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Description:

go sell sdk flutter

go_sell_sdk_flutter #
Flutter plugin compatible version of goSellSDK library for both Android and iOS that fully covers payment/authorization/card saving/card tokenization process inside your Android application.
Original SDKS

Android (https://github.com/Tap-Payments/goSellSDK-Android)

AndroidX (https://github.com/Tap-Payments/goSellSDK-AndroidX)

iOS (https://github.com/Tap-Payments/goSellSDK-ios)

Getting Started #
Table of Contents #

Requirements

Installation

Installation with pubspec.yaml

Usage

Configure Your App

Configure SDK Session

Transaction Modes

Customer

Shipping

Tax

Reference

Payment Item

Configure Payment Type

Use Tap Pay Button

Handle SDK Result

Apple Pay Setup

Google Pay Setup

Requirements #
To use the SDK the following requirements must be met:

Visual Studio - InteliJ Idea

Dart 2.7.1 or newer

Flutter: >=3.0.0 or newer

iOS 11 or later

XCode 12 or later

Installation #

Include goSellSDK plugin as a dependency in your pubspec.yaml #

dependencies:
go_sell_sdk_flutter: ^2.4.6

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Configure your app #
goSellSDK should be set up. To set it up, add the following lines of code somewhere in your project and make sure they will be called before any usage of goSellSDK.

/**

* Configure App. (You must get those keys from tap)

*/

GoSellSdkFlutter.configureApp(
bundleId: Platform.isAndroid? "ANDROID-PACKAGE-NAME" : "IOS-APP-ID",
productionSecreteKey: Platform.isAndroid? "Android-Live-KEY" : "iOS-Live-KEY",
sandBoxsecretKey: Platform.isAndroid?"Android-SANDBOX-KEY" : "iOS-SANDBOX-KEY",
lang: "en",
);

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Configure SDK Session Example

Future<void> setupSDKSession() async {

try {
GoSellSdkFlutter.sessionConfigurations(
trxMode: TransactionMode.PURCHASE,
transactionCurrency: "kwd",
amount: '100',
customer: Customer(
customerId: "", // customer id is important to retrieve cards saved for this customer
email: "test@test.com",
isdNumber: "965",
number: "00000000",
firstName: "test",
middleName: "test",
lastName: "test",
metaData: null,
),
paymentItems: <PaymentItem>[
PaymentItem(
name: "item1",
amountPerUnit: 1,
quantity: Quantity(value: 1),
discount: {
"type": "F",
"value": 10,
"maximum_fee": 10,
"minimum_fee": 1
},
description: "Item 1 Apple",
taxes: [
Tax(
amount: Amount(
type: "F",
value: 10,
minimum_fee: 1,
maximum_fee: 10,
),
name: "tax1",
description: "tax description",
)
],
totalAmount: 100,
),
],
// List of taxes

taxes: [
Tax(
amount: Amount(
type: "F",
value: 10,
minimum_fee: 1,
maximum_fee: 10,
),
name: "tax1",
description: "tax description",
),
Tax(
amount: Amount(
type: "F",
value: 10,
minimum_fee: 1,
maximum_fee: 10,
),
name: "tax1",
description: "tax description",
),

],
// List of shipping

shippings: [
Shipping(
name: "shipping 1",
amount: 100,
description: "shipping description 1",
),
Shipping(
name: "shipping 2",
amount: 100,
description: "shipping description 2",
),
],
// Post URL
postURL: "https://tap.company",
// Payment description
paymentDescription: "paymentDescription",
// Payment Metadata

