Void

After making a pre-Authorization transaction, in some cases you want to void a given preAuth if they are not needed anymore. For this you can use the following code snippet and add your own parameters that are necessary to submit the void.

do {
    let preAuth = try judo.preAuth(myJudoID, amount: oneGBPAmount, reference: validReference).card(validVisaCard)
    
    try preAuth.completion({ (response, error) -> () in
        if let error = error {
            // handle payment failing error
            return
        }
        
        guard let receiptId = response?.first?.receiptID,
            let amount = response?.first?.amount else {
                // payment was successful
                return
        }
        
        do {
            let voidTransaction = try self.judo.voidTransaction(receiptId, amount: amount).completion({ (response, error) -> () in
                if let error = error {
                    // handle error
                }
            })
        } catch {
            // handle exception thrown (eg. judoId not luhn valid)
        }
    })
} catch {
    // handle exception thrown (eg. judoId not luhn valid)
}

be aware that a void will only work for the full amount that has been pre-authorized or any amount lower than that. There is no need to void a higher amount.