feat: add account self-service safeguards

backend/apps/accounts/api.py

@@ -1,7 +1,20 @@
-from django.contrib.auth import authenticate, get_user_model, login, logout
+from datetime import timedelta
+from ipaddress import ip_address
+
+from django.contrib.auth import (
+    authenticate,
+    get_user_model,
+    login,
+    logout,
+    update_session_auth_hash,
+)
 from django.contrib.auth.models import Group, Permission
+from django.contrib.auth.password_validation import validate_password
 from django.contrib.contenttypes.models import ContentType
+from django.core.exceptions import ValidationError
+from django.db.models import Q
 from django.middleware.csrf import get_token
+from django.utils import timezone
 from ninja import Router
 from ninja.errors import HttpError
 
@@ -14,9 +27,12 @@ from apps.accounts.schemas import (
     LoginIn,
     MenuOut,
     MenuUpdateIn,
+    PasswordChangeIn,
     PasswordResetIn,
     PermissionCodesIn,
     PermissionOut,
+    ProfileStatsOut,
+    ProfileUpdateIn,
     RoleCreateIn,
     RoleDetailOut,
     RoleUpdateIn,
@@ -26,6 +42,8 @@ from apps.accounts.schemas import (
     UserGroupUpdateIn,
     UserUpdateIn,
 )
+from apps.audit.models import OperationAuditLog
+from apps.tickets.models import Ticket, TicketEvent, TicketStatus
 
 router = Router(tags=["accounts"])
 
@@ -88,6 +106,8 @@ def serialize_current_user(user) -> dict:
         "username": user.username,
         "display_name": user.get_full_name() or user.username,
         "email": user.email,
+        "last_login": user.last_login,
+        "date_joined": user.date_joined,
         "is_superuser": user.is_superuser,
         "roles": [{"id": group.id, "name": group.name} for group in user.groups.all()],
         "user_groups": [
@@ -166,6 +186,38 @@ def require_permission(request, codename: str):
     raise HttpError(403, "Permission denied")
 
 
+def validate_user_password(password: str, user) -> None:
+    try:
+        validate_password(password, user=user)
+    except ValidationError as error:
+        raise HttpError(400, "；".join(error.messages)) from error
+
+
+def account_audit(request, action: str, target, snapshot: dict) -> None:
+    forwarded_for = request.META.get("HTTP_X_FORWARDED_FOR", "")
+    raw_ip_address = forwarded_for.split(",")[0].strip() or request.META.get("REMOTE_ADDR", "")
+    try:
+        audit_ip_address = str(ip_address(raw_ip_address))
+    except ValueError:
+        audit_ip_address = None
+    OperationAuditLog.objects.create(
+        user=request.user if getattr(request.user, "is_authenticated", False) else None,
+        module="accounts",
+        action=action,
+        target_type="user",
+        target_id=str(target.id),
+        request_snapshot=snapshot,
+        result="success",
+        ip_address=audit_ip_address,
+        user_agent=request.META.get("HTTP_USER_AGENT", ""),
+    )
+
+
+def protect_admin_target(actor, target) -> None:
+    if target.is_superuser and not actor.is_superuser:
+        raise HttpError(403, "只有超级管理员可以管理其他超级管理员账号")
+
+
 @router.get("/auth/csrf")
 def csrf(request):
     return {"csrfToken": get_token(request)}
@@ -192,6 +244,73 @@ def current_user(request):
     return serialize_current_user(user)
 
