ws402/dist/middleware.js

WebSocket implementation of X402 protocol for pay-as-you-go digital resources with automatic refunds

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createWS402Middleware = createWS402Middleware;
exports.isWS402Request = isWS402Request;
/**
 * Express middleware to serve WS402 schema
 */
function createWS402Middleware(ws402, options = {}) {
    const { resourceIdExtractor = (req) => req.params.resourceId || 'default', estimatedDurationExtractor = (req) => parseInt(req.query.duration) || 300, schemaEndpoint = '/ws402/schema/:resourceId', } = options;
    return (req, res, next) => {
        try {
            const resourceId = resourceIdExtractor(req);
            const estimatedDuration = estimatedDurationExtractor(req);
            const schema = ws402.generateSchema(resourceId, estimatedDuration);
            res.json(schema);
        }
        catch (error) {
            next(error);
        }
    };
}
/**
 * Check if request should be handled by WS402
 */
function isWS402Request(req) {
    return req.headers['x-protocol'] === 'ws402' ||
        req.query.protocol === 'ws402';
}