import { type ChatBootFailedStep } from "../../store/boot";
import { ConnectStatus } from "../../types/chat";
export type ChatBootPhase = "engine" | "connect" | "sync" | "ready" | "error";
export interface ChatBootState {
    phase: ChatBootPhase;
    /** Step that failed when `phase` is "error". */
    failedStep: ChatBootFailedStep | null;
    /** 0-100, meaningful in the "sync" phase. */
    syncProgress: number;
    /** The current step has run longer than the caller's `slowAfterMs`. */
    isSlow: boolean;
    /** False for the first moments, so a fast cached boot never flashes status text. */
    isStatusVisible: boolean;
}
export declare const BOOT_STATUS_DELAY_MS = 600;
/** A connect or sync step that sees no change for this long is treated as stuck. */
export declare const BOOT_STALL_MS = 30000;
interface ResolveBootPhaseInput {
    connectStatus: ConnectStatus;
    hasConnected: boolean;
    isFirstSyncDone: boolean;
    failedStep: ChatBootFailedStep | null;
}
export declare const resolveChatBootPhase: ({ connectStatus, hasConnected, isFirstSyncDone, failedStep, }: ResolveBootPhaseInput) => ChatBootPhase;
/** Where the chat engine is in its boot: WASM + login, connect, first sync, ready, or failed. */
export declare const useChatBootPhase: ({ slowAfterMs, }: {
    slowAfterMs: number;
}) => ChatBootState;
export {};
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