Instrument session with analytics events (#9)

* rename to analytics and limit scope

* instrument session events

* change default analytics poll interval

* opt out analytics in a loop

Author: lherman-cs

peer/generate.bash

@@ -3,4 +3,4 @@ set -e
 
 protoc --ts_out=src --experimental_allow_proto3_optional --ts_opt=client_generic --proto_path proto/v1 ./proto/v1/signaling.proto
 node ./scripts/patch.cjs
-sed -i '1s;^;// @ts-nocheck\n;' ./src/google/protobuf/timestamp.ts
+# sed -i '1s;^;// @ts-nocheck\n;' ./src/google/protobuf/timestamp.ts

peer/proto

@@ -1,3 +1,5 @@
+import { AnalyticsMetrics, AnalyticsTags, EventType } from "./signaling.ts";
+
 interface RTCStats {
   id: string;
   timestamp: number;
@@ -50,24 +52,24 @@ interface RTCRemoteInboundRtpStreamStats extends RTCStats {
 interface RTCIceCandidatePairStats extends RTCStats {
   type: "candidate-pair";
   state?:
-    | "failed"
-    | "frozen"
-    | "in-progress"
-    | "succeeded"
-    | "waiting";
+  | "failed"
+  | "frozen"
+  | "in-progress"
+  | "succeeded"
+  | "waiting";
   currentRoundTripTime?: number;
 }
 
 interface RTCPeerConnectionStats extends RTCStats {
   type: "peer-connection";
   iceConnectionState?:
-    | "new"
-    | "checking"
-    | "connected"
-    | "completed"
-    | "failed"
-    | "disconnected"
-    | "closed";
+  | "new"
+  | "checking"
+  | "connected"
+  | "completed"
+  | "failed"
+  | "disconnected"
+  | "closed";
   iceGatheringState?: "new" | "gathering" | "complete";
 }
 
@@ -175,3 +177,7 @@ export function calculateQualityScore(
 
   return quality;
 }
+
+export function now(): bigint {
+  return BigInt(Date.now() * 1000);
+}