warn on low battery

.config/quickshell/modules/bar/Bar.qml

@@ -241,7 +241,7 @@ Scope {
                             Layout.alignment: Qt.AlignVCenter
                         }
 
-                        Battery {
+                        BatteryIndicator {
                             visible: (barRoot.useShortenedForm < 2 && UPower.displayDevice.isLaptopBattery)
                             Layout.alignment: Qt.AlignVCenter
                         }

.config/quickshell/modules/bar/BatteryIndicator.qml

@@ -1,5 +1,6 @@
 import "root:/modules/common"
 import "root:/modules/common/widgets"
+import "root:/services"
 import QtQuick
 import QtQuick.Layouts
 import Quickshell
@@ -9,11 +10,11 @@ import Quickshell.Services.UPower
 Rectangle {
     id: root
     property bool borderless: ConfigOptions.bar.borderless
-    readonly property var chargeState: UPower.displayDevice.state
-    readonly property bool isCharging: chargeState == UPowerDeviceState.Charging
-    readonly property bool isPluggedIn: isCharging || chargeState == UPowerDeviceState.PendingCharge
-    readonly property real percentage: UPower.displayDevice.percentage
-    readonly property bool isLow: percentage <= ConfigOptions.bar.batteryLowThreshold / 100
+    readonly property var chargeState: Battery.chargeState
+    readonly property bool isCharging: Battery.isCharging
+    readonly property bool isPluggedIn: Battery.isPluggedIn
+    readonly property real percentage: Battery.percentage
+    readonly property bool isLow: percentage <= ConfigOptions.battery.low / 100
     readonly property color batteryLowBackground: Appearance.m3colors.darkmode ? Appearance.m3colors.m3error : Appearance.m3colors.m3errorContainer
     readonly property color batteryLowOnBackground: Appearance.m3colors.darkmode ? Appearance.m3colors.m3errorContainer : Appearance.m3colors.m3error
 

.config/quickshell/services/Battery.qml

@@ -0,0 +1,29 @@
+pragma Singleton
+
+import "root:/modules/common"
+import QtQuick
+import QtQuick.Layouts
+import Quickshell
+import Quickshell.Io
+import Quickshell.Hyprland
+import Quickshell.Services.UPower
+
+Singleton {
+    property bool available: UPower.displayDevice.isLaptopBattery
+    property var chargeState: UPower.displayDevice.state
+    property bool isCharging: chargeState == UPowerDeviceState.Charging
+    property bool isPluggedIn: isCharging || chargeState == UPowerDeviceState.PendingCharge
+    property real percentage: UPower.displayDevice.percentage
+
+    property bool isLow: percentage <= ConfigOptions.battery.low / 100
+    property bool isCritical: percentage <= ConfigOptions.battery.critical / 100
+    property bool isSuspending: percentage <= ConfigOptions.battery.suspend / 100
+
+    onIsLowChanged: {
+        if (available && isLow) Hyprland.dispatch(`exec notify-send "Low battery" "Consider plugging in your device" -u critical -a "Shell"`)
+    }
+
+    onIsCriticalChanged: {
+        if (available && isCritical) Hyprland.dispatch(`exec notify-send "Critically low battery" "🙏 I ask for pleas charge\nAutomatic suspend triggers at ${ConfigOptions.battery.suspend}%" -u critical -a "Shell"`)
+    }
+}