added mongodb

app/api/collisions/route.ts

@@ -0,0 +1,18 @@
+export const runtime = "nodejs";
+import { NextResponse } from "next/server";
+import { getCollisionsCollection } from "@/lib/mongodb";
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url);
+  const limitParam = searchParams.get("limit");
+  const limit = Math.max(
+    1,
+    Math.min(Number.parseInt(limitParam ?? "100", 10) || 100, 1000)
+  );
+  const collection = await getCollisionsCollection("collisions_2025");
+  const data = await collection.find({}).limit(limit).toArray();
+
+  return NextResponse.json({ data });
+}
+
+

lib/mongodb.ts

@@ -0,0 +1,72 @@
+import { MongoClient } from "mongodb";
+import type { CollisionRecord } from "@/types/collision";
+
+function normalizeMongoUri(raw: string | undefined) {
+  console.log("raw", raw);
+  if (!raw) return "";
+  let value = raw.trim();
+  // Strip surrounding quotes if present
+  if (
+    (value.startsWith('"') && value.endsWith('"')) ||
+    (value.startsWith("'") && value.endsWith("'"))
+  ) {
+    value = value.slice(1, -1);
+  }
+  // Remove accidental trailing semicolon
+  if (value.endsWith(";")) {
+    value = value.slice(0, -1);
+  }
+  // If there is stray punctuation right after the scheme (e.g., "mongodb+srv://;user")
+  // normalize it by removing non-alphanumeric chars immediately following "://"
+  value = value.replace(
+    /^(mongodb(?:\+srv)?:\/\/)\s*[^A-Za-z0-9]+/,
+    (_m, scheme) => `${scheme}`
+  );
+  return value;
+}
+
+const uri = process.env.MONGODB_URI;
+console.log("uri", uri);
+if (!uri) {
+  throw new Error("❌ MONGODB_URI is not defined");
+}
+console.log("uri.startsWith('mongodb://')", uri.startsWith("mongodb://"));
+console.log("uri.startsWith('mongodb+srv://')", uri.startsWith("mongodb+srv://"));
+if (!(uri.startsWith("mongodb://") || uri.startsWith("mongodb+srv://"))) {
+  throw new Error(
+    `❌ Invalid MONGODB_URI. It must start with "mongodb://" or "mongodb+srv://". Received prefix: ${uri.slice(
+      0,
+      20
+    )}...`
+  );
+}
+
+declare global {
+  // prevents multiple connections in dev (hot reload)
+  var _mongoClientPromise: Promise<MongoClient> | undefined;
+}
+
+let clientPromise: Promise<MongoClient>;
+
+if (process.env.NODE_ENV === "development") {
+  if (!global._mongoClientPromise) {
+    const client = new MongoClient(uri);
+    global._mongoClientPromise = client.connect();
+  }
+  clientPromise = global._mongoClientPromise;
+} else {
+  const client = new MongoClient(uri);
+  clientPromise = client.connect();
+}
+
+export async function getDb() {
+  const client = await clientPromise;
+  const dbName = process.env.MONGODB_DB;
+  return client.db(dbName);
+}
+
+export async function getCollisionsCollection(collectionName = "collisions_2025") {
+
+  const db = await getDb();
+  return db.collection<CollisionRecord>(collectionName);
+}