(Go) PayPal - Mark Invoice as Paid

Mark an invoice as paid.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // Note: Requires Chilkat v9.5.0.65 or greater.

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

    // Load our previously obtained access token. (see PayPal OAuth2 Access Token)
    jsonToken := chilkat.NewJsonObject()
    jsonToken.LoadFile("qa_data/tokens/paypal.json")

    // Build the Authorization request header field value.
    sbAuth := chilkat.NewStringBuilder()
    // token_type should be "Bearer"
    sbAuth.Append(*jsonToken.StringOf("token_type"))
    sbAuth.Append(" ")
    sbAuth.Append(*jsonToken.StringOf("access_token"))

    // Make the initial connection.
    // A single REST object, once connected, can be used for many PayPal REST API calls.
    // The auto-reconnect indicates that if the already-established HTTPS connection is closed,
    // then it will be automatically re-established as needed.
    rest := chilkat.NewRest()
    bAutoReconnect := true
    success := rest.Connect("api.sandbox.paypal.com",443,true,bAutoReconnect)
    if success != true {
        fmt.Println(rest.LastErrorText())
        jsonToken.DisposeJsonObject()
        sbAuth.DisposeStringBuilder()
        rest.DisposeRest()
        return
    }

    // ----------------------------------------------------------------------------------------------
    // The code above this comment could be placed inside a function/subroutine within the application
    // because the connection does not need to be made for every request.  Once the connection is made
    // the app may send many requests..
    // ----------------------------------------------------------------------------------------------

    // Build the JSON request body containing the reminder information:
    json := chilkat.NewJsonObject()
    json.SetEmitCompact(false)
    json.UpdateString("method","CREDIT_CARD")
    dtNow := chilkat.NewCkDateTime()
    dtNow.SetFromCurrentSystemTime()
    sbDt := chilkat.NewStringBuilder()
    sbDt.Append(*dtNow.GetAsTimestamp(false))
    numReplaced := sbDt.Replace("T"," ")
    numReplaced = sbDt.Replace("Z"," UTC")
    json.UpdateString("date",*sbDt.GetAsString())
    json.UpdateString("note","I got the payment by credit card!")
    json.UpdateString("amount.currency","USD")
    json.UpdateString("amount.value","500.00")
    fmt.Println(*json.Emit())

    // The JSON created by the above code:

    // 	{ 
    // 	  "method": "CREDIT_CARD",
    // 	  "date": "2016-11-28 21:05:38 UTC",
    // 	  "note": "I got the payment by credit card!",
    // 	  "amount": { 
    // 	    "currency": "USD",
    // 	    "value": "500.00"
    // 	  }
    // 	}

    // Build a path using a previously-sent invoice ID.
    sbPath := chilkat.NewStringBuilder()
    sbPath.Append("/v1/invoicing/invoices/invoice_id/record-payment")
    numReplacements := sbPath.Replace("invoice_id","INV2-QCHR-QHSD-M2VU-AVXC")

    json.SetEmitCompact(true)
    sbRequestBody := chilkat.NewStringBuilder()
    sbResponseBody := chilkat.NewStringBuilder()

    rest.AddHeader("Content-Type","application/json")
    rest.AddHeader("Authorization",*sbAuth.GetAsString())
    json.EmitSb(sbRequestBody)

    success = rest.FullRequestSb("POST",*sbPath.GetAsString(),sbRequestBody,sbResponseBody)
    if success != true {
        fmt.Println(rest.LastErrorText())
        jsonToken.DisposeJsonObject()
        sbAuth.DisposeStringBuilder()
        rest.DisposeRest()
        json.DisposeJsonObject()
        dtNow.DisposeCkDateTime()
        sbDt.DisposeStringBuilder()
        sbPath.DisposeStringBuilder()
        sbRequestBody.DisposeStringBuilder()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    fmt.Println("Response Status Code = ", rest.ResponseStatusCode())

    // Check for a success response.
    if rest.ResponseStatusCode() != 204 {
        fmt.Println(*sbResponseBody.GetAsString())
        fmt.Println("Failed.")
        jsonToken.DisposeJsonObject()
        sbAuth.DisposeStringBuilder()
        rest.DisposeRest()
        json.DisposeJsonObject()
        dtNow.DisposeCkDateTime()
        sbDt.DisposeStringBuilder()
        sbPath.DisposeStringBuilder()
        sbRequestBody.DisposeStringBuilder()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    // For a success response, the response body is empty.
    fmt.Println("Success.")

    jsonToken.DisposeJsonObject()
    sbAuth.DisposeStringBuilder()
    rest.DisposeRest()
    json.DisposeJsonObject()
    dtNow.DisposeCkDateTime()
    sbDt.DisposeStringBuilder()
    sbPath.DisposeStringBuilder()
    sbRequestBody.DisposeStringBuilder()
    sbResponseBody.DisposeStringBuilder()