package storage

import (
	"context"
	"fmt"

	"git.misaka.ren/M1saka/docker_backup/internal/config"
)

// Backend is the interface for uploading backups to remote storage.
type Backend interface {
	Upload(ctx context.Context, projectName, localPath string) error
}

// FromConfig creates storage backends from the config.
// Returns an error only if a backend is configured but fails to initialize.
func FromConfig(cfg *config.RemoteConfig) ([]Backend, error) {
	var backends []Backend

	if cfg.S3 != nil {
		s3, err := NewS3Backend(cfg.S3)
		if err != nil {
			return nil, fmt.Errorf("s3: %w", err)
		}
		backends = append(backends, s3)
	}
	if cfg.WebDAV != nil {
		backends = append(backends, NewWebDAVBackend(cfg.WebDAV))
	}

	return backends, nil
}