()
-        conn.execute("ALTER TABLE user ADD column random_books INTEGER DEFAULT 1")
         conn.execute("ALTER TABLE user ADD column locale String(2) DEFAULT 'en'")
         conn.execute("ALTER TABLE user ADD column default_language String(3) DEFAULT 'all'")
         session.commit()
-    try:
-        session.query(exists().where(User.language_books)).scalar()
-        session.commit()
-    except exc.OperationalError:  # Database is not compatible, some rows are missing
-        conn = engine.connect()
-        conn.execute("ALTER TABLE user ADD column language_books INTEGER DEFAULT 1")
-        conn.execute("ALTER TABLE user ADD column series_books INTEGER DEFAULT 1")
-        conn.execute("ALTER TABLE user ADD column category_books INTEGER DEFAULT 1")
-        conn.execute("ALTER TABLE user ADD column hot_books INTEGER DEFAULT 1")
-        session.commit()
     try:
         session.query(exists().where(Settings.config_calibre_dir)).scalar()
         session.commit()
@@ -270,12 +314,34 @@ def migrate_Database():
         conn.execute("ALTER TABLE Settings ADD column `config_calibre_web_title` String DEFAULT 'Calibre-web'")
         conn.execute("ALTER TABLE Settings ADD column `config_books_per_page` INTEGER DEFAULT 60")
         conn.execute("ALTER TABLE Settings ADD column `config_random_books` INTEGER DEFAULT 4")
-        conn.execute("ALTER TABLE Settings ADD column `config_title_regex` String DEFAULT '^(A|The|An|Der|Die|Das|Den|Ein|Eine|Einen|Dem|Des|Einem|Eines)\s+'")
-        conn.execute("ALTER TABLE Settings ADD column `config_log_level` String DEFAULT 'INFO'")
+        conn.execute("ALTER TABLE Settings ADD column `config_title_regex` String DEFAULT "
+            "'^(A|The|An|Der|Die|Das|Den|Ein|Eine|Einen|Dem|Des|Einem|Eines)\s+'")
+        conn.execute("ALTER TABLE Settings ADD column `config_log_level` SmallInteger DEFAULT '" + logging.INFO + "'")
         conn.execute("ALTER TABLE Settings ADD column `config_uploading` SmallInteger DEFAULT 0")
         conn.execute("ALTER TABLE Settings ADD column `config_anonbrowse` SmallInteger DEFAULT 0")
         conn.execute("ALTER TABLE Settings ADD column `config_public_reg` SmallInteger DEFAULT 0")
         session.commit()
+    try:
+        create = False
+        session.query(exists().where(User.sidebar_view)).scalar()
+        session.commit()
+    except exc.OperationalError:  # Database is not compatible, some rows are missing
+        conn = engine.connect()
+        conn.execute("ALTER TABLE user ADD column `sidebar_view` Integer DEFAULT 1")
+        session.commit()
+        create=True
+    try:
+        if create:
+            conn.execute("SELET language_books FROM user")
+            session.commit()
+    except exc.OperationalError:
+        conn = engine.connect()
+        conn.execute("UPDATE user SET 'sidebar_view' = (random_books*"+str(SIDEBAR_RANDOM)+"+ language_books *"+
+                     str(SIDEBAR_LANGUAGE)+"+ series_books *"+str(SIDEBAR_SERIES)+"+ category_books *"+str(SIDEBAR_CATEGORY)+
+                     "+ hot_books *"+str(SIDEBAR_HOT)+"+"+str(SIDEBAR_AUTHOR)+"+"+str(DETAIL_RANDOM)+")")
+        session.commit()
+    if session.query(User).filter(User.role.op('&')(ROLE_ANONYMOUS) == ROLE_ANONYMOUS).first() is None:
+        create_anonymous_user()
 
 def create_default_config():
     settings = Settings()
@@ -307,10 +373,12 @@ def get_mail_settings():
 
     return data
 
+
+# Generate user Guest (translated text), as anoymous user, no rights
 def create_anonymous_user():
     user = User()
     user.nickname = _("Guest")
-    user.email='no@email'
+    user.email = 'no@email'
     user.role = ROLE_ANONYMOUS
     user.password = generate_password_hash('1')
 
@@ -322,10 +390,14 @@ def create_anonymous_user():
         pass
 
 
+# Generate User admin with admin123 password, and access to everything
 def create_admin_user():
     user = User()
     user.nickname = "admin"
     user.role = ROLE_USER + ROLE_ADMIN + ROLE_DOWNLOAD + ROLE_UPLOAD + ROLE_EDIT + ROLE_PASSWD
+    user.sidebar_view = DETAIL_RANDOM + SIDEBAR_LANGUAGE + SIDEBAR_SERIES + SIDEBAR_CATEGORY + SIDEBAR_HOT + \
+        SIDEBAR_RANDOM + SIDEBAR_AUTHOR
+
     user.password = generate_password_hash(DEFAULT_PASS)
 
     session.add(user)
@@ -335,10 +407,13 @@ def create_admin_user():
         session.rollback()
         pass
 
+
+# Open session for database connection
 Session = sessionmaker()
 Session.configure(bind=engine)
 session = Session()
 
+# generate database and admin and guest user, if no database is existing
 if not os.path.exists(dbpath):
     try:
         Base.metadata.create_all(engine)
@@ -349,3 +424,6 @@ if not os.path.exists(dbpath):
         pass
 else:
     migrate_Database()
+
+# Generate global Settings Object accecable from every file
+config = Config()