refactor(core): align next() usage and add prod mode for ui proxy

packages/core/package.json

@@ -10,7 +10,8 @@
     "precommit": "lint-staged",
     "build": "rm -rf build/ && tsc",
     "lint": "eslint --format pretty --ext .ts src",
-    "dev": "rm -rf build/ && tsc-watch --preserveWatchOutput --onSuccess \"node ./build/index.js\""
+    "dev": "rm -rf build/ && tsc-watch --preserveWatchOutput --onSuccess \"node ./build/index.js\"",
+    "start": "NODE_ENV=production node build/index.js"
   },
   "dependencies": {
     "@logto/essentials": "^1.1.0-rc.2",
@@ -29,6 +30,7 @@
     "koa-mount": "^4.0.0",
     "koa-proxies": "^0.12.1",
     "koa-router": "^10.0.0",
+    "koa-static": "^5.0.0",
     "lodash.pick": "^4.4.0",
     "module-alias": "^2.2.2",
     "nanoid": "^3.1.23",
@@ -44,6 +46,7 @@
     "@types/koa-logger": "^3.1.1",
     "@types/koa-mount": "^4.0.0",
     "@types/koa-router": "^7.4.2",
+    "@types/koa-static": "^4.0.2",
     "@types/lodash.pick": "^4.4.6",
     "@types/node": "^16.3.1",
     "@types/oidc-provider": "^7.4.1",

packages/core/src/consts.ts

@@ -9,5 +9,7 @@ export const routes = Object.freeze({
   },
 });
 
+export const isProduction = getEnv('NODE_ENV') === 'production';
 export const port = Number(getEnv('PORT', '3001'));
 export const oidcIssuer = getEnv('OIDC_ISSUER', `http://localhost:${port}/oidc`);
+export const mountedApps = Object.freeze(['api', 'oidc']);

packages/core/src/include.d/koa-body.d.ts

@@ -1,12 +1,12 @@
 declare module 'koa-body' {
   import { IKoaBodyOptions } from 'node_modules/koa-body';
-  import { Middleware } from 'koa';
+  import { MiddlewareType } from 'koa';
 
   declare function koaBody<
     StateT = Record<string, unknown>,
     ContextT = Record<string, unknown>,
     ResponseBodyT = any
-  >(options?: IKoaBodyOptions): Middleware<StateT, ContextT, ResponseBodyT>;
+  >(options?: IKoaBodyOptions): MiddlewareType<StateT, ContextT, ResponseBodyT>;
 
   export = koaBody;
 }

packages/core/src/include.d/koa.d.ts

@@ -0,0 +1,13 @@
+import { DefaultState, DefaultContext, ParameterizedContext, Next } from 'koa';
+
+declare module 'koa' {
+  // Have to do this patch since `compose.Middleware` returns `any`.
+  export type KoaNext<T> = () => Promise<T>;
+  export type KoaMiddleware<T, R> = (context: T, next: KoaNext<R>) => Promise<void>;
+  export type MiddlewareType<
+    StateT = DefaultState,
+    ContextT = DefaultContext,
+    ResponseBodyT = any,
+    NextT = void
+  > = KoaMiddleware<ParameterizedContext<StateT, ContextT, ResponseBodyT>, NextT>;
+}

packages/core/src/init/apis.ts

@@ -3,21 +3,22 @@ import Router from 'koa-router';
 import { Provider } from 'oidc-provider';
 import signInRoutes from '@/routes/sign-in';
 import registerRoutes from '@/routes/register';
-import uiProxy from '@/proxies/ui';
 import swaggerRoutes from '@/routes/swagger';
+import mount from 'koa-mount';
 
 const createRouter = (provider: Provider): Router => {
-  const router = new Router({ prefix: '/api' });
+  const router = new Router();
 
-  router.use(signInRoutes(provider));
-  router.use(registerRoutes());
-  router.use(swaggerRoutes());
+  signInRoutes(router, provider);
+  registerRoutes(router);
+  swaggerRoutes(router);
 
   return router;
 };
 
