289 lines
9.3 KiB
TypeScript
289 lines
9.3 KiB
TypeScript
import type { ReactionType, ReactionTypeEmoji } from "@grammyjs/types";
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import { Bot, InputFile } from "grammy";
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import { loadConfig } from "../config/config.js";
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import { formatErrorMessage } from "../infra/errors.js";
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import type { RetryConfig } from "../infra/retry.js";
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import { createTelegramRetryRunner } from "../infra/retry-policy.js";
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import { mediaKindFromMime } from "../media/constants.js";
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import { isGifMedia } from "../media/mime.js";
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import { loadWebMedia } from "../web/media.js";
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import { resolveTelegramAccount } from "./accounts.js";
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type TelegramSendOpts = {
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token?: string;
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accountId?: string;
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verbose?: boolean;
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mediaUrl?: string;
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maxBytes?: number;
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api?: Bot["api"];
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retry?: RetryConfig;
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/** Message ID to reply to (for threading) */
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replyToMessageId?: number;
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/** Forum topic thread ID (for forum supergroups) */
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messageThreadId?: number;
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};
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type TelegramSendResult = {
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messageId: string;
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chatId: string;
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};
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type TelegramReactionOpts = {
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token?: string;
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accountId?: string;
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api?: Bot["api"];
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remove?: boolean;
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verbose?: boolean;
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retry?: RetryConfig;
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};
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const PARSE_ERR_RE =
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/can't parse entities|parse entities|find end of the entity/i;
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function resolveToken(
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explicit: string | undefined,
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params: { accountId: string; token: string },
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) {
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if (explicit?.trim()) return explicit.trim();
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if (!params.token) {
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throw new Error(
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`Telegram bot token missing for account "${params.accountId}" (set telegram.accounts.${params.accountId}.botToken/tokenFile or TELEGRAM_BOT_TOKEN for default).`,
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);
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}
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return params.token.trim();
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}
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function normalizeChatId(to: string): string {
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const trimmed = to.trim();
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if (!trimmed) throw new Error("Recipient is required for Telegram sends");
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// Common internal prefixes that sometimes leak into outbound sends.
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// - ctx.To uses `telegram:<id>`
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// - group sessions often use `telegram:group:<id>`
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let normalized = trimmed.replace(/^(telegram|tg|group):/i, "").trim();
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// Accept t.me links for public chats/channels.
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// (Invite links like `t.me/+...` are not resolvable via Bot API.)
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const m =
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/^https?:\/\/t\.me\/([A-Za-z0-9_]+)$/i.exec(normalized) ??
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/^t\.me\/([A-Za-z0-9_]+)$/i.exec(normalized);
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if (m?.[1]) normalized = `@${m[1]}`;
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if (!normalized) throw new Error("Recipient is required for Telegram sends");
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if (normalized.startsWith("@")) return normalized;
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if (/^-?\d+$/.test(normalized)) return normalized;
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// If the user passed a username without `@`, assume they meant a public chat/channel.
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if (/^[A-Za-z0-9_]{5,}$/i.test(normalized)) return `@${normalized}`;
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return normalized;
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}
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function normalizeMessageId(raw: string | number): number {
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if (typeof raw === "number" && Number.isFinite(raw)) {
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return Math.trunc(raw);
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}
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if (typeof raw === "string") {
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const value = raw.trim();
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if (!value) {
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throw new Error("Message id is required for Telegram reactions");
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}
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const parsed = Number.parseInt(value, 10);
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if (Number.isFinite(parsed)) return parsed;
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}
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throw new Error("Message id is required for Telegram reactions");
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}
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export async function sendMessageTelegram(
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to: string,
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text: string,
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opts: TelegramSendOpts = {},
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): Promise<TelegramSendResult> {
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const cfg = loadConfig();
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const account = resolveTelegramAccount({
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cfg,
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accountId: opts.accountId,
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});
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const token = resolveToken(opts.token, account);
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const chatId = normalizeChatId(to);
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// Use provided api or create a new Bot instance. The nullish coalescing
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// operator ensures api is always defined (Bot.api is always non-null).
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const api = opts.api ?? new Bot(token).api;
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const mediaUrl = opts.mediaUrl?.trim();
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// Build optional params for forum topics and reply threading.
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// Only include these if actually provided to keep API calls clean.
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const threadParams: Record<string, number> = {};
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if (opts.messageThreadId != null) {
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threadParams.message_thread_id = Math.trunc(opts.messageThreadId);
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}
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if (opts.replyToMessageId != null) {
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threadParams.reply_to_message_id = Math.trunc(opts.replyToMessageId);
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}
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const hasThreadParams = Object.keys(threadParams).length > 0;
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const request = createTelegramRetryRunner({
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retry: opts.retry,
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configRetry: account.config.retry,
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verbose: opts.verbose,
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});
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const wrapChatNotFound = (err: unknown) => {
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if (!/400: Bad Request: chat not found/i.test(formatErrorMessage(err)))
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return err;
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return new Error(
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[
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`Telegram send failed: chat not found (chat_id=${chatId}).`,
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"Likely: bot not started in DM, bot removed from group/channel, group migrated (new -100… id), or wrong bot token.",
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`Input was: ${JSON.stringify(to)}.`,
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].join(" "),
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);
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};
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if (mediaUrl) {
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const media = await loadWebMedia(mediaUrl, opts.maxBytes);
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const kind = mediaKindFromMime(media.contentType ?? undefined);
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const isGif = isGifMedia({
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contentType: media.contentType,
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fileName: media.fileName,
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});
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const fileName =
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media.fileName ??
