fix: bug

app/main.py

@@ -4,6 +4,7 @@ import logging
 import math
 import re
 import secrets
+import socket
 import time
 import uuid
 from pathlib import Path
@@ -175,18 +176,31 @@ def _platform_model_cfg() -> dict:
 
 def _select_model_cfg(user_id: int, prefer_vip: bool = True) -> tuple[dict | None, str]:
     vip = users.get_vip_status(user_id)
+    now = int(time.time())
+    active_user_model = users.get_active_ai_model(user_id)
+    has_user_model = bool(
+        active_user_model
+        and (active_user_model.get("api_key") or "").strip()
+        and (active_user_model.get("model") or "").strip()
+    )
+    purchased_cycle_active = bool(int(vip.get("cycle_started_at") or 0) > 0 and int(vip.get("cycle_expires_at") or 0) > now)
     if prefer_vip and vip.get("vip_enabled"):
-        if int(vip.get("total_available_credits") or 0) <= 0:
+        total_available = int(vip.get("total_available_credits") or 0)
+        if total_available < _min_platform_credits_required():
             return None, "vip_empty"
-        cfg = _platform_model_cfg()
-        if cfg.get("api_key"):
-            return cfg, "vip"
-    cfg = users.get_active_ai_model(user_id)
+        # 已购买订阅：优先平台模型
+        # 未购买订阅：若未配置自有模型，则默认走平台模型（可使用赠送额度）
+        if purchased_cycle_active or not has_user_model:
+            cfg = _platform_model_cfg()
+            if cfg.get("api_key"):
+                return cfg, "vip"
+    cfg = active_user_model
     return cfg, "user"
 
 
 def _quota_detail() -> str:
-    return "Credits 额度已用完（席位额度+共享加油包），请充值或等待下个计费周期"
+    min_required = _min_platform_credits_required()
+    return f"Credits 额度不足，平台模型至少需要 {min_required} Credits（1张图片或10000Token门槛），请订阅或充值"
 
 
 def _credits_from_cny(amount_cny: float) -> int:
@@ -222,6 +236,13 @@ def _estimate_image_cost(image_count: int) -> int:
     return _credits_from_cny((cnt / pkg_images) * pkg_cny)
 
 
+def _min_platform_credits_required() -> int:
+    one_image_credits = _estimate_image_cost(1)
+    token_10k_cny = (10_000.0 / 1_000_000.0) * max(0.0, float(settings.credits_token_price_per_million_cny))
+    token_10k_credits = _credits_from_cny(token_10k_cny)
+    return max(1, one_image_credits, token_10k_credits)
+
+
 def _new_order_no() -> str:
     return f"RC{time.strftime('%Y%m%d%H%M%S')}{uuid.uuid4().hex[:10].upper()}"
 
@@ -743,6 +764,31 @@ async def pay_address_suggest(request: Request):
         return {"ok": True, "detail": "IP地址解析失败，已填入IP信息，可手动修改", "ip": ip, "address": f"IP:{ip}"}
 
 
+@app.get("/api/tools/server-ip")
+async def tools_server_ip(request: Request):
+    user = _require_user(request)
+    if not user:
+        return {"ok": False, "detail": "请先登录"}
+    public_ip = ""
+    try:
+        async with httpx.AsyncClient(timeout=5) as client:
+            resp = await client.get("https://api64.ipify.org?format=json")
+        body = resp.json() if resp.content else {}
+        if resp.status_code < 400 and isinstance(body, dict):
+            public_ip = str(body.get("ip") or "").strip()
+    except Exception:
+        public_ip = ""
+    private_ip = ""
+    try:
+        private_ip = socket.gethostbyname(socket.gethostname())
+    except Exception:
+        private_ip = ""
+    ip = public_ip or private_ip
+    if not ip:
+        return {"ok": False, "detail": "无法识别服务器IP，请稍后重试"}
+    return {"ok": True, "ip": ip, "public_ip": public_ip, "private_ip": private_ip}
+
+
 @app.post("/api/billing/recharge/notify")
 async def billing_recharge_notify(req: BillingRechargeNotifyRequest, request: Request):
     token = (request.headers.get("X-Shop-Token") or "").strip()
@@ -967,7 +1013,7 @@ async def rewrite(req: RewriteRequest, request: Request):
     billed_basis = "usage_tokens" if total_tokens > 0 else "char_estimate"
     token_cost = _estimate_rewrite_cost(req, result)
     vip_status = users.get_vip_status(user["id"])
-    should_consume = bool(vip_status.get("vip_enabled"))
+    should_consume = model_source == "vip"
     if should_consume:
         ok_cost, balance = users.consume_tokens(
             user["id"],