paymentMetaData: {
"a": "a meta",
"b": "b meta",
},
// Payment Reference

paymentReference: Reference(
acquirer: "acquirer",
gateway: "gateway",
payment: "payment",
track: "track",
transaction: "trans_910101",
order: "order_262625"),
// payment Descriptor
paymentStatementDescriptor: "paymentStatementDescriptor",
// Save Card Switch
isUserAllowedToSaveCard: true,
// Enable/Disable 3DSecure
isRequires3DSecure: false,
// Receipt SMS/Email
receipt: Receipt(true, false),
// Authorize Action [Capture - Void]
authorizeAction: AuthorizeAction(
type: AuthorizeActionType.CAPTURE, timeInHours: 10),
// Destinations
destinations:Destinations(
amount: 100,
currency: 'kwd',
count: 2,
destinationlist: [
Destination(
id: "",
amount: 100,
currency: "kwd",
description: "des",
reference: "ref_121299"),
Destination(
id: "",
amount: 100,
currency: "kwd",
description: "des",
reference: "ref_22444444")

],
),
// merchant id
merchantID: "",
// Allowed cards
allowedCadTypes: CardType.ALL,
applePayMerchantID: "merchant.applePayMerchantID",
allowsToSaveSameCardMoreThanOnce: false,
// pass the card holder name to the SDK
cardHolderName: "Card Holder NAME",
// disable changing the card holder name by the user
allowsToEditCardHolderName: false,
// Supported payment methods List supportedPaymentMethods: ["knet", "visa"],

/// SDK Appearance Mode appearanceMode: SDKAppearanceMode.fullscreen,
paymentType: PaymentType.ALL,
sdkMode: SDKMode.Sandbox,
);
} on PlatformException {
}
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Transaction Modes
trxMode: TransactionMode.PURCHASE

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You can set the transaction mode into one of the following modes:

Purchase

dart TransactionMode.PURCHASE

Normal customer charge.

Authorize

dart TransactionMode.AUTHORIZE_CAPTURE

Only authorization is happening. You should specify an action after successful authorization: either capture the amount or void the charge after specific period of time.

Save Card

dart TransactionMode.SAVE_CARD

Use this mode to save the card of the customer with Tap and use it later.

Tokenize Card

dart TransactionMode.TOKENIZE_CARD

Use this mode if you are willing to perform the charging/authorization manually. The purpose of this mode is only to collect and tokenize card information details of your customer if you don't have PCI compliance certificate but willing to process the payment manually using our services.

Customer

New Customer (First time to pay using goSell SDK)

Customer(
customerId: "",
email: "test@test.com",
isdNumber: "965",
number: "00000000",
firstName: "test",
middleName: "test",
lastName: "test",
metaData: null,
)
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After the first transaction success, you receive the customerId in the response. Save it to be used in the next transaction.

Existed Customer (paid before using goSell SDK)

You need to set the customerId only and you can see the customer saved cards if the user has.
Customer(
customerId: "cus_smdnd3346nd3dks3jd9drd7d",
email: "",
isdNumber: "965",
number: "00000000",
firstName: "",
middleName: "",
lastName: "",
metaData: null
)
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Please note that goSell SDK using the customerId only if it's not Empty ('').

Shipping

Model for Shipping

Shipping(
name: "shipping",
amount: 150,
description: "shipping description",
)
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Tax

Model for Tax

Tax(
amount: Amount(
type: "F",
value: 10,
minimumFee: 1,
maximumFee: 10,
),
name: "tax1",
description: "tax description",
),
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Reference

Model for Reference

Reference(
acquirer: "acquirer",
gateway: "gateway",
payment: "payment",
track: "track",
transaction: "trans_910101",
order: "order_262625",
),
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Payment Item

Model for Payment Item

PaymentItem(
name: "item1",
amountPerUnit: 1,
quantity: Quantity(value: 1),
discount: {
"type": "F",
"value": 10,
"maximum_fee": 10,
"minimum_fee": 1
},
description: "Item 1 Apple",
taxes: [
Tax(
amount: Amount(
type: "F",
value: 10,
minimumFee: 1,
maximumFee: 10,
),
name: "tax1",
description: "tax description",
)
],
totalAmount: 100,
),
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Configure Payment Type

