/**
 * Gemini CLI hook event payload delivered on stdin.
 *
 * Gemini CLI invokes hooks as shell commands, passing JSON on stdin
 * and reading JSON from stdout. Exit code 2 blocks the action.
 *
 * Events: SessionStart, SessionEnd, BeforeAgent, AfterAgent,
 * BeforeModel, BeforeToolSelection, AfterModel, BeforeTool, AfterTool,
 * Notification, PreCompress.
 *
 * See: https://geminicli.com/docs/hooks/reference/
 */
export interface GeminiHookInput {
    session_id: string;
    transcript_path: string;
    cwd: string;
    hook_event_name: string;
    timestamp?: string;
    source?: string;
    reason?: string;
    prompt?: string;
    prompt_response?: string;
    stop_hook_active?: boolean;
    tool_name?: string;
    tool_input?: Record<string, unknown>;
    tool_response?: Record<string, unknown>;
    mcp_context?: Record<string, unknown>;
    original_request_name?: string;
    llm_request?: Record<string, unknown>;
    llm_response?: Record<string, unknown>;
    notification_type?: string;
    message?: string;
    details?: Record<string, unknown>;
    trigger?: "auto" | "manual";
}
/**
 * Gemini CLI hook output written to stdout.
 */
export interface GeminiHookOutput {
    decision?: "allow" | "deny" | "block";
    reason?: string;
    systemMessage?: string;
    continue?: boolean;
    stopReason?: string;
    suppressOutput?: boolean;
    hookSpecificOutput?: GeminiHookSpecificOutput;
}
export interface GeminiHookSpecificOutput {
    /** BeforeTool: override tool arguments */
    tool_input?: Record<string, unknown>;
    /** AfterTool: append to tool result */
    additionalContext?: string;
    /** AfterTool: chain a follow-up tool call */
    tailToolCallRequest?: Record<string, unknown>;
    /** AfterAgent: clear agent context */
    clearContext?: boolean;
    /** BeforeModel: synthesize an llm_response and short-circuit the model call */
    llm_response?: Record<string, unknown>;
    /** BeforeToolSelection: restrict the tools the model can pick */
    toolConfig?: {
        mode?: "AUTO" | "ANY" | "NONE";
        allowedFunctionNames?: string[];
    };
    [key: string]: unknown;
}