-export default function initRouter(app: Koa, provider: Provider): Router {
+export default function initRouter(app: Koa, provider: Provider) {
   const router = createRouter(provider);
-  app.use(router.routes()).use(uiProxy()).use(router.allowedMethods());
-  return router;
+  const apisApp = new Koa().use(router.routes()).use(router.allowedMethods());
+
+  app.use(mount('/api', apisApp));
 }

packages/core/src/init/app.ts

@@ -3,8 +3,9 @@ import koaLogger from 'koa-logger';
 
 import koaErrorHandler from '@/middleware/koa-error-handler';
 import { port } from '@/consts';
+import koaUIProxy from '@/middleware/koa-ui-proxy';
 import initOidc from './oidc';
-import initRouter from './router';
+import initRouter from './apis';
 
 export default async function initApp(app: Koa): Promise<void> {
   app.use(koaErrorHandler());
@@ -13,6 +14,8 @@ export default async function initApp(app: Koa): Promise<void> {
   const provider = await initOidc(app);
   initRouter(app, provider);
 
+  app.use(koaUIProxy());
+
   app.listen(port, () => {
     console.log(`App is listening on port ${port}`);
   });

packages/core/src/middleware/koa-guard.ts

@@ -1,6 +1,6 @@
 import RequestError from '@/errors/RequestError';
 import { has } from '@logto/essentials';
-import { Middleware } from 'koa';
+import { MiddlewareType } from 'koa';
 import koaBody from 'koa-body';
 import { IMiddleware, IRouterParamContext } from 'koa-router';
 import { ZodType } from 'zod';
@@ -51,12 +51,12 @@ export default function koaGuard<
   query,
   body,
   params,
-}: GuardConfig<GuardQueryT, GuardBodyT, GuardParametersT>): Middleware<
+}: GuardConfig<GuardQueryT, GuardBodyT, GuardParametersT>): MiddlewareType<
   StateT,
   WithGuarded<ContextT, GuardQueryT, GuardBodyT, GuardParametersT>,
   ResponseBodyT
 > {
-  const guard: Middleware<
+  const guard: MiddlewareType<
     StateT,
     WithGuarded<ContextT, GuardQueryT, GuardBodyT, GuardParametersT>,
     ResponseBodyT
@@ -72,24 +72,21 @@ export default function koaGuard<
       throw new RequestError('guard.invalid_input', error);
     }
 
-    await next();
+    return next();
   };
 
   const guardMiddleware: WithGuardConfig<
-    Middleware<
+    MiddlewareType<
       StateT,
       WithGuarded<ContextT, GuardQueryT, GuardBodyT, GuardParametersT>,
       ResponseBodyT
     >
   > = async function (ctx, next) {
     if (body) {
-      await koaBody<StateT, ContextT>()(ctx, async () => {
-        await guard(ctx, next);
-      });
-      return;
+      return koaBody<StateT, ContextT>()(ctx, async () => guard(ctx, next));
     }
 
-    await guard(ctx, next);
+    return guard(ctx, next);
   };
 
   guardMiddleware.config = { query, body, params };

packages/core/src/middleware/koa-ui-proxy.ts

@@ -0,0 +1,41 @@
+import fs from 'fs';
+import { Middleware } from 'koa';
+import proxy from 'koa-proxies';
+import serveStatic from 'koa-static';
+import { IRouterParamContext } from 'koa-router';
+import { isProduction, mountedApps } from '@/consts';
+
+const PATH_TO_UI_DIST = '../ui/build/public';
+const uiDistFiles = fs.readdirSync(PATH_TO_UI_DIST);
+
+export default function koaUIProxy<
+  StateT,
+  ContextT extends IRouterParamContext,
+  ResponseBodyT
+>(): Middleware<StateT, ContextT, ResponseBodyT> {
+  const developmentProxy = proxy('*', {
+    target: 'http://localhost:5000',
+    changeOrigin: true,
+    logs: true,
+  });
+  const staticProxy = serveStatic(PATH_TO_UI_DIST);
+
+  return async (context, next) => {
+    // Route has been handled by one of mounted apps
+    if (mountedApps.some((app) => context.request.path.startsWith(`/${app}`))) {
+      return next();
+    }
+
+    if (!isProduction) {
+      await developmentProxy(context, next);
+      return next();
+    }
+
+    if (!uiDistFiles.some((file) => context.request.path.startsWith(`/${file}`))) {
+      context.request.path = '/';
+    }
+
+    await staticProxy(context, next);
+    return next();
+  };
+}

