Class StateTokenBuilder

    • StateTokenBuilder allows scripts to create state tokens for use in callback APIs like OAuth flows.

    • The getCallbackURL function demonstrates how to generate a callback URL programmatically using a state token.

    • Methods available include createToken() , withArgument() , withMethod() , and withTimeout() to configure the state token.

    • createToken() generates the encrypted string representation of the token.

    • withTimeout() sets the token's validity duration in seconds, with a maximum of 3600 seconds.
    State Token Builder

    Allows scripts to create state tokens that can be used in callback APIs (like OAuth flows).

     // Reusable function to generate a callback URL, assuming the script has been 
 // published as a web app (necessary to obtain the URL programmatically). If the 
 // script has not been published as a web app, set `var url` in the first line 
 // to the URL of your script project (which cannot be obtained 
 // programmatically). 
 function 
  
 getCallbackURL 
 ( 
 callbackFunction 
 ) 
  
 { 
  
 let 
  
 url 
  
 = 
  
 ScriptApp 
 . 
 getService 
 (). 
 getUrl 
 (); 
  
 // Ends in /exec (for a web app) 
  
 url 
  
 = 
  
 ` 
 ${ 
  
 url 
 . 
 slice 
 ( 
 0 
 , 
  
 - 
 4 
 ) 
 } 
 usercallback?state=` 
 ; 
  
 // Change /exec to /usercallback 
  
 const 
  
 stateToken 
  
 = 
  
 ScriptApp 
 . 
 newStateToken 
 () 
  
 . 
 withMethod 
 ( 
 callbackFunction 
 ) 
  
 . 
 withTimeout 
 ( 
 120 
 ) 
  
 . 
 createToken 
 (); 
  
 return 
  
 url 
  
 + 
  
 stateToken 
 ; 
 }

    Methods

    Method Return type Brief description
    create Token()
    		String Constructs an encrypted string representation of the state token.
    with Argument(name, value)
    		State Token Builder Adds an argument to the token.
    with Method(method)
    		State Token Builder Sets a callback function.
    with Timeout(seconds)
    		State Token Builder Sets the duration (in seconds) for which the token is valid.

    Detailed documentation

    create Token()

    Constructs an encrypted string representation of the state token.

     const 
  
 stateToken 
  
 = 
  
 ScriptApp 
 . 
 newStateToken 
 (). 
 createToken 
 ();

    Return

    String — an encrypted string representing the token

    with Argument(name, value)

    Adds an argument to the token. This method can be called multiple times.

     const 
  
 stateToken 
  
 = 
  
 ScriptApp 
 . 
 newStateToken 
 (). 
 withArgument 
 ( 
 'myField' 
 , 
  
 'myValue' 
 ). 
 createToken 
 ();

    Parameters

    Name Type Description
    name
    		String the name of the argument
    value
    		String the value of the argument

    Return

    State Token Builder — the state token builder, for chaining

    with Method(method)

    Sets a callback function. The default is a function named callback() .

     const 
  
 stateToken 
  
 = 
  
 ScriptApp 
 . 
 newStateToken 
 (). 
 withMethod 
 ( 
 'myCallback' 
 ). 
 createToken 
 ();

    Parameters

    Name Type Description
    method
    		String The name of the callback function, represented as a string without parentheses or arguments. You can use functions from included libraries, such as Library.libFunction1 .

    Return

    State Token Builder — the state token builder, for chaining

    with Timeout(seconds)

    Sets the duration (in seconds) for which the token is valid. The defaults is 60 seconds; the maximum duration is 3600 seconds (1 hour).

     const 
  
 stateToken 
  
 = 
  
 ScriptApp 
 . 
 newStateToken 
 (). 
 withTimeout 
 ( 
 60 
 ). 
 createToken 
 ();

    Parameters

    Name Type Description
    seconds
    		Integer the duration for which the token is valid; the maximum value is 3600

    Return

    State Token Builder — the state token builder, for chaining
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