# app/main.py (或你当前这个文件名)

from fastapi import FastAPI
from fastapi.exceptions import RequestValidationError
from fastapi.staticfiles import StaticFiles            # ✅ 新增：静态文件
from starlette.exceptions import HTTPException
from starlette.middleware.cors import CORSMiddleware

from app.api.errors.http_error import http_error_handler
from app.api.errors.validation_error import http422_error_handler
from app.api.routes.api import router as api_router
from app.core.config import get_app_settings
from app.core.events import create_start_app_handler, create_stop_app_handler


def get_application() -> FastAPI:
    settings = get_app_settings()

    settings.configure_logging()

    application = FastAPI(**settings.fastapi_kwargs)

    application.add_middleware(
        CORSMiddleware,
        allow_origins=["*"],
        allow_origin_regex=".*",
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
        expose_headers=["*"],
    )

    application.add_event_handler(
        "startup",
        create_start_app_handler(application, settings),
    )
    application.add_event_handler(
        "shutdown",
        create_stop_app_handler(application),
    )

    application.add_exception_handler(HTTPException, http_error_handler)
    application.add_exception_handler(RequestValidationError, http422_error_handler)

    # 所有业务 API 挂在 /api 前缀下（上传接口也在这里：/api/upload-image）
    application.include_router(api_router, prefix=settings.api_prefix)

    # ✅ 静态资源：让 /static/... 可直接访问（封面、正文图片等）
    application.mount(
        "/static",
        StaticFiles(directory="static"),
        name="static",
    )

    return application


app = get_application()