export type PgpOwnertrust = 'unknown' | 'never' | 'marginal' | 'full' | 'ultimate';
export type StorageUnit = 'MB' | 'GB' | 'TB';
export type DataFeedRetentionPolicy = 'append-only' | 'replace-snapshot';
export interface DataFeedSubscription {
    id: string;
    dataSourceId: string;
    peerId: string;
    datastoreKey: string | null;
    standardId: string;
    providerName: string;
    providerId: string | null;
    providerPublicKey: string | null;
    sourceName: string | null;
    remoteRows: number;
    storageCap: number;
    storageUnit: StorageUnit;
    syncFilter: string;
    queryProfile: string;
    retentionPolicy: DataFeedRetentionPolicy;
    createdAt: string;
    updatedAt: string;
}
export interface DataFeedSubscriptionInput {
    dataSourceId: string;
    peerId: string;
    datastoreKey?: string | null;
    standardId: string;
    providerName: string;
    providerId?: string | null;
    providerPublicKey: string | null;
    sourceName?: string | null;
    remoteRows: number;
    storageCap: number;
    storageUnit: StorageUnit;
    syncFilter: string;
    queryProfile?: string | null;
    retentionPolicy?: string | null;
}
export interface DataDirectoryState {
    peerTrust: Record<string, PgpOwnertrust>;
    subscriptions: DataFeedSubscription[];
}
export interface DataDirectoryMigrationSource {
    dataSourceId: string;
    peerId: string;
    providerName: string;
    providerId?: string | null;
    providerPublicKey: string | null;
    sourceName?: string | null;
    legacyDataSourceIds?: string[];
    defaultStandardIds?: string[];
    remoteRowsByStandard?: Record<string, number>;
}
export interface LegacySchemaSyncPreference {
    mode?: unknown;
    storageCap?: unknown;
    storageUnit?: unknown;
}
export interface LegacySchemaSyncProgress {
    totalRows?: unknown;
}
export interface DataDirectoryStorage {
    getItem(key: string): string | null;
    setItem(key: string, value: string): void;
}
export declare const DATA_DIRECTORY_STORAGE_KEY = "sdn:data-directory:v1";
export declare const PGP_OWNERTRUST_LEVELS: PgpOwnertrust[];
export declare const DEFAULT_OWNERTRUST: PgpOwnertrust;
export declare const DATA_SOURCE_OWNERTRUST: PgpOwnertrust;
export declare const DEFAULT_DATA_FEED_QUERY_PROFILE = "dataset-publication-offset-v1";
export declare const DEFAULT_DATA_FEED_RETENTION_POLICY: DataFeedRetentionPolicy;
export declare const DATA_FEED_RETENTION_POLICIES: DataFeedRetentionPolicy[];
export declare function normalizeOwnertrust(value: unknown): PgpOwnertrust;
export declare function isTrustedDirectoryOwnertrust(value: unknown): boolean;
export declare function ownertrustForDataSourceSubscription(current: unknown): PgpOwnertrust;
export declare function subscriptionKey(dataSourceId: string, standardId: string, datastoreKey?: string | null): string;
export declare function updatePeerOwnertrust(state: DataDirectoryState, peerId: string, ownertrust: PgpOwnertrust): DataDirectoryState;
export declare function upsertDataFeedSubscription(state: DataDirectoryState, input: DataFeedSubscriptionInput): DataDirectoryState;
export declare function updateDataFeedSubscription(state: DataDirectoryState, subscriptionId: string, patch: Partial<Pick<DataFeedSubscription, 'providerId' | 'sourceName' | 'remoteRows' | 'storageCap' | 'storageUnit' | 'syncFilter' | 'queryProfile' | 'retentionPolicy'>>): DataDirectoryState;
export declare function removeDataFeedSubscription(state: DataDirectoryState, subscriptionId: string): DataDirectoryState;
export declare function migrateSchemaSyncPreferencesToDataDirectory(state: DataDirectoryState, preferences: Record<string, LegacySchemaSyncPreference>, sources: DataDirectoryMigrationSource[], progress?: Record<string, LegacySchemaSyncProgress>): DataDirectoryState;
export declare function ensureReplaceSnapshotDataFeedSubscriptions(state: DataDirectoryState, sources: DataDirectoryMigrationSource[]): DataDirectoryState;
export declare function canonicalizeDataDirectorySourceIds(state: DataDirectoryState, sources: DataDirectoryMigrationSource[]): DataDirectoryState;
export declare function normalizeDataDirectoryState(value: unknown): DataDirectoryState;
export declare function loadDataDirectoryState(storage?: DataDirectoryStorage | null): DataDirectoryState;
export declare function persistDataDirectoryState(state: DataDirectoryState, storage?: DataDirectoryStorage | null): void;
export declare function emptyDataDirectoryState(): DataDirectoryState;
export declare function defaultDataFeedRetentionPolicy(standardId: unknown): DataFeedRetentionPolicy;
export declare function normalizeDataFeedRetentionPolicy(value: unknown, standardId: unknown): DataFeedRetentionPolicy;
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