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(isGif ? "animation.gif" : inferFilename(kind)) ??
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"file";
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const file = new InputFile(media.buffer, fileName);
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const caption = text?.trim() || undefined;
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const mediaParams = hasThreadParams
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? { caption, ...threadParams }
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: { caption };
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let result:
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| Awaited<ReturnType<typeof api.sendPhoto>>
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| Awaited<ReturnType<typeof api.sendVideo>>
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| Awaited<ReturnType<typeof api.sendAudio>>
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| Awaited<ReturnType<typeof api.sendAnimation>>
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| Awaited<ReturnType<typeof api.sendDocument>>;
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if (isGif) {
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result = await request(
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() => api.sendAnimation(chatId, file, mediaParams),
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"animation",
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).catch((err) => {
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throw wrapChatNotFound(err);
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});
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} else if (kind === "image") {
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result = await request(
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() => api.sendPhoto(chatId, file, mediaParams),
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"photo",
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).catch((err) => {
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throw wrapChatNotFound(err);
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});
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} else if (kind === "video") {
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result = await request(
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() => api.sendVideo(chatId, file, mediaParams),
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"video",
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).catch((err) => {
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throw wrapChatNotFound(err);
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});
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} else if (kind === "audio") {
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result = await request(
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() => api.sendAudio(chatId, file, mediaParams),
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"audio",
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).catch((err) => {
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throw wrapChatNotFound(err);
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});
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} else {
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result = await request(
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() => api.sendDocument(chatId, file, mediaParams),
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"document",
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).catch((err) => {
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throw wrapChatNotFound(err);
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});
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}
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const messageId = String(result?.message_id ?? "unknown");
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return { messageId, chatId: String(result?.chat?.id ?? chatId) };
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}
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if (!text || !text.trim()) {
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throw new Error("Message must be non-empty for Telegram sends");
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}
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const textParams = hasThreadParams
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? { parse_mode: "Markdown" as const, ...threadParams }
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: { parse_mode: "Markdown" as const };
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const res = await request(
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() => api.sendMessage(chatId, text, textParams),
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"message",
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).catch(async (err) => {
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// Telegram rejects malformed Markdown (e.g., unbalanced '_' or '*').
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// When that happens, fall back to plain text so the message still delivers.
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const errText = formatErrorMessage(err);
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if (PARSE_ERR_RE.test(errText)) {
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if (opts.verbose) {
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console.warn(
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`telegram markdown parse failed, retrying as plain text: ${errText}`,
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);
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}
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return await request(
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() =>
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hasThreadParams
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? api.sendMessage(chatId, text, threadParams)
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: api.sendMessage(chatId, text),
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"message-plain",
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).catch((err2) => {
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throw wrapChatNotFound(err2);
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});
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}
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throw wrapChatNotFound(err);
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});
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const messageId = String(res?.message_id ?? "unknown");
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return { messageId, chatId: String(res?.chat?.id ?? chatId) };
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}
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export async function reactMessageTelegram(
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chatIdInput: string | number,
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messageIdInput: string | number,
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emoji: string,
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opts: TelegramReactionOpts = {},
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): Promise<{ ok: true }> {
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const cfg = loadConfig();
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const account = resolveTelegramAccount({
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cfg,
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accountId: opts.accountId,
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});
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const token = resolveToken(opts.token, account);
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const chatId = normalizeChatId(String(chatIdInput));
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const messageId = normalizeMessageId(messageIdInput);
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const api = opts.api ?? new Bot(token).api;
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const request = createTelegramRetryRunner({
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retry: opts.retry,
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configRetry: account.config.retry,
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verbose: opts.verbose,
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});
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const remove = opts.remove === true;
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const trimmedEmoji = emoji.trim();
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// Build the reaction array. We cast emoji to the grammY union type since
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// Telegram validates emoji server-side; invalid emojis fail gracefully.
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const reactions: ReactionType[] =
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remove || !trimmedEmoji
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? []
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: [{ type: "emoji", emoji: trimmedEmoji as ReactionTypeEmoji["emoji"] }];
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if (typeof api.setMessageReaction !== "function") {
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throw new Error("Telegram reactions are unavailable in this bot API.");
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}
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await request(
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() => api.setMessageReaction(chatId, messageId, reactions),
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"reaction",
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);
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return { ok: true };
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}
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function inferFilename(kind: ReturnType<typeof mediaKindFromMime>) {
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switch (kind) {
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case "image":
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return "image.jpg";
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case "video":
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return "video.mp4";
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case "audio":
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return "audio.ogg";
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default:
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return "file.bin";
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}
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}
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