code refactor

pkg/avatars/internal_storage_provider.go

@@ -0,0 +1,31 @@
+package avatars
+
+import (
+	"fmt"
+
+	"github.com/mayswind/ezbookkeeping/pkg/models"
+	"github.com/mayswind/ezbookkeeping/pkg/settings"
+)
+
+const internalAvatarUrlFormat = "%savatar/%d.%s"
+
+// InternalStorageAvatarProvider represents the internal storage avatar provider
+type InternalStorageAvatarProvider struct {
+	webRootUrl string
+}
+
+// NewInternalStorageAvatarProvider returns a new internal storage avatar provider
+func NewInternalStorageAvatarProvider(config *settings.Config) *InternalStorageAvatarProvider {
+	return &InternalStorageAvatarProvider{
+		webRootUrl: config.RootUrl,
+	}
+}
+
+// GetAvatarUrl returns the built-in avatar url
+func (p *InternalStorageAvatarProvider) GetAvatarUrl(user *models.User) string {
+	if user.CustomAvatarType == "" {
+		return ""
+	}
+
+	return fmt.Sprintf(internalAvatarUrlFormat, p.webRootUrl, user.Uid, user.CustomAvatarType)
+}