# app/main.py
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
import os
import time

from app.config import get_settings
from app.database import engine, Base
from app.routers import auth, home_modules, nav_menus, settings as settings_router, upload, images, crawl, wechat_crawl, batch_wechat_crawl, contact_qrcodes, app_downloads, home_experts, home_partners, columns, articles, seo, prerender

settings = get_settings()

# Create database tables
Base.metadata.create_all(bind=engine)

app = FastAPI(
    title=settings.APP_NAME,
    description="飞点健康官网 CMS 系统 API",
    version="1.0.0"
)

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

# Static files for uploads
# Use the actual uploads directory where crawl.py saves images
# Resolve relative to backend root to match config.UPLOAD_DIR
backend_root = os.path.dirname(os.path.dirname(__file__))
upload_dir = os.path.join(backend_root, settings.UPLOAD_DIR)
os.makedirs(upload_dir, exist_ok=True)
app.mount("/uploads", StaticFiles(directory=upload_dir), name="uploads")

# New unified storage structure
storage_admin_dir = os.path.join(backend_root, "..", "storage", "admin")
storage_public_dir = os.path.join(backend_root, "..", "storage", "public")
storage_tmp_dir = os.path.join(backend_root, "..", "storage", "tmp")
os.makedirs(storage_admin_dir, exist_ok=True)
os.makedirs(storage_public_dir, exist_ok=True)
os.makedirs(storage_tmp_dir, exist_ok=True)
app.mount("/storage/admin", StaticFiles(directory=storage_admin_dir), name="storage_admin")
app.mount("/storage/public", StaticFiles(directory=storage_public_dir), name="storage_public")
app.mount("/storage/tmp", StaticFiles(directory=storage_tmp_dir), name="storage_tmp")


def cleanup_old_temp_files():
    """启动时清理超过24小时的采集临时文件"""
    try:
        if os.name == 'nt':  # Windows
            temp_dir = os.path.join(backend_root, "..", "storage", "tmp", "crawl")
        else:
            temp_dir = "/tmp/news_crawl"

        if not os.path.exists(temp_dir):
            return

        now = time.time()
        max_age = 24 * 3600  # 24小时
        count = 0

        for root, dirs, files in os.walk(temp_dir):
            for f in files:
                filepath = os.path.join(root, f)
                try:
                    if now - os.path.getmtime(filepath) > max_age:
                        os.remove(filepath)
                        count += 1
                except OSError:
                    pass

        if count > 0:
            print(f"[cleanup] 已清理 {count} 个过期临时文件")
    except Exception as e:
        print(f"[cleanup] 清理临时文件失败: {e}")


# 启动时执行清理
cleanup_old_temp_files()

# Routers
# SEO 路由（无 /api 前缀，直接暴露于根域名）
app.include_router(seo.router)
app.include_router(prerender.router)

app.include_router(auth.router, prefix="/api/auth", tags=["认证"])
app.include_router(home_modules.router, prefix="/api", tags=["首页模块"])
app.include_router(nav_menus.router, prefix="/api", tags=["导航菜单"])
app.include_router(settings_router.router, prefix="/api", tags=["系统设置"])
app.include_router(upload.router, prefix="/api", tags=["文件上传"])
app.include_router(images.router, prefix="/api", tags=["图片管理"])
app.include_router(crawl.router, prefix="/api", tags=["文章采集"])
app.include_router(wechat_crawl.router, prefix="/api", tags=["公众号采集"])
app.include_router(batch_wechat_crawl.router, prefix="/api", tags=["批量公众号采集"])
app.include_router(contact_qrcodes.router, prefix="/api", tags=["咨询二维码"])
app.include_router(app_downloads.router, prefix="/api", tags=["下载应用"])
app.include_router(home_experts.router, prefix="/api", tags=["专家团队"])
app.include_router(home_partners.router, prefix="/api", tags=["合作伙伴"])
app.include_router(columns.router, prefix="/api", tags=["栏目管理"])
app.include_router(articles.router, prefix="/api", tags=["内容管理"])


@app.get("/")
def root():
    return {
        "message": f"Welcome to {settings.APP_NAME}",
        "docs": "/docs",
        "version": "1.0.0"
    }


@app.get("/health")
def health_check():
    return {"status": "ok"}