flake: use enum for mode option

flake.nix

@@ -6,7 +6,7 @@
   outputs = { self, nixpkgs }:
     let
       lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101";
-      version = "2.0.0";
+      version = "2.0.4";
       supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
       forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
       nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
@@ -41,7 +41,6 @@
 
             };
             type = types.attrsOf (types.submodule ({ name, ... }: {
-#              freeformType = settingsFormat.type;
               options = {
                 source = mkOption {
                   type = types.str;
@@ -78,7 +77,7 @@
                   '';
                 };
                 mode = mkOption {
-                  type = types.str;
+                  type = types.enum [ "hardlink" "symlink" "move" "copy" ];
                   default = "hardlink";
                   description = ''
                     Organization mode, one of [ hardlink symlink move copy ].
@@ -101,11 +100,11 @@
                 wantedBy = [
                   "default.target"
                 ];
-                preStart = if !sync.skipFullSync then ''
+                preStart = if !sync.skipFullSync then (''
                   mkdir -p ${sync.target}
-                  photocatalog -source ${sync.source} -target ${sync.target} -mode ${sync.mode}
-                '' else null;
-                script = "photocatalog -source ${sync.source} -target ${sync.target} -skip-full-sync -watch -mode ${sync.mode}";
+                  photocatalog -source ${sync.source} -target ${sync.target} -mode ${sync.mode} ${if sync.overwrite then "-overwrite" else ""}
+                '') else null;
+                script = "photocatalog -source ${sync.source} -target ${sync.target} -skip-full-sync -watch -mode ${sync.mode} ${if sync.overwrite then "-overwrite" else ""}";
                 serviceConfig = {
                   Type="simple";
                   Restart="no";

internal/organizer/organizer.go

@@ -302,9 +302,13 @@ func (o *Organizer) ensureTargetPath(targetPath string) error {
 	for _, part := range strings.Split(relPath, string(filepath.Separator)) {
 		dir = filepath.Join(dir, part)
 
-		if err := os.Mkdir(dir, o.dirMode); err != nil && !os.IsExist(err) {
+		if err := os.Mkdir(dir, os.ModePerm); err != nil && !os.IsExist(err) {
 			return fmt.Errorf("create target directory path at %s: %w", dir, err)
 		}
+
+		if err := os.Chmod(dir, os.ModePerm&o.dirMode); err != nil {
+			return fmt.Errorf("chmod directory %s: %w", dir, err)
+		}
 	}
 
 	return nil