import type { OpenClawConfig as ClawdbotConfig } from "openclaw/plugin-sdk/config-contracts";
import type { RuntimeEnv } from "openclaw/plugin-sdk/runtime";
import type { MeetMediaInfo } from "./types.js";
/**
 * 根据文件扩展名推断 MIME 类型
 * 支持常见图片格式，包括现代格式如 avif, webp, heic
 */
export declare function inferContentTypeFromFileName(fileName: string): string | undefined;
/**
 * 获取最终的 contentType
 * 如果原始 contentType 缺失或为通用二进制流，则根据文件名推断
 */
export declare function resolveContentType(fileName: string, originalContentType?: string): string;
export declare function extractAtIds(text: string): {
    text: string;
    atIds: number[];
};
export declare function mergeAtIds(explicitAtIds?: number[], extractedAtIds?: number[]): number[];
export declare function resolveMeetThreadTarget<T extends {
    sessionType: number;
}>(sessionInfo: T, threadId?: string): T | (T & {
    threadId?: number;
});
export type SendMessageMeetOpts = {
    cfg: ClawdbotConfig;
    to: string;
    text: string;
    accountId?: string;
    threadId?: string;
    source?: string;
    replyToMessageId?: string;
    atIds?: number[];
    /** Optional runtime for consistent logging. If not provided, debug logs stay silent. */
    runtime?: {
        log?: RuntimeEnv["log"];
        error?: RuntimeEnv["error"];
    };
};
export declare function sendMessageMeet(opts: SendMessageMeetOpts): Promise<{
    messageId: string;
    chatId: string;
}>;
export type SendMediaMeetOpts = {
    cfg: ClawdbotConfig;
    to: string;
    threadId?: string;
    source?: string;
    text?: string;
    mediaUrl: string;
    mediaLocalRoots?: readonly string[];
    accountId?: string;
    /** 上传进度回调 */
    onProgress?: (progress: {
        percent: string;
        loaded: number;
        total: number;
        speedPerSecond: string;
    }) => void;
    /** Optional runtime for consistent logging. If not provided, debug logs stay silent. */
    runtime?: {
        log?: RuntimeEnv["log"];
        error?: RuntimeEnv["error"];
    };
};
export declare function sendMediaMeet(opts: SendMediaMeetOpts): Promise<{
    messageId: string;
    chatId: string;
}>;
export declare function resolveMeetMedia(mediaUrl: string, opts?: {
    cfg?: ClawdbotConfig;
    accountId?: string;
    mediaLocalRoots?: readonly string[];
}): Promise<MeetMediaInfo>;
export declare function getMessageMeet(opts: {
    cfg: ClawdbotConfig;
    messageId: string;
    accountId?: string;
}): Promise<{
    content: string;
} | null>;