/**
 * Copilot CLI process driver for AgentLink.
 *
 * Parallel to claude.ts but simpler:
 * - Each turn spawns a new `copilot --output-format json` process
 * - Prompt is written to stdin to avoid command-line length limits
 * - No persistent process, no control_request protocol
 * - JSONL stdout parsed and emitted as backend_event messages
 * - Session state stored at ~/.copilot/session-state/<id>/
 */
import { type ChildProcess } from 'child_process';
import type { SendFn } from './claude.js';
import type { SessionInfo } from './history.js';
import { type HistoryMessage } from './history-message-transform.js';
import { copilotCapabilities } from './backends/types.js';
export interface CopilotConversationState {
    conversationId: string;
    child: ChildProcess | null;
    abortController: AbortController | null;
    copilotSessionId: string | null;
    lastCopilotSessionId: string | null;
    workDir: string;
    turnActive: boolean;
    providerId: string;
    model: string | null;
    contextTier: CopilotContextTier | null;
    reasoningEffort: CopilotReasoningEffort | null;
    turnId: string | null;
    stateVersion: number;
    heartbeatTimer: ReturnType<typeof setInterval> | null;
    /** True once we've sent session_started for sidebar refresh */
    sessionNotified: boolean;
}
export type CopilotContextTier = 'default' | 'long_context';
export type CopilotReasoningEffort = 'none' | 'low' | 'medium' | 'high' | 'xhigh' | 'max';
export interface CopilotRunOptions {
    model?: string;
    context?: string;
    effort?: string;
}
interface NormalizedCopilotRunOptions {
    model?: string;
    context?: CopilotContextTier;
    effort?: CopilotReasoningEffort;
}
interface CopilotChatFile {
    name: string;
    mimeType: string;
    data: string;
}
export declare function addCopilotSendFn(fn: SendFn): () => void;
export declare function getCopilotConversation(conversationId: string): CopilotConversationState | undefined;
export declare function getCopilotConversations(): Map<string, CopilotConversationState>;
/**
 * Rebind a running copilot conversation to a new conversationId.
 * Used when web client refreshes and generates a new UUID for the same session.
 * Returns true if a running conversation was found and rebound.
 */
export declare function rebindCopilotConversation(copilotSessionId: string, newConvId: string): boolean;
export declare function createCopilotPlaceholder(conversationId: string, opts?: {
    providerId?: string;
}): void;
export declare function restartCopilotConversation(conversationId: string, opts?: {
    providerId?: string;
    model?: string;
}): {
    wasTurnActive: boolean;
    copilotSessionId: string | null;
};
export declare function setModel(conversationId: string | undefined, model: string): void;
export interface CopilotChatOptions {
    resumeSessionId?: string;
    providerId?: string;
    copilotOptions?: CopilotRunOptions;
}
export declare function normalizeCopilotRunOptions(input?: CopilotRunOptions): {
    options: NormalizedCopilotRunOptions;
    error?: string;
};
export declare function handleCopilotChat(conversationId: string, text: string, workDir: string, options?: CopilotChatOptions, files?: CopilotChatFile[]): void;
export declare function cancelCopilotExecution(conversationId: string): void;
export declare function cleanupAllCopilotConversations(): void;
interface CopilotSessionPage {
    sessions: SessionInfo[];
    hasMore: boolean;
    nextCursor?: string;
}
interface CopilotGlobalSessionInfo {
    sessionId: string;
    projectPath: string;
    projectFolder: string;
    stableIdentity?: string;
    title: string;
    firstPrompt: string;
    lastModified: number;
}
interface CopilotGlobalSessionPage {
    sessions: CopilotGlobalSessionInfo[];
    hasMore: boolean;
    nextCursor?: string;
    indexState: 'ready';
}
export declare function listCopilotSessions(workDir: string): SessionInfo[];
export declare function listCopilotSessionsPage(workDir: string, options?: {
    limit?: number;
    cursor?: string;
}): CopilotSessionPage;
export declare function readCopilotSessionMessages(_workDir: string, sessionId: string): HistoryMessage[];
export declare function getCopilotSessionWorkDir(sessionId: string): string | undefined;
export declare function listAllCopilotSessions(limit?: number): Array<{
    sessionId: string;
    projectPath: string;
    projectFolder: string;
    title: string;
    firstPrompt: string;
    lastModified: number;
}>;
export declare function listAllCopilotSessionsPage(options?: {
    limit?: number;
    cursor?: string;
}): CopilotGlobalSessionPage;
export declare function renameCopilotSession(_workDir: string, sessionId: string, newTitle: string): boolean;
export declare function moveCopilotSession(_fromWorkDir: string, toWorkDir: string, sessionId: string): boolean;
export declare function deleteCopilotSession(_workDir: string, sessionId: string): boolean;
export { copilotCapabilities };