Fix/netlify edge redirects (#3342)

* fix: create redirects file for netlify edge adapter

* chore: changeset

* chore: distinguish between edge/regular

3 files changed, 35 insertions, 21 deletions

diff --git a/packages/integrations/netlify/src/integration-edge-functions.ts b/packages/integrations/netlify/src/integration-edge-functions.ts
index 08835bd26..0f28aeab5 100644
--- a/packages/integrations/netlify/src/integration-edge-functions.ts
+++ b/packages/integrations/netlify/src/integration-edge-functions.ts
@@ -1,4 +1,5 @@
 import type { AstroAdapter, AstroIntegration, AstroConfig, RouteData } from 'astro';
+import { createRedirects } from './shared.js';
 import * as fs from 'fs';
 
 export function getAdapter(): AstroAdapter {
@@ -97,6 +98,7 @@ export function netlifyEdgeFunctions({ dist }: NetlifyEdgeFunctionsOptions = {})
 			},
 			'astro:build:done': async ({ routes, dir }) => {
 				await createEdgeManifest(routes, entryFile, _config.root);
+				await createRedirects(routes, dir, entryFile, true);
 			},
 		},
 	};
diff --git a/packages/integrations/netlify/src/integration-functions.ts b/packages/integrations/netlify/src/integration-functions.ts
index 2720eb591..81cb7e9fd 100644
--- a/packages/integrations/netlify/src/integration-functions.ts
+++ b/packages/integrations/netlify/src/integration-functions.ts
@@ -1,5 +1,5 @@
 import type { AstroAdapter, AstroIntegration, AstroConfig } from 'astro';
-import fs from 'fs';
+import { createRedirects } from './shared.js';
 
 export function getAdapter(): AstroAdapter {
 	return {
@@ -37,26 +37,7 @@ function netlifyFunctions({ dist }: NetlifyFunctionsOptions = {}): AstroIntegrat
 				buildConfig.server = new URL('./functions/', _config.outDir);
 			},
 			'astro:build:done': async ({ routes, dir }) => {
-				const _redirectsURL = new URL('./_redirects', dir);
-
-				// Create the redirects file that is used for routing.
-				let _redirects = '';
-				for (const route of routes) {
-					if (route.pathname) {
-						_redirects += `
-${route.pathname}    /.netlify/functions/${entryFile}    200`;
-					} else {
-						const pattern =
-							'/' + route.segments.map(([part]) => (part.dynamic ? '*' : part.content)).join('/');
-						_redirects += `
-${pattern}    /.netlify/functions/${entryFile}    200`;
-					}
-				}
-
-				// Always use appendFile() because the redirects file could already exist,
-				// e.g. due to a `/public/_redirects` file that got copied to the output dir.
-				// If the file does not exist yet, appendFile() automatically creates it.
-				await fs.promises.appendFile(_redirectsURL, _redirects, 'utf-8');
+				await createRedirects(routes, dir, entryFile, false);			
 			},
 		},
 	};
diff --git a/packages/integrations/netlify/src/shared.ts b/packages/integrations/netlify/src/shared.ts
new file mode 100644
index 000000000..3df667f4d
--- /dev/null
+++ b/packages/integrations/netlify/src/shared.ts
@@ -0,0 +1,31 @@
+import type { RouteData } from 'astro';
+import fs from 'fs';
+
+export async function createRedirects(
+  routes: RouteData[], 
+  dir: URL, 
+  entryFile: string,
+  edge: boolean
+  ) {
+  const _redirectsURL = new URL('./_redirects', dir);
+  const kind = edge ? 'edge-functions' : 'functions'
+
+  // Create the redirects file that is used for routing.
+  let _redirects = '';
+  for (const route of routes) {
+    if (route.pathname) {
+      _redirects += `
+  ${route.pathname}    /.netlify/${kind}/${entryFile}    200`;
+    } else {
+      const pattern =
+        '/' + route.segments.map(([part]) => (part.dynamic ? '*' : part.content)).join('/');
+      _redirects += `
+  ${pattern}    /.netlify/${kind}/${entryFile}    200`;
+    }
+  }
+
+  // Always use appendFile() because the redirects file could already exist,
+  // e.g. due to a `/public/_redirects` file that got copied to the output dir.
+  // If the file does not exist yet, appendFile() automatically creates it.
+  await fs.promises.appendFile(_redirectsURL, _redirects, 'utf-8');
+}
\ No newline at end of file