改用element

增加acme多配置

backend/database.py

@@ -24,4 +24,35 @@ async def get_db():
 
 async def init_db():
     async with engine.begin() as conn:
+        # 迁移旧表：acme_config → acme_configs
+        try:
+            result = await conn.execute(
+                __import__("sqlalchemy").text("SELECT name FROM sqlite_master WHERE type='table' AND name='acme_config'")
+            )
+            if result.fetchone():
+                await conn.execute(__import__("sqlalchemy").text("ALTER TABLE acme_config RENAME TO acme_configs"))
+        except Exception:
+            pass
+
         await conn.run_sync(Base.metadata.create_all)
+
+        # 迁移：给 domains 表加 acme_config_id 列
+        try:
+            await conn.execute(
+                __import__("sqlalchemy").text("ALTER TABLE domains ADD COLUMN acme_config_id INTEGER REFERENCES acme_configs(id)")
+            )
+        except Exception:
+            pass  # 列已存在
+
+        # 确保至少有一条默认配置
+        result = await conn.execute(
+            __import__("sqlalchemy").text("SELECT COUNT(*) FROM acme_configs")
+        )
+        count = result.scalar()
+        if count == 0:
+            await conn.execute(
+                __import__("sqlalchemy").text(
+                    "INSERT INTO acme_configs (name, acme_server, email, dns_provider, dns_credentials, renew_days) "
+                    "VALUES ('默认配置', 'https://acme-v02.api.letsencrypt.org/directory', '', 'aliyun', '{}', 30)"
+                )
+            )