n8n-mcp/dist/triggers/handlers/webhook-handler.js

"use strict";
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        __setModuleDefault(result, mod);
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Object.defineProperty(exports, "__esModule", { value: true });
exports.WebhookHandler = void 0;
const zod_1 = require("zod");
const base_handler_1 = require("./base-handler");
const trigger_detector_1 = require("../trigger-detector");
const webhookInputSchema = zod_1.z.object({
    workflowId: zod_1.z.string(),
    triggerType: zod_1.z.literal('webhook'),
    httpMethod: zod_1.z.enum(['GET', 'POST', 'PUT', 'DELETE']).optional(),
    webhookPath: zod_1.z.string().optional(),
    data: zod_1.z.record(zod_1.z.unknown()).optional(),
    headers: zod_1.z.record(zod_1.z.string()).optional(),
    timeout: zod_1.z.number().optional(),
    waitForResponse: zod_1.z.boolean().optional(),
});
class WebhookHandler extends base_handler_1.BaseTriggerHandler {
    constructor() {
        super(...arguments);
        this.triggerType = 'webhook';
        this.capabilities = {
            requiresActiveWorkflow: true,
            supportedMethods: ['GET', 'POST', 'PUT', 'DELETE'],
            canPassInputData: true,
        };
        this.inputSchema = webhookInputSchema;
    }
    async execute(input, workflow, triggerInfo) {
        const startTime = Date.now();
        try {
            const baseUrl = this.getBaseUrl();
            if (!baseUrl) {
                return this.errorResponse(input, 'Cannot determine n8n base URL', startTime);
            }
            let webhookUrl;
            if (input.webhookPath) {
                webhookUrl = `${baseUrl.replace(/\/+$/, '')}/webhook/${input.webhookPath}`;
            }
            else if (triggerInfo?.webhookPath) {
                webhookUrl = (0, trigger_detector_1.buildTriggerUrl)(baseUrl, triggerInfo, 'production');
            }
            else {
                return this.errorResponse(input, 'No webhook path available. Provide webhookPath parameter or ensure workflow has a webhook trigger.', startTime);
            }
            const httpMethod = input.httpMethod || triggerInfo?.httpMethod || 'POST';
            const { SSRFProtection } = await Promise.resolve().then(() => __importStar(require('../../utils/ssrf-protection')));
            const validation = await SSRFProtection.validateWebhookUrl(webhookUrl);
            if (!validation.valid) {
                return this.errorResponse(input, `SSRF protection: ${validation.reason}`, startTime);
            }
            const webhookRequest = {
                webhookUrl,
                httpMethod: httpMethod,
                data: input.data,
                headers: input.headers,
                waitForResponse: input.waitForResponse ?? true,
            };
            const response = await this.client.triggerWebhook(webhookRequest);
            return this.normalizeResponse(response, input, startTime, {
                status: response.status,
                statusText: response.statusText,
                metadata: {
                    duration: Date.now() - startTime,
                    webhookPath: input.webhookPath || triggerInfo?.webhookPath,
                    httpMethod,
                },
            });
        }
        catch (error) {
            const errorMessage = error instanceof Error ? error.message : 'Unknown error';
            const errorDetails = error?.details;
            const executionId = errorDetails?.executionId || errorDetails?.id;
            return this.errorResponse(input, errorMessage, startTime, {
                executionId,
                code: error?.code,
                details: errorDetails,
            });
        }
    }
}
exports.WebhookHandler = WebhookHandler;
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