chore: migrate and structure cmbone project

internal/services/appconfig_service.go

@@ -0,0 +1,52 @@
+package services
+
+type AppConfigService struct {
+	store *SuiStore
+}
+
+// 创建新的AppConfigService实例
+func NewAppConfigService(store *SuiStore) *AppConfigService {
+	return &AppConfigService{
+		store: store,
+	}
+}
+
+// 根据key获取配置项
+func (r *AppConfigService) GetAppConfig(key string) (string, error) {
+	row := r.store.DB.QueryRow(`
+		SELECT value
+		FROM appconfig
+		WHERE key = ?
+	`, key)
+
+	var value string
+	err := row.Scan(&value)
+	if err != nil {
+		return "en", err
+	}
+	return value, nil
+}
+
+// 设置或更新配置项
+func (r *AppConfigService) SetAppConfig(key, value string) error {
+	_, err := r.store.DB.Exec(`
+		INSERT INTO appconfig (key, type, value, description)
+		VALUES (?, 'user', ?, '')
+		ON CONFLICT(key) DO UPDATE SET value=excluded.value
+	`, key, value)
+	return err
+}
+
+// 获取应用语言
+func (s *AppConfigService) GetLanguage() string {
+	lang, err := s.GetAppConfig("language")
+	if err != nil || lang == "" {
+		return "en"
+	}
+	return lang
+}
+
+// 设置应用语言
+func (s *AppConfigService) SetLanguage(lang string) error {
+	return s.SetAppConfig("language", lang)
+}