refactor: merge both shard systems

src/ws/resume.ts

@@ -0,0 +1,54 @@
+import { DiscordGatewayOpcodes } from "../types/codes/gateway_opcodes.ts";
+import { ws } from "./ws.ts";
+
+export async function resume(shardID: number) {
+  ws.log("RESUMING", { shardID });
+
+  // CREATE A SHARD
+  const socket = await ws.createShard(shardID);
+
+  // NOW WE HANDLE RESUMING THIS SHARD
+  // Get the old data for this shard necessary for resuming
+  const oldShard = ws.shards.get(shardID);
+
+  if (oldShard) {
+    // HOW TO CLOSE OLD SHARD SOCKET!!!
+    oldShard.ws.close(4009, "Resuming the shard, closing old shard.");
+    // STOP OLD HEARTBEAT
+    clearInterval(oldShard.heartbeat.intervalID);
+  }
+
+  const sessionID = oldShard?.sessionID || "";
+  const previousSequenceNumber = oldShard?.previousSequenceNumber || 0;
+
+  ws.shards.set(shardID, {
+    id: shardID,
+    ws: socket,
+    resumeInterval: 0,
+    sessionID,
+    previousSequenceNumber,
+    resuming: false,
+    heartbeat: {
+      lastSentAt: 0,
+      lastReceivedAt: 0,
+      acknowledged: false,
+      keepAlive: false,
+      interval: 0,
+      intervalID: 0,
+    },
+  });
+
+  // Resume on open
+  socket.onopen = () => {
+    socket.send(
+      JSON.stringify({
+        op: DiscordGatewayOpcodes.Resume,
+        d: {
+          token: ws.identifyPayload.token,
+          session_id: sessionID,
+          seq: previousSequenceNumber,
+        },
+      })
+    );
+  };
+}