Add preferences dialog with TLS and timeout settings

- Add PreferencesDialog with settings for TLS verification and request timeout
- Update HttpClient to respect TLS verification setting
- Add GSettings schema keys for force-tls-verification and request-timeout
- Wire up preferences action to show dialog
- Settings changes apply immediately to HTTP session

data/cz.vesp.roster.gschema.xml

@@ -1,5 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <schemalist gettext-domain="roster">
 	<schema id="cz.vesp.roster" path="/cz/vesp/roster/">
+		<key name="force-tls-verification" type="b">
+			<default>true</default>
+			<summary>Force TLS verification</summary>
+			<description>When enabled, TLS certificates will be verified. Disable to test endpoints with self-signed or invalid certificates.</description>
+		</key>
+		<key name="request-timeout" type="i">
+			<default>30</default>
+			<summary>Request timeout</summary>
+			<description>Timeout for HTTP requests in seconds</description>
+		</key>
 	</schema>
 </schemalist>

src/http_client.py

@@ -19,7 +19,7 @@
 
 import gi
 gi.require_version('Soup', '3.0')
-from gi.repository import Soup, GLib
+from gi.repository import Soup, GLib, Gio
 
 import time
 from typing import Optional, Callable, Any
@@ -32,7 +32,36 @@ class HttpClient:
     def __init__(self):
         """Initialize HTTP client with reusable session."""
         self.session = Soup.Session.new()
-        self.session.set_timeout(30)  # 30 second timeout
+
+        # Load settings
+        self.settings = Gio.Settings.new('cz.vesp.roster')
+
+        # Initialize TLS verification flag
+        self.force_tls_verification = True
+
+        # Apply initial settings
+        self._apply_settings()
+
+        # Listen for settings changes
+        self.settings.connect('changed::force-tls-verification', self._on_settings_changed)
+        self.settings.connect('changed::request-timeout', self._on_settings_changed)
+
+    def _apply_settings(self):
+        """Apply settings to the HTTP session."""
+        # Store TLS verification preference (will be applied per-message)
+        self.force_tls_verification = self.settings.get_boolean('force-tls-verification')
+
+        # Apply timeout setting
+        timeout = self.settings.get_int('request-timeout')
+        self.session.set_timeout(timeout)
+
+    def _on_settings_changed(self, settings, key):
+        """Handle settings changes."""
+        self._apply_settings()
+
+    def _accept_all_certificates(self, msg, tls_certificate, tls_errors):
+        """Accept all TLS certificates when verification is disabled."""
+        return True  # Accept certificate regardless of errors
 
     def execute_request_async(self, request: HttpRequest, callback: Callable, user_data: Any = None):
         """
@@ -59,6 +88,11 @@ class HttpClient:
             callback(None, f"Invalid URL: {e}", user_data)
             return
 
+        # Handle TLS certificate verification
+        if not self.force_tls_verification:
+            # Connect signal to accept all certificates when verification is disabled
+            msg.connect('accept-certificate', self._accept_all_certificates)
+
         # Add headers
         headers = msg.get_request_headers()
         for key, value in request.headers.items():

src/main.py

@@ -25,6 +25,7 @@ gi.require_version('Adw', '1')
 
 from gi.repository import Gtk, Gio, Adw
 from .window import RosterWindow
+from .preferences_dialog import PreferencesDialog
 
 
 class RosterApplication(Adw.Application):
@@ -67,7 +68,9 @@ class RosterApplication(Adw.Application):
 
     def on_preferences_action(self, widget, _):
         """Callback for the app.preferences action."""
-        print('app.preferences action activated')
+        preferences = PreferencesDialog()
+        preferences.set_transient_for(self.props.active_window)
+        preferences.present()
 
     def on_shortcuts_action(self, widget, _):
         """Callback for the app.shortcuts action."""

src/meson.build

@@ -37,6 +37,7 @@ roster_sources = [
   'tab_manager.py',
   'constants.py',
   'icon_picker_dialog.py',
+  'preferences_dialog.py',
 ]
 
 install_data(roster_sources, install_dir: moduledir)

src/preferences-dialog.ui

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk" version="4.0"/>
+  <requires lib="Adw" version="1.0"/>
+
+  <template class="PreferencesDialog" parent="AdwPreferencesWindow">
+    <property name="title" translatable="yes">Preferences</property>
+    <property name="modal">True</property>
+    <property name="default-width">600</property>
+    <property name="default-height">400</property>
+
+    <child>
+      <object class="AdwPreferencesPage">
+        <property name="title" translatable="yes">General</property>
+        <property name="icon-name">preferences-system-symbolic</property>
+
+        <child>
+          <object class="AdwPreferencesGroup">
+            <property name="title" translatable="yes">Network</property>
+            <property name="description" translatable="yes">HTTP connection settings</property>
+
+            <child>
+              <object class="AdwSwitchRow" id="tls_verification_row">
+                <property name="title" translatable="yes">Force TLS Verification</property>
+                <property name="subtitle" translatable="yes">Verify TLS certificates for HTTPS connections. Disable to test endpoints with self-signed certificates.</property>
+              </object>
+            </child>
+
+            <child>
+              <object class="AdwSpinRow" id="timeout_row">
+                <property name="title" translatable="yes">Request Timeout</property>
+                <property name="subtitle" translatable="yes">Maximum time to wait for a response (in seconds)</property>
+                <property name="adjustment">
+                  <object class="GtkAdjustment">
+                    <property name="lower">5</property>
+                    <property name="upper">300</property>
+                    <property name="step-increment">5</property>
+                    <property name="page-increment">10</property>
+                    <property name="value">30</property>
+                  </object>
+                </property>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>

src/preferences_dialog.py

@@ -0,0 +1,49 @@
+# preferences_dialog.py
+#
+# Copyright 2025 Pavel Baksy
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from gi.repository import Adw, Gtk, Gio
+
+
+@Gtk.Template(resource_path='/cz/vesp/roster/preferences-dialog.ui')
+class PreferencesDialog(Adw.PreferencesWindow):
+    __gtype_name__ = 'PreferencesDialog'
+
+    tls_verification_row = Gtk.Template.Child()
+    timeout_row = Gtk.Template.Child()
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+
+        # Get settings
+        self.settings = Gio.Settings.new('cz.vesp.roster')
+
+        # Bind settings to UI
+        self.settings.bind(
+            'force-tls-verification',
+            self.tls_verification_row,
+            'active',
+            Gio.SettingsBindFlags.DEFAULT
+        )
+
+        self.settings.bind(
+            'request-timeout',
+            self.timeout_row,
+            'value',
+            Gio.SettingsBindFlags.DEFAULT
+        )

src/roster.gresource.xml

@@ -3,6 +3,7 @@
   <gresource prefix="/cz/vesp/roster">
     <file preprocess="xml-stripblanks">main-window.ui</file>
     <file preprocess="xml-stripblanks">shortcuts-dialog.ui</file>
+    <file preprocess="xml-stripblanks">preferences-dialog.ui</file>
     <file preprocess="xml-stripblanks">icon-picker-dialog.ui</file>
     <file preprocess="xml-stripblanks">widgets/header-row.ui</file>
     <file preprocess="xml-stripblanks">widgets/history-item.ui</file>