json parsing

backend-assemblyscript/step-2-json-encoding/assembly/main.ts

@@ -0,0 +1,24 @@
+import {Action, decode, PostRequest} from "./request";
+import {PostResponse, FetchResponse, UnknownResponse} from "./response";
+
+let messages = new Array<string>();
+messages.push("hello");
+messages.push("hi!");
+
+// main handler for an application
+export function handler(input: string): string {
+
+  let request = decode(input);
+
+  if (request.action == Action.Post) {
+    let post = request as PostRequest;
+    let response = new PostResponse(0);
+    return response.serialize()
+  } else if (request.action == Action.Fetch) {
+    let response = new FetchResponse(messages);
+    return response.serialize()
+  }
+
+  let response = new UnknownResponse();
+  return response.serialize();
+}