chore: Initial commit of Opencord base state

2026-02-18 02:49:21 +01:00
commit 4fd17084a5
124 changed files with 17955 additions and 0 deletions
@@ -0,0 +1,50 @@
+/**
+ * Discord-style Snowflake ID Generator
+ *
+ * Structure (64-bit):
+ * - 42 bits: milliseconds since custom epoch (Jan 1, 2024)
+ * - 10 bits: worker/process ID
+ * - 12 bits: sequence number (per-millisecond)
+ *
+ * This gives us:
+ * - ~139 years of IDs from epoch
+ * - 1024 workers
+ * - 4096 IDs per millisecond per worker
+ */
+
+const EPOCH = 1704067200000n; // Jan 1, 2024 00:00:00 UTC
+const WORKER_ID = BigInt(process.pid % 1024);
+
+let sequence = 0n;
+let lastTimestamp = -1n;
+
+export function generateSnowflake(): string {
+  let timestamp = BigInt(Date.now());
+
+  if (timestamp === lastTimestamp) {
+    sequence = (sequence + 1n) & 0xFFFn; // 12-bit mask
+    if (sequence === 0n) {
+      // Sequence exhausted, wait for next millisecond
+      while (timestamp <= lastTimestamp) {
+        timestamp = BigInt(Date.now());
+      }
+    }
+  } else {
+    sequence = 0n;
+  }
+
+  lastTimestamp = timestamp;
+
+  const id =
+    ((timestamp - EPOCH) << 22n) |
+    (WORKER_ID << 12n) |
+    sequence;
+
+  return id.toString();
+}
+
+export function snowflakeToTimestamp(snowflake: string): number {
+  const id = BigInt(snowflake);
+  const timestamp = (id >> 22n) + EPOCH;
+  return Number(timestamp);
+}