implemented homework

src/buttonclient.ts

@@ -0,0 +1,52 @@
+import { LiftRequest} from "./shared.ts";
+
+class ButtonClient{
+
+    private readonly host: string;
+
+    constructor(host: string) {
+        this.host = host;
+    }
+
+    private async sendPost(url: string, payload: unknown): Promise<Response>{
+        return  await fetch(url, {
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json",
+            },
+            body: JSON.stringify(payload),
+        });
+    }
+
+    async listLiftRequests(): Promise<LiftRequest[]> {
+        const resp = await fetch(`${this.host}/api/v1/lift-requests`);
+        const ret = await resp.json();
+        return ret as LiftRequest[] ;
+    }
+
+    async createLiftRequest(direction: string, level: number): Promise<boolean> {
+        const payload = {
+            direction: direction,
+            level: level,
+        }
+        const resp = await this.sendPost(`${this.host}/api/v1/lift-requests`, payload);
+        return 199 < resp.status && resp.status < 300;
+    }
+
+}
+
+async function experiment(): Promise<void>{
+    const client = new ButtonClient("http://localhost:3000");
+    console.log(await client.listLiftRequests());
+    console.log(await client.createLiftRequest("UP", -1))
+    console.log(await client.createLiftRequest("UP", -1))
+    console.log(await client.listLiftRequests());
+    console.log(await client.createLiftRequest("UP", 10))
+    console.log(await client.createLiftRequest("UP", 10))
+    console.log(await client.listLiftRequests());
+
+
+}
+
+
+await experiment()