90 lines
3.3 KiB
TypeScript
90 lines
3.3 KiB
TypeScript
import { getAssetFromKV, mapRequestToAsset } from '@cloudflare/kv-asset-handler';
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import { onGe0Decode } from './ge0';
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const NOT_FOUND_REDIRECT_URL = 'https://organicmaps.app';
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const GE0_TEMPLATE_PATH = '/ge0.html';
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const APPSTORE = 'https://apps.apple.com/app/organic-maps/id1567437057';
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const GOOGLE = 'https://play.google.com/store/apps/details?id=app.organicmaps';
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const HUAWEI = 'https://appgallery.huawei.com/#/app/C104325611';
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const FDROID = 'https://f-droid.org/en/packages/app.organicmaps/';
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const OMAPS_REWRITE_RULES: Record<string, string> = {
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'/api': '/test.html',
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'/apple-touch-icon.png': '/icons/apple-touch-icon.png',
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'/apple-touch-icon-precomposed.png': '/icons/apple-touch-icon.png',
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'/apple-app-site-association': '/apple-app-site-association.json',
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// Hidden files and symlinks are not uploaded by wrangler.
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// See https://developers.cloudflare.com/workers/cli-wrangler/configuration#default-ignored-entries
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'/.well-known/apple-app-site-association': '/apple-app-site-association.json',
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'/.well-known/assetlinks.json': '/assetlinks.json',
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'/': '/get.html',
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'/app': '/get.html',
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'/get': '/get.html',
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'/im_get': '/get.html',
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'/install': '/get.html',
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'/test': '/test.html',
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'/test/': '/test.html',
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'/f': FDROID,
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'/fd': FDROID,
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'/fdroid': FDROID,
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'/g': GOOGLE,
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'/gp': GOOGLE,
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'/google': GOOGLE,
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'/googleplay': GOOGLE,
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'/h': HUAWEI,
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'/hw': HUAWEI,
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'/huawei': HUAWEI,
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'/i': APPSTORE,
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'/ios': APPSTORE,
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'/iphone': APPSTORE,
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'/ipad': APPSTORE,
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'/ipod': APPSTORE,
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};
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addEventListener('fetch', (event) => {
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try {
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event.respondWith(handleFetchEvent(event));
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} catch (e) {
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if (DEBUG) {
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event.respondWith(new Response(e.message || e.toString(), { status: 500 }));
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} else {
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// In case of unexpected errors, always redirect to the default url.
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event.respondWith(Response.redirect(NOT_FOUND_REDIRECT_URL, 302));
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}
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}
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});
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async function handleFetchEvent(event: FetchEvent) {
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const { hostname, pathname } = new URL(event.request.url);
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// First, process all known redirects.
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if ((DEBUG || hostname === 'omaps.app') && pathname in OMAPS_REWRITE_RULES) {
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if (OMAPS_REWRITE_RULES[pathname].startsWith('http')) return Response.redirect(OMAPS_REWRITE_RULES[pathname], 302);
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}
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// See https://github.com/cloudflare/kv-asset-handler#optional-arguments
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const getAssetOptions = {
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cacheControl: { bypassCache: DEBUG },
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mapRequestToAsset: (request: Request) => {
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if ((DEBUG || hostname === 'omaps.app') && pathname in OMAPS_REWRITE_RULES) {
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const url = new URL(request.url);
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url.pathname = OMAPS_REWRITE_RULES[pathname];
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request = new Request(url.toString(), request);
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}
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return mapRequestToAsset(request);
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},
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};
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// Try to return a static resource first.
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try {
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return await getAssetFromKV(event, getAssetOptions);
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} catch (_) { }
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// No static resource were found, try to handle a specific dynamic request.
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getAssetOptions.mapRequestToAsset = (request: Request) => {
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const url = new URL(request.url);
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url.pathname = GE0_TEMPLATE_PATH;
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return mapRequestToAsset(new Request(url.toString(), request));
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};
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const resp = await getAssetFromKV(event, getAssetOptions);
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const ge0HtmlTemplate = await resp.text();
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return onGe0Decode(ge0HtmlTemplate, event.request.url);
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}
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