Inital commit checkpoint

common/MprisController.qml

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+pragma Singleton
+
+import Quickshell
+import Quickshell.Io
+import Quickshell.Services.Mpris
+
+Singleton {
+  readonly property list<MprisPlayer> activePlayers: Mpris.players.values
+  readonly property var meaningfulPlayers: filterDuplicatePlayers(activePlayers)
+  readonly property bool hasPlayers: meaningfulPlayers.length > 0
+  property int playerIndex: 0
+
+  function activePlayer() {
+    if (!hasPlayers) {
+      return null;
+    }
+    assertIndex();
+    return meaningfulPlayers[playerIndex];
+  }
+
+  function shiftPlayer(shift) {
+    playerIndex = (playerIndex + shift + activePlayers.length) % activePlayers.length
+  }
+
+  function assertIndex() {
+    if (playerIndex < 0 || playerIndex >= meaningfulPlayers.length) {
+      playerIndex = (playerIndex + activePlayers.length) % activePlayers.length
+    }
+  }
+
+  function filterDuplicatePlayers(players) {
+    let filtered = [];
+    let used = new Set();
+
+    for (let i = 0; i < players.length; ++i) {
+      if (used.has(i)) {
+        continue;
+      }
+      let p1 = players[i];
+      let group = [i];
+
+      // find duplicates
+      for (let j = i + 1; j < players.length; ++j) {
+        let p2 = players[j];
+        if (p1.trackTitle && p2.trackTitle && (
+          p1.trackTitle.includes(p2.trackTitle) ||
+          p2.trackTitle.includes(p1.trackTitle) ||
+          (p1.position - p2.position <= 2 && p1.length - p2.length <= 2)
+        )) {
+          group.push(j);
+        }
+      }
+
+      // pick with non-empty trackArtUrl
+
+      let chosenIdx = group.find(idx => players[idx].trackArtUrl && players[idx].trackArtUrl.length > 0);
+      if (chosenIdx === undefined) {
+        chosenIdx = group[0];
+      }
+
+      filtered.push(players[chosenIdx]);
+      group.forEach(idx => used.add(idx));
+    }
+    return filtered;
+  }
+}