feat(priority): group priority changed notifications by target group and fetch remote account details

backend/app/services/website_sync.py

@@ -239,16 +239,34 @@ def build_rate_priority_map(db: Session, upstream_ids: set[int]) -> dict[str, in
     return {key: rate_to_priority[rate] for key, rate in group_rates.items()}
 
 
-def _priority_result(row, new_priority: int | None, status: str, message: str) -> dict:
-    """构建统一的优先级同步结果 dict。"""
+def _priority_result(
+    row,
+    new_priority: int | None,
+    status: str,
+    message: str,
+    account_name: str | None = None,
+    old_priority: Any = None,
+    source_rate: float | None = None,
+) -> dict:
+    """构建统一的优先级同步结果 dict，支持丰富的展示和后向兼容性。"""
+    tg_id = row.imported_target_group_id or row.group_id
+    tg_name = row.imported_target_group_name or tg_id
     return {
+        # 兼容旧字段
         "account_id": row.imported_account_id,
         "group_id": row.group_id,
         "upstream_id": row.upstream_id,
-        "old_priority": None,
+        "old_priority": old_priority,
         "new_priority": new_priority,
         "status": status,
         "message": message,
+        # 新增增强型字段
+        "target_group_id": tg_id,
+        "target_group_name": tg_name,
+        "account_name": account_name or row.imported_account_id,
+        "source_group_id": row.group_id,
+        "source_group_name": row.group_name or row.group_id,
+        "source_rate": source_rate,
     }
 
 
@@ -529,12 +547,32 @@ def sync_account_priorities_for_upstream(
                 auth_config=json.loads(website.auth_config_json or "{}"),
                 timeout=float(website.timeout_seconds),
             ) as client:
+                # 尽量拉取目标网站账号列表以获取账号名称和旧 priority，失败不阻断
+                account_info_map: dict[str, dict[str, Any]] = {}
+                try:
+                    remote_accounts = client.list_accounts() or []
+                    for acc in remote_accounts:
+                        acc_id = _extract_id(acc)
+                        if acc_id:
+                            account_info_map[str(acc_id)] = {
+                                "name": acc.get("name") or acc.get("account_name") or str(acc_id),
+                                "priority": acc.get("priority"),
+                            }
+                except Exception as e:
+                    logger.warning("failed to fetch remote accounts for website %s: %s", wid, e)
+
                 for comp_rows in competitive_buckets.values():
                     for row in comp_rows:
                         account_id = row.imported_account_id
                         new_priority = priority_assignment.get(account_id)
                         if new_priority is None:
                             continue
+                        
+                        acc_info = account_info_map.get(str(account_id)) or {}
+                        acc_name = acc_info.get("name") or str(account_id)
+                        old_prio = acc_info.get("priority")
+                        src_rate = raw_rate_map.get(f"{row.upstream_id}:{row.group_id}")
+
                         try:
                             client.update_account(account_id, {"priority": new_priority})
                             logger.info(
@@ -544,7 +582,15 @@ def sync_account_priorities_for_upstream(
                                 row.imported_target_group_id or row.group_id, new_priority,
                             )
                             site_results.append(
-                                _priority_result(row, new_priority, "success", f"优先级已更新为 {new_priority}")
+                                _priority_result(
+                                    row,
+                                    new_priority,
+                                    "success",
+                                    f"优先级已更新为 {new_priority}",
+                                    account_name=acc_name,
+                                    old_priority=old_prio,
+                                    source_rate=src_rate,
+                                )
                             )
                         except Exception as exc:
                             logger.warning(
@@ -552,14 +598,29 @@ def sync_account_priorities_for_upstream(
                                 account_id, wid, exc,
                             )
                             site_results.append(
-                                _priority_result(row, new_priority, "failed", str(exc))
+                                _priority_result(
+                                    row,
+                                    new_priority,
+                                    "failed",
+                                    str(exc),
+                                    account_name=acc_name,
+                                    old_priority=old_prio,
+                                    source_rate=src_rate,
+                                )
                             )
         except Exception as exc:
             logger.warning("failed to connect website %s for account priority sync: %s", wid, exc)
             for comp_rows in competitive_buckets.values():
                 for row in comp_rows:
+                    src_rate = raw_rate_map.get(f"{row.upstream_id}:{row.group_id}")
                     site_results.append(
-                        _priority_result(row, None, "failed", f"连接网站失败: {exc}")
+                        _priority_result(
+                            row,
+                            None,
+                            "failed",
+                            f"连接网站失败: {exc}",
+                            source_rate=src_rate,
+                        )
                     )
 
         # 只发送有实际成功/失败的通知（不包含单账号跳过项）