open-gsio/packages/server/api-router.ts

import { Router, withParams } from "itty-router";
import { createRequestContext } from "./RequestContext.ts";

export function createRouter() {
  return (
    Router()

      .get("/assets/*", (r, e, c) => {
        const { assetService } = createRequestContext(e, c);
        return assetService.handleStaticAssets(r, e, c);
      })

      .post("/api/contact", (r, e, c) => {
        const { contactService } = createRequestContext(e, c);
        return contactService.handleContact(r);
      })

      .post("/api/chat", (r, e, c) => {
        const { chatService } = createRequestContext(e, c);
        return chatService.handleChatRequest(r);
      })

      .get(
        "/api/streams/:streamId",
        withParams,
        async ({ streamId }, env, ctx) => {
          const { chatService } = createRequestContext(env, ctx);
          return chatService.handleSseStream(streamId); // Handles SSE for streamId
        },
      )

    .get("/api/models",
        async (req, env, ctx) => {
            const { chatService } = createRequestContext(env, ctx);
            return chatService.getSupportedModels();
        },
    )

      .post("/api/feedback", async (r, e, c) => {
        const { feedbackService } = createRequestContext(e, c);
        return feedbackService.handleFeedback(r);
      })

      .post("/api/tx", async (r, e, c) => {
        const { transactionService } = createRequestContext(e, c);
        return transactionService.handleTransact(r);
      })

      // used for file handling, can be enabled but is not fully implemented in this fork.
      // .post('/api/documents', async (r, e, c) => {
      //     const {documentService} = createServerContext(e, c);
      //     return documentService.handlePutDocument(r)
      // })
      //
      // .get('/api/documents', async (r, e, c) => {
      //     const {documentService} = createServerContext(e, c);
      //     return documentService.handleGetDocument(r)
      // })

      .all("/api/metrics/*", async (r, e, c) => {
        const { metricsService } = createRequestContext(e, c);
        return metricsService.handleMetricsRequest(r);
      })

      // renders the app
      .get('*', async (r, e, c) => {
          const { assetService } = createRequestContext(e, c);

          console.log('Request received:', { url: r.url, headers: r.headers });

          // First attempt to serve pre-rendered HTML
          const preRenderedHtml = await assetService.handleStaticAssets(r, e);
          if (preRenderedHtml !== null) {
              console.log('Serving pre-rendered HTML for:', r.url);
              // console.log({preRenderedHtml});
              return preRenderedHtml;
          }

          // If no pre-rendered HTML, attempt SSR
          console.log('No pre-rendered HTML found, attempting SSR for:', r.url);
          const ssrResponse = await assetService.handleSsr(r.url, r.headers, e);
          if (ssrResponse !== null) {
              console.log('SSR successful for:', r.url);
              return ssrResponse;
          }

          // Finally, proxy to static assets if nothing else matched
          console.log('Falling back to static assets for:', r.url);
          return assetService.handleStaticAssets(r, e);
      })
  );
}