(DataFlex) Refresh Wish for Merchants OAuth2 Access Token

Demonstrates how to refresh a Wish OAuth2 access token.

Note: This example requires Chilkat v9.5.0.85.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoJsonToken
    Boolean iSuccess
    Handle hoOauth2
    Handle hoSbJson
    String sTemp1

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // See Get Wish OAuth2 Access Token 
    // for sample code showing how to obtain a Wish access token for desktop apps.

    // This example assumes we previously obtained an OAuth2 access token for Wish.

    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken
    If (Not(IsComObjectCreated(hoJsonToken))) Begin
        Send CreateComObject of hoJsonToken
    End
    Get ComLoadFile Of hoJsonToken "qa_data/tokens/wish.json" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Failed to load wish.json"
        Procedure_Return
    End

    // The access token JSON looks something 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"
    //   }
    // }

    Get Create (RefClass(cComChilkatOAuth2)) To hoOauth2
    If (Not(IsComObjectCreated(hoOauth2))) Begin
        Send CreateComObject of hoOauth2
    End

    // Note: In most OAuth2 implementations, the token endpoint is the same for both the
    // refresh request and the exchange-code-for-token request (which happens when getting
    // the OAuth2 token for the 1st time).   Wish uses a different URL for the refresh:
    Set ComTokenEndpoint Of hoOauth2 To "https://merchant.wish.com/api/v3/oauth/refresh_token"

    // The following uncommon option was added in Chilkat v9.5.0.85
    Set ComUncommonOptions Of hoOauth2 To "EXCHANGE_CODE_FOR_TOKEN_USING_GET"

    // Replace these with actual values.
    Set ComClientId Of hoOauth2 To "WISH-CLIENT-ID"
    Set ComClientSecret Of hoOauth2 To "WISH-CLIENT-SECRET"

    // Get the "refresh_token"
    Get ComStringOf Of hoJsonToken "data.refresh_token" To sTemp1
    Set ComRefreshToken Of hoOauth2 To sTemp1

    // Send the HTTP request to refresh the access token..
    Get ComRefreshAccessToken Of hoOauth2 To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Save the new JSON access token response to a file.
    // The access + refresh tokens contained in this JSON will be needed for the next refresh.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbJson
    If (Not(IsComObjectCreated(hoSbJson))) Begin
        Send CreateComObject of hoSbJson
    End
    Get ComAccessTokenResponse Of hoOauth2 To sTemp1
    Get ComAppend Of hoSbJson sTemp1 To iSuccess
    Get ComWriteFile Of hoSbJson "qa_data/tokens/wish.json" "utf-8" False To iSuccess

    Showln "OAuth2 token refreshed!"
    Get ComAccessToken Of hoOauth2 To sTemp1
    Showln "New Access Token = " sTemp1


End_Procedure