fix: added required space arg to check-autobrr-space command

modules/nixos/services/apps/servarr/autobrr/default.nix

@@ -41,13 +41,26 @@ in {
         checkAutobrrSpace = pkgs.writeShellScriptBin "check-autobrr-space" ''
           set -euo pipefail
 
-          required_space=$((1024 * 1024 * 1024)) # 1 Tb
+          if [ "$#" -ne 2 ]; then
+            echo "Error: Missing argument" >&2
+            exit 1
+          fi
+
+          parse_space() {
+            local space="''${1^^}"
+            space="''${space%B}"
+            ${pkgs.coreutils}/bin/numfmt --from=iec "$space"
+          }
+
+          required_space=$(parse_space "$1")
+          torrent_size="$2"
           path="/mnt/nfs/servarr/torrents"
 
-          available_space=$(${pkgs.coreutils}/bin/df "$path" | \
-            ${pkgs.gawk}/bin/awk 'END {print $4}')
+          available_space=$(${pkgs.coreutils}/bin/df --output=avail -B1 "$path" | \
+            ${pkgs.gawk}/bin/awk 'END {print $1}')
+          remaining_space=$((available_space - torrent_size))
 
-          [ "$available_space" -gt "$required_space" ]
+          [ "$remaining_space" -gt "$required_space" ]
         '';
       in {
         path = [checkAutobrrSpace];