Method GetFileFromLocalCloudStore

server/resource/dbmethods.go:3943–3980

resolve a file column from data in column to actual file on a cloud store returns a map containing the metadata of the file and the file contents as base64 encoded can be sent to browser to invoke downloading js and data urls

(tableName string, columnName string, filesList []map[string]interface{})

// returns a map containing the metadata of the file and the file contents as base64 encoded
// can be sent to browser to invoke downloading js and data urls
func (dbResource *DbResource) GetFileFromLocalCloudStore(tableName string, columnName string, filesList []map[string]interface{}) (resp []map[string]interface{}, err error) {

	assetFolder, ok := dbResource.AssetFolderCache[tableName][columnName]
	if !ok {
		return nil, fmt.Errorf("not a synced folder [%v][%v]", tableName, columnName)
	}

	for _, fileItem := range filesList {
		newFileItem := make(map[string]interface{})

		for key, val := range fileItem {
			newFileItem[key] = val
		}

		if fileItem["src"] == nil {
			log.Printf("file has no source: [%v][%v]", tableName, columnName)
			continue
		}

		filePath := fileItem["src"].(string)
		filePath = strings.ReplaceAll(filePath, "/", string(os.PathSeparator))
		filePath = path.Clean(filePath)
		if filePath[0] != os.PathSeparator {
			filePath = string(os.PathSeparator) + filePath
		}
		file, err := assetFolder.GetFileByName(filePath)
		bytes, err := io.ReadAll(file)
		file.Close()
		CheckErr(err, "Failed to read file on storage [%v]: %v", assetFolder.LocalSyncPath, filePath)
		if err != nil {
			continue
		}
		newFileItem["reference_id"] = fileItem["name"]
		newFileItem["contents"] = base64.StdEncoding.EncodeToString(bytes)
		resp = append(resp, newFileItem)
	}
	return resp, nil
}