refactor(deploy): cloudflare serve

packages/waku/src/lib/plugins/vite-plugin-deploy-cloudflare.ts

@@ -7,35 +7,44 @@ import {
   rmSync,
   writeFileSync,
 } from 'node:fs';
-import { normalizePath } from 'vite';
 import type { Plugin } from 'vite';
 
 import { unstable_getPlatformObject } from '../../server.js';
-import { EXTENSIONS, SRC_ENTRIES } from '../constants.js';
-import {
-  decodeFilePathFromAbsolute,
-  extname,
-  fileURLToFilePath,
-  joinPath,
-} from '../utils/path.js';
-import { DIST_SERVE_JS, DIST_PUBLIC } from '../builder/constants.js';
-
-const resolveFileName = (fname: string) => {
-  for (const ext of EXTENSIONS) {
-    const resolvedName = fname.slice(0, -extname(fname).length) + ext;
-    if (existsSync(resolvedName)) {
-      return resolvedName;
-    }
+import { SRC_ENTRIES } from '../constants.js';
+import { DIST_PUBLIC } from '../builder/constants.js';
+
+const SERVE_JS = 'serve-vercel.js';
+
+const getServeJsContent = (srcEntriesFile: string) => `
+import { runner, Hono } from 'waku/unstable_hono';
+
+const loadEntries = () => import('${srcEntriesFile}');
+let serveWaku;
+
+const app = new Hono();
+app.use('*', (c, next) => serveWaku!(c, next));
+app.notFound(async (c) => {
+  const assetsFetcher = c.env.ASSETS;
+  const url = new URL(c.req.raw.url);
+  const errorHtmlUrl = url.origin + '/404.html';
+  const notFoundStaticAssetResponse = await assetsFetcher.fetch(
+    new URL(errorHtmlUrl),
+  );
+  if (notFoundStaticAssetResponse && notFoundStaticAssetResponse.status < 400) {
+    return c.body(notFoundStaticAssetResponse.body, 404);
   }
-  return fname; // returning the default one
-};
+  return c.text('404 Not Found', 404);
+});
 
-const srcServeFile = decodeFilePathFromAbsolute(
-  joinPath(
-    fileURLToFilePath(import.meta.url),
-    '../../builder/serve-cloudflare.js',
-  ),
-);
+export default {
+  async fetch(request, env, ctx) {
+    if (!serveWaku) {
+      serveWaku = runner({ cmd: 'start', loadEntries, env });
+    }
+    return app.fetch(request, env, ctx);
+  },
+};
+`;
 
 const getFiles = (dir: string, files: string[] = []): string[] => {
   const entries = readdirSync(dir, { withFileTypes: true });
@@ -64,35 +73,22 @@ export function deployCloudflarePlugin(opts: {
 }): Plugin {
   const platformObject = unstable_getPlatformObject();
   let rootDir: string;
+  let entriesFile: string;
   return {
     name: 'deploy-cloudflare-plugin',
     config(viteConfig) {
       const { deploy, unstable_phase } = platformObject.buildOptions || {};
       if (unstable_phase !== 'buildServerBundle' || deploy !== 'cloudflare') {
         return;
       }
-
-      // FIXME This seems too hacky (The use of viteConfig.root, '.', path.resolve and resolveFileName)
-      const entriesFile = normalizePath(
-        resolveFileName(
-          path.resolve(
-            viteConfig.root || '.',
-            opts.srcDir,
-            SRC_ENTRIES + '.jsx',
-          ),
-        ),
-      );
       const { input } = viteConfig.build?.rollupOptions ?? {};
       if (input && !(typeof input === 'string') && !(input instanceof Array)) {
-        input[DIST_SERVE_JS.replace(/\.js$/, '')] = srcServeFile;
+        input[SERVE_JS.replace(/\.js$/, '')] = `${opts.srcDir}/${SERVE_JS}`;
       }
-      viteConfig.define = {
-        ...viteConfig.define,
-        'import.meta.env.WAKU_ENTRIES_FILE': JSON.stringify(entriesFile),
-      };
     },
     configResolved(config) {
       rootDir = config.root;
+      entriesFile = `${rootDir}/${opts.srcDir}/${SRC_ENTRIES}`;
       const { deploy, unstable_phase } = platformObject.buildOptions || {};
       if (
         (unstable_phase !== 'buildServerBundle' &&
@@ -108,6 +104,16 @@ export function deployCloudflarePlugin(opts: {
       config.ssr.resolve.externalConditions ||= [];
       config.ssr.resolve.externalConditions.push('worker');
     },
+    resolveId(source) {
+      if (source === `${opts.srcDir}/${SERVE_JS}`) {
+        return source;
+      }
+    },
+    load(id) {
+      if (id === `${opts.srcDir}/${SERVE_JS}`) {
+        return getServeJsContent(entriesFile);
+      }
+    },
     closeBundle() {
       const { deploy, unstable_phase } = platformObject.buildOptions || {};
       if (unstable_phase !== 'buildDeploy' || deploy !== 'cloudflare') {
@@ -132,7 +138,7 @@ export function deployCloudflarePlugin(opts: {
         writeFileSync(
           workerEntrypoint,
           `
-import server from './${DIST_SERVE_JS}'
+import server from './${SERVE_JS}'
 
 export default {
   ...server