Fix up code more

Author: Edward Banner

functions/zoom-meeting-webhook-handler/index.js

@@ -96,6 +96,18 @@ function isSlashCommand(event) {
 }
 
 
+function getSlashCommand(event) {
+  const body = parseBody(event);
+  return typeof body?.command === "string" && body.command;
+}
+
+
+function getSlashText(event) {
+  const body = parseBody(event);
+  return typeof body?.text === "string" && body.text;
+}
+
+
 async function getActiveParticipants() {
   const resp = await slack.conversations.history({ channel: SLACK_COWORKING_CHANNEL_ID, limit: 1 });
   return resp?.messages?.[0]?.blocks?.[0]?.call?.v1?.active_participants ?? [];
@@ -110,17 +122,27 @@ async function endCall() {
 
 exports.handler = async function(event) {
   if (isSlashCommand(event)) {
-    // FIXME: Check for /co-working-room end
-    const call_id = await handleStartCall();
-    return { statusCode: 200, body: JSON.stringify(call_id) }
+    const slashCommand = getSlashCommand(event);
+    if (slashCommand === "/co-working-room") {
+      const slashText = getSlashText(event);
+      if (slashText == "end") {
+        await endCall();
+      }
+      const call_id = await handleStartCall();
+      return { statusCode: 200, body: JSON.stringify(call_id) }
+    }
   }
 
   // Zoom webhooks
   const zoomEvent = parseBody(event);
   const zoomEventName = zoomEvent?.event;
 
   if (zoomEventName === "endpoint.url_validation") {
-    return json(200, handleValidation(zoomEvent)); // FIXME: Define `json`
+    return {
+      statusCode: 200,
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(handleValidation(zoomEvent))
+    }
   }
 
   else if (zoomEventName === "meeting.participant_joined") {
@@ -132,7 +154,7 @@ exports.handler = async function(event) {
     await removeParticipantFromCall(zoomEvent);
     const active = await getActiveParticipants();
     if (active.length === 0) {
-      endCall();
+      await endCall();
     }
     return { statusCode: 204 };
   }