I am trying out this tutorial on Go and App Script and it works perfectly but the moment I modified the code to access a spreadsheet the go part doesn't execute the script but give a 401 error. Here is my go code (basically code from the tutorial but changed a few things for it to 'work' on my app script) http://pastebin.com/28S5tVY2
I don't know if I made a mistake when creating credentials for the script (I have redone this severally with no success) or if I missed something while doing the modification. Any help will be highly appreciated.
As suggested by @Mogsdad, I looked into adding scopes. On the target App Script, click on File >> Project Properties >> Scopes to get what scopes you need to add. An example of a scope is "https://www.googleapis.com/auth/spreadsheets".
On the Golang code, add the scope like so:
config, err := google.ConfigFromJSON(b, https://www.googleapis.com/auth/drive", "https://www.googleapis.com/auth/spreadsheets")
Hope this helps someone :)