import type { FileResourceRef } from "@opengeni/contracts";
import { completeFileUpload, prepareGeneratedWorkspaceFile, type Database } from "@opengeni/db";
import { type ObjectStorage } from "@opengeni/storage";
import type { DownloadedSlackReactionImage } from "./integrations/slack-bot.js";
export type SlackReactionImageImportSource = Readonly<{
    accountId: string;
    workspaceId: string;
    connectionId: string;
    slackTeamId: string;
    slackChannelId: string;
    slackMessageTs: string;
}>;
export type ImportedSlackReactionImage = Readonly<{
    resource: FileResourceRef;
    filename: string;
    contentType: "image/png" | "image/jpeg" | "image/webp";
    sizeBytes: number;
}>;
export declare function importSlackReactionImage(dependencies: Readonly<{
    db: Database;
    objectStorage: ObjectStorage;
    now?: () => Date;
    prepareFile?: typeof prepareGeneratedWorkspaceFile;
    completeFile?: typeof completeFileUpload;
}>, source: SlackReactionImageImportSource, image: DownloadedSlackReactionImage, ordinal: number): Promise<ImportedSlackReactionImage>;
export declare function slackReactionImageIdentity(source: SlackReactionImageImportSource, slackFileId: string): string;
export declare function safeSlackImageFilename(value: string, contentType: "image/png" | "image/jpeg" | "image/webp"): string;