feat: public plugin for static assets (#36)

Author: do4ng

packages/dobs/src/_types.ts

@@ -6,4 +6,4 @@ export type LooseObject<KnownKeys extends string, ValueType> = Partial<
 export type LooseKey<K extends string> = K | (string & {});
 
 export type Promisable<T> = T | Promise<T>;
-export type Maybe<T> = T | null | undefined;
+export type Maybe<T> = T | null | undefined | void;

packages/dobs/src/experimental/index.ts

@@ -1 +1,2 @@
 export * from './cache';
+export * from './public';

packages/dobs/src/experimental/public.ts

@@ -0,0 +1,35 @@
+import { statSync } from 'node:fs';
+import { join } from 'node:path';
+import { Plugin } from '~/dobs/plugin';
+
+function _dynamic(prefix: string, directory: string): Plugin {
+  return {
+    name: 'dobs/experimental/public-plugin:dynamic',
+    server(server) {
+      server.use((req, res, next) => {
+        if (!req.pathname.startsWith(prefix)) {
+          return next();
+        }
+
+        const filePath = join(directory, req.pathname.slice(prefix.length));
+
+        try {
+          const stat = statSync(filePath);
+
+          if (!stat.isDirectory()) {
+            return res.sendFile(filePath);
+          }
+
+          // eslint-disable-next-line @typescript-eslint/no-unused-vars
+        } catch (e) {
+          // res.status(404).send('File not found');
+        }
+
+        next();
+      });
+    },
+  };
+}
+export function publicPlugin(prefix: string, directory: string): Plugin {
+  return _dynamic(prefix, directory);
+}

packages/dobs/src/plugin.ts

@@ -1,4 +1,5 @@
 import type { BuildOptions } from 'rolldown';
+import type { BaseServer } from '@dobsjs/http';
 
 import type { ResolvedServerConfig, ServerConfig } from './config';
 import type { Promisable, Maybe } from './_types';
@@ -19,6 +20,8 @@ export interface Plugin {
    */
   resolveBuildOptions?(buildOptions: BuildOptions): Maybe<BuildOptions>;
 
+  server?(server: BaseServer): Promisable<Maybe<BaseServer>>;
+
   generateRoute?(route: Routes): Promisable<Maybe<Routes>>;
 }
 

packages/dobs/src/server/index.ts

@@ -22,6 +22,9 @@ export async function createDobsServer<T extends ServerConfig>(
   const resolvedConfig = resolveConfig(config);
   const server = httpServer(resolvedConfig.createServer);
 
+  // [plugin] execute plugin.server
+  await runner.execute('server', server);
+
   // user middleware
   server.middlewares.push(...resolvedConfig.middlewares);
   // router middleware