Worker (CloudFlare): Consulta de Documentos Dinámicos

Secretos Worker (Variables de Entorno)

API_KEY
SECRET_KEY
API_ENDPOINT

export default {
  async fetch(request, env, ctx) {
    return this.handleRequest(request,env);
  },

  async calculateHmac(secretKey, params) {
    const encoder = new TextEncoder();
    const dataString = Object.entries(params).sort().map(([key, value]) => `${key}=${value}`).join('');
    const secretKeyBytes = encoder.encode(secretKey);
    const dataBytes = encoder.encode(dataString);
    const hmac = await crypto.subtle.importKey("raw", secretKeyBytes, { name: "HMAC", hash: "SHA-256" }, false, ["sign"]);
    const signature = await crypto.subtle.sign("HMAC", hmac, dataBytes);
    return Array.from(new Uint8Array(signature)).map(b => b.toString(16).padStart(2, '0')).join('');
  },

  async sendSignedRequest(endpoint, path, postParams, apiKey, secretKey) {
    postParams['dinaup_apikey'] = apiKey;
    postParams['dinaup_usuarioip'] = "local";
    postParams['dinaup_usuarionavegador'] = "cloudflare_worker";
    postParams['signature'] = await this.calculateHmac(secretKey, postParams);

    const formData = new URLSearchParams();
    for (const [key, value] of Object.entries(postParams)) {
      formData.append(key, value);
    }

    const response = await fetch(`${endpoint}/${path}`, {
      method: "POST",
      body: formData,
      headers: { "Content-Type": "application/x-www-form-urlencoded" }
    });
    return response.text();
  },

  async handleRequest(request,env) {
    const url = new URL(request.url);
    const docdinamicoId = url.searchParams.get("docId");
    const params = Object.fromEntries(url.searchParams.entries());

    // Asegúrate de definir tus claves reales aquí
    const apiKey = env.API_KEY;
    const secretKey = env.SECRET_KEY;

    // Asegúrate de ajustar la URL del endpoint si es necesario
    const endpoint = env.API_ENDPOINT;

    // Envía la solicitud firmada a la API de Dinaup
    const responseJson = await this.sendSignedRequest(endpoint, "docdinamico", { ...params, 'dinaup_dd_id': docdinamicoId }, apiKey, secretKey);

    // Aquí puedes decidir cómo manejar y responder con el JSON recibido de la API
    return new Response(responseJson, { status: 200 });
  }

}

Last modified: 28 November 2024