Xbase++

Refresh QuickBooks OAuth2 Access Token

See more QuickBooks Examples

Demonstrates how to refresh a QuickBooks OAuth2 access token. Xbase++

LOCAL nSuccess
LOCAL oJsonToken
LOCAL oOauth2
LOCAL oSbJson

nSuccess := 0

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

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

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

oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/qb-access-token.json")
IF (nSuccess != 1)
    ? "Failed to load qb-access-token.json"
    oJsonToken:destroy()
    RETURN
ENDIF

//  The access token JSON looks something like this:

//  {
//    "expires_in": 3600,
//    "x_refresh_token_expires_in": 8726400,
//    "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
//    "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
//    "token_type": "bearer"
//  }

oOauth2 := CreateObject("Chilkat.OAuth2")

oOauth2:TokenEndpoint := "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"

//  Replace these with actual values.
oOauth2:ClientId := "QUICKBOOKS-CLIENT-ID"
oOauth2:ClientSecret := "QUICKBOOKS-CLIENT-SECRET"

//  Get the "refresh_token"
oOauth2:RefreshToken := oJsonToken:StringOf("refresh_token")

//  Send the HTTP POST to refresh the access token..
nSuccess := oOauth2:RefreshAccessToken()
IF (nSuccess == 0)
    ? oOauth2:LastErrorText
    oJsonToken:destroy()
    oOauth2:destroy()
    RETURN
ENDIF

//  The response contains a new access token, but we must keep
//  our existing refresh token for when we need to refresh again in the future.
oJsonToken:UpdateString("access_token", oOauth2:AccessToken)

//  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.
oSbJson := CreateObject("Chilkat.StringBuilder")
oJsonToken:EmitCompact := 0

oJsonToken:EmitSb(oSbJson)
oSbJson:WriteFile("qa_data/tokens/qb-access-token.json", "utf-8", 0)

? "OAuth2 token refreshed!"
? "New Access Token = " + oOauth2:AccessToken

oJsonToken:destroy()
oOauth2:destroy()
oSbJson:destroy()