"""gcp_solution_architecture_agent: Starlette application wiring & CLI entrypoint."""

from contextlib import asynccontextmanager
import logging
import click
import uvicorn
from starlette.applications import Starlette
from starlette.routing import Route

from app.config import get_settings
from app.database import get_db_manager
from app.workflows.routes import (
    get_card,
    get_session_route,
    health_check,
    run_workflow,
    validate_artifacts_route,
)

settings = get_settings()

logging.basicConfig(
    level=getattr(logging, settings.LOG_LEVEL.upper(), logging.INFO),
    format="%(asctime)s %(name)s %(levelname)s %(message)s",
)
logger = logging.getLogger(__name__)

routes = [
    Route("/health", health_check, methods=["GET"]),
    Route("/card", get_card, methods=["GET"]),
    Route("/generate", run_workflow, methods=["POST"]),
    Route("/validate", validate_artifacts_route, methods=["POST"]),
    Route("/sessions/{session_id}", get_session_route, methods=["GET"]),
]

@asynccontextmanager
async def lifespan(app: Starlette):
    """Initialize PostgreSQL database schema on server startup."""
    logger.info("Initializing PostgreSQL database persistence...")
    get_db_manager()
    yield

app = Starlette(
    debug=True,
    routes=routes,
    lifespan=lifespan,
)


@click.command()
@click.option("--host", default=settings.HOST, help="Host address to bind")
@click.option("--port", default=settings.PORT, type=int, help="Port to listen on")
def main(host: str, port: int) -> None:
    """Start the GCP Solution Architecture Agent Starlette REST server."""
    logger.info("Starting GCP Solution Architecture Agent on %s:%d", host, port)
    uvicorn.run(app, host=host, port=port, log_level=settings.LOG_LEVEL.lower())


if __name__ == "__main__":
    main()