import type { FrontMcpLogger } from '../../common';
import type { ChannelInstance } from '../channel.instance';
import type { ChannelWebhookSource } from '../../common/metadata/channel.metadata';
/**
 * Webhook request context passed to channel handlers.
 */
export interface WebhookPayload {
    /** The raw request body */
    body: unknown;
    /** Request headers (lowercase keys) */
    headers: Record<string, string | string[] | undefined>;
    /** HTTP method */
    method: string;
    /** Query parameters */
    query?: Record<string, string>;
}
/**
 * Creates an Express/Fastify-compatible middleware handler for a webhook channel.
 *
 * The middleware:
 * 1. Accepts POST requests at the configured path
 * 2. Passes the request body as the payload to the channel's onEvent handler
 * 3. Pushes the resulting notification to all capable Claude Code sessions
 * 4. Returns 200 on success, 500 on error
 *
 * @param channel - The channel instance
 * @param sourceConfig - The webhook source configuration
 * @param logger - Logger instance
 * @returns A middleware function compatible with Express/Fastify
 */
export declare function createWebhookMiddleware(channel: ChannelInstance, sourceConfig: ChannelWebhookSource, logger: FrontMcpLogger): (req: {
    body?: unknown;
    headers?: Record<string, unknown>;
    method?: string;
    query?: unknown;
}, res: {
    status: (code: number) => {
        json: (body: unknown) => void;
    };
    json?: (body: unknown) => void;
}) => Promise<void>;
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