(AutoIt) Wish for Merchants -- Get OAuth2 Access Token for Desktop App

Demonstrates how to get a Wish for Merchants OAuth2 access token from a desktop application or script.

Note: This example requires Chilkat v10.1.2 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

; To further clarify, see OAuth 2.0 Authorization Flow

; This example is for desktop applicatons (it is not for code that runs on a web server).

; This is the way to initially obtain the OAuth2 access token.  Afterwards it can be 
; repeatedly refreshed without user interaction, as shown in this example: Refresh Wish OAuth2 Access Token.

$oOauth2 = ObjCreate("Chilkat.OAuth2")

; Wish OAuth2 does not allow a localhost callback URI such as "http://localhost:<portNumber>/"
; For a desktop app, you must provide a script on your web server to redirect to "http://localhost/<portNumber>"

; Your applicaton must use your own public web server as an intermediate
; to receive and forward the redirect to localhost.
; See Using Your Web Server as an Intermediary for OAuth2 Redirect to localhost
$oOauth2.AppCallbackUrl = "https://yourwebserver.com/OAuth2.php"
$oOauth2.ListenPort = 3017

$oOauth2.AuthorizationEndpoint = "https://merchant.wish.com/v3/oauth/authorize"
$oOauth2.TokenEndpoint = "https://merchant.wish.com/api/v3/oauth/access_token"

$oOauth2.UncommonOptions = "EXCHANGE_CODE_FOR_TOKEN_USING_GET"

; Replace these with actual values.
$oOauth2.ClientId = "WISH-CLIENT-ID"
$oOauth2.ClientSecret = "WISH-CLIENT-SECRET"

$oOauth2.Scope = ""

; Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
Local $sUrl = $oOauth2.StartAuth()
If ($oOauth2.LastMethodSuccess <> True) Then
    ConsoleWrite($oOauth2.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("url = " & $sUrl & @CRLF)

; Launch the default browser on the system and navigate to the url.
; The LaunchBrowser method was added in Chilkat v10.1.2.
Local $bSuccess = $oOauth2.LaunchBrowser($sUrl)
If ($bSuccess = False) Then
    ConsoleWrite($oOauth2.LastErrorText & @CRLF)
    Exit
EndIf

; Wait for the user to approve or deny authorization in the browser.
Local $iNumMsWaited = 0
While ($iNumMsWaited < 90000) And ($oOauth2.AuthFlowState < 3)
    $oOauth2.SleepMs 100
    $iNumMsWaited = $iNumMsWaited + 100
Wend

; If the browser does not respond within the specified time, AuthFlowState will be:
; 
; 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
; 2: Waiting for Final Response - The thread is awaiting the final access token response.
; In either case, cancel the background task initiated by StartAuth.

If ($oOauth2.AuthFlowState < 3) Then
    $oOauth2.Cancel()
    ConsoleWrite("No response from the browser!" & @CRLF)
    Exit
EndIf

; Check AuthFlowState to determine if authorization was granted, denied, or failed:
; 
; 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
; 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
; 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

If ($oOauth2.AuthFlowState = 5) Then
    ConsoleWrite("OAuth2 failed to complete." & @CRLF)
    ConsoleWrite($oOauth2.FailureInfo & @CRLF)
    Exit
EndIf

If ($oOauth2.AuthFlowState = 4) Then
    ConsoleWrite("OAuth2 authorization was denied." & @CRLF)
    ConsoleWrite($oOauth2.AccessTokenResponse & @CRLF)
    Exit
EndIf

If ($oOauth2.AuthFlowState <> 3) Then
    ConsoleWrite("Unexpected AuthFlowState:" & $oOauth2.AuthFlowState & @CRLF)
    Exit
EndIf

; Save the full JSON access token response to a file.
$oSbJson = ObjCreate("Chilkat.StringBuilder")
$oSbJson.Append($oOauth2.AccessTokenResponse)
$oSbJson.WriteFile("qa_data/tokens/wish.json","utf-8",False)

; The full JSON received looks like this:
; {
;   "message": "",
;   "code": 0,
;   "data": {
;     "access_token": "15af1c191c1243b029bc1660b5c08ce7",
;     "scopes": [
;       "epc:read",
;       "epc:write",
;       "fbs:read",
;       "fbs:write",
;       "fbw:read",
;       "fbw:write",
;       "infractions:read",
;       "infractions:write",
;       "insurance:read",
;       "insurance:write",
;       "loans:read",
;       "loans:write",
;       "merchant:read",
;       "merchant:write",
;       "notifications:read",
;       "notifications:write",
;       "orders:read",
;       "orders:write",
;       "payments:read",
;       "payments:write",
;       "penalties:read",
;       "penalties:write",
;       "product_boost:read",
;       "product_boost:write",
;       "products:read",
;       "products:write",
;       "ratings:read",
;       "ratings:write",
;       "returns:read",
;       "returns:write",
;       "tickets:read",
;       "tickets:write"
;     ],
;     "merchant_id": "5eb3f605178f5be2c784fa02",
;     "expiry_time": "2020-12-17T16:55:09.594+00:00",
;     "refresh_token": "55a38e44df674a1e859891624b2c4c23"
;   }
; }

ConsoleWrite("OAuth2 authorization granted!" & @CRLF)
ConsoleWrite("Access Token = " & $oOauth2.AccessToken & @CRLF)