Set the payment type inside the sessionConfigurations

paymentType: PaymentType.ALL

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| Payment Type | Description |
| ------------- | ------------- |
| ALL | Shows all the available payment methods |
| CARD | Shows only cards payment methods |
| DEVICE | Shows payment methods depending on the device, for iOS it shows ApplePay only |

Use Tap Pay Button

Positioned(

bottom: Platform.isIOS ? 0 : 10,

left: 18,

right: 18,

child: SizedBox(

height: 45,

child: ElevatedButton(

clipBehavior: Clip.hardEdge,

style: ButtonStyle(

backgroundColor: MaterialStateProperty.all(_buttonColor),

shape: MaterialStateProperty.all(

RoundedRectangleBorder(

borderRadius: BorderRadius.circular(30),

),

),

),

onPressed: startSDK,

child: Row(

mainAxisAlignment: MainAxisAlignment.center,

children: [

Container(

width: 25,

height: 25,

child: AwesomeLoader(

outerColor: Colors.white,

innerColor: Colors.white,

strokeWidth: 3.0,

controller: loaderController,

),

),

Spacer(),

Text(

'PAY',

style: TextStyle(

color: Colors.white,

fontSize: 16.0,

),

),

Spacer(),

Icon(

Icons.lock_outline,

color: Colors.white,

),

],

),

),

),

),

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Handle SDK Result

Start SDK

tapSDKResult = await GoSellSdkFlutter.startPaymentSDK;

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Hnadle SDK result

setState(() {

switch (tapSDKResult['sdk_result']) {

case "SUCCESS":

sdkStatus = "SUCCESS";

handleSDKResult();

break;

case "FAILED":

sdkStatus = "FAILED";

handleSDKResult();

break;

case "SDK_ERROR":

sdkErrorCode = tapSDKResult['sdk_error_code'].toString();

sdkErrorMessage = tapSDKResult['sdk_error_message'];

sdkErrorDescription = tapSDKResult['sdk_error_description'];

break;

case "NOT_IMPLEMENTED":

sdkStatus = "NOT_IMPLEMENTED";

break;

}

});

void handleSDKResult() {

switch (tapSDKResult['trx_mode']) {

case "CHARGE":

case "AUTHORIZE":

case "SAVE_CARD":

extractSDKResultKeysAndValues();

break;

case "TOKENIZE":

token : =tapSDKResult['token'];

token_currency =tapSDKResult['token_currency'];

card_first_six =tapSDKResult['card_first_six'];

card_last_four =tapSDKResult['card_last_four'];

card_object =tapSDKResult['card_object'];

card_exp_month =tapSDKResult['card_exp_month'];

card_exp_year =tapSDKResult['card_exp_year'];

break;

}

}

void extractSDKResultKeysAndValues() {

id = tapSDKResult['charge_id'];

description = tapSDKResult['description'];

message = tapSDKResult['message'];

card_first_six = tapSDKResult['card_first_six'];

card_last_four = tapSDKResult['card_last_four'];

card_object = tapSDKResult['card_object'];

card_brand = tapSDKResult['card_brand'];

card_exp_month = tapSDKResult['card_exp_month'];

card_exp_year = tapSDKResult['card_exp_year'];

acquirer_id = tapSDKResult['acquirer_id'];

acquirer_response_code = tapSDKResult['acquirer_response_code'];

acquirer_response_message = tapSDKResult['acquirer_response_message'];

source_id = tapSDKResult['source_id'];

source_channel = tapSDKResult['source_channel'];

source_object = tapSDKResult['source_object'];

source_payment_type = tapSDKResult['source_payment_type'];

responseID = tapSDKResult['charge_id'];

}

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Apple pay setup
Follow the steps shared in the following link to setup apple pay:
https://github.com/Tap-Payments/goSellSDK-ios#apple-pay

Google pay setup
Follow the steps shared in the following link to setup google pay:
https://github.com/Tap-Payments/goSellSDK-AndroidX?tab=readme-ov-file#google-pay