import { BaseStore } from '../storage';
export type Activity<Type extends string, ValueType> = {
    timestamp?: bigint;
    type: Type;
    id: string;
    value: ValueType;
};
export type WalletName = Activity<'WalletName', string>;
export type WalletDescription = Activity<'WalletDescription', string>;
export type TransactionFirstSeen = Activity<'TransactionFirstSeen', string>;
export type TransactionMemo = Activity<'TransactionMemo', string>;
export type XOWalletColor = Activity<'XOWalletColor', string>;
export type XOTransactionCategory = Activity<'XOTransactionCategory', string>;
export type XOFrozenCoin = Activity<'XOFrozenCoin', boolean>;
export type SnapshotByType = {
    [type: string]: {
        [id: string]: Activity<string, any>;
    };
};
export type PolicyFunction<T = any> = (existingActivity: Activity<string, T> | undefined, newActivity: Activity<string, T>) => Activity<string, T>;
export declare class Activities {
    store: BaseStore;
    snapshot: SnapshotByType;
    private policies;
    private storeKeyMap;
    constructor(store: BaseStore);
    /**
     * Get all activities of a specific type
     */
    getActivitiesByType<T>(type: string): Activity<string, T>[];
    /**
     * Get a specific activity by type and id
     */
    getActivity<T>(type: string, id: string): Activity<string, T> | undefined;
    /**
     * Process a single activity and update the snapshot
     */
    private processActivity;
    /**
     * Add a new activity to the store
     */
    addActivity(activity: Activity<string, any>): Promise<void>;
    /**
     * Compile a full snapshot from scratch (only needed for initialization or recovery)
     */
    compileSnapshot(): Promise<SnapshotByType>;
    /**
     * Register a policy for handling conflicts between activities of the same type
     * @param type Activity type to register policy for
     * @param policyFn Function that decides which activity to keep
     */
    registerPolicy(type: string, policyFn: PolicyFunction): void;
    /**
     * Get an activity from the snapshot by type and id
     */
    private getActivityFromSnapshot;
    /**
     * Set an activity in the snapshot, creating necessary object structure
     */
    private setActivityInSnapshot;
    /**
     * Get the snapshot key for an activity
     */
    private getSnapshotKey;
    /**
     * Apply policy to determine which activity should be kept
     */
    private applyPolicy;
}