import type { SessionsListParams, SessionsPatchParams, SessionsPatchResult } from "../gateway/protocol/index.js";
import type { ResponseUsageMode, SessionInfo, SessionScope } from "./tui-types.js";
export type ChatSendOptions = {
    sessionKey: string;
    message: string;
    thinking?: string;
    deliver?: boolean;
    timeoutMs?: number;
    runId?: string;
};
export type TuiEvent = {
    event: string;
    payload?: unknown;
    seq?: number;
};
export type TuiSessionList = {
    ts: number;
    path: string;
    count: number;
    defaults?: {
        model?: string | null;
        modelProvider?: string | null;
        contextTokens?: number | null;
    };
    sessions: Array<Pick<SessionInfo, "thinkingLevel" | "fastMode" | "verboseLevel" | "reasoningLevel" | "model" | "contextTokens" | "inputTokens" | "outputTokens" | "totalTokens" | "modelProvider" | "displayName"> & {
        key: string;
        sessionId?: string;
        updatedAt?: number | null;
        fastMode?: boolean;
        sendPolicy?: string;
        responseUsage?: ResponseUsageMode;
        label?: string;
        provider?: string;
        groupChannel?: string;
        space?: string;
        subject?: string;
        chatType?: string;
        lastProvider?: string;
        lastTo?: string;
        lastAccountId?: string;
        derivedTitle?: string;
        lastMessagePreview?: string;
    }>;
};
export type TuiAgentsList = {
    defaultId: string;
    mainKey: string;
    scope: SessionScope;
    agents: Array<{
        id: string;
        name?: string;
    }>;
};
export type TuiModelChoice = {
    id: string;
    name: string;
    provider: string;
    contextWindow?: number;
    reasoning?: boolean;
};
export type TuiBackend = {
    connection: {
        url: string;
        token?: string;
        password?: string;
    };
    onEvent?: (evt: TuiEvent) => void;
    onConnected?: () => void;
    onDisconnected?: (reason: string) => void;
    onGap?: (info: {
        expected: number;
        received: number;
    }) => void;
    start: () => void;
    stop: () => void;
    sendChat: (opts: ChatSendOptions) => Promise<{
        runId: string;
    }>;
    abortChat: (opts: {
        sessionKey: string;
        runId: string;
    }) => Promise<{
        ok: boolean;
        aborted: boolean;
    }>;
    loadHistory: (opts: {
        sessionKey: string;
        limit?: number;
    }) => Promise<unknown>;
    listSessions: (opts?: SessionsListParams) => Promise<TuiSessionList>;
    listAgents: () => Promise<TuiAgentsList>;
    patchSession: (opts: SessionsPatchParams) => Promise<SessionsPatchResult>;
    resetSession: (key: string, reason?: "new" | "reset") => Promise<unknown>;
    getGatewayStatus: () => Promise<unknown>;
    listModels: () => Promise<TuiModelChoice[]>;
};