Add obsidian css snippets

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/gui/obsidian/options.nix

@@ -83,6 +83,12 @@ in
             "word-count"
           ];
         };
+
+        cssSnippets = mkOption {
+          description = "CSS snippets to install.";
+          type = raw;
+          default = [ ];
+        };
       };
 
       vaults = mkOption {
@@ -122,6 +128,12 @@ in
                     type = listOf (enum corePlugins);
                     default = cfg.sharedSettings.corePlugins;
                   };
+
+                  cssSnippets = mkOption {
+                    description = "CSS snippets to install.";
+                    type = listOf path;
+                    default = cfg.sharedSettings.cssSnippets;
+                  };
                 };
               };
 
@@ -152,7 +164,14 @@ in
             mkAppearance = vault: {
               name = "${vault.target}/.obsidian/appearance.json";
               value = {
-                source = (pkgs.formats.json { }).generate "appearance.json" vault.settings.appearance;
+                source = (pkgs.formats.json { }).generate "appearance.json" (
+                  vault.settings.appearance
+                  // {
+                    enabledCssSnippets = builtins.map (
+                      snippet: lib.strings.removeSuffix ".css" (builtins.baseNameOf snippet)
+                    ) vault.settings.cssSnippets;
+                  }
+                );
               };
             };
             mkCorePlugins = vault: [
@@ -176,6 +195,14 @@ in
                 };
               }
             ];
+            mkCssSnippets =
+              vault:
+              builtins.map (snippet: {
+                name = "${vault.target}/.obsidian/snippets/${builtins.baseNameOf snippet}";
+                value = {
+                  source = snippet;
+                };
+              }) vault.settings.cssSnippets;
           in
           builtins.listToAttrs (
             lib.lists.flatten (
@@ -183,6 +210,7 @@ in
                 (mkApp vault)
                 (mkAppearance vault)
                 (mkCorePlugins vault)
+                (mkCssSnippets vault)
               ]) vaults
             )
           );