From 3e90eefd51f4ffb033ab83658f55bc343c2e27f0 Mon Sep 17 00:00:00 2001
From: lafay <2021211506@stu.hit.edu.cn>
Date: Fri, 24 Apr 2026 16:43:12 +0800
Subject: [PATCH] chore(utils): replace UI Avatars API with static default
 avatar

Remove external UI Avatars API dependency and use a static default avatar
URL instead. Simplifies avatar utility functions by eliminating dynamic
avatar generation.
---
 internal/pkg/utils/avatar.go               | 36 ++--------------------
 internal/service/system_message_service.go |  4 +--
 2 files changed, 4 insertions(+), 36 deletions(-)

diff --git a/internal/pkg/utils/avatar.go b/internal/pkg/utils/avatar.go
index 3282ba7..b030513 100644
--- a/internal/pkg/utils/avatar.go
+++ b/internal/pkg/utils/avatar.go
@@ -1,52 +1,20 @@
 package utils
 
-import (
-	"net/url"
-)
+const DefaultAvatarURL = "https://storage.littlelan.cn/withyou/avatars/74d567f5b8ab536483355a09a9767c77934bd0f1fd6de880b3a1c86f54e366e9.png"
 
-// AvatarServiceBaseURL 默认头像服务基础URL (使用 UI Avatars API)
-const AvatarServiceBaseURL = "https://ui-avatars.com/api"
-
-// DefaultAvatarSize 默认头像尺寸
-const DefaultAvatarSize = 100
-
-// AvatarInfo 头像信息
 type AvatarInfo struct {
 	Username string
 	Nickname string
 	Avatar   string
 }
 
-// GetAvatarOrDefault 获取头像URL，如果为空则返回在线头像生成服务的URL
-// 优先使用已有的头像，否则使用昵称或用户名生成默认头像
 func GetAvatarOrDefault(username, nickname, avatar string) string {
 	if avatar != "" {
 		return avatar
 	}
-	// 使用用户名生成默认头像URL（优先使用昵称）
-	displayName := nickname
-	if displayName == "" {
-		displayName = username
-	}
-	return GenerateDefaultAvatarURL(displayName)
+	return DefaultAvatarURL
 }
 
-// GetAvatarOrDefaultFromInfo 从 AvatarInfo 获取头像URL
 func GetAvatarOrDefaultFromInfo(info AvatarInfo) string {
 	return GetAvatarOrDefault(info.Username, info.Nickname, info.Avatar)
 }
-
-// GenerateDefaultAvatarURL 生成默认头像URL
-// 使用 UI Avatars API 生成基于用户名首字母的头像
-func GenerateDefaultAvatarURL(name string) string {
-	if name == "" {
-		name = "?"
-	}
-	// 使用 UI Avatars API 生成头像
-	params := url.Values{}
-	params.Set("name", url.QueryEscape(name))
-	params.Set("size", "100")
-	params.Set("background", "0D8ABC") // 默认蓝色背景
-	params.Set("color", "ffffff")      // 白色文字
-	return AvatarServiceBaseURL + "?" + params.Encode()
-}
diff --git a/internal/service/system_message_service.go b/internal/service/system_message_service.go
index a7e5a82..ce00892 100644
--- a/internal/service/system_message_service.go
+++ b/internal/service/system_message_service.go
@@ -461,13 +461,13 @@ func (s *systemMessageServiceImpl) getActorInfo(ctx context.Context, operatorID
 	if s.userRepo != nil {
 		user, err := s.userRepo.GetByID(operatorID)
 		if err != nil {
-			return "用户", utils.GenerateDefaultAvatarURL("用户"), nil // 返回默认值，不阻断流程
+			return "用户", utils.DefaultAvatarURL, nil
 		}
 		avatar := utils.GetAvatarOrDefault(user.Username, user.Nickname, user.Avatar)
 		return user.Nickname, avatar, nil
 	}
 	// 如果没有用户仓储，返回默认值
-	return "用户", utils.GenerateDefaultAvatarURL("用户"), nil
+	return "用户", utils.DefaultAvatarURL, nil
 }
 
 // getPostTitle 获取帖子标题