Merge branch 'subdomain-routing-and-site-context'

src/server/site-context-server.ts

@@ -0,0 +1,101 @@
+// ───────────────────────────────────────────────────────────────────────
+// Server-side site-context extraction.
+//
+// Reads the request `Host` header from a SolidStart FetchEvent (APIEvent /
+// PageEvent) or a raw vinxi/nitro H3Event and resolves the active `Site`
+// via the shared pure resolver in `~/lib/site-context`.
+//
+// Importing this module is only valid server-side. It relies on
+// `event.request` and `event.nativeEvent.node.req` which do not exist in
+// the browser.
+// ───────────────────────────────────────────────────────────────────────
+
+import type { APIEvent } from "@solidjs/start/server";
+import type { H3Event } from "vinxi/http";
+import {
+  resolveSiteFromHost,
+  type Site,
+  MAIN_SITE
+} from "~/lib/site-context";
+
+/**
+ * Structural shape accepted by {@link getSiteFromEvent}. Compatible with
+ * SolidStart `APIEvent` / `PageEvent` and vinxi/nitro `H3Event`. We keep it
+ * structural (rather than a union of those named types) so the SSR document
+ * handler can pass its `PageEvent` without a TS widening error.
+ */
+export interface ServerSiteEvent {
+  request?: Request;
+  nativeEvent?: unknown;
+  node?: unknown;
+}
+
+/**
+ * Best-effort extraction of the `Host` header from any request-shaped event.
+ *
+ * SolidStart's FetchEvent exposes `event.request.headers`; nitro/H3 exposes
+ * the raw Node request via `event.nativeEvent.node.req.headers`. We try
+ * both so this works for API route handlers (`APIEvent`), the SSR document
+ * handler (`PageEvent`), and tRPC procedures operating on the underlying
+ * `H3Event`.
+ */
+function hostFromEventLike(event: ServerSiteEvent | unknown): string | null {
+  // 1) Web FetchEvent / APIEvent / PageEvent → standard `Request` headers.
+  try {
+    const req = (event as { request?: Request } | null)?.request;
+    const h = req?.headers?.get?.("host");
+    if (h) return h;
+  } catch {
+    /* noop */
+  }
+
+  // 2) vinxi/nitro H3Event → raw Node request.
+  try {
+    const nodeReq = (
+      event as {
+        nativeEvent?: { node?: { req?: { headers?: Record<string, string | string[]> } } };
+      } | null
+    )?.nativeEvent?.node?.req;
+    const raw = nodeReq?.headers?.host;
+    if (typeof raw === "string" && raw) return raw;
+  } catch {
+    /* noop */
+  }
+
+  // 3) Some H3 shapes expose `event.node.req` directly.
+  try {
+    const nodeReq = (
+      event as {
+        node?: { req?: { headers?: Record<string, string | string[]> } };
+      } | null
+    )?.node?.req;
+    const raw = nodeReq?.headers?.host;
+    if (typeof raw === "string" && raw) return raw;
+  } catch {
+    /* noop */
+  }
+
+  return null;
+}
+
+/**
+ * Resolve the active `Site` from a SolidStart APIEvent / PageEvent or a
+ * vinxi/nitro H3Event. Accepts the structural {@link ServerSiteEvent} shape,
+ * so the SSR document handler can pass its `PageEvent` directly. Falls back
+ * to `main` if no host can be determined.
+ */
+export function getSiteFromEvent(
+  event: APIEvent | H3Event | ServerSiteEvent
+): Site {
+  return resolveSiteFromHost(hostFromEventLike(event));
+}
+
+/**
+ * Resolve the active `Site` from a standard `Request` (e.g. inside server
+ * functions that receive a `Request` directly). Falls back to `main`.
+ */
+export function getSiteFromRequest(request: Request): Site {
+  return resolveSiteFromHost(request.headers.get("host"));
+}
+
+export { MAIN_SITE };