First upload.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

server/db.py

@@ -5,6 +5,20 @@ from datetime import datetime
 from pathlib import Path
 
 DB_PATH = Path(__file__).parent / "database.json"
+SETTINGS_PATH = Path(__file__).parent / "settings.json"
+
+def get_settings():
+    if SETTINGS_PATH.exists():
+        try:
+            with open(SETTINGS_PATH, "r", encoding="utf-8") as f:
+                return json.load(f)
+        except Exception:
+            pass
+    return {"smtp_enabled": False, "smtp_server": "", "smtp_port": 465, "smtp_user": "", "smtp_pass": ""}
+
+def save_settings(settings: dict):
+    with open(SETTINGS_PATH, "w", encoding="utf-8") as f:
+        json.dump(settings, f, indent=2)
 
 def load_db():
     if DB_PATH.exists():
@@ -25,24 +39,53 @@ def get_user_by_username(username: str):
             return u
     return None
 
+def update_user_login(user_id: int):
+    users = load_db()
+    for u in users:
+        if u.get("id") == user_id:
+            u["last_login"] = datetime.now().isoformat()
+            save_db(users)
+            return u
+    return None
+
+def get_all_users():
+    users = load_db()
+    # 移除敏感的历史记录数据以便返回概览
+    result = []
+    for u in users:
+        u_copy = {k: v for k, v in u.items() if k != "history"}
+        result.append(u_copy)
+    return result
+
 def get_user_by_id(user_id: int):
     for u in load_db():
         if u.get("id") == user_id:
             return u
     return None
 
-def create_user(user_data: dict):
+def create_user(user_data: dict, ip_address: str = "Unknown"):
     users = load_db()
     new_user = {
         **user_data,
         "id": int(time.time() * 1000),
         "createdAt": datetime.now().isoformat(),
+        "register_ip": ip_address,
+        "last_login": datetime.now().isoformat(),
         "history": []
     }
     users.append(new_user)
     save_db(users)
     return new_user
 
+def update_user(user_id: int, updates: dict):
+    users = load_db()
+    for u in users:
+        if u.get("id") == user_id:
+            u.update(updates)
+            save_db(users)
+            return u
+    return None
+
 def add_history_record(user_id: int, markdown_text: str):
     users = load_db()
     for u in users: