from contextlib import asynccontextmanager
from pathlib import Path
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse
from packages.core.logger import app_logger

# 我们将之前写好的 trade 接口引入
from apps.api.routers import trade, entity, export, subscription, bi, health

# 获取项目根目录
BASE_DIR = Path(__file__).resolve().parent.parent.parent
STATIC_DIR = BASE_DIR / "apps" / "api" / "static"

@asynccontextmanager
async def lifespan(app: FastAPI):
    # 启动时初始化
    app_logger.info("Initializing API Service...")
    yield
    # 关闭时
    app_logger.info("Closing API Service...")

app = FastAPI(
    title="Customs Data API",
    description="海关数据查询服务 API",
    version="1.0.0",
    lifespan=lifespan
)

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

# 挂载静态文件
app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")

@app.get("/", tags=["UI"])
async def serve_ui():
    return FileResponse(str(STATIC_DIR / "index.html"))

@app.get("/api/v1/health", tags=["System"])
async def health_check():
    return {"status": "ok", "service": "Customs Data API"}

app.include_router(health.router, prefix="/api/v1/health", tags=["Health"])
app.include_router(trade.router, prefix="/api/v1/trade", tags=["Trade Search"])
app.include_router(entity.router, prefix="/api/v1/entity", tags=["Entity Search"])
app.include_router(export.router, prefix="/api/v1/export", tags=["Export"])
app.include_router(subscription.router, prefix="/api/v1/subscription", tags=["Subscription"])
app.include_router(bi.router, prefix="/api/v1/bi", tags=["BI Dashboard"])