Add feature to restore script content to a specific version on history page

static/js/mithril/FunctionHistory.js

@@ -74,10 +74,12 @@ const FunctionHistory = {
       m(".flex-1.p-4.bg-white.dark:bg-gray-900", [
         mode === "view"
           ? m("div", [
-              m(
-                "h3.text-lg.font-semibold.mb-2",
-                `Version ${selectedVersion.version_number}`
-              ),
+              m("div.flex.justify-between.items-center.mb-2", [
+                  m("h3.text-lg.font-semibold", `Version ${selectedVersion.version_number}`),
+                  m("button.bg-blue-500.hover:bg-blue-600.text-white.px-3.py-1.rounded.text-sm", {
+                      onclick: () => FunctionHistory.restoreVersion(vnode)
+                  }, "Restore this Version")
+              ]),
               m("div#editor-history", { style: "height: 600px;" }),
             ])
           : m("div", [
@@ -175,6 +177,33 @@ const FunctionHistory = {
     }
   },
 
+  restoreVersion: async function (vnode) {
+      const { selectedVersion } = vnode.state;
+      const { restore_url } = vnode.attrs;
+      
+      if (!confirm(`Are you sure you want to restore version ${selectedVersion.version_number}? This will create a new version with this content.`)) {
+          return;
+      }
+
+      try {
+          const response = await m.request({
+              method: "POST",
+              url: restore_url,
+              body: { version_number: selectedVersion.version_number }
+          });
+
+          if (response.status === "success") {
+              Alert.show(response.message, "success");
+              // Reload the page to show the new version
+              window.location.reload();
+          } else {
+              Alert.show(response.message || "Error restoring version", "error");
+          }
+      } catch (err) {
+          Alert.show(err.message || "Error restoring version", "error");
+      }
+  },
+
   onremove: function (vnode) {
     if (vnode.state.editor) {
       vnode.state.editor.destroy();