How can I get current user roles for specific document in a document library?

Question

I can add a role to a document with this code:

var REST = globalvars.absoluteUrl + "/_api/SP.Sharing.DocumentSharingManager.UpdateDocumentSharingInfo";

var data = JSON.stringify({
    'resourceAddress': fileAdress,
    'userRoleAssignments':
        [{
            '__metadata': { 'type': 'SP.Sharing.UserRoleAssignment' },
            'Role': role,
            'UserId': sharedWith
        }],
    'validateExistingPermissions': false,
    'additiveMode': true,
    'sendServerManagedNotification': sendEmail,
    'customMessage': contentEmail,
    'includeAnonymousLinksInNotification': false
});

But I don't know how to retrieve this information.

Answer 1

Try to get user effective permissions as the following

/_api/web/lists/getbytitle('" + Library Title + "')/getusereffectivepermissions(@user)?@user='" + encodeURIComponent(accountName) + "'"

Also, check

• Lists and list items REST API reference
• GetUserEffectivePermissions(loginName) REST call on a list