refactor(telegram): split bot handlers

src/telegram/bot-updates.ts

@@ -0,0 +1,54 @@
+import { createDedupeCache } from "../infra/dedupe.js";
+import type { TelegramContext, TelegramMessage } from "./bot/types.js";
+
+const MEDIA_GROUP_TIMEOUT_MS = 500;
+const RECENT_TELEGRAM_UPDATE_TTL_MS = 5 * 60_000;
+const RECENT_TELEGRAM_UPDATE_MAX = 2000;
+
+export type MediaGroupEntry = {
+  messages: Array<{
+    msg: TelegramMessage;
+    ctx: TelegramContext;
+  }>;
+  timer: ReturnType<typeof setTimeout>;
+};
+
+export type TelegramUpdateKeyContext = {
+  update?: {
+    update_id?: number;
+    message?: TelegramMessage;
+    edited_message?: TelegramMessage;
+  };
+  update_id?: number;
+  message?: TelegramMessage;
+  callbackQuery?: { id?: string; message?: TelegramMessage };
+};
+
+export const resolveTelegramUpdateId = (ctx: TelegramUpdateKeyContext) =>
+  ctx.update?.update_id ?? ctx.update_id;
+
+export const buildTelegramUpdateKey = (ctx: TelegramUpdateKeyContext) => {
+  const updateId = resolveTelegramUpdateId(ctx);
+  if (typeof updateId === "number") return `update:${updateId}`;
+  const callbackId = ctx.callbackQuery?.id;
+  if (callbackId) return `callback:${callbackId}`;
+  const msg =
+    ctx.message ??
+    ctx.update?.message ??
+    ctx.update?.edited_message ??
+    ctx.callbackQuery?.message;
+  const chatId = msg?.chat?.id;
+  const messageId = msg?.message_id;
+  if (typeof chatId !== "undefined" && typeof messageId === "number") {
+    return `message:${chatId}:${messageId}`;
+  }
+  return undefined;
+};
+
+export const createTelegramUpdateDedupe = () =>
+  createDedupeCache({
+    ttlMs: RECENT_TELEGRAM_UPDATE_TTL_MS,
+    maxSize: RECENT_TELEGRAM_UPDATE_MAX,
+  });
+
+export { MEDIA_GROUP_TIMEOUT_MS };