Update flatpak-management.nix

flatpak-management.nix

@@ -0,0 +1,56 @@
+{ config, pkgs, lib, ... }:
+
+let
+  desiredFlatpaks = [
+    "org.mozilla.firefox"
+    "org.mozilla.thunderbird"
+  ];
+  flatpakScript = pkgs.writeScript "nix-flatpak-management" ''
+    #!${pkgs.runtimeShell} -e
+    ${pkgs.flatpak}/bin/flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+
+    # Get currently installed Flatpaks
+    installedFlatpaks=$(${pkgs.flatpak}/bin/flatpak list --app --columns=application)
+
+    # Users can decide what flatpaks they want to install so this is disabled
+    # Remove Flatpaks not in the desired list
+    # for installed in $installedFlatpaks; do
+    #   if ! echo ${lib.concatStringsSep " " desiredFlatpaks} | grep -q "$installed"; then
+    #     echo "Removing $installed because it's not in the desiredFlatpaks list."
+    #     ${pkgs.flatpak}/bin/flatpak uninstall -y --noninteractive "$installed"
+    #   fi
+    # done
+
+    # Install or re-install desired Flatpaks
+    for app in ${lib.concatStringsSep " " desiredFlatpaks}; do
+      echo "Ensuring $app is installed."
+      ${pkgs.flatpak}/bin/flatpak install -y --noninteractive flathub "$app"
+    done
+
+    # Remove unused Flatpaks
+    ${pkgs.flatpak}/bin/flatpak uninstall --unused -y --noninteractive
+
+    # Update all installed Flatpaks
+    ${pkgs.flatpak}/bin/flatpak update -y --noninteractive
+  '';
+in
+{
+  systemd.services.nix-flatpak-management = {
+    description = "Manage Flatpak installations";
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = "yes";
+      ExecStart = "${flatpakScript}";
+    };
+    wantedBy = ["multi-user.target"];
+  };
+
+  systemd.timers.nix-flatpak-management = {
+    description = "Run flatpak management periodically";
+    timerConfig = {
+      OnCalendar = "daily";
+      Persistent = "true";
+    };
+    wantedBy = ["timers.target"];
+  };
+}