PowerBuilder Requires Chilkat v10.1.2+

Wish for Merchants -- Get OAuth2 Access Token for Desktop App

See more OAuth2 Examples

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

integer li_rc
integer li_Success
oleobject loo_Oauth2
string ls_Url
integer li_NumMsWaited
oleobject loo_SbJson

li_Success = 0

//  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.

loo_Oauth2 = create oleobject
li_rc = loo_Oauth2.ConnectToNewObject("Chilkat.OAuth2")
if li_rc < 0 then
    destroy loo_Oauth2
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  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
loo_Oauth2.AppCallbackUrl = "https://yourwebserver.com/OAuth2.php"
loo_Oauth2.ListenPort = 3017

loo_Oauth2.AuthorizationEndpoint = "https://merchant.wish.com/v3/oauth/authorize"
loo_Oauth2.TokenEndpoint = "https://merchant.wish.com/api/v3/oauth/access_token"

loo_Oauth2.UncommonOptions = "EXCHANGE_CODE_FOR_TOKEN_USING_GET"

//  Replace these with actual values.
loo_Oauth2.ClientId = "WISH-CLIENT-ID"
loo_Oauth2.ClientSecret = "WISH-CLIENT-SECRET"

loo_Oauth2.Scope = ""

//  Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
ls_Url = loo_Oauth2.StartAuth()
if loo_Oauth2.LastMethodSuccess <> 1 then
    Write-Debug loo_Oauth2.LastErrorText
    destroy loo_Oauth2
    return
end if

Write-Debug "url = " + ls_Url

//  Launch the default browser on the system and navigate to the url.
//  The LaunchBrowser method was added in Chilkat v10.1.2.
li_Success = loo_Oauth2.LaunchBrowser(ls_Url)
if li_Success = 0 then
    Write-Debug loo_Oauth2.LastErrorText
    destroy loo_Oauth2
    return
end if

//  Wait for the user to approve or deny authorization in the browser.
li_NumMsWaited = 0
do while (li_NumMsWaited < 90000) AND (loo_Oauth2.AuthFlowState < 3)
    loo_Oauth2.SleepMs(100)
    li_NumMsWaited = li_NumMsWaited + 100
loop

//  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 loo_Oauth2.AuthFlowState < 3 then
    loo_Oauth2.Cancel()
    Write-Debug "No response from the browser!"
    destroy loo_Oauth2
    return
end if

//  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 loo_Oauth2.AuthFlowState = 5 then
    Write-Debug "OAuth2 failed to complete."
    Write-Debug loo_Oauth2.FailureInfo
    destroy loo_Oauth2
    return
end if

if loo_Oauth2.AuthFlowState = 4 then
    Write-Debug "OAuth2 authorization was denied."
    Write-Debug loo_Oauth2.AccessTokenResponse
    destroy loo_Oauth2
    return
end if

if loo_Oauth2.AuthFlowState <> 3 then
    Write-Debug "Unexpected AuthFlowState:" + string(loo_Oauth2.AuthFlowState)
    destroy loo_Oauth2
    return
end if

//  Save the full JSON access token response to a file.
loo_SbJson = create oleobject
li_rc = loo_SbJson.ConnectToNewObject("Chilkat.StringBuilder")

loo_SbJson.Append(loo_Oauth2.AccessTokenResponse)
loo_SbJson.WriteFile("qa_data/tokens/wish.json","utf-8",0)

//  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"
//    }
//  }

Write-Debug "OAuth2 authorization granted!"
Write-Debug "Access Token = " + loo_Oauth2.AccessToken


destroy loo_Oauth2
destroy loo_SbJson