# Payment Method Select

Displays the customer's saved payment methods and allows selection or adding new ones.

***

## Usage

```typescript
const paymentSelect = client.components.paymentMethodSelect({
  containerId: 'payment-methods',
  customerId: 'cus_xxx',
  onSelect: (paymentMethod) => {
    console.log('Selected:', paymentMethod.id);
  },
  onAddNew: (type) => {
    console.log('Add new payment method:', type);
  },
});
```

***

## Configuration

### PaymentMethodSelectConfig

| Property                  | Type                                | Required | Description                              |
| ------------------------- | ----------------------------------- | -------- | ---------------------------------------- |
| `containerId`             | `string`                            | Yes      | ID of the container element              |
| `customerId`              | `string`                            | Yes      | Customer ID to fetch payment methods for |
| `selectedPaymentMethodId` | `string`                            | No       | Pre-select a payment method              |
| `theme`                   | `ThemeConfig`                       | No       | Custom theme configuration               |
| `onSelect`                | `(pm: PaymentMethod) => void`       | No       | Called when a payment method is selected |
| `onAddNew`                | `(type: PaymentMethodType) => void` | No       | Called when "Add New" is clicked         |
| `onBack`                  | `() => void`                        | No       | Called when "Back" is clicked            |
| `onError`                 | `(error: Error) => void`            | No       | Called on errors                         |

***

## Payment Method Types

The component supports these payment method types:

| Type   | Description                 |
| ------ | --------------------------- |
| `CARD` | Credit or debit card        |
| `ACH`  | Bank account (ACH transfer) |

***

## PaymentMethod Object

The `onSelect` callback receives a `PaymentMethod` object:

```typescript
interface PaymentMethod {
  id: string;
  type: 'CARD' | 'ACH';
  customer_id: string;
  is_default: boolean;
  card?: {
    brand: string;
    last_four: string;
    exp_month: number;
    exp_year: number;
  };
  ach?: {
    bank_name: string;
    last_four: string;
    account_type: 'checking' | 'savings';
  };
}
```

***

## Example

```html
<div id="payment-methods"></div>

<script type="module">
  import { AlternativeClient } from '@getalternative/partner-sdk';

  const client = new AlternativeClient({
    clientId: 'your-client-id',
    clientSecret: 'your-client-secret',
  });

  const select = client.components.paymentMethodSelect({
    containerId: 'payment-methods',
    customerId: 'cus_abc123',
    onSelect: (pm) => {
      // Proceed to confirmation with selected method
      proceedToConfirmation(pm.id);
    },
    onAddNew: (type) => {
      // Show add payment method form
      showAddPaymentMethodForm(type);
    },
  });
</script>
```

***

## Display

The component shows:

* List of saved payment methods with icons
* Card brand and last 4 digits for cards
* Bank name and last 4 digits for ACH
* Radio buttons for selection
* "Add Credit Card" and "Add Bank Account" buttons
* "Continue to Payment" button when a method is selected


---

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