import { type Dispatcher } from 'undici';
import type { TrueConfRequest, InboundDispatchFn, Logger, TrueConfChannelConfig, InboundMessage, ResolvedChatKind } from './types';
import { WsClient } from './ws-client';
import { PerChatSendQueue } from './send-queue';
import type { OutboundQueue } from './outbound-queue';
export declare const MAX_FILE_SIZE_HARD_LIMIT_BYTES: number;
export declare function extractMentionedUserIds(text: string, parseMode: string | undefined): string[];
export declare function isReplyToBot(replyMessageId: string | undefined, recent: Set<string> | undefined): boolean;
export declare function stripHtmlTags(text: string): string;
export declare function rememberBotMessage(map: Map<string, Set<string>>, chatId: string, messageId: string): void;
export declare function resolveChatType(params: {
    wsClient: WsClient;
    chatId: string;
    cache: Map<string, ResolvedChatKind>;
    inflight: Map<string, Promise<ResolvedChatKind>>;
    logger: Logger;
}): Promise<ResolvedChatKind>;
export declare function __resetCoalesceBufferForTesting(): void;
export declare function normalizeForCompare(value: string | null | undefined): string;
export interface InboundContext {
    wsClient: WsClient;
    botIdentityCandidates: string[];
    accountId: string;
    dispatch: InboundDispatchFn;
    logger: Logger;
    directChats: Map<string, string>;
    chatTypes: Map<string, ResolvedChatKind>;
    inflightChatTypes: Map<string, Promise<ResolvedChatKind>>;
    recentBotMsgIds: Map<string, Set<string>>;
    isAlwaysRespond: (chatId: string) => boolean;
    matchesNickname: (text: string) => boolean;
}
export declare function handleInboundMessage(msg: TrueConfRequest, ctx: InboundContext): Promise<void>;
export declare function resolveAttachmentDir(logger?: Logger): string;
export declare function buildSanitizedTempPath(originalName: string): {
    tempPath: string;
    sanitizedOriginalName: string;
};
export declare function downloadFile(downloadUrl: string, destPath: string, maxBytes: number, logger: Logger, dispatcher?: Dispatcher): Promise<{
    ok: true;
} | {
    ok: false;
    error: string;
}>;
export declare function getMaxFileSize(cfg: TrueConfChannelConfig): number;
export interface InboundAttachmentReady {
    ok: true;
    tempPath: string;
    sanitizedName: string;
    mimeType: string;
    kindLabel: string;
    size: number;
}
export declare function prepareInboundAttachment(params: {
    inboundMsg: InboundMessage;
    wsClient: WsClient;
    accountId: string;
    store: {
        directChatsByStableUserId: Map<string, string>;
    };
    channelConfig: TrueConfChannelConfig;
    logger: Logger;
    sendQueue: PerChatSendQueue;
    outboundQueue: OutboundQueue;
    dispatcher?: Dispatcher;
}): Promise<InboundAttachmentReady | {
    ok: false;
}>;
export declare function unlinkTempFile(tempPath: string, logger: Logger): Promise<void>;
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