 
+@router.patch("/auth/me", response=CurrentUserOut)
+def update_current_user(request, payload: ProfileUpdateIn):
+    user = require_login(request)
+    values = payload.dict(exclude_unset=True)
+    update_fields = []
+    if "display_name" in values:
+        user.first_name = values["display_name"] or ""
+        update_fields.append("first_name")
+    if "email" in values:
+        user.email = values["email"] or ""
+        update_fields.append("email")
+    if update_fields:
+        user.save(update_fields=update_fields)
+        account_audit(request, "update_profile", user, {"fields": sorted(update_fields)})
+    return serialize_current_user(user)
+
+
+@router.post("/auth/change-password")
+def change_current_user_password(request, payload: PasswordChangeIn):
+    user = require_login(request)
+    if not user.check_password(payload.current_password):
+        raise HttpError(400, "当前密码不正确")
+    validate_user_password(payload.new_password, user)
+    user.set_password(payload.new_password)
+    user.save(update_fields=["password"])
+    update_session_auth_hash(request, user)
+    account_audit(request, "change_password", user, {"fields": ["password"]})
+    return {"status": "ok"}
+
+
+@router.get("/auth/me/stats", response=ProfileStatsOut)
+def current_user_stats(request):
+    user = require_login(request)
+    completed_statuses = [TicketStatus.RESOLVED, TicketStatus.CLOSED]
+    assigned = Ticket.objects.filter(assignee=user)
+    assigned_total = assigned.count()
+    completed_total = assigned.filter(status__in=completed_statuses).count()
+    completed_cutoff = timezone.now() - timedelta(days=30)
+    completed_30d = assigned.filter(status__in=completed_statuses).filter(
+        Q(resolved_at__gte=completed_cutoff) | Q(closed_at__gte=completed_cutoff)
+    ).count()
+    activity = (
+        TicketEvent.objects.select_related("ticket")
+        .filter(operator=user)
+        .order_by("-created_at")[:8]
+    )
+    return {
+        "created_total": Ticket.objects.filter(created_by=user).count(),
+        "active_assigned": assigned.exclude(status__in=completed_statuses).count(),
+        "completed_30d": completed_30d,
+        "completion_rate": round(completed_total * 100 / assigned_total, 1)
+        if assigned_total
+        else 0,
+        "recent_activity": [
+            {
+                "id": event.id,
+                "ticket_id": event.ticket_id,
+                "ticket_no": event.ticket.ticket_no,
+                "ticket_title": event.ticket.title,
+                "event_type": event.event_type,
+                "created_at": event.created_at,
+            }
+            for event in activity
+        ],
+    }
+
+
 @router.get("/users", response=list[BasicUserOut])
 def list_users(request):
     require_permission(request, "system.user.view")
@@ -201,6 +320,12 @@ def list_users(request):
 @router.post("/users", response=BasicUserOut)
 def create_user(request, payload: UserCreateIn):
     require_permission(request, "system.user.manage")
+    candidate = get_user_model()(
+        username=payload.username,
+        email=payload.email,
+        first_name=payload.display_name,
+    )
+    validate_user_password(payload.password, candidate)
     user = get_user_model().objects.create_user(
         username=payload.username,
         email=payload.email,
@@ -210,6 +335,12 @@ def create_user(request, payload: UserCreateIn):
     if payload.display_name:
         user.first_name = payload.display_name
         user.save(update_fields=["first_name"])
+    account_audit(
+        request,
+        "create_user",
+        user,
+        {"fields": ["username", "display_name", "email", "is_active"]},
+    )
     return serialize_basic_user(user)
 
 
@@ -221,8 +352,11 @@ def get_user(request, user_id: int):
 
 @router.patch("/users/{user_id}", response=BasicUserOut)
 def update_user(request, user_id: int, payload: UserUpdateIn):
-    require_permission(request, "system.user.manage")
+    actor = require_permission(request, "system.user.manage")
     user = get_user_model().objects.get(id=user_id)
+    protect_admin_target(actor, user)
+    if actor.id == user.id and payload.is_active is False:
+        raise HttpError(400, "不能停用当前登录账号")
     update_fields = []
     if payload.display_name is not None:
         user.first_name = payload.display_name
@@ -235,31 +369,41 @@ def update_user(request, user_id: int, payload: UserUpdateIn):
         update_fields.append("is_active")
     if update_fields:
         user.save(update_fields=update_fields)
+        account_audit(request, "update_user", user, {"fields": sorted(update_fields)})
     return serialize_basic_user(user)
 
 
 @router.post("/users/{user_id}/reset-password", response=BasicUserOut)
 def reset_user_password(request, user_id: int, payload: PasswordResetIn):
-    require_permission(request, "system.user.manage")
+    actor = require_permission(request, "system.user.manage")
     user = get_user_model().objects.get(id=user_id)
+    protect_admin_target(actor, user)
+    if actor.id == user.id:
+        raise HttpError(400, "请前往个人中心修改当前账号密码")
+    validate_user_password(payload.password, user)
     user.set_password(payload.password)
     user.save(update_fields=["password"])
+    account_audit(request, "reset_password", user, {"fields": ["password"]})
     return serialize_basic_user(user)
 
 
 @router.post("/users/{user_id}/roles", response=BasicUserOut)
 def set_user_roles(request, user_id: int, payload: IdsIn):
-    require_permission(request, "system.user.manage")
+    actor = require_permission(request, "system.user.manage")
     user = get_user_model().objects.get(id=user_id)
+    protect_admin_target(actor, user)
     user.groups.set(Group.objects.filter(id__in=payload.role_ids))
+    account_audit(request, "set_roles", user, {"role_count": len(payload.role_ids)})
     return serialize_basic_user(user)
 
 
 @router.post("/users/{user_id}/user-groups", response=BasicUserOut)
 def set_user_groups(request, user_id: int, payload: IdsIn):
-    require_permission(request, "system.user.manage")
+    actor = require_permission(request, "system.user.manage")
     user = get_user_model().objects.get(id=user_id)
+    protect_admin_target(actor, user)
     user.business_groups.set(UserGroup.objects.filter(id__in=payload.user_ids))
+    account_audit(request, "set_user_groups", user, {"user_group_count": len(payload.user_ids)})
     return serialize_basic_user(user)