feat: add image upload functionality for articles

- Implemented image upload API in the article service, allowing users to upload images associated with articles.
- Added validation for image size and type, ensuring only supported formats (PNG, JPG, GIF, WebP) are accepted.
- Created a new Aliyun object storage client to handle image storage and retrieval.
- Updated the article handler to include an endpoint for image uploads.
- Enhanced error handling for image upload failures and added relevant error messages.
- Introduced public URL generation for stored images, allowing access via signed tokens.
- Updated localization files to include new messages related to image upload functionality.
- Added tests for image upload and retrieval processes.

server/internal/shared/objectstorage/client.go

@@ -18,6 +18,7 @@ type Client interface {
 	PutBytes(ctx context.Context, objectKey string, content []byte, contentType string) error
 	GetBytes(ctx context.Context, objectKey string) ([]byte, error)
 	Delete(ctx context.Context, objectKey string) error
+	PublicURL(objectKey string) (string, error)
 }
 
 func New(cfg config.ObjectStorageConfig, logger *zap.Logger) Client {
@@ -27,6 +28,8 @@ func New(cfg config.ObjectStorageConfig, logger *zap.Logger) Client {
 		return disabledClient{reason: "object storage is disabled"}
 	case "minio":
 		return NewMinIOClient(cfg, logger)
+	case "aliyun", "aliyun_oss", "aliyun-oss", "oss":
+		return NewAliyunClient(cfg, logger)
 	default:
 		return disabledClient{reason: fmt.Sprintf("unsupported object storage provider %q", cfg.Provider)}
 	}
@@ -54,3 +57,7 @@ func (c disabledClient) GetBytes(context.Context, string) ([]byte, error) {
 func (c disabledClient) Delete(context.Context, string) error {
 	return c.Validate()
 }
+
+func (c disabledClient) PublicURL(string) (string, error) {
+	return "", c.Validate()
+}