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repositories {  mavenCentral()}
dependencies {  implementation 'io.primer:android:latest.version'}

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android {    kotlinOptions {        freeCompilerArgs += '-Xjvm-default=all'    }}

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class CheckoutActivity : AppCompatActivity() {
  private val listener = object : PrimerHeadlessUniversalCheckoutListener {
    // 👇 [Required] This function will return the list of payment methods    override fun onAvailablePaymentMethodsLoaded(paymentMethods: List<PrimerHeadlessUniversalCheckoutPaymentMethod>) {      // Use it to enable users to select a payment method    }
    // 👇 [Required] This function is called when the checkout has been completed    override fun onCheckoutCompleted(checkoutData: PrimerCheckoutData) {      // Show an order confirmation screen, fullfil the order...      // checkoutData contains the payment that has been created    }
    // 👇 [Required] This function is called if something goes wrong    override fun onFailed(error: PrimerError, checkoutData: PrimerCheckoutData?) {      // your custom method to show an error view    }  }}

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class CheckoutActivity : AppCompatActivity() {
  // other code goes here  private val listener = object : PrimerHeadlessUniversalCheckoutListener {    // ...  }
  private fun setupObservers() {    viewModel.clientToken.observe(this) { clientToken ->      // Start the headless checkout session upon reception of the client token      startHeadlessUniversalCheckout(clientToken)    }  }
  private fun startHeadlessUniversalCheckout(clientToken: String) {    // 👇 Start Headless Universal Checkout with your session's client token    PrimerHeadlessUniversalCheckout.current.start(      this,      clientToken,      PrimerSettings(),      listener,    )  }}

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private val listener = object : PrimerHeadlessUniversalCheckoutListener {
  override fun onAvailablePaymentMethodsLoaded(    paymentMethods: List<PrimerHeadlessUniversalCheckoutPaymentMethod>  ) {    paymentMethods.forEach { setupPaymentMethod(it.paymentMethodType) }  }}
// your custom method to render list of payment method buttons UI.private fun setupPaymentMethod(paymentMethodType: String) {  // implement payment method UI}

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private val listener = object : PrimerHeadlessUniversalCheckoutListener {
  override fun onAvailablePaymentMethodsLoaded(    paymentMethods: List<PrimerHeadlessUniversalCheckoutPaymentMethod>  ) {    paymentMethods.forEach { setupPaymentMethod(it.paymentMethodType) }  }}
// your custom method to render the list of payment method buttonsprivate fun setupPaymentMethod(paymentMethodType: String) {    val paymentMethodAsset = try {    // 👇 Retrieve the assets of a specific payment method    PrimerHeadlessUniversalCheckoutAssetsManager.getPaymentMethodAsset(this, paymentMethodType)      } catch (e: SdkUninitializedException) {         null      }}

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class CheckoutActivity : AppCompatActivity() {    // other code goes here    private fun onPaymentMethodSelected(paymentMethodType: String) {        try {            // 👇 Create the payment method manager            val nativeUiManager = PrimerHeadlessUniversalCheckoutNativeUiManager.newInstance(paymentMethodType)
            // 👇 Show the payment method            nativeUiManager.showPaymentMethod(this, PrimerSessionIntent.CHECKOUT)        } catch (e: SdkUninitializedException) {            // handle exception        } catch (e: UnsupportedPaymentIntentException) {            // handle exception        } catch (e: UnsupportedPaymentMethodException) {            // handle exception        }    }}

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class CheckoutActivity : AppCompatActivity() {
    // val submitButton = findViewById<Button>(R.id.pay_with_card)
    private lateinit var rawDataManager: PrimerHeadlessUniversalCheckoutRawDataManagerInterface
    private val rawDataManagerListener: PrimerHeadlessUniversalCheckoutRawDataManagerListener =        object : PrimerHeadlessUniversalCheckoutRawDataManagerListener {            override fun onValidationChanged(                isValid: Boolean,                errors: List<PrimerInputValidationError>            ) {            }        }
    private fun setupManager(paymentMethodType: String) {        try {            // 👇 Initialize the raw data manager            rawDataManager =                PrimerHeadlessUniversalCheckoutRawDataManager.newInstance(paymentMethodType)
            // 👇 Set the manager listener            rawDataManager.setListener(rawDataManagerListener)        } catch (e: SdkUninitializedException) {            // handle exception        } catch (e: UnsupportedPaymentMethodException) {            // handle exception        }    }}

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class CheckoutActivity : AppCompatActivity() {
    private fun createForm(paymentMethodType: String) {        // 👇 Get the list of input fields to render        val requiredInputElementTypes = rawDataManager.getRequiredInputElementTypes()        // simple example of creating inputs based on type        val inputElements = requiredInputElementTypes.map { type ->            TextInputLayout(this).apply {                tag = type                hint = type.name                addView(TextInputEditText(context).apply {                    id = View.generateViewId()                    doAfterTextChanged {                        rawDataManager.setRawData(getRawData(paymentMethodType))                    }                    layoutParams = LinearLayout.LayoutParams(                      RelativeLayout.LayoutParams.MATCH_PARENT,                      RelativeLayout.LayoutParams.WRAP_CONTENT,                    )                })            }        }
        val formContainer = findViewById<ViewGroup>(R.id.formContainer)
        inputElements.forEach { formContainer.addView(it) }    }
    private fun getInputTypeValue(inputElementType: PrimerInputElementType) =        findViewById<ViewGroup>(R.id.formContainer).findViewWithTag<TextInputLayout>(            inputElementType        ).editText?.text?.trim().toString()}

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data class PrimerCardData(    val cardNumber: String, // ex. 4242424242424242    val expiryDate: String, // ex. 01/2024, 1/2024, 12/2024...    val cvv: String, // ex. 244    val cardholderName: String? = null,)
// 👇 Set your raw data on the managerrawDataManager.setRawData(getRawData(paymentMethodType))

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private val rawDataManagerListener: PrimerHeadlessUniversalCheckoutRawDataManagerListener =        object : PrimerHeadlessUniversalCheckoutRawDataManagerListener {          // 👇 Implement the validation function to receive updates on the raw data validation changes          override fun onValidationChanged(                isValid: Boolean,                errors: List<PrimerInputValidationError>            ) {              // Enable your submit button when `isValid == true`                submitButton.isEnabled = isValid            }        }

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// 👇 Submit the data that have been set in prior stepssubmitButton.setOnClickListener { rawDataManager.submit() }

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rawDataManager.cleanup()

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private val listener = object : PrimerHeadlessUniversalCheckoutUiListener {  override fun onPreparationStarted(paymentMethodType: String) {    // e.g. show a loading screen.  }}

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private val listener = object : PrimerHeadlessUniversalCheckoutListener {    override fun onTokenizationStarted(paymentMethodType: String) {        // e.g. hide a loading screen.    }}

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private val listener = object : PrimerHeadlessUniversalCheckoutUiListener {    override fun onPaymentMethodShowed(paymentMethodType: String) {        // e.g. hide a loading screen.    }}

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private val listener = object : PrimerHeadlessUniversalCheckoutListener {    override fun onFailed(error: PrimerError, checkoutData: PrimerCheckoutData?) {        // your custom method to show an error view        showErrorView(error)    }}