Fix for janeczku#3131 (Enable/Disable "Separate Book Files from Library" issue)

Author: OzzieIsaacs

cps/admin.py

@@ -1716,6 +1716,13 @@ def _db_configuration_update_helper():
             db_change = True
     except Exception as ex:
         return _db_configuration_result('{}'.format(ex), gdrive_error)
+    config.config_calibre_split = to_save.get('config_calibre_split', 0) == "on"
+    if config.config_calibre_split:
+        split_dir = to_save.get("config_calibre_split_dir")
+        if not os.path.exists(split_dir):
+            return _db_configuration_result(_("Books path not valid"), gdrive_error)
+        else:
+            _config_string(to_save, "config_calibre_split_dir")
 
     if db_change or not db_valid or not config.db_configured \
       or config.config_calibre_dir != to_save["config_calibre_dir"]:
@@ -1741,8 +1748,6 @@ def _db_configuration_update_helper():
         calibre_db.update_config(config)
         if not os.access(os.path.join(config.config_calibre_dir, "metadata.db"), os.W_OK):
             flash(_("DB is not Writeable"), category="warning")
-    _config_string(to_save, "config_calibre_split_dir")
-    config.config_calibre_split = to_save.get('config_calibre_split', 0) == "on"
     calibre_db.update_config(config)
     config.save()
     return _db_configuration_result(None, gdrive_error)

cps/config_sql.py

@@ -182,26 +182,6 @@ def __repr__(self):
 class ConfigSQL(object):
     # pylint: disable=no-member
     def __init__(self):
-        '''self.config_calibre_uuid = None
-        self.config_calibre_split_dir = None
-        self.dirty = None
-        self.config_logfile = None
-        self.config_upload_formats = None
-        self.mail_gmail_token = None
-        self.mail_server_type = None
-        self.mail_server = None
-        self.config_log_level = None
-        self.config_allowed_column_value = None
-        self.config_denied_column_value = None
-        self.config_allowed_tags = None
-        self.config_denied_tags = None
-        self.config_default_show = None
-        self.config_default_role = None
-        self.config_keyfile = None
-        self.config_certfile = None
-        self.config_rarfile_location = None
-        self.config_kepubifypath = None
-        self.config_binariesdir = None'''
         self.__dict__["dirty"] = list()
 
     def init_config(self, session, secret_key, cli):

cps/embed_helper.py

@@ -35,9 +35,7 @@ def do_calibre_export(book_id, book_format):
         my_env = os.environ.copy()
         if config.config_calibre_split:
             my_env['CALIBRE_OVERRIDE_DATABASE_PATH'] = os.path.join(config.config_calibre_dir, "metadata.db")
-            library_path = config.config_calibre_split_dir
-        else:
-            library_path = config.config_calibre_dir
+        library_path = config.get_book_path()
         opf_command = [calibredb_binarypath, 'export', '--dont-write-opf', '--with-library', library_path,
                        '--to-dir', tmp_dir, '--formats', book_format, "--template", "{}".format(temp_file_name),
                        str(book_id)]