Country code redirect

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This creates a repository in your GitHub account and deploys the application to Cloudflare Workers.

JavaScript

JavaScript

export default {
  async fetch(request) {
    /**
     * A map of the URLs to redirect to
     * @param {Object} countryMap
     */
    const countryMap = {
      US: "https://example.com/us",
      EU: "https://example.com/eu",
    };

    // Use the cf object to obtain the country of the request
    // more on the cf object: https://developers.cloudflare.com/workers/runtime-apis/request#incomingrequestcfproperties
    const country = request.cf.country;

    if (country != null && country in countryMap) {
      const url = countryMap[country];
      // Remove this logging statement from your final output.
      console.log(
        `Based on ${country}-based request, your user would go to ${url}.`,
      );
      return Response.redirect(url);
    } else {
      return fetch("https://example.com", request);
    }
  },
};

TypeScript

TypeScript

export default {
  async fetch(request): Promise<Response> {
    /**
     * A map of the URLs to redirect to
     * @param {Object} countryMap
     */
    const countryMap = {
      US: "https://example.com/us",
      EU: "https://example.com/eu",
    };

    // Use the cf object to obtain the country of the request
    // more on the cf object: https://developers.cloudflare.com/workers/runtime-apis/request#incomingrequestcfproperties
    const country = request.cf.country;

    if (country != null && country in countryMap) {
      const url = countryMap[country];
      return Response.redirect(url);
    } else {
      return fetch(request);
    }
  },
} satisfies ExportedHandler;

Python

Python

from workers import WorkerEntrypoint, Response, fetch

class Default(WorkerEntrypoint):
    async def fetch(self, request):
        countries = {
            "US": "https://example.com/us",
            "EU": "https://example.com/eu",
        }

        # Use the cf object to obtain the country of the request
        # more on the cf object: https://developers.cloudflare.com/workers/runtime-apis/request#incomingrequestcfproperties
        country = request.cf.country

        if country and country in countries:
            url = countries[country]
            return Response.redirect(url)

        return fetch("https://example.com", request)

Hono

TypeScript

import { Hono } from 'hono';

// Define the RequestWithCf interface to add Cloudflare-specific properties
interface RequestWithCf extends Request {
  cf: {
    country: string;
    // Other CF properties can be added as needed
  };
}

const app = new Hono();

app.get('*', async (c) => {
  /**
   * A map of the URLs to redirect to
   */
  const countryMap: Record<string, string> = {
    US: "https://example.com/us",
    EU: "https://example.com/eu",
  };

  // Cast the raw request to include Cloudflare-specific properties
  const request = c.req.raw as RequestWithCf;

  // Use the cf object to obtain the country of the request
  // more on the cf object: https://developers.cloudflare.com/workers/runtime-apis/request#incomingrequestcfproperties
  const country = request.cf.country;

  if (country != null && country in countryMap) {
    const url = countryMap[country];
    // Redirect using Hono's redirect helper
    return c.redirect(url);
  } else {
    // Default fallback
    return fetch("https://example.com", request);
  }
});

export default app;