重构中，配置存入数据库，第一次智能生成随机后台地址，登录密码

core/utils.py

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+import datetime
+import random
+import asyncio
+from sqlalchemy import or_, select, delete
+from sqlalchemy.ext.asyncio.session import AsyncSession
+from .database import Codes, engine
+from .depends import IPRateLimit
+from .storage import STORAGE_ENGINE
+from settings import settings
+
+storage = STORAGE_ENGINE[settings.STORAGE_ENGINE]()
+
+# 错误IP限制器
+error_ip_limit = IPRateLimit(settings.ERROR_COUNT, settings.ERROR_MINUTE)
+# 上传文件限制器
+upload_ip_limit = IPRateLimit(settings.UPLOAD_COUNT, settings.UPLOAD_MINUTE)
+
+
+async def delete_expire_files():
+    while True:
+        async with AsyncSession(engine, expire_on_commit=False) as s:
+            await error_ip_limit.remove_expired_ip()
+            await upload_ip_limit.remove_expired_ip()
+            query = select(Codes).where(or_(Codes.exp_time < datetime.datetime.now(), Codes.count == 0))
+            exps = (await s.execute(query)).scalars().all()
+            files = []
+            exps_ids = []
+            for exp in exps:
+                if exp.type != "text":
+                    files.append(exp.text)
+                exps_ids.append(exp.id)
+            await storage.delete_files(files)
+            query = delete(Codes).where(Codes.id.in_(exps_ids))
+            await s.execute(query)
+            await s.commit()
+        await asyncio.sleep(settings.DELETE_EXPIRE_FILES_INTERVAL * 60)
+
+
+async def get_code(s: AsyncSession):
+    code = random.randint(10000, 99999)
+    while (await s.execute(select(Codes.id).where(Codes.code == code))).scalar():
+        code = random.randint(10000, 99999)
+    return str(code)