from pathlib import Path

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

from app.api.v1.api import api_router
from app.core.config import settings


def create_app() -> FastAPI:
    """
    Create and configure the FastAPI application
    """
    app = FastAPI(
        title=settings.PROJECT_NAME,
        description=settings.PROJECT_DESCRIPTION,
        version=settings.PROJECT_VERSION,
        openapi_url="/openapi.json",
        docs_url="/docs",
        redoc_url="/redoc",
    )

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

    # Include API router
    app.include_router(api_router)

    # Ensure DB directory exists
    db_dir = Path(settings.DB_DIR)
    db_dir.mkdir(parents=True, exist_ok=True)

    return app