feat: Sprint 1 foundation - FastAPI scaffold, DB schema, auth, seed data, mock WhatsApp, Docker

app/main.py

@@ -0,0 +1,55 @@
+"""Denya OneCare — FastAPI application entry point."""
+
+from __future__ import annotations
+
+import logging
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from sqlalchemy import text
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.config import settings
+from app.core.database import Base, async_session_factory, engine
+from app.routers import auth, health, whatsapp
+from app.services.seed import seed_units, seed_users
+
+logger = logging.getLogger(__name__)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Initialise database and seed data on startup."""
+    logger.info("Starting Denya OneCare …")
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)
+    async with async_session_factory() as session:
+        await seed_users(session)
+        await session.commit()
+        await seed_units(session, json_path=str(settings.BASE_DIR / "apartment_mapping.json"))
+        await session.commit()
+    yield
+    await engine.dispose()
+    logger.info("Denya OneCare stopped.")
+
+
+app = FastAPI(
+    title=settings.APP_NAME,
+    version="0.1.0",
+    lifespan=lifespan,
+)
+
+# ── CORS ─────────────────────────────────────────────────────────────
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.CORS_ORIGINS.split(",") if settings.CORS_ORIGINS != "*" else ["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# ── Routers ──────────────────────────────────────────────────────────
+app.include_router(health.router)
+app.include_router(auth.router)
+app.include_router(whatsapp.router)