1 files changed, 124 insertions, 0 deletions
diff --git a/frontend/app/entry.server.tsx b/frontend/app/entry.server.tsx
new file mode 100644
index 0000000..77b6f15
--- /dev/null
+++ b/frontend/app/entry.server.tsx
@@ -0,0 +1,124 @@
+import { PassThrough } from "node:stream";
+
+import type { EntryContext } from "@remix-run/node";
+import { createReadableStreamFromReadable } from "@remix-run/node";
+import { RemixServer } from "@remix-run/react";
+import { isbot } from "isbot";
+import { renderToPipeableStream } from "react-dom/server";
+
+const ABORT_DELAY = 5_000;
+
+export default function handleRequest(
+  request: Request,
+  responseStatusCode: number,
+  responseHeaders: Headers,
+  remixContext: EntryContext,
+) {
+  return isbot(request.headers.get("user-agent") || "")
+    ? handleBotRequest(
+        request,
+        responseStatusCode,
+        responseHeaders,
+        remixContext,
+      )
+    : handleBrowserRequest(
+        request,
+        responseStatusCode,
+        responseHeaders,
+        remixContext,
+      );
+}
+
+function handleBotRequest(
+  request: Request,
+  responseStatusCode: number,
+  responseHeaders: Headers,
+  remixContext: EntryContext,
+) {
+  return new Promise((resolve, reject) => {
+    let shellRendered = false;
+    const { pipe, abort } = renderToPipeableStream(
+      <RemixServer
+        context={remixContext}
+        url={request.url}
+        abortDelay={ABORT_DELAY}
+      />,
+      {
+        onAllReady() {
+          shellRendered = true;
+          const body = new PassThrough();
+          const stream = createReadableStreamFromReadable(body);
+
+          responseHeaders.set("Content-Type", "text/html");
+
+          resolve(
+            new Response(stream, {
+              headers: responseHeaders,
+              status: responseStatusCode,
+            }),
+          );
+
+          pipe(body);
+        },
+        onShellError(error: unknown) {
+          reject(error);
+        },
+        onError(error: unknown) {
+          responseStatusCode = 500;
+          if (shellRendered) {
+            console.error(error);
+          }
+        },
+      },
+    );
+
+    setTimeout(abort, ABORT_DELAY);
+  });
+}
+
+function handleBrowserRequest(
+  request: Request,
+  responseStatusCode: number,
+  responseHeaders: Headers,
+  remixContext: EntryContext,
+) {
+  return new Promise((resolve, reject) => {
+    let shellRendered = false;
+    const { pipe, abort } = renderToPipeableStream(
+      <RemixServer
+        context={remixContext}
+        url={request.url}
+        abortDelay={ABORT_DELAY}
+      />,
+      {
+        onShellReady() {
+          shellRendered = true;
+          const body = new PassThrough();
+          const stream = createReadableStreamFromReadable(body);
+
+          responseHeaders.set("Content-Type", "text/html");
+
+          resolve(
+            new Response(stream, {
+              headers: responseHeaders,
+              status: responseStatusCode,
+            }),
+          );
+
+          pipe(body);
+        },
+        onShellError(error: unknown) {
+          reject(error);
+        },
+        onError(error: unknown) {
+          responseStatusCode = 500;
+          if (shellRendered) {
+            console.error(error);
+          }
+        },
+      },
+    );
+
+    setTimeout(abort, ABORT_DELAY);
+  });
+}