import type { ArkmeFileSendTask, ArkmeLocalFile } from '../file-transfer-contract.js';
import type { ArkmeContentBlock, ArkmeTimelineItem } from '../types.js';
export declare function localFileBlock(file: ArkmeLocalFile, sortOrder?: number): ArkmeContentBlock;
export declare function fileTaskHasOnlyBackgroundFiles(task: ArkmeFileSendTask): boolean;
/** Active supplemental capture has no visible per-message status. */
export declare function fileTaskShowsInlineStatus(task: ArkmeFileSendTask): boolean;
export declare function fileTaskTimelineItem(task: ArkmeFileSendTask): ArkmeTimelineItem;
export declare function fileTaskConversationPreview(task: ArkmeFileSendTask): string;
export declare function bindSentFileTaskLocals(item: ArkmeTimelineItem, tasks: readonly ArkmeFileSendTask[]): ArkmeTimelineItem;
export declare function arkmeFileSendTasksNeedPolling(tasks: readonly ArkmeFileSendTask[]): boolean;
export declare function arkmeFileSendTasksEqual(left: readonly ArkmeFileSendTask[], right: readonly ArkmeFileSendTask[]): boolean;
export declare function useArkmeDeliveryTasks<T>(sourceRef: string | undefined, userId: string | number | undefined, adapter: {
    read(scope: string, signal: AbortSignal): Promise<T[]>;
    active(tasks: readonly T[]): boolean;
    belongs(task: T, scope: string): boolean;
    key(task: T): string;
}, enabled?: boolean): {
    tasks: readonly T[];
    activeTaskKeys: ReadonlySet<string>;
    refresh: () => void;
    accept: (task: T) => void;
};
export declare function useArkmeFileSendTasks(sourceRef: string | undefined, userId: number | undefined, enabled?: boolean): {
    tasks: readonly ArkmeFileSendTask[];
    activeTaskKeys: ReadonlySet<string>;
    refresh: () => void;
    accept: (task: ArkmeFileSendTask) => void;
};
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