Kobaru

import { Hono } from "hono";
import { serve } from "@hono/node-server";
import { cors } from "hono/cors";
import { paymentMiddleware, x402ResourceServer } from "@x402/hono";
import { ExactEvmScheme } from "@x402/evm/exact/server";
import { HTTPFacilitatorClient } from "@x402/core/server";
import "dotenv/config";

const app = new Hono();
app.use("*", cors());

async function main() {
  // Configure Kobaru facilitator
  const facilitatorUrl = "https://gateway.kobaru.io";
  const facilitatorClient = new HTTPFacilitatorClient({
    url: facilitatorUrl
        })
  

  // Register EVM payment scheme for SKALE
  const resourceServer = new x402ResourceServer(facilitatorClient);
  resourceServer.register("eip155:*", new ExactEvmScheme());

  // Fetch token metadata from Kobaru instead of hardcoding
  const networkId = "eip155:324705682"; // SKALE Base Mainnet
  const assetAddress = "0x2e08028E3C4c2356572E096d8EF835cD5C6030bD"; // USDC on SKALE Base

  // Define payment requirements
  const routes = {
    "GET /api/data": {
      accepts: [
        {
          scheme: "exact",
          network: networkId,
          payTo: process.env.WALLET_ADDRESS as `0x${string}`,
          price: {
            amount: "1000", // 0.001 USDC
            asset: assetAddress,
            extra: { 
              name: "USDC", 
              version: "2" 
              }
          }
        }
      ],
      description: "Premium data access",
      mimeType: "application/json"
    }
  };

  // Apply payment middleware
  app.use("*", paymentMiddleware(routes, resourceServer));

  // Protected endpoint
  app.get("/api/data", (c) => {
    return c.json({
      message: "Premium data unlocked!",
      timestamp: new Date().toISOString()
    });
  });

  const port = 3000;
  serve({ fetch: app.fetch, port }, () => {
    console.log(`Server running on http://localhost:${port}`);
    console.log(`Using Kobaru facilitator: ${facilitatorUrl}`);
  });
}

main().catch(console.error);