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

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.ChatHandler = void 0;
const zod_1 = require("zod");
const axios_1 = __importDefault(require("axios"));
const base_handler_1 = require("./base-handler");
const trigger_detector_1 = require("../trigger-detector");
const chatInputSchema = zod_1.z.object({
    workflowId: zod_1.z.string(),
    triggerType: zod_1.z.literal('chat'),
    message: zod_1.z.string(),
    sessionId: 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(),
});
function generateSessionId() {
    return `session_${Date.now()}_${Math.random().toString(36).substring(2, 11)}`;
}
class ChatHandler extends base_handler_1.BaseTriggerHandler {
    constructor() {
        super(...arguments);
        this.triggerType = 'chat';
        this.capabilities = {
            requiresActiveWorkflow: true,
            canPassInputData: true,
        };
        this.inputSchema = chatInputSchema;
    }
    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 chatUrl;
            if (triggerInfo?.webhookPath) {
                chatUrl = (0, trigger_detector_1.buildTriggerUrl)(baseUrl, triggerInfo, 'production');
            }
            else {
                chatUrl = `${baseUrl.replace(/\/+$/, '')}/webhook/${input.workflowId}`;
            }
            const { SSRFProtection } = await Promise.resolve().then(() => __importStar(require('../../utils/ssrf-protection')));
            const validation = await SSRFProtection.validateWebhookUrl(chatUrl);
            if (!validation.valid) {
                return this.errorResponse(input, `SSRF protection: ${validation.reason}`, startTime);
            }
            const sessionId = input.sessionId || generateSessionId();
            const chatPayload = {
                action: 'sendMessage',
                sessionId,
                chatInput: input.message,
                ...input.data,
            };
            const config = {
                method: 'POST',
                url: chatUrl,
                headers: {
                    'Content-Type': 'application/json',
                    ...input.headers,
                },
                data: chatPayload,
                timeout: input.timeout || (input.waitForResponse !== false ? 120000 : 30000),
                validateStatus: (status) => status < 500,
            };
            const response = await axios_1.default.request(config);
            const chatResponse = response.data;
            return this.normalizeResponse(chatResponse, input, startTime, {
                status: response.status,
                statusText: response.statusText,
                metadata: {
                    duration: Date.now() - startTime,
                    sessionId,
                    webhookPath: triggerInfo?.webhookPath,
                },
            });
        }
        catch (error) {
            const errorMessage = error instanceof Error ? error.message : 'Unknown error';
            const errorDetails = error?.response?.data;
            const executionId = errorDetails?.executionId || errorDetails?.id;
            return this.errorResponse(input, errorMessage, startTime, {
                executionId,
                code: error?.code,
                details: errorDetails,
            });
        }
    }
}
exports.ChatHandler = ChatHandler;
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