Add server-rendered HTML5 shell with SSE

services/api-server/src/api_server/main.py

@@ -31,10 +31,11 @@ from collaboration import (
 )
 from fastapi import FastAPI, HTTPException, Request
 from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import PlainTextResponse, Response
+from fastapi.responses import PlainTextResponse, Response, StreamingResponse
 from neo4j import AsyncGraphDatabase
 from pydantic import BaseModel, Field
 
+from api_server.html5 import render_html5_editor, render_html5_index, render_html5_status
 from impact_engine import object_impact, routine_impact
 from incremental_indexer import rebuild_changed_file
 from integration_topology import IntegrationKind, build_integration_topology
@@ -1567,6 +1568,56 @@ async def api_health() -> dict[str, str]:
     return {"status": "ok"}
 
 
+@app.get("/html5")
+async def html5_index() -> Response:
+    return Response(
+        render_html5_index(_project_summaries()),
+        media_type="text/html; charset=utf-8",
+    )
+
+
+@app.get("/html5/projects/{project_id}/editor")
+async def html5_project_editor(project_id: str, q: str = "") -> Response:
+    try:
+        snapshot = _project_snapshot_or_404(project_id)
+        html = render_html5_editor(
+            project_id=project_id,
+            projects=_project_summaries(),
+            snapshot=snapshot,
+            q=q,
+        )
+    except HTTPException as error:
+        html = render_html5_editor(
+            project_id=project_id,
+            projects=_project_summaries(),
+            snapshot=None,
+            error=str(error.detail),
+            q=q,
+        )
+    return Response(html, media_type="text/html; charset=utf-8")
+
+
+@app.get("/html5/projects/{project_id}/events")
+async def html5_project_events(project_id: str, once: bool = False) -> StreamingResponse:
+    def stream_status():
+        while True:
+            try:
+                snapshot = _project_snapshot_or_404(project_id)
+                fragment = render_html5_status(project_id, snapshot)
+            except HTTPException as error:
+                fragment = f'<span>project: {project_id}</span><span>error: {error.detail}</span>'
+            yield f"event: status\ndata: {fragment}\n\n"
+            if once:
+                break
+            time.sleep(5)
+
+    return StreamingResponse(
+        stream_status(),
+        media_type="text/event-stream",
+        headers={"Cache-Control": "no-cache", "X-Accel-Buffering": "no"},
+    )
+
+
 @app.get("/version")
 async def version() -> dict[str, str]:
     return {"name": "sfera", "version": "0.1.0"}