Feature: Allow GUI to detect available update and install it (#587)

* rename verify_update and give return value

* change verify_update call

* GUI: add update feature

auto_cpufreq/bin/auto_cpufreq.py

@@ -248,7 +248,9 @@ def main(config, daemon, debug, update, install, remove, live, log, monitor, sta
             elif subprocess.run(["bash", "-c", "command -v pacman >/dev/null 2>&1"]).returncode == 0 and subprocess.run(["bash", "-c", "pacman -Q auto-cpufreq >/dev/null 2>&1"]).returncode == 0:
                 print("Arch-based distribution with AUR support detected. Please refresh auto-cpufreq using your AUR helper.")
             else:
-                verify_update()
+                is_new_update = check_for_update()
+                if not is_new_update:
+                    return
                 ans = input("Do you want to update auto-cpufreq to the latest release? [Y/n]: ").strip().lower()
                 if not os.path.exists(custom_dir):
                     os.makedirs(custom_dir)

auto_cpufreq/bin/auto_cpufreq_gtk.py

@@ -11,10 +11,11 @@ from gi.repository import Gtk, GLib
 from auto_cpufreq.gui.app import ToolWindow
 
 def main():
+    GLib.set_prgname("auto-cpufreq")
     win = ToolWindow()
     win.connect("destroy", Gtk.main_quit)
     win.show_all()
-    GLib.set_prgname("auto-cpufreq")
+    win.handle_update()
     Gtk.main()
 
 if __name__ == "__main__":

auto_cpufreq/core.py

@@ -165,7 +165,10 @@ def app_version():
         except Exception as e:
             print(repr(e))
             pass
-def verify_update():
+
+def check_for_update():
+    # returns True if a new release is available from the GitHub repo
+
     # Specify the repository and package name
     # IT IS IMPORTANT TO  THAT IF THE REPOSITORY STRUCTURE IS CHANGED, THE FOLLOWING FUNCTION NEEDS TO BE UPDATED ACCORDINGLY
     # Fetch the latest release information from GitHub API
@@ -192,10 +195,11 @@ def verify_update():
     # Compare the latest version with the installed version and perform update if necessary
     if latest_version == installed_version:
         print("auto-cpufreq is up to date")
-        exit(0)
+        return False
     else:
         print(f"Updates are available,\nCurrent version: {installed_version}\nLatest version: {latest_version}")
         print("Note that your previous custom settings might be erased with the following update")
+        return True
     
 def new_update(custom_dir):
     os.chdir(custom_dir)

auto_cpufreq/gui/app.py

@@ -6,11 +6,15 @@ from gi.repository import Gtk, GLib, Gdk, Gio, GdkPixbuf
 
 import os
 import sys
+from contextlib import redirect_stdout
+from io import StringIO
+from subprocess import run, PIPE
+import shutil
 from threading import Thread
 
 sys.path.append("../")
-from auto_cpufreq.core import is_running
-from auto_cpufreq.gui.objects import RadioButtonView, SystemStatsLabel, CPUFreqStatsLabel, CurrentGovernorBox, DropDownMenu, DaemonNotRunningView
+from auto_cpufreq.core import is_running, check_for_update, remove_daemon, new_update
+from auto_cpufreq.gui.objects import RadioButtonView, SystemStatsLabel, CPUFreqStatsLabel, CurrentGovernorBox, DropDownMenu, DaemonNotRunningView, UpdateDialog
 
 if os.getenv("PKG_MARKER") == "SNAP":
     ICON_FILE = "/snap/auto-cpufreq/current/icon.png"
@@ -20,6 +24,8 @@ else:
     CSS_FILE = "/usr/local/share/auto-cpufreq/scripts/style.css"
 
 HBOX_PADDING = 20
+PKEXEC_ERROR = "Error executing command as another user: Not authorized\n\nThis incident has been reported.\n"
+
 
 class ToolWindow(Gtk.Window):
     def __init__(self):
@@ -72,6 +78,31 @@ class ToolWindow(Gtk.Window):
         box.pack_start(button, False, False, 0)
         self.add(box)
 
+    def handle_update(self):
+        new_stdout = StringIO()
+        with redirect_stdout(new_stdout):
+            is_new_update = check_for_update()
+            if not is_new_update:
+                return
+        captured_output = new_stdout.getvalue().splitlines()
+        dialog = UpdateDialog(self, captured_output[1], captured_output[2])
+        response = dialog.run()
+        dialog.destroy()
+        if response != Gtk.ResponseType.YES:
+            return
+        updater = run(["pkexec", "auto-cpufreq", "--update"], input="y\n", encoding="utf-8", stderr=PIPE)
+        if updater.stderr == PKEXEC_ERROR:
+            error = Gtk.MessageDialog(self, 0, Gtk.MessageType.ERROR, Gtk.ButtonsType.OK, "Error updating")
+            error.format_secondary_text("Authorization Failed")
+            error.run()
+            error.destroy()
+            return
+        success = Gtk.MessageDialog(self, 0, Gtk.MessageType.INFO, Gtk.ButtonsType.OK, "Update successful")
+        success.format_secondary_text("The app will now close. Please reopen to apply changes")
+        success.run()
+        success.destroy()
+        exit(0)
+
     def daemon_not_running(self):
         self.box = DaemonNotRunningView(self)
         self.add(self.box)

auto_cpufreq/gui/objects.py

@@ -242,6 +242,23 @@ class AboutDialog(Gtk.Dialog):
         self.box.pack_start(self.love, False, False, 0)
         self.show_all()
 
+class UpdateDialog(Gtk.Dialog):
+    def __init__(self, parent, current_version: str, latest_version: str):
+        super().__init__(title="Update Available", transient_for=parent)
+        self.box = self.get_content_area()
+        self.set_default_size(400, 100)
+        self.add_buttons("Update", Gtk.ResponseType.YES, "Cancel", Gtk.ResponseType.NO)
+        self.label = Gtk.Label(label="An update is available\n")
+        self.current_version = Gtk.Label(label=current_version + "\n")
+        self.latest_version = Gtk.Label(label=latest_version + "\n")
+
+        self.box.pack_start(self.label, True, False, 0)
+        self.box.pack_start(self.current_version, True, False, 0)
+        self.box.pack_start(self.latest_version, True, False, 0)
+
+        self.show_all()
+
+
 class ConfirmDialog(Gtk.Dialog):
     def __init__(self, parent, message: str):
         super().__init__(title="Confirmation", transient_for=parent)