Implement logging

lector/__main__.py

@@ -23,8 +23,6 @@ import logging
 import hashlib
 import pathlib
 
-from PyQt5 import QtWidgets, QtGui, QtCore
-
 # This allows for the program to be launched from the
 # dir where it's been copied instead of needing to be
 # installed
@@ -32,20 +30,7 @@ install_dir = os.path.realpath(__file__)
 install_dir = pathlib.Path(install_dir).parents[1]
 sys.path.append(str(install_dir))
 
-# Initialize logging
-# This is outside the UI declaration to allow sharing
-# the object across modules without explicit redeclaration
-logger_filename = os.path.join(
-    QtCore.QStandardPaths.writableLocation(QtCore.QStandardPaths.AppDataLocation),
-    'Lector',
-    'Lector.log')
-logging.basicConfig(
-    filename=logger_filename,
-    filemode='a',
-    format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
-    datefmt='%H:%M:%S',
-    level=logging.ERROR)
-logger = logging.getLogger('lector.main')
+from PyQt5 import QtWidgets, QtGui, QtCore
 
 from lector import database
 from lector import sorter
@@ -100,6 +85,10 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         Settings(self).read_settings()  # This should populate all variables that need
                                         # to be remembered across sessions
 
+        # Initialize logging
+        self.logger = init_logging(self.settings['log_level'])
+        self.logger.log(60, 'Application started')
+
         # Initialize icon factory
         self.QImageFactory = QImageFactory(self)
 
@@ -256,7 +245,7 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
 
         # Get list of available parsers
         self.available_parsers = '*.' + ' *.'.join(sorter.available_parsers)
-        logger.info('Available parsers: ' + self.available_parsers)
+        self.logger.info('Available parsers: ' + self.available_parsers)
 
         # The Library tab gets no button
         self.tabWidget.tabBar().setTabButton(
@@ -423,7 +412,7 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         if not file_paths:
             return
 
-        logger.info(
+        self.logger.info(
             'Attempting to open: ' + ', '.join(file_paths))
 
         contents = sorter.BookSorter(
@@ -437,7 +426,7 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         # Notification feedback in case all books return nothing
 
         if not contents:
-            logger.error('No parseable files found')
+            self.logger.error('No parseable files found')
             return
 
         successfully_opened = []
@@ -447,7 +436,7 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
             file_data = contents[i]
             Tab(file_data, self)
             successfully_opened.append(file_data['path'])
-        logger.info(
+        self.logger.info(
             'Successfully opened: ' + ', '.join(file_paths))
 
         if self.settings['last_open_tab'] == 'library':
@@ -1049,6 +1038,21 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         QtWidgets.qApp.exit()
 
 
+def init_logging(log_level):
+    location_prefix = QtCore.QStandardPaths.writableLocation(
+        QtCore.QStandardPaths.AppDataLocation)
+    os.makedirs(location_prefix, exist_ok=True)
+    logger_filename = os.path.join(location_prefix, 'Lector.log')
+    logging.basicConfig(
+        filename=logger_filename,
+        filemode='a',
+        format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
+        datefmt='%Y/%M/%d  %H:%M:%S',
+        level=log_level)
+    logging.addLevelName(60, 'HammerTime')  ## Messages that MUST be logged
+    return logging.getLogger('lector.main')
+
+
 def main():
     app = QtWidgets.QApplication(sys.argv)
     app.setApplicationName('Lector')  # This is needed for QStandardPaths
@@ -1063,8 +1067,7 @@ def main():
     translations_out_string = '(Translations found)'
     if not translations_found:
         translations_out_string = '(No translations found)'
-    log_string = f'Locale: {QtCore.QLocale.system().name()}' + translations_out_string
-    logger.info(log_string)
+    print(f'Locale: {QtCore.QLocale.system().name()}' + translations_out_string)
 
     form = MainUI()
     form.show()
@@ -1073,5 +1076,4 @@ def main():
 
 
 if __name__ == '__main__':
-    logger.info('Application start')
     main()