feat: reroute for SSR

packages/astro/src/core/app/index.ts

@@ -1,13 +1,6 @@
-import type {
-	ComponentInstance,
-	ManifestData,
-	RouteData,
-	SSRManifest,
-} from '../../@types/astro.js';
+import type { ManifestData, RouteData, SSRManifest } from '../../@types/astro.js';
 import { normalizeTheLocale } from '../../i18n/index.js';
-import type { SinglePageBuiltModule } from '../build/types.js';
 import {
-	DEFAULT_404_COMPONENT,
 	REROUTABLE_STATUS_CODES,
 	REROUTE_DIRECTIVE_HEADER,
 	clientAddressSymbol,
@@ -26,7 +19,6 @@ import {
 	prependForwardSlash,
 	removeTrailingForwardSlash,
 } from '../path.js';
-import { RedirectSinglePageBuiltModule } from '../redirects/index.js';
 import { RenderContext } from '../render-context.js';
 import { createAssetLink } from '../render/ssr-element.js';
 import { ensure404Route } from '../routing/astro-designed-error-pages.js';
@@ -96,7 +88,7 @@ export class App {
 			routes: manifest.routes.map((route) => route.routeData),
 		});
 		this.#baseWithoutTrailingSlash = removeTrailingForwardSlash(this.#manifest.base);
-		this.#pipeline = this.#createPipeline(streaming);
+		this.#pipeline = this.#createPipeline(this.#manifestData, streaming);
 		this.#adapterLogger = new AstroIntegrationLogger(
 			this.#logger.options,
 			this.#manifest.adapterName
@@ -110,18 +102,19 @@ export class App {
 	/**
 	 * Creates a pipeline by reading the stored manifest
 	 *
+	 * @param manifestData
 	 * @param streaming
 	 * @private
 	 */
-	#createPipeline(streaming = false) {
+	#createPipeline(manifestData: ManifestData, streaming = false) {
 		if (this.#manifest.checkOrigin) {
 			this.#manifest.middleware = sequence(
 				createOriginCheckMiddleware(),
 				this.#manifest.middleware
 			);
 		}
 
-		return AppPipeline.create({
+		return AppPipeline.create(manifestData, {
 			logger: this.#logger,
 			manifest: this.#manifest,
 			mode: 'production',
@@ -309,7 +302,7 @@ export class App {
 		}
 		const pathname = this.#getPathnameFromRequest(request);
 		const defaultStatus = this.#getDefaultStatusCode(routeData, pathname);
-		const mod = await this.#getModuleForRoute(routeData);
+		const mod = await this.#pipeline.getModuleForRoute(routeData);
 
 		let response;
 		try {
@@ -405,7 +398,7 @@ export class App {
 
 				return this.#mergeResponses(response, originalResponse, override);
 			}
-			const mod = await this.#getModuleForRoute(errorRouteData);
+			const mod = await this.#pipeline.getModuleForRoute(errorRouteData);
 			try {
 				const renderContext = RenderContext.create({
 					locals,
@@ -493,35 +486,4 @@ export class App {
 		if (route.endsWith('/500')) return 500;
 		return 200;
 	}
-
-	async #getModuleForRoute(route: RouteData): Promise<SinglePageBuiltModule> {
-		if (route.component === DEFAULT_404_COMPONENT) {
-			return {
-				page: async () =>
-					({ default: () => new Response(null, { status: 404 }) }) as ComponentInstance,
-				renderers: [],
-			};
-		}
-		if (route.type === 'redirect') {
-			return RedirectSinglePageBuiltModule;
-		} else {
-			if (this.#manifest.pageMap) {
-				const importComponentInstance = this.#manifest.pageMap.get(route.component);
-				if (!importComponentInstance) {
-					throw new Error(
-						`Unexpectedly unable to find a component instance for route ${route.route}`
-					);
-				}
-				const pageModule = await importComponentInstance();
-				return pageModule;
-			} else if (this.#manifest.pageModule) {
-				const importComponentInstance = this.#manifest.pageModule;
-				return importComponentInstance;
-			} else {
-				throw new Error(
-					"Astro couldn't find the correct page to render, probably because it wasn't correctly mapped for SSR usage. This is an internal error, please file an issue."
-				);
-			}
-		}
-	}
 }

packages/astro/src/core/app/pipeline.ts

@@ -1,27 +1,46 @@
 import type {
-	ComponentInstance,
-	ReroutePayload,
+	ManifestData,
 	RouteData,
 	SSRElement,
 	SSRResult,
+	ComponentInstance,
+	ReroutePayload,
 } from '../../@types/astro.js';
 import { Pipeline } from '../base-pipeline.js';
+import { DEFAULT_404_COMPONENT } from '../constants.js';
+import { RedirectSinglePageBuiltModule } from '../redirects/component.js';
 import { createModuleScriptElement, createStylesheetElementSet } from '../render/ssr-element.js';
+import type { SinglePageBuiltModule } from '../build/types.js';
 
 export class AppPipeline extends Pipeline {
-	static create({
-		logger,
-		manifest,
-		mode,
-		renderers,
-		resolve,
-		serverLike,
-		streaming,
-	}: Pick<
-		AppPipeline,
-		'logger' | 'manifest' | 'mode' | 'renderers' | 'resolve' | 'serverLike' | 'streaming'
-	>) {
-		return new AppPipeline(logger, manifest, mode, renderers, resolve, serverLike, streaming);
+	#manifestData: ManifestData | undefined;
+
+	static create(
+		manifestData: ManifestData,
+		{
+			logger,
+			manifest,
+			mode,
+			renderers,
+			resolve,
+			serverLike,
+			streaming,
+		}: Pick<
+			AppPipeline,
+			'logger' | 'manifest' | 'mode' | 'renderers' | 'resolve' | 'serverLike' | 'streaming'
+		>
+	) {
+		const pipeline = new AppPipeline(
+			logger,
+			manifest,
+			mode,
+			renderers,
+			resolve,
+			serverLike,
+			streaming
+		);
+		pipeline.#manifestData = manifestData;
+		return pipeline;
 	}
 
