Adds another subcommand layer share list.

[bonafidehan]

Usage: share list link and share list folder. Manually tested.

[grantseltzer]

Hi @bonafidehan

FWIW this looks good to me, I think layering it out, even if link and folder are the only two options anyway, is better design for future feature additions. 👍

My one comment is that it may be good to use the 'golumns' library I wrote for use in the ls command. It was made with the idea in mind that it would be general approach for output in dbxcli [1] I'm going to be actively working on it too!

Here's a couple rough code snippets that you can use if you and @diwakergupta like this idea:
(You can also look in ls.go)

For folders:

func printFolders(entries []*sharing.SharedFolderMetadata) {
    var listOfFolders []string
    for _, f := range entries {
        listOfFolders = append(listOfFolders, f.PathLower+"\t"+f.PreviewUrl)
    }
    golumns.Display(listOfFolders)
}

For links:

func printLinks(links []sharing.IsSharedLinkMetadata) {
    var listOfSharedLinkMetaData []sharing.SharedLinkMetadata
    for _, l := range links {
        switch sl := l.(type) {
        case *sharing.FileLinkMetadata:
            listOfSharedLinkMetaData = append(listOfSharedLinkMetaData, sl.SharedLinkMetadata)
        case *sharing.FolderLinkMetadata:
            listOfSharedLinkMetaData = append(listOfSharedLinkMetaData, sl.SharedLinkMetadata)
        default:
            fmt.Printf("found unknown shared link type")
        }
    }
    var metadataStrings []string
    for _, i := range listOfSharedLinkMetaData {
        metadataStrings = append(metadataStrings, i.Name+"\t"+i.Url)
    }

    if len(metadataStrings) == 0 {
        metadataStrings = append(metadataStrings, "")
    }
    golumns.Display(metadataStrings)
}

[1] #27 (comment)

[diwakergupta]

+1 for using golumns where applicable!

[diwakergupta]

We can incorporate golumn in a future commit.