export declare function setStateFilePath(path: string): void;
export declare function resetStateFilePath(): void;
export interface ArbPositionState {
    id: string;
    symbol: string;
    longExchange: string;
    shortExchange: string;
    longSize: number;
    shortSize: number;
    entryTime: string;
    entrySpread: number;
    entryLongPrice: number;
    entryShortPrice: number;
    accumulatedFunding: number;
    lastCheckTime: string;
    /** "perp-perp" (default) or "spot-perp" */
    mode?: "perp-perp" | "spot-perp";
    /** Spot leg exchange name (for spot-perp mode) */
    spotExchange?: string;
    /** Spot symbol, e.g. "ETH/USDC" (for spot-perp mode) */
    spotSymbol?: string;
}
export interface ArbDaemonState {
    version: 1;
    lastStartTime: string;
    lastScanTime: string;
    lastSuccessfulScanTime: string;
    positions: ArbPositionState[];
    config: {
        minSpread: number;
        closeSpread: number;
        size: number | "auto";
        holdDays: number;
        bridgeCost: number;
        maxPositions: number;
        settleStrategy: string;
        notifyUrl?: string;
    };
}
/** Load daemon state from disk. Falls back to .tmp if main file is corrupted. */
export declare function loadArbState(): ArbDaemonState | null;
/**
 * Save daemon state to disk using atomic write pattern.
 * Writes to .tmp first, then renames to main file.
 * If crash occurs mid-write, .tmp is partial but main file is intact.
 */
export declare function saveArbState(state: ArbDaemonState): void;
/** Add a position to the persisted state. Auto-initializes state if missing. */
export declare function addPosition(pos: ArbPositionState): void;
/** Remove a position by symbol from the persisted state. */
export declare function removePosition(symbol: string): void;
/** Update a position by symbol with partial updates. */
export declare function updatePosition(symbol: string, updates: Partial<ArbPositionState>): void;
/** Get all persisted positions. */
export declare function getPositions(): ArbPositionState[];
/** Create a default empty daemon state with the given config. */
export declare function createInitialState(config: ArbDaemonState["config"]): ArbDaemonState;