[AGS] Bar: Done (WiFi still missing, will be added at some later point)

config/astal/util/brightness.ts

@@ -0,0 +1,82 @@
+import GObject, { register, property } from "astal/gobject"
+import { monitorFile, readFileAsync } from "astal/file"
+import { exec, execAsync } from "astal/process"
+
+const get = (args: string) => Number(exec(`brightnessctl ${args}`))
+const screen = exec(`bash -c "ls -w1 /sys/class/backlight | head -1"`)
+const kbd = exec(`bash -c "ls -w1 /sys/class/leds | head -1"`)
+
+@register({ GTypeName: "Brightness" })
+export default class Brightness extends GObject.Object {
+    static instance: Brightness
+    static get_default() {
+        if (!this.instance)
+            this.instance = new Brightness()
+        
+        return this.instance
+    }
+
+    #kbdMax = get(`--device ${kbd} max`)
+    #kbd = get(`--device ${kbd} get`)
+    #screenMax = get("max")
+    #screen = get("get") / (get("max") || 1)
+    #screenAvailable = false
+
+    @property(Boolean)
+    get screenAvailable() { return this.#screenAvailable }
+
+    @property(Number)
+    get kbd() { return this.#kbd }
+
+    set kbd(value) {
+        if (value < 0 || value > this.#kbdMax)
+            return
+
+        execAsync(`brightnessctl -d ${kbd} s ${value} -q`).then(() => {
+            this.#kbd = value
+            this.notify("kbd")
+        })
+    }
+
+    @property(Number)
+    get screen() { return this.#screen }
+
+    set screen(percent) {
+        if (percent < 0)
+            percent = 0
+
+        if (percent > 1)
+            percent = 1
+
+        execAsync(`brightnessctl set ${Math.floor(percent * 100)}% -q`).then(() => {
+            this.#screen = percent
+            this.notify("screen")
+        })
+    }
+
+    constructor() {
+        super()
+
+        const screenPath = `/sys/class/backlight/${screen}/brightness`
+        const kbdPath = `/sys/class/leds/${kbd}/brightness`
+
+        monitorFile(screenPath, async f => {
+            const v = await readFileAsync(f)
+            this.#screen = Number(v) / this.#screenMax
+            this.notify("screen")
+        })
+
+        monitorFile(kbdPath, async f => {
+            const v = await readFileAsync(f)
+            this.#kbd = Number(v) / this.#kbdMax
+            this.notify("kbd")
+        })
+
+        // Check if there is a screen available
+        try {
+            get( 'g -c backlight' );
+        } catch ( _ ) {
+            this.#screenAvailable = false;
+        }
+    }
+}