// Replace with your app's URL scheme.
let callbackURL = URL(string: "<# Your URL Scheme #>://")!

// Your client ID is the same as your Square Application ID.
// Note: You only need to set your client ID once, before creating your first request.
SCCAPIRequest.setApplicationID("<# Application ID #>")

do {
    // Specify the amount of money to charge.
    let money = try SCCMoney(amountCents: 100, currencyCode: "USD")

    // Create the request.
    let apiRequest =
        try SCCAPIRequest(
                callbackURL: callbackURL,
                amount: money,
                userInfoString: nil,
                locationID: nil,
                notes: "Coffee",
                customerID: nil,
                supportedTenderTypes: .all,
                clearsDefaultFees: false,
                returnsAutomaticallyAfterPayment: false,
                disablesKeyedInCardEntry: false,
                skipsReceipt: false
        )

    // Open Point of Sale to complete the payment.
    try SCCAPIConnection.perform(apiRequest)

} catch let error as NSError {
    print(error.localizedDescription)
}

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    guard SCCAPIResponse.isSquareResponse(url) else {
        return true
    }

    do {
        let response = try SCCAPIResponse(responseURL: url)

        if let error = response.error {
            // Handle a failed request.
            print(error.localizedDescription)
        } else {
            // Handle a successful request.
        }

    } catch let error as NSError {
        // Handle unexpected errors.
        print(error.localizedDescription)
    }

    return true
}