feat: lab05 done

- add Users/Create User feature
- add Pages Functions
- add d1 database

functions/api/users.js

@@ -0,0 +1,47 @@
+/**
+ * @typedef {import('@cloudflare/workers-types').D1Database} D1Database
+ */
+
+export async function onRequestGet(context) {
+  const DB = context.env.DB;
+
+  // return all users
+  const stmt = await DB.prepare("SELECT * FROM users");
+  const users = (await stmt.run()).results;
+
+  return new Response(JSON.stringify(users), {
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+export async function onRequestPost(context) {
+  /**
+   * @type {D1Database}
+   */
+  const DB = context.env.DB;
+  const { name } = await context.request.json();
+
+  // create a new user
+  const stmt = DB.prepare("INSERT INTO users (name) VALUES (?)").bind(name);
+
+  try {
+    const result = await stmt.run();
+
+    if (!result.success) {
+      throw new Error("Failed to create user");
+    }
+
+    const userId = result.meta.last_row_id;
+    const stmt2 = await DB.prepare("SELECT * FROM users WHERE id = ?").bind(userId);
+    const userResult = await stmt2.run();
+    const user = userResult.results[0];
+
+    return new Response(JSON.stringify(user), {
+      headers: { "Content-Type": "application/json" },
+      status: 201,
+    });
+  } catch (error) {
+    console.error("Error creating user:", error);
+    return new Response("Error creating user", { status: 500 });
+  }
+}