from __future__ import annotations

import logging
from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.api.routes import register_routes
from app.core.config import get_settings
from app.db.store import Store
from app.services.scheduler import start_scheduler, stop_scheduler, sync_all_campaigns

logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    settings = get_settings()

    # Run DB migrations
    store = Store(settings.db_path)
    store.run_migrations()

    # Boot scheduler and register all active campaigns
    if settings.scheduler_enabled:
        sched = start_scheduler()
        app.state.scheduler = sched
        campaigns = store.list_campaigns(active_only=True)
        sync_all_campaigns(campaigns)
        logger.info("Magpie started — %d campaign(s) scheduled", len(campaigns))
    else:
        app.state.scheduler = None
        logger.info("Magpie started — scheduler disabled")

    store.close()
    yield

    # Graceful shutdown
    stop_scheduler()


def create_app() -> FastAPI:
    settings = get_settings()
    app = FastAPI(
        title="Magpie",
        description="CircuitForge cross-product social media management",
        version="0.1.0",
        lifespan=lifespan,
    )
    app.add_middleware(
        CORSMiddleware,
        allow_origins=["http://localhost:8531", "http://0.0.0.0:8531"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )
    register_routes(app)
    return app


app = create_app()


if __name__ == "__main__":
    import uvicorn
    settings = get_settings()
    uvicorn.run("app.main:app", host=settings.api_host, port=settings.api_port, reload=settings.debug)