packages/core/src/proxies/ui.ts

@@ -1,10 +0,0 @@
-import proxy from 'koa-proxies';
-
-// CAUTION: this is for testing only
-export default function uiProxy() {
-  return proxy(/^\/(?!api|oidc).*$/, {
-    target: 'http://localhost:5000',
-    changeOrigin: true,
-    logs: true,
-  });
-}

packages/core/src/routes/register.ts

@@ -22,9 +22,7 @@ const generateUserId = async (maxRetries = 500) => {
   throw new Error('Cannot generate user ID in reasonable retries');
 };
 
-export default function registerRoutes() {
-  const router = new Router();
-
+export default function registerRoutes(router: Router) {
   router.post(
     '/register',
     koaGuard({
@@ -33,7 +31,7 @@ export default function registerRoutes() {
         password: string().min(6),
       }),
     }),
-    async (ctx) => {
+    async (ctx, next) => {
       const { username, password } = ctx.guard.body;
 
       if (await hasUser(username)) {
@@ -59,8 +57,7 @@ export default function registerRoutes() {
       });
 
       ctx.body = { id };
+      return next();
     }
   );
-
-  return router.routes();
 }

packages/core/src/routes/sign-in.ts

@@ -9,13 +9,11 @@ import koaGuard from '@/middleware/koa-guard';
 import RequestError from '@/errors/RequestError';
 import { LogtoErrorCode } from '@logto/phrases';
 
-export default function signInRoutes(provider: Provider) {
-  const router = new Router();
-
+export default function signInRoutes(router: Router, provider: Provider) {
   router.post(
     '/sign-in',
     koaGuard({ body: object({ username: string().optional(), password: string().optional() }) }),
-    async (ctx) => {
+    async (ctx, next) => {
       const {
         prompt: { name },
       } = await provider.interactionDetails(ctx.req, ctx.res);
@@ -60,10 +58,12 @@ export default function signInRoutes(provider: Provider) {
       } else {
         throw new Error(`Prompt not supported: ${name}`);
       }
+
+      return next();
     }
   );
 
-  router.post('/sign-in/consent', async (ctx) => {
+  router.post('/sign-in/consent', async (ctx, next) => {
     const { session, grantId, params, prompt } = await provider.interactionDetails(
       ctx.req,
       ctx.res
@@ -95,16 +95,17 @@ export default function signInRoutes(provider: Provider) {
       { mergeWithLastSubmission: true }
     );
     ctx.body = { redirectTo };
+
+    return next();
   });
 
-  router.post('/sign-in/abort', async (ctx) => {
+  router.post('/sign-in/abort', async (ctx, next) => {
     await provider.interactionDetails(ctx.req, ctx.res);
     const error: LogtoErrorCode = 'oidc.aborted';
     const redirectTo = await provider.interactionResult(ctx.req, ctx.res, {
       error,
     });
     ctx.body = { redirectTo };
+    return next();
   });
-
-  return router.routes();
 }

packages/core/src/routes/swagger.ts

@@ -4,10 +4,8 @@ import { isGuardMiddleware, WithGuardConfig } from '@/middleware/koa-guard';
 import { toTitle } from '@/utils/string';
 import { zodTypeToSwagger } from '@/utils/zod';
 
