Blocks certain countries from accessing your page, while giving the flexibility to whitelist certain paths.

cloudflare-block-countries-worker.js

addEventListener('fetch', event => {
    event.respondWith(byPassOrBlock(event.request))
})

async function byPassOrBlock(request) {
    let url = new URL(request.url)

    let blockedCountries = ['XX']
    let whitelistedPaths = ['/about*']

    for (let i=0; i<whitelistedPaths.length; i++) {
        if (new RegExp("^" + whitelistedPaths[i].split("*").join(".*") + "$").test(url.pathname)) {
          return fetch(request)
        }
    }

    if (blockedCountries.includes(request.headers.get('cf-ipcountry'))) {
        // Return a Forbidden response
        return new Response('Sorry, this page is not available.', { status: 403, statusText: 'Forbidden' })

        // Or, alternatively, return a redirect. Make sure to whitelist this to avoid loops
        // return Response.redirect('https://example.com')
    }
    
    return fetch(request)
}