/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { Config, GitService, Logger } from '@aetherai/aether-core';
import type { Content, PartListUnion } from '@google/genai';
import type { MutableRefObject, ReactNode } from 'react';
import type { LoadedSettings } from '../../config/settings.js';
import type { SessionStatsState } from '../contexts/SessionContext.js';
import type { UseHistoryManagerReturn } from '../hooks/useHistoryManager.js';
import type { ExtensionUpdateAction, ExtensionUpdateStatus } from '../state/extensions.js';
import type { ConfirmationRequest, HistoryItem, HistoryItemBtw, HistoryItemWithoutId } from '../types.js';
export interface CommandContext {
    /**
     * Execution mode for the current invocation.
     *
     * - interactive: React/Ink UI mode
     * - non_interactive: non-interactive CLI mode (text/json)
     * - acp: ACP/Zed integration mode
     */
    executionMode?: 'interactive' | 'non_interactive' | 'acp';
    invocation?: {
        /** The raw, untrimmed input string from the user. */
        raw: string;
        /** The primary name of the command that was matched. */
        name: string;
        /** The arguments string that follows the command name. */
        args: string;
    };
    services: {
        config: Config | null;
        settings: LoadedSettings;
        git: GitService | undefined;
        logger: Logger | null;
    };
    ui: {
        /** Adds a new item to the history display. */
        addItem: UseHistoryManagerReturn['addItem'];
        /** Clears all history items and the console screen. */
        clear: () => void;
        /**
         * Sets the transient debug message displayed in the application footer in debug mode.
         */
        setDebugMessage: (message: string) => void;
        /** The currently pending history item, if any. */
        pendingItem: HistoryItemWithoutId | null;
        /**
         * Sets a pending item in the history, which is useful for indicating
         * that a long-running operation is in progress.
         *
         * @param item The history item to display as pending, or `null` to clear.
         */
        setPendingItem: (item: HistoryItemWithoutId | null) => void;
        /** The current btw side-question item rendered in the fixed bottom area. */
        btwItem: HistoryItemBtw | null;
        /** Sets the btw item independently of the main pendingItem. */
        setBtwItem: (item: HistoryItemBtw | null) => void;
        /** Cancels a pending btw (aborts the in-flight API call and clears the btw area). */
        cancelBtw: () => void;
        /** Ref to the btw AbortController, set by btwCommand so cancelBtw can abort it. */
        btwAbortControllerRef: MutableRefObject<AbortController | null>;
        /**
         * Loads a new set of history items, replacing the current history.
         *
         * @param history The array of history items to load.
         */
        loadHistory: UseHistoryManagerReturn['loadHistory'];
        toggleVimEnabled: () => Promise<boolean>;
        setGeminiMdFileCount: (count: number) => void;
        reloadCommands: () => void;
        extensionsUpdateState: Map<string, ExtensionUpdateStatus>;
        dispatchExtensionStateUpdate: (action: ExtensionUpdateAction) => void;
        addConfirmUpdateExtensionRequest: (value: ConfirmationRequest) => void;
    };
    session: {
        stats: SessionStatsState;
        /** A transient list of shell commands the user has approved for this session. */
        sessionShellAllowlist: Set<string>;
        /** Reset session metrics and prompt counters for a fresh session. */
        startNewSession?: (sessionId: string) => void;
    };
    overwriteConfirmed?: boolean;
    /** Abort signal for cancelling long-running slash command operations via ESC. */
    abortSignal?: AbortSignal;
}
/**
 * The return type for a command action that results in scheduling a tool call.
 */
export interface ToolActionReturn {
    type: 'tool';
    toolName: string;
    toolArgs: Record<string, unknown>;
}
/** The return type for a command action that results in the app quitting. */
export interface QuitActionReturn {
    type: 'quit';
    messages: HistoryItem[];
}
/**
 * The return type for a command action that results in a simple message
 * being displayed to the user.
 */
export interface MessageActionReturn {
    type: 'message';
    messageType: 'info' | 'error';
    content: string;
}
/**
 * The return type for a command action that streams multiple messages.
 * Used for long-running operations that need to send progress updates.
 */
export interface StreamMessagesActionReturn {
    type: 'stream_messages';
    messages: AsyncGenerator<{
        messageType: 'info' | 'error';
        content: string;
    }, void, unknown>;
}
/**
 * The return type for a command action that needs to open a dialog.
 */
export interface OpenDialogActionReturn {
    type: 'dialog';
    dialog: 'help' | 'arena_start' | 'arena_select' | 'arena_stop' | 'arena_status' | 'auth' | 'theme' | 'editor' | 'settings' | 'model' | 'fast-model' | 'subagent_create' | 'subagent_list' | 'trust' | 'permissions' | 'approval-mode' | 'resume' | 'extensions_manage' | 'hooks' | 'mcp';
}
/**
 * The return type for a command action that results in replacing
 * the entire conversation history.
 */
export interface LoadHistoryActionReturn {
    type: 'load_history';
    history: HistoryItemWithoutId[];
    clientHistory: Content[];
}
/**
 * The return type for a command action that should immediately submit
 * content as a prompt to the Gemini model.
 */
export interface SubmitPromptActionReturn {
    type: 'submit_prompt';
    content: PartListUnion;
}
/**
 * The return type for a command action that needs to pause and request
 * confirmation for a set of shell commands before proceeding.
 */
export interface ConfirmShellCommandsActionReturn {
    type: 'confirm_shell_commands';
    /** The list of shell commands that require user confirmation. */
    commandsToConfirm: string[];
    /** The original invocation context to be re-run after confirmation. */
    originalInvocation: {
        raw: string;
    };
}
export interface ConfirmActionReturn {
    type: 'confirm_action';
    /** The React node to display as the confirmation prompt. */
    prompt: ReactNode;
    /** The original invocation context to be re-run after confirmation. */
    originalInvocation: {
        raw: string;
    };
}
export type SlashCommandActionReturn = ToolActionReturn | MessageActionReturn | StreamMessagesActionReturn | QuitActionReturn | OpenDialogActionReturn | LoadHistoryActionReturn | SubmitPromptActionReturn | ConfirmShellCommandsActionReturn | ConfirmActionReturn;
export declare enum CommandKind {
    BUILT_IN = "built-in",
    FILE = "file",
    MCP_PROMPT = "mcp-prompt",
    SKILL = "skill"
}
export interface CommandCompletionItem {
    value: string;
    label?: string;
    description?: string;
}
export interface SlashCommand {
    name: string;
    altNames?: string[];
    description: string;
    hidden?: boolean;
    kind: CommandKind;
    extensionName?: string;
    action?: (context: CommandContext, args: string) => undefined | SlashCommandActionReturn | Promise<undefined | SlashCommandActionReturn>;
    completion?: (context: CommandContext, partialArg: string) => Promise<Array<string | CommandCompletionItem> | null>;
    subCommands?: SlashCommand[];
}