-export default function swaggerRoutes() {
-  const router = new Router();
-
-  router.get('/swagger.json', async (ctx) => {
+export default function swaggerRoutes(router: Router) {
+  router.get('/swagger.json', async (ctx, next) => {
     const routes = ctx.router.stack.map(({ path, stack, methods }) => {
       const guard = stack.find((function_): function_ is WithGuardConfig<IMiddleware> =>
         isGuardMiddleware(function_)
@@ -17,16 +15,15 @@ export default function swaggerRoutes() {
 
     const paths = Object.fromEntries(
       routes.map<[string, OpenAPIV3.PathItemObject]>(({ path, methods, guard }) => {
-        const trimmedPath = path.slice(4);
         const body = guard?.config.body;
 
         return [
-          trimmedPath,
+          `/api${path}`,
           Object.fromEntries(
             methods.map<[string, OpenAPIV3.OperationObject]>((method) => [
               method.toLowerCase(),
               {
-                tags: [toTitle(trimmedPath.split('/')[1] ?? 'General')],
+                tags: [toTitle(path.split('/')[1] ?? 'General')],
                 requestBody: body && {
                   required: true,
                   content: {
@@ -57,7 +54,7 @@ export default function swaggerRoutes() {
     };
 
     ctx.body = document;
-  });
 
-  return router.routes();
+    return next();
+  });
 }

pnpm-lock.yaml

@@ -27,6 +27,7 @@ importers:
       '@types/koa-logger': ^3.1.1
       '@types/koa-mount': ^4.0.0
       '@types/koa-router': ^7.4.2
+      '@types/koa-static': ^4.0.2
       '@types/lodash.pick': ^4.4.6
       '@types/node': ^16.3.1
       '@types/oidc-provider': ^7.4.1
@@ -45,6 +46,7 @@ importers:
       koa-mount: ^4.0.0
       koa-proxies: ^0.12.1
       koa-router: ^10.0.0
+      koa-static: ^5.0.0
       lint-staged: ^11.1.1
       lodash.pick: ^4.4.0
       module-alias: ^2.2.2
@@ -74,6 +76,7 @@ importers:
       koa-mount: 4.0.0
       koa-proxies: 0.12.1_koa@2.13.1
       koa-router: 10.0.0
+      koa-static: 5.0.0
       lodash.pick: 4.4.0
       module-alias: 2.2.2
       nanoid: 3.1.23
@@ -88,6 +91,7 @@ importers:
       '@types/koa-logger': 3.1.1
       '@types/koa-mount': 4.0.0
       '@types/koa-router': 7.4.4
+      '@types/koa-static': 4.0.2
       '@types/lodash.pick': 4.4.6
       '@types/node': 16.4.6
       '@types/oidc-provider': 7.4.2
@@ -3142,6 +3146,19 @@ packages:
       '@types/koa': 2.13.4
     dev: true
 
+  /@types/koa-send/4.1.3:
+    resolution: {integrity: sha512-daaTqPZlgjIJycSTNjKpHYuKhXYP30atFc1pBcy6HHqB9+vcymDgYTguPdx9tO4HMOqNyz6bz/zqpxt5eLR+VA==}
+    dependencies:
+      '@types/koa': 2.13.4
+    dev: true
+
+  /@types/koa-static/4.0.2:
+    resolution: {integrity: sha512-ns/zHg+K6XVPMuohjpOlpkR1WLa4VJ9czgUP9bxkCDn0JZBtUWbD/wKDZzPGDclkQK1bpAEScufCHOy8cbfL0w==}
+    dependencies:
+      '@types/koa': 2.13.4
+      '@types/koa-send': 4.1.3
+    dev: true
+
   /@types/koa/2.13.4:
     resolution: {integrity: sha512-dfHYMfU+z/vKtQB7NUrthdAEiSvnLebvBjwHtfFmpZmB7em2N3WVQdHgnFq+xvyVgxW5jKDmjWfLD3lw4g4uTw==}
     dependencies:
@@ -5832,7 +5849,6 @@ packages:
     resolution: {integrity: sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==}
     dependencies:
       ms: 2.1.3
-    dev: true
 
