fix: support branch names with @ in tarball resolver

Author: aprendendofelipe

packages/app/fixtures/workflow_run.in_progress.json

@@ -6,7 +6,7 @@
       "id": 9394452824,
       "name": "Preview & Release",
       "node_id": "WFR_kwLOLiqblM8AAAACL_P5WA",
-      "head_branch": "main",
+      "head_branch": "@test/@chaotic.branch/name-@v1.@",
       "head_sha": "ded05e838c418096e5dd77a29101c8af9e73daea",
       "path": ".github/workflows/ci.yml",
       "display_title": "chore: 007 (#94)",

packages/app/server/middleware/tarball-resolver.ts

@@ -8,7 +8,10 @@ const ALLOWED_METHODS = new Set(["GET", "HEAD"]);
 export default eventHandler(async (event) => {
   let decodedPath: string;
   try {
-    const path = event.path.split("?")[0];
+    const path = event.path
+      .split("?")[0]
+      // yarn support
+      .replace(/\.tgz$/, "");
     decodedPath = decodeURIComponent(path);
   } catch {
     throw createError({
@@ -17,14 +20,21 @@ export default eventHandler(async (event) => {
     });
   }
 
-  const lastAtIndex = decodedPath.lastIndexOf("@");
-  if (lastAtIndex === -1) return;
+  let separatorIndex = -1;
 
-  let refOrSha = decodedPath.slice(lastAtIndex + 1).replace(/\.tgz$/, "");
-  if (!refOrSha) return;
+  for (let i = 2; i < decodedPath.length - 1; i++) {
+    if (decodedPath[i] === "@" && decodedPath[i - 1] !== "/") {
+      separatorIndex = i;
+      break;
+    }
+  }
+
+  if (separatorIndex === -1) return;
+
+  let refOrSha = decodedPath.slice(separatorIndex + 1);
 
   const pathSegments = decodedPath
-    .slice(0, lastAtIndex)
+    .slice(0, separatorIndex)
     .split("/")
     .filter(Boolean);
   if (pathSegments.length === 0) return;