feat: add zip downloading

public/results.js

@@ -13,6 +13,33 @@ window.downloadAll = function () {
     }, index * 100);
   });
 };
+
+window.downloadZip = function () {
+  const jobId = window.location.pathname.split("/").pop();
+  const userId = document.querySelector("meta[name='user-id']").content;
+
+  fetch(`${webroot}/zip/${userId}/${jobId}`, {
+    method: "GET",
+  })
+    .then((res) => {
+      if (res.ok) {
+        return res.blob();
+      }
+
+      return Promise.reject(new Error("Failed to download zip"));
+    })
+    .then((blob) => {
+      const url = window.URL.createObjectURL(blob);
+      const a = document.createElement("a");
+      a.href = url;
+      a.download = `convertx-${userId}-${jobId}.zip`;
+      document.body.appendChild(a);
+      a.click();
+      a.remove();
+    })
+    .catch((err) => console.log(err));
+};
+
 const jobId = window.location.pathname.split("/").pop();
 const main = document.querySelector("main");
 let progressElem = document.querySelector("progress");