import type { BatchItem, ComposeRequest, GenerationStatus, StudioRatio, StudioStyle } from "../api/generation";
/** The refType every composed asset carries. Mirrors model.ComposeRefType. */
export declare const COMPOSE_REF_TYPE = "ai";
/** Permanent provenance, never removed. Mirrors model.TagAIGenerated. */
export declare const TAG_AI_GENERATED = "ai-generated";
export interface ComposeParams {
    prompt: string;
    style: StudioStyle;
    ratio: StudioRatio;
    count: number;
    refAssetId?: string;
    refRatio?: string;
    refTmpToken?: string;
    refStrength?: number;
    /** For the batch header only — never sent. */
    refLabel?: string;
    restaurantId?: string;
}
export interface StudioItem {
    taskId: string;
    assetId: string;
    imageId: string;
    status: GenerationStatus;
    attempts: number;
    error?: string;
    url?: string;
    width?: number;
    height?: number;
    fileSizeBytes?: number;
    /** Local only: the merchant has confirmed this one, so ai-draft is off. */
    saved: boolean;
}
export interface StudioBatch {
    batchId: string;
    /** What this batch ran with, so regenerate and variantOf can reproduce it. */
    params: ComposeParams;
    items: StudioItem[];
}
export declare function isTerminal(status: GenerationStatus): boolean;
/**
 * Whether a batch still has work outstanding.
 *
 * A failed item counts as finished, not running — otherwise one permanently failed image
 * would keep the poll loop alive for the life of the page.
 */
export declare function batchIsRunning(items: StudioItem[]): boolean;
/**
 * Folds a poll's results into what is already on screen.
 *
 * `saved` is carried over because it is local state the server knows nothing about: without
 * that, a poll landing just after a save flips the button back to "save".
 *
 * An item the server did not mention is left untouched rather than dropped, so a partial
 * response cannot make tiles vanish.
 */
export declare function mergeBatchItems(existing: StudioItem[], fresh: BatchItem[]): StudioItem[];
/**
 * Maps the form's params onto the request body.
 *
 * Two things it does deliberately: drops `refLabel`, which exists only for the batch header,
 * and omits `refStrength` when nothing is being referenced — sending it would describe a
 * control the request does not have.
 */
export declare function toComposeRequest(params: ComposeParams): ComposeRequest;