add option to clear the image cache

gotify_tray/database/cache.py

@@ -32,6 +32,9 @@ class Cache(object):
         self.cache_dir = os.path.join(path, "cache")
         os.makedirs(self.cache_dir, exist_ok=True)
 
+    def directory(self) -> str:
+        return self.cache_dir
+    
     def clear(self):
         self.cursor.execute("DELETE FROM cache")
         self.database.commit()

gotify_tray/gui/designs/widget_settings.py

@@ -171,6 +171,22 @@ class Ui_Dialog(object):
         self.horizontalLayout_4.addItem(spacerItem5)
         self.gridLayout_2.addLayout(self.horizontalLayout_4, 0, 0, 1, 1)
         self.verticalLayout.addWidget(self.groupbox_image_popup)
+        self.groupBox_cache = QtWidgets.QGroupBox(self.tab_advanced)
+        self.groupBox_cache.setObjectName("groupBox_cache")
+        self.horizontalLayout_6 = QtWidgets.QHBoxLayout(self.groupBox_cache)
+        self.horizontalLayout_6.setObjectName("horizontalLayout_6")
+        self.pb_clear_cache = QtWidgets.QPushButton(self.groupBox_cache)
+        self.pb_clear_cache.setObjectName("pb_clear_cache")
+        self.horizontalLayout_6.addWidget(self.pb_clear_cache)
+        self.pb_open_cache_dir = QtWidgets.QPushButton(self.groupBox_cache)
+        self.pb_open_cache_dir.setObjectName("pb_open_cache_dir")
+        self.horizontalLayout_6.addWidget(self.pb_open_cache_dir)
+        self.label_cache = QtWidgets.QLabel(self.groupBox_cache)
+        self.label_cache.setObjectName("label_cache")
+        self.horizontalLayout_6.addWidget(self.label_cache)
+        spacerItem6 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Minimum)
+        self.horizontalLayout_6.addItem(spacerItem6)
+        self.verticalLayout.addWidget(self.groupBox_cache)
         self.groupBox_logging = QtWidgets.QGroupBox(self.tab_advanced)
         self.groupBox_logging.setObjectName("groupBox_logging")
         self.gridLayout_6 = QtWidgets.QGridLayout(self.groupBox_logging)
@@ -178,8 +194,8 @@ class Ui_Dialog(object):
         self.combo_logging = QtWidgets.QComboBox(self.groupBox_logging)
         self.combo_logging.setObjectName("combo_logging")
         self.gridLayout_6.addWidget(self.combo_logging, 0, 1, 1, 1)
-        spacerItem6 = QtWidgets.QSpacerItem(190, 20, QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Minimum)
+        spacerItem7 = QtWidgets.QSpacerItem(190, 20, QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Minimum)
-        self.gridLayout_6.addItem(spacerItem6, 0, 3, 1, 1)
+        self.gridLayout_6.addItem(spacerItem7, 0, 3, 1, 1)
         self.pb_open_log = QtWidgets.QPushButton(self.groupBox_logging)
         self.pb_open_log.setMaximumSize(QtCore.QSize(30, 16777215))
         self.pb_open_log.setObjectName("pb_open_log")
@@ -188,8 +204,8 @@ class Ui_Dialog(object):
         self.label_logging.setObjectName("label_logging")
         self.gridLayout_6.addWidget(self.label_logging, 0, 0, 1, 1)
         self.verticalLayout.addWidget(self.groupBox_logging)
-        spacerItem7 = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Expanding)
+        spacerItem8 = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Expanding)
-        self.verticalLayout.addItem(spacerItem7)
+        self.verticalLayout.addItem(spacerItem8)
         self.tabWidget.addTab(self.tab_advanced, "")
         self.gridLayout.addWidget(self.tabWidget, 0, 0, 1, 1)
 
@@ -238,6 +254,10 @@ class Ui_Dialog(object):
         self.label_2.setToolTip(_translate("Dialog", "Maximum pop-up height"))
         self.label_2.setText(_translate("Dialog", "Height"))
         self.spin_popup_h.setToolTip(_translate("Dialog", "Maximum pop-up height"))
+        self.groupBox_cache.setTitle(_translate("Dialog", "Cache"))
+        self.pb_clear_cache.setText(_translate("Dialog", "Clear"))
+        self.pb_open_cache_dir.setText(_translate("Dialog", "Open"))
+        self.label_cache.setText(_translate("Dialog", "TextLabel"))
         self.groupBox_logging.setTitle(_translate("Dialog", "Logging"))
         self.pb_open_log.setToolTip(_translate("Dialog", "Open logfile"))
         self.pb_open_log.setText(_translate("Dialog", "..."))