 	headElements(routeData: RouteData): Pick<SSRResult, 'scripts' | 'styles' | 'links'> {
@@ -47,11 +66,69 @@ export class AppPipeline extends Pipeline {
 	}
 
 	componentMetadata() {}
-	getComponentByRoute(_routeData: RouteData): Promise<ComponentInstance> {
-		throw new Error('unimplemented');
+	async getComponentByRoute(routeData: RouteData): Promise<ComponentInstance> {
+		const module = await this.getModuleForRoute(routeData);
+		return module.page();
 	}
 
-	tryReroute(_reroutePayload: ReroutePayload): Promise<[RouteData, ComponentInstance]> {
-		throw new Error('unimplemented');
+	async tryReroute(payload: ReroutePayload): Promise<[RouteData, ComponentInstance]> {
+		let foundRoute;
+
+		for (const route of this.#manifestData!.routes) {
+			if (payload instanceof URL) {
+				if (route.pattern.test(payload.pathname)) {
+					foundRoute = route;
+					break;
+				}
+			} else if (payload instanceof Request) {
+				const url = new URL(payload.url);
+				if (route.pattern.test(url.pathname)) {
+					foundRoute = route;
+					break;
+				}
+			} else {
+				if (route.pattern.test(decodeURI(payload))) {
+					foundRoute = route;
+					break;
+				}
+			}
+		}
+
+		if (foundRoute) {
+			const componentInstance = await this.getComponentByRoute(foundRoute);
+			return [foundRoute, componentInstance];
+		} else {
+			// TODO: handle error properly
+			throw new Error('Route not found');
+		}
+	}
+
+	async getModuleForRoute(route: RouteData): Promise<SinglePageBuiltModule> {
+		if (route.component === DEFAULT_404_COMPONENT) {
+			return {
+				page: async () =>
+					({ default: () => new Response(null, { status: 404 }) }) as ComponentInstance,
+				renderers: [],
+			};
+		}
+		if (route.type === 'redirect') {
+			return RedirectSinglePageBuiltModule;
+		} else {
+			if (this.manifest.pageMap) {
+				const importComponentInstance = this.manifest.pageMap.get(route.component);
+				if (!importComponentInstance) {
+					throw new Error(
+						`Unexpectedly unable to find a component instance for route ${route.route}`
+					);
+				}
+				return await importComponentInstance();
+			} else if (this.manifest.pageModule) {
+				return this.manifest.pageModule;
+			} else {
+				throw new Error(
+					"Astro couldn't find the correct page to render, probably because it wasn't correctly mapped for SSR usage. This is an internal error, please file an issue."
+				);
+			}
+		}
 	}
 }

packages/astro/src/core/render-context.ts

@@ -408,7 +408,6 @@ export class RenderContext {
 			}
 		};
 
-
 		return {
 			generator: astroStaticPartial.generator,
 			glob: astroStaticPartial.glob,

packages/astro/test/reroute.test.js

@@ -2,6 +2,7 @@ import { describe, it, before, after } from 'node:test';
 import { loadFixture } from './test-utils.js';
 import { load as cheerioLoad } from 'cheerio';
 import assert from 'node:assert/strict';
+import testAdapter from './test-adapter.js';
 
 describe('Dev reroute', () => {
 	/** @type {import('./test-utils').Fixture} */
@@ -102,3 +103,65 @@ describe('Build reroute', () => {
 		assert.equal($('h1').text(), 'Index');
 	});
 });
+
+describe('SSR reroute', () => {
+	/** @type {import('./test-utils').Fixture} */
+	let fixture;
+	let app;
+
+	before(async () => {
+		fixture = await loadFixture({
+			root: './fixtures/reroute/',
+			output: 'server',
+			adapter: testAdapter(),
+		});
+		await fixture.build();
+		app = await fixture.loadTestAdapterApp();
+	});
+
+	it('the render the index page when navigating /reroute ', async () => {
+		const request = new Request('http://example.com/reroute');
+		const response = await app.render(request);
+		const html = await response.text();
+		const $ = cheerioLoad(html);
+
+		assert.equal($('h1').text(), 'Index');
+	});
+
+	it('the render the index page when navigating /blog/hello ', async () => {
+		const request = new Request('http://example.com/blog/hello');
+		const response = await app.render(request);
+		const html = await response.text();
+		const $ = cheerioLoad(html);
+
+		assert.equal($('h1').text(), 'Index');
+	});
+
+	it('the render the index page when navigating /blog/salut ', async () => {
+		const request = new Request('http://example.com/blog/salut');
+		const response = await app.render(request);
+		const html = await response.text();
+
+		const $ = cheerioLoad(html);
+
+		assert.equal($('h1').text(), 'Index');
+	});
+
+	it('the render the index page when navigating dynamic route /dynamic/[id] ', async () => {
+		const request = new Request('http://example.com/dynamic/hello');
+		const response = await app.render(request);
+		const html = await response.text();
+		const $ = cheerioLoad(html);
+
+		assert.equal($('h1').text(), 'Index');
+	});
+
+	it('the render the index page when navigating spread route /spread/[...spread] ', async () => {
+		const request = new Request('http://example.com/spread/hello');
+		const response = await app.render(request);
+		const html = await response.text();
+		const $ = cheerioLoad(html);
+
+		assert.equal($('h1').text(), 'Index');
+	});
+});