Query purchase fulfillment with identifier

src/api/client.ts

@@ -42,8 +42,8 @@ export const startBuyFlow = (quantity: number) =>
     AxiosResponse<{ url: string }, unknown, {}>
   >;
 
-export const completeBuyFlow = () =>
+export const completeBuyFlow = (purchaseId: string) =>
-  axios.post("/buy/complete", {}, getJwtHeader()) as Promise<
+  axios.post("/buy/complete", { purchaseId }, getJwtHeader()) as Promise<
     AxiosResponse<{ url: string }, unknown, {}>
   >;
 

src/pages/buy/Buy.tsx

@@ -47,7 +47,7 @@ export const Buy = () => {
           <FormControlLabel
             value="10"
             control={<Radio />}
-            label="10 tokens - 40"
+            label="10 tokens - 40€"
           />
         </RadioGroup>
       </Paper>

src/pages/buy/BuyReturn.tsx

@@ -2,7 +2,10 @@ import { completeBuyFlow } from "../../api/client";
 import { CircularProgress, Grid, Typography } from "@mui/material";
 
 export const BuyReturn = () => {
-  completeBuyFlow().then(
+  const purchaseId = new URL(window.location.href).searchParams.get(
+    "purchaseId",
+  )!;
+  completeBuyFlow(purchaseId).then(
     (response) => (window.location.href = response.data.url),
   );