> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dodopayments.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Adaptor SvelteKit

> Pelajari cara mengintegrasikan Dodo Payments dengan proyek SvelteKit App Router Anda menggunakan Adaptor SvelteKit kami. Mencakup checkout, portal pelanggan, webhook, dan pengaturan lingkungan yang aman.

<CardGroup cols={2}>
  <Card title="Checkout Handler" icon="cart-shopping" href="#checkout-route-handler">
    Integrasikan checkout Dodo Payments ke dalam aplikasi SvelteKit Anda.
  </Card>

  <Card title="Customer Portal" icon="user" href="#customer-portal-route-handler">
    Izinkan pelanggan mengelola langganan dan detail.
  </Card>

  <Card title="Webhooks" icon="bell" href="#webhook-route-handler">
    Terima dan proses event webhook Dodo Payments.
  </Card>
</CardGroup>

## Instalasi

<Steps>
  <Step title="Install the package">
    Jalankan perintah berikut di root proyek Anