"""AI Worker Platform - FastAPI Application Entry Point."""
import os
from contextlib import asynccontextmanager
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from app.config import settings
from app.database import init_db
from app.api.v1 import api_router
from app.core.exceptions import AppException


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Initialize database on startup."""
    init_db()
    # Seed default tenant if not exists
    from app.database import SessionLocal
    from app.models.tenant import Tenant
    db = SessionLocal()
    try:
        existing = db.query(Tenant).filter(Tenant.slug == "default").first()
        if not existing:
            tenant = Tenant(name="Default Tenant", slug="default")
            db.add(tenant)
            db.commit()
            print("[Startup] Created default tenant")
    finally:
        db.close()
    print(f"[Startup] {settings.APP_NAME} v{settings.APP_VERSION} ready")
    yield


app = FastAPI(
    title=settings.APP_NAME,
    version=settings.APP_VERSION,
    description="AI Worker Project Management Platform - MVP",
    lifespan=lifespan,
)

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.cors_origins_list,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


# Exception handler
@app.exception_handler(AppException)
async def app_exception_handler(request: Request, exc: AppException):
    return JSONResponse(
        status_code=exc.status_code,
        content={"detail": exc.detail},
    )


# Health check
@app.get("/health")
def health():
    return {"status": "ok", "version": settings.APP_VERSION}


# API routes
app.include_router(api_router)