Autofill on ZIP for Customer Quick Entry

ns_app/public/js/custom.js

@@ -31,14 +31,43 @@ frappe.ui.form.on("Customer", {
 
         console.log("NS App: Modifying Quick Entry Fields");
 
-        // Remove unwanted fields
+        // Hide unwanted fields
         frm.toggle_display("customer_group", false);
 
         // Make fields required
         frm.set_df_property("mobile_no", "reqd", 1);
 
-        // Set default values
+        // Defaults
         frm.set_value("territory", "United States");
+    },
+
+    pincode(frm) {
+        if (!frm.is_quick_entry) return;
+
+        const zip = frm.doc.pincode;
+        if (!zip || zip.length < 5) return;
+
+        // Optional: only run for US
+        if (frm.doc.country && frm.doc.country !== "United States") return;
+
+        fetch(`https://api.zippopotam.us/us/${zip}`)
+            .then(res => {
+                if (!res.ok) return null;
+                return res.json();
+            })
+            .then(data => {
+                if (!data || !data.places || !data.places.length) return;
+
+                const place = data.places[0];
+
+                frm.set_value("city", place["place name"]);
+                frm.set_value("state", place["state"]);
+                frm.set_value("country", data.country);
+
+                console.log("NS App: ZIP auto-filled address", data);
+            })
+            .catch(() => {
+                console.log("Invaild Zip!")
+            });
     }
 });
-