1 files changed, 15 insertions, 1 deletions

diff --git a/web/worker.mjs b/web/worker.mjs
index 0cb618b..12de1dc 100644
--- a/web/worker.mjs
+++ b/web/worker.mjs
@@ -8,6 +8,7 @@ const commands = [
   { name: "load solver data", exec: loadSolverDataFromStorage },
   { name: "download solver data", exec: downloadSolverData },
   { name: "generate solver data", exec: generateSolverData },
+  { name: "validate scramble", exec: validateScramble },
   { name: "solve", exec: solve },
 ];
 
@@ -45,7 +46,7 @@ async function loadSolverDataFromStorage(id, solver) {
   });
 
   if (!(await nissy.isSolverAvailable(solver))) {
-    async_return(false, "Error: solver " + arg.solver +
+    async_return(false, "Error: solver " + solver +
       " is not available in this version of nissy.");
     return;
   }
@@ -113,6 +114,19 @@ async function generateSolverData(id, solver) {
   }
 }
 
+// Check if the scramble is valid.
+// Argument: string (the scramble).
+async function validateScramble(id, arg) {
+  const async_return = (success) => postMessage({
+    command: "validate scramble",
+    id: id,
+    arg: success
+  });
+
+  var cube = new nissy.Cube();
+  async_return(cube.move(arg).ok());
+}
+
 // Solve the cube with the given options.
 // Argument: {
 //   solver: string