gotify_tray/gui/designs/widget_settings.ui

@@ -400,6 +400,49 @@
          </layout>
         </widget>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_cache">
+         <property name="title">
+          <string>Cache</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout_6">
+          <item>
+           <widget class="QPushButton" name="pb_clear_cache">
+            <property name="text">
+             <string>Clear</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="pb_open_cache_dir">
+            <property name="text">
+             <string>Open</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLabel" name="label_cache">
+            <property name="text">
+             <string>TextLabel</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="horizontalSpacer_6">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>40</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
        <item>
         <widget class="QGroupBox" name="groupBox_logging">
          <property name="title">

gotify_tray/gui/widgets/SettingsDialog.py

@@ -2,12 +2,12 @@ import logging
 import platform
 import os
 
-from gotify_tray.database import Settings
+from gotify_tray.database import Cache, Settings
 from gotify_tray.gotify import GotifyMessageModel
 from gotify_tray.gui.models import MessagesModelItem
 from . import MessageWidget
 from gotify_tray.utils import get_icon, verify_server, open_file
-from gotify_tray.tasks import ExportSettingsTask, ImportSettingsTask
+from gotify_tray.tasks import ExportSettingsTask, ImportSettingsTask, CacheSizeTask, ClearCacheTask
 from gotify_tray.gui.themes import get_themes
 from PyQt6 import QtCore, QtGui, QtWidgets
 
@@ -91,6 +91,8 @@ class SettingsDialog(QtWidgets.QDialog, Ui_Dialog):
         )
         self.spin_popup_w.setValue(settings.value("ImagePopup/w", type=int))
         self.spin_popup_h.setValue(settings.value("ImagePopup/h", type=int))
+        self.label_cache.setText("0 MB")
+        self.compute_cache_size()
 
     def add_message_widget(self):
         self.message_widget = MessageWidget(
@@ -108,6 +110,11 @@ class SettingsDialog(QtWidgets.QDialog, Ui_Dialog):
         )
         self.layout_fonts_message.addWidget(self.message_widget)
 
+    def compute_cache_size(self):
+        self.cache_size_task = CacheSizeTask()
+        self.cache_size_task.size.connect(lambda size: self.label_cache.setText(f"{round(size/1e6, 1)} MB"))
+        self.cache_size_task.start()
+
     def change_server_info_callback(self):
         self.server_changed = verify_server(force_new=True, enable_import=False)
 
@@ -180,6 +187,11 @@ class SettingsDialog(QtWidgets.QDialog, Ui_Dialog):
             settings.clear()
             self.quit_requested.emit()
 
+    def clear_cache_callback(self):
+        self.clear_cache_task = ClearCacheTask()        
+        self.clear_cache_task.start()
+        self.label_cache.setText("0 MB")
+
     def link_callbacks(self):
         self.buttonBox.button(
             QtWidgets.QDialogButtonBox.StandardButton.Apply
@@ -224,6 +236,8 @@ class SettingsDialog(QtWidgets.QDialog, Ui_Dialog):
         self.groupbox_image_popup.toggled.connect(self.settings_changed_callback)
         self.spin_popup_w.valueChanged.connect(self.settings_changed_callback)
         self.spin_popup_h.valueChanged.connect(self.settings_changed_callback)
+        self.pb_clear_cache.clicked.connect(self.clear_cache_callback)
+        self.pb_open_cache_dir.clicked.connect(lambda: open_file(Cache().directory()))
 
     def apply_settings(self):
         # Priority

gotify_tray/tasks.py

@@ -1,11 +1,14 @@
 import abc
+import glob
 import logging
 import time
+import os
 
+from functools import reduce
 from PyQt6 import QtCore
 from PyQt6.QtCore import pyqtSignal
 
-from gotify_tray.database import Downloader, Settings
+from gotify_tray.database import Cache, Downloader, Settings
 from gotify_tray.gotify.api import GotifyClient
 from gotify_tray.gotify.models import GotifyVersionModel
 from gotify_tray.utils import get_image
@@ -229,3 +232,19 @@ class ProcessMessagesTask(BaseTask):
 
             # Prevent locking up the UI when there are a lot of messages with images ready at the same time
             time.sleep(0.001)
+
+
+class CacheSizeTask(BaseTask):
+    size = pyqtSignal(int)
+
+    def task(self):        
+        cache_dir = Cache().directory()
+        if os.path.exists(cache_dir):
+            cache_size_bytes = reduce(lambda x, f: x + os.path.getsize(f), glob.glob(os.path.join(cache_dir, "*")), 0)
+            self.size.emit(cache_size_bytes)
+
+class ClearCacheTask(BaseTask):        
+    def task(self):
+        cache = Cache()
+        cache.clear()
+