5e400a6834
- Add broadcast_loop sending position ticks at 10Hz to all clients - Replace echo stub with play/pause/seek/load command dispatch to MPVEngine - Start broadcast_loop as asyncio task in lifespan, cancel on shutdown - Use get_engine callable to avoid circular import at module level
69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
import asyncio
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import os
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from contextlib import asynccontextmanager
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from pathlib import Path
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from fastapi import FastAPI, Request
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from fastapi.responses import FileResponse
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from fastapi.staticfiles import StaticFiles
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from lightsync.devices.registry import DeviceRegistry
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from lightsync.store.show_store import ShowStore
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from lightsync.audio.engine import MPVEngine
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# Module-level containers populated in lifespan
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registry: DeviceRegistry | None = None
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show_store: ShowStore | None = None
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engine: MPVEngine | None = None
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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global registry, show_store, engine
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# Startup
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registry = DeviceRegistry(Path("devices.json"))
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await registry.load()
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show_store = ShowStore(Path("shows"))
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show_store.ensure_dir()
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ao = os.environ.get("MPV_AO", "null")
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engine = MPVEngine(ao=ao)
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engine.start()
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app.state.engine = engine
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from lightsync.api.ws import broadcast_loop
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task = asyncio.create_task(broadcast_loop(lambda: engine))
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yield
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# Shutdown
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task.cancel()
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try:
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await task
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except asyncio.CancelledError:
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pass
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engine.stop()
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await registry.save()
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def create_app() -> FastAPI:
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app = FastAPI(title="LightSync", lifespan=lifespan, redirect_slashes=False)
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# API routes (registered before static mount — see Pattern 7)
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from lightsync.api import shows, devices, ws
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app.include_router(shows.router, prefix="/api/shows")
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app.include_router(devices.router, prefix="/api/devices")
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app.include_router(ws.router)
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# Static file serving — no-cache headers to prevent stale JS/CSS
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frontend_dir = Path(__file__).parent / "frontend"
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@app.get("/{filename:path}")
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async def static_files(request: Request, filename: str):
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path = frontend_dir / (filename or "index.html")
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if not path.exists() or not path.is_file():
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path = frontend_dir / "index.html"
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response = FileResponse(path)
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response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
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return response
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return app
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app = create_app()
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