Cava Module (#662)

* First version of the cava module

* Update cava stuff

* Update themes for cava

* Update themes

* Handle cava visibility when null

* Add bar characters in options

---------

Co-authored-by: Ed Bennett <ed@dodimead.com>
Co-authored-by: Jas Singh <jaskiratpal.singh@outlook.com>

src/components/bar/modules/cava/helpers.ts

@@ -0,0 +1,64 @@
+import { bind, Variable } from 'astal';
+import { cavaService, mprisService } from 'src/lib/constants/services';
+import options from 'src/options';
+
+const {
+    showActiveOnly,
+    bars,
+    autoSensitivity,
+    lowCutoff,
+    highCutoff,
+    noiseReduction,
+    stereo,
+    channels,
+    framerate,
+    samplerate,
+} = options.bar.customModules.cava;
+
+/**
+ * Initializes a visibility tracker that updates the visibility status based on the active state and the presence of players.
+ *
+ * @param isVis - A variable that holds the visibility status.
+ */
+export function initVisibilityTracker(isVis: Variable<boolean>): void {
+    Variable.derive([bind(showActiveOnly), bind(mprisService, 'players')], (showActive, players) => {
+        isVis.set(cavaService !== null && (!showActive || players?.length > 0));
+    });
+}
+
+/**
+ * Initializes a settings tracker that updates the CAVA service settings based on the provided options.
+ */
+export function initSettingsTracker(): void {
+    const cava = cavaService;
+
+    if (!cava) {
+        return;
+    }
+
+    Variable.derive(
+        [
+            bind(bars),
+            bind(channels),
+            bind(framerate),
+            bind(samplerate),
+            bind(autoSensitivity),
+            bind(lowCutoff),
+            bind(highCutoff),
+            bind(noiseReduction),
+            bind(stereo),
+        ],
+        (bars, channels, framerate, samplerate, autoSens, lCutoff, hCutoff, noiseRed, isStereo) => {
+            cava.set_autosens(autoSens);
+            cava.set_low_cutoff(lCutoff);
+            cava.set_high_cutoff(hCutoff);
+            cava.set_noise_reduction(noiseRed);
+            cava.set_source('auto');
+            cava.set_stereo(isStereo);
+            cava.set_bars(bars);
+            cava.set_channels(channels);
+            cava.set_framerate(framerate);
+            cava.set_samplerate(samplerate);
+        },
+    );
+}