Example for http oak middleware with crud and sqlite DB

examples/http-server-oak-crud-middleware-with-sqlite3-db.ts

@@ -0,0 +1,49 @@
+/**
+ * @title HTTP server: Performing CRUD operations using SQLite3
+ * @difficulty intermediate
+ * @tags web, cli, deploy
+ * @run -A <url>
+ * @group Network
+ *
+ * An example of a HTTP server for CRUD routes with oak middleware framework and SQLite3 database.It demonstrates the CRUD(Create, Read, Update and Delete) operations on file-based SQLite Database using HTTP methods (Get, Post, Put, Delete, Options)
+ */
+import { Application, Router } from "jsr:@oak/oak";
+import { Database } from "jsr:@db/sqlite";
+// Open a database from file, creates if doesn't exist. here the 'people.db' is a file-based database
+const peopleDb = new Database("people.db");
+peopleDb.exec(
+  "CREATE TABLE IF NOT EXISTS people (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT not null,age INTEGER not null)",
+);
+const app = new Application();
+const router = new Router();
+router.post("/people", async (ctx) => {
+  const { name, age } = await ctx.request.body.json();
+  await peopleDb.prepare("INSERT INTO people (name, age) VALUES (?,?)").run(
+    name,
+    age,
+  );
+  const lastInsertRowId = await peopleDb.lastInsertRowId; // Get the last inserted row ID
+  ctx.response.status = 201;
+  ctx.response.body = { id: lastInsertRowId, name, age };
+});
+router.get("/people", async (ctx) => {
+  const users = await peopleDb.prepare("SELECT * FROM people").all();
+  ctx.response.body = users;
+});
+router.put("/people/:id", async (ctx) => {
+  const { name, age } = await ctx.request.body.json();
+  await peopleDb.prepare("UPDATE people SET name =?, age=? WHERE id = ?").run(
+    name,
+    age,
+    ctx.params.id,
+  );
+  ctx.response.body = { message: "person updated successfully as requested" };
+});
+router.delete("/people/:id", async (ctx) => {
+  await peopleDb.prepare("DELETE FROM people WHERE id = ?").run(ctx.params.id);
+  ctx.response.body = "person removed successfully as requested";
+});
+app.use(router.routes());
+app.use(router.allowedMethods());
+await app.listen({ port: "8369" }); // Any available port number can be defined here
+export default app; // Export the app instance for testing