feat: added get positions endpoint

apps/marginfi-v2-trading/src/pages/api/pool/positions.ts

@@ -0,0 +1,41 @@
+import { NextApiRequest, NextApiResponse } from "next";
+import { PoolApiResponse } from "~/types/api.types";
+
+// Cache times in seconds
+const S_MAXAGE_TIME = 60 * 4; // 4 minutes
+const STALE_WHILE_REVALIDATE_TIME = 60 * 10; // 10 minutes
+
+export default async function handler(req: NextApiRequest, res: NextApiResponse) {
+  if (!process.env.MARGINFI_API_URL) {
+    return res.status(500).json({ error: "API URL is not set" });
+  }
+
+  const { address } = req.query;
+
+  console.log({ address });
+
+  try {
+    const response = await fetch(`${process.env.MARGINFI_API_URL}/arena/positions/${address}`, {
+      headers: {
+        Accept: "application/json",
+      },
+    });
+
+    if (!response.ok) {
+      throw new Error(`API responded with status: ${response.status}`);
+    }
+
+    const data = await response.json();
+
+    // Set cache headers
+    res.setHeader("Cache-Control", `s-maxage=${S_MAXAGE_TIME}, stale-while-revalidate=${STALE_WHILE_REVALIDATE_TIME}`);
+
+    return res.status(200).json(data);
+  } catch (error) {
+    console.error("Error fetching pool data:", error);
+    return res.status(500).json({
+      error: "Internal server error",
+      message: process.env.NODE_ENV === "development" ? error : undefined,
+    });
+  }
+}