(Lianja) PayPal Send Invoice

Sends a PayPal invoice to a customer.

See also Send Invoice

Chilkat Lianja Extension Download Chilkat Lianja Extension

// Note: Requires Chilkat v9.5.0.64 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)
loJsonToken = createobject("CkJsonObject")
loJsonToken.LoadFile("qa_data/tokens/paypal.json")

// Build the Authorization request header field value.
loSbAuth = createobject("CkStringBuilder")
// token_type should be "Bearer"
loSbAuth.Append(loJsonToken.StringOf("token_type"))
loSbAuth.Append(" ")
loSbAuth.Append(loJsonToken.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.
loRest = createobject("CkRest")
llBAutoReconnect = .T.
llSuccess = loRest.Connect("api.sandbox.paypal.com",443,.T.,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loSbAuth
    release loRest
    return
endif

// ----------------------------------------------------------------------------------------------
// 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 a path using a draft invoice ID.
loSbPath = createobject("CkStringBuilder")
loSbPath.Append("/v1/invoicing/invoices/invoice_id/send")
lnNumReplacements = loSbPath.Replace("invoice_id","INV2-QCHR-QHSD-M2VU-AVXC")

loRest.AddHeader("Authorization",loSbAuth.GetAsString())
loRest.AddQueryParam("notify_merchant","true")

lcResponseBody = loRest.FullRequestFormUrlEncoded("POST",loSbPath.GetAsString())
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loSbAuth
    release loRest
    release loSbPath
    return
endif

? "Response Status Code = " + str(loRest.ResponseStatusCode)

// Did we get a 202 accepted response?
if (loRest.ResponseStatusCode <> 202) then
    ? lcResponseBody
    ? "Failed."
    release loJsonToken
    release loSbAuth
    release loRest
    release loSbPath
    return
endif

// If the 202 response is received, the response body would be empty...
? "Success."


release loJsonToken
release loSbAuth
release loRest
release loSbPath