create database connection

src/app/api/studies/route.ts

@@ -0,0 +1,31 @@
+import { db } from "~/server/db";
+import { studies } from "~/server/db/schema";
+import { NextResponse } from "next/server";
+import { eq } from "drizzle-orm";
+
+export async function GET() {
+  const allStudies = await db.select().from(studies);
+  return NextResponse.json(allStudies);
+}
+
+export async function POST(request: Request) {
+  const { title, description } = await request.json();
+  const newStudy = await db.insert(studies).values({ title, description }).returning();
+  return NextResponse.json(newStudy[0]);
+}
+
+export async function PUT(request: Request) {
+  const { id, title, description } = await request.json();
+  const updatedStudy = await db
+    .update(studies)
+    .set({ title, description })
+    .where(eq(studies.id, id))
+    .returning();
+  return NextResponse.json(updatedStudy[0]);
+}
+
+export async function DELETE(request: Request) {
+  const { id } = await request.json();
+  await db.delete(studies).where(eq(studies.id, id));
+  return NextResponse.json({ message: "Study deleted" });
+}