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"""
Hub web application — serves the MeshBay SPA and static assets.

The SPA (Preact + htm) handles:
  - Authentication (login, register, token refresh)
  - Group discovery and browsing
  - WebRTC connection to nodes for P2P file transfer
  - Dark/light theme with system preference detection

Static files are served from meshbay_hub/static/ via Starlette StaticFiles.
The root route (/) returns the SPA HTML shell.
"""

from pathlib import Path

from fastapi import APIRouter
from fastapi.responses import HTMLResponse

STATIC_DIR = Path(__file__).parent.parent / "static"

router = APIRouter(tags=["webapp"])


@router.get("/app", response_class=HTMLResponse)
async def app_root():
    return HTMLResponse(_HTML)


@router.get("/app/{path:path}", response_class=HTMLResponse)
async def app_catchall(path: str):
    return HTMLResponse(_HTML)


@router.get("/", response_class=HTMLResponse)
async def index():
    return HTMLResponse(_HTML)


_HTML = """\
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>MeshBay</title>
  <link rel="stylesheet" href="/style.css">
</head>
<body>
  <div id="app"></div>
  <script src="/keyderive.js"></script>
  <script src="/crypto.js"></script>
  <script src="/transport.js"></script>
  <script type="module" src="/app.js"></script>
</body>
</html>
"""