syncthing: add yncthing-resolve-conflicts script

modules/nixos/syncthing/default.nix

@@ -1,10 +1,17 @@
-{ config, lib, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 
 let
   cfg = config.services.syncthing;
   guiPort = 8384;
   transferPort = 22000;
   fqdn = "sync.local";
+  # TODO: look into https://github.com/dschrempf/syncthing-resolve-conflicts
+  syncthing-resolve-conflicts = pkgs.callPackage ./syncthing-resolve-conflicts.nix { };
 
   user = "sid";
   dirs = [
@@ -81,6 +88,10 @@ in
     };
   };
 
+  environment.systemPackages = [
+    syncthing-resolve-conflicts
+  ];
+
   sops.secrets."syncthing/gui-pw" = {
     owner = cfg.user;
     group = cfg.group;

modules/nixos/syncthing/syncthing-resolve-conflicts.nix

@@ -0,0 +1,13 @@
+{
+  writeShellApplication,
+  ...
+}:
+
+let
+  name = "syncthing-resolve-conflicts";
+  text = builtins.readFile ./${name}.sh;
+in
+writeShellApplication {
+  inherit name text;
+  meta.mainProgram = name;
+}

modules/nixos/syncthing/syncthing-resolve-conflicts.sh

@@ -0,0 +1,28 @@
+DRY_RUN=true
+
+if [[ "${1:-}" == "--apply" ]]; then
+    DRY_RUN=false
+    echo "--- RUNNING IN LIVE MODE: Files will be renamed ---"
+else
+    echo "--- RUNNING IN DRY-RUN MODE: No changes will be made ---"
+    echo "--- Use 'syncthing-resolve-conflicts --apply' to perform the rename ---"
+fi
+
+find . -type f -name "*sync-conflict*" ! -name "*.db" -print0 | while IFS= read -r -d '' file; do
+    new=$(echo "$file" | sed -E 's/\.sync-conflict-[0-9]{8}-[0-9]{6}-[A-Z0-9]+//')
+
+    if [[ "$file" != "$new" ]]; then
+        if [ "$DRY_RUN" = true ]; then
+            echo "[DRY-RUN] Would rename: '$file' -> '$new'"
+        else
+            if [[ -f "$new" ]]; then
+                echo "[SKIP] Target already exists: '$new'"
+            else
+                echo "Renaming: '$file' -> '$new'"
+                mv "$file" "$new"
+            fi
+        fi
+    fi
+done
+
+echo "--- Done ---"