Enable nextcloud on alto

modules/system/nextcloud/backups.nix

@@ -0,0 +1,51 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  cfg = config.myConfig.nextcloud;
+
+  user = config.users.users.nextcloud.name;
+  inherit (config.users.users.nextcloud) group;
+in
+{
+  options.myConfig.nextcloud.backups.enable = lib.mkEnableOption "";
+
+  config = lib.mkIf cfg.backups.enable {
+    systemd.tmpfiles.rules = [ "d ${cfg.dataDir}/backup 700 ${user} ${group} -" ];
+
+    myConfig.resticBackup.nextcloud = {
+      inherit user;
+      healthchecks.enable = true;
+
+      extraConfig = {
+        backupPrepareCommand = ''
+          ${lib.getExe' config.services.nextcloud.occ "nextcloud-occ"} maintenance:mode --on
+          ${lib.getExe' config.services.postgresql.package "pg_dump"} nextcloud --format=custom --file=${cfg.dataDir}/backup/db.dump
+        '';
+        backupCleanupCommand = ''
+          ${lib.getExe' config.services.nextcloud.occ "nextcloud-occ"} maintenance:mode --off
+        '';
+        paths = [
+          "${cfg.dataDir}/home/data"
+          "${cfg.dataDir}/home/config/config.php"
+          "${cfg.dataDir}/backup"
+        ];
+      };
+    };
+
+    environment.systemPackages = [
+      (pkgs.writeShellApplication {
+        name = "nextcloud-restore";
+        text = ''
+          sudo --user=${user} ${lib.getExe' config.services.nextcloud.occ "nextcloud-occ"} maintenance:mode --on
+          sudo --user=${user} restic-nextcloud restore --target / latest
+          sudo --user=${user} pg_restore --clean --if-exists --dbname nextcloud ${cfg.dataDir}/backup/db.dump
+          sudo --user=${user} ${lib.getExe' config.services.nextcloud.occ "nextcloud-occ"} maintenance:mode --off
+        '';
+      })
+    ];
+  };
+}