/**
 * Storage abstraction for BrightChat services.
 *
 * This interface lives in brightchain-lib so that ConversationService,
 * GroupService, and ChannelService can depend on it without importing
 * brightchain-db. A BrightDb-backed implementation is provided at
 * construction time from application.ts.
 *
 * When no provider is injected (e.g. in unit tests), services fall back
 * to their existing in-memory Maps.
 *
 * Collection names (for BrightDb wiring):
 *   - brightchat_conversations
 *   - brightchat_messages
 *   - brightchat_groups
 *   - brightchat_group_messages
 *   - brightchat_channels
 *   - brightchat_channel_messages
 *   - brightchat_invite_tokens
 *   - brightchat_servers
 *   - brightchat_server_invites
 */
import { IChannel, ICommunicationMessage, IConversation, IGroup, IInviteToken } from '../communication';
import { IServer, IServerInviteToken } from './server';
/**
 * Minimal async CRUD collection interface.
 *
 * Mirrors the subset of operations that BrightChat services perform
 * on their internal Maps. Any backing store (BrightDb, in-memory, etc.)
 * can satisfy this contract.
 *
 * The `key` parameter in findById / update / delete is the logical
 * primary key for the entity (e.g. `id` for most types, `token` for
 * invite tokens).
 */
export interface IChatCollection<T> {
    /** Insert a new document. */
    create(doc: T): Promise<void>;
    /** Find a single document by its primary key, or return null. */
    findById(key: string): Promise<T | null>;
    /**
     * Find all documents matching a partial filter.
     * An empty/undefined filter returns all documents.
     */
    findMany(filter?: Partial<T>): Promise<T[]>;
    /** Replace the document with the matching primary key. */
    update(key: string, doc: T): Promise<void>;
    /** Delete the document with the matching primary key. */
    delete(key: string): Promise<void>;
}
/**
 * Groups all BrightChat collections behind a single injectable provider.
 *
 * Services receive this at construction time. Each getter returns a
 * typed collection backed by BrightDb (or an in-memory fallback).
 */
export interface IChatStorageProvider {
    /** Collection for 1-on-1 conversations (`brightchat_conversations`). */
    readonly conversations: IChatCollection<IConversation>;
    /** Collection for conversation messages (`brightchat_messages`). */
    readonly messages: IChatCollection<ICommunicationMessage>;
    /** Collection for group entities (`brightchat_groups`). */
    readonly groups: IChatCollection<IGroup>;
    /** Collection for group messages (`brightchat_group_messages`). */
    readonly groupMessages: IChatCollection<ICommunicationMessage>;
    /** Collection for channel entities (`brightchat_channels`). */
    readonly channels: IChatCollection<IChannel>;
    /** Collection for channel messages (`brightchat_channel_messages`). */
    readonly channelMessages: IChatCollection<ICommunicationMessage>;
    /** Collection for channel invite tokens (`brightchat_invite_tokens`). */
    readonly inviteTokens: IChatCollection<IInviteToken>;
    /** Collection for server entities (`brightchat_servers`). */
    readonly servers: IChatCollection<IServer>;
    /** Collection for server invite tokens (`brightchat_server_invites`). */
    readonly serverInvites: IChatCollection<IServerInviteToken>;
}
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