import type { MulticastObservable } from '@dxos/async';
import type { Database } from '@dxos/echo';
import type { PublicKey, SpaceId } from '@dxos/keys';
import type { Invitation, SpaceArchive } from '@dxos/protocols/proto/dxos/client/services';
import type { MembershipPolicy } from '@dxos/protocols/proto/dxos/halo/credentials';
import type { AuthenticatingInvitation } from './invitations';
import type { Space } from './space';
import type { SpaceProperties } from './types';
/**
 * Public database API.
 */
export interface Echo extends MulticastObservable<Space[]>, Database.Queryable {
    /**
     * Returns the list of spaces.
     */
    get(): Space[];
    /**
     * Returns the space with the given id.
     */
    get(id: SpaceId): Space | undefined;
    /**
     * Returns the space with the given key.
     * @deprecated Use `get(id: SpaceId)`.
     */
    get(spaceKey: PublicKey): Space | undefined;
    /**
     * Creates a new space.
     */
    create(props?: Pick<SpaceProperties, 'name' | 'hue' | 'icon' | 'invocationTraceFeed'>, options?: {
        tags?: string[];
        membershipPolicy?: MembershipPolicy;
    }): Promise<Space>;
    /**
     * Creates a space from the given archive.
     */
    import(archive: SpaceArchive, options?: {
        tags?: string[];
    }): Promise<Space>;
    /**
     * Joins an existing space using the given invitation.
     */
    join(invitation: Invitation | string): AuthenticatingInvitation;
    joinBySpaceKey(spaceKey: PublicKey): Promise<Space>;
}
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