   /debug/4.3.2:
     resolution: {integrity: sha512-mOp8wKcvj7XxC78zLgw/ZA+6TSgkoE2C/ienthhRD298T7UNwAg9diBpLRxC0mOezLl4B0xV7M0cCO6P/O0Xhw==}
@@ -8029,7 +8045,6 @@ packages:
       inherits: 2.0.3
       setprototypeof: 1.1.0
       statuses: 1.5.0
-    dev: true
 
   /http-errors/1.7.2:
     resolution: {integrity: sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==}
@@ -8325,7 +8340,6 @@ packages:
 
   /inherits/2.0.3:
     resolution: {integrity: sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=}
-    dev: true
 
   /inherits/2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
@@ -9664,6 +9678,27 @@ packages:
       - supports-color
     dev: false
 
+  /koa-send/5.0.1:
+    resolution: {integrity: sha512-tmcyQ/wXXuxpDxyNXv5yNNkdAMdFRqwtegBXUaowiQzUKqJehttS0x2j0eOZDQAyloAth5w6wwBImnFzkUz3pQ==}
+    engines: {node: '>= 8'}
+    dependencies:
+      debug: 4.3.2
+      http-errors: 1.8.0
+      resolve-path: 1.4.0
+    transitivePeerDependencies:
+      - supports-color
+    dev: false
+
+  /koa-static/5.0.0:
+    resolution: {integrity: sha512-UqyYyH5YEXaJrf9S8E23GoJFQZXkBVJ9zYYMPGz919MSX1KuvAcycIuS0ci150HCoPf4XQVhQ84Qf8xRPWxFaQ==}
+    engines: {node: '>= 7.6.0'}
+    dependencies:
+      debug: 3.2.7
+      koa-send: 5.0.1
+    transitivePeerDependencies:
+      - supports-color
+    dev: false
+
   /koa/2.13.1:
     resolution: {integrity: sha512-Lb2Dloc72auj5vK4X4qqL7B5jyDPQaZucc9sR/71byg7ryoD1NCaCm63CShk9ID9quQvDEi1bGR/iGjCG7As3w==}
     engines: {node: ^4.8.4 || ^6.10.1 || ^7.10.1 || >= 8.1.4}
@@ -10556,7 +10591,6 @@ packages:
 
   /ms/2.1.3:
     resolution: {integrity: sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==}
-    dev: true
 
   /multi-fork/0.0.2:
     resolution: {integrity: sha1-gFiuxGFBJMftqhWBm4juiJ0+tOA=}
@@ -11514,7 +11548,6 @@ packages:
   /path-is-absolute/1.0.1:
     resolution: {integrity: sha1-F0uSaHNVNP+8es5r9TpanhtcX18=}
     engines: {node: '>=0.10.0'}
-    dev: true
 
   /path-is-inside/1.0.2:
     resolution: {integrity: sha1-NlQX3t5EQw0cEa9hAn+s8HS9/FM=}
@@ -13206,6 +13239,14 @@ packages:
       global-dirs: 0.1.1
     dev: true
 
+  /resolve-path/1.4.0:
+    resolution: {integrity: sha1-xL2p9e+y/OZSR4c6s2u02DT+Fvc=}
+    engines: {node: '>= 0.8'}
+    dependencies:
+      http-errors: 1.6.3
+      path-is-absolute: 1.0.1
+    dev: false
+
   /resolve-pathname/3.0.0:
     resolution: {integrity: sha512-C7rARubxI8bXFNB/hqcp/4iUeIXJhJZvFPFPiSPRnhU5UPxzMFIl+2E6yY6c4k9giDJAhtV+enfA+G89N6Csng==}
     dev: false
@@ -13632,7 +13673,6 @@ packages:
 
   /setprototypeof/1.1.0:
     resolution: {integrity: sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==}
-    dev: true
 
   /setprototypeof/1.1.1:
     resolution: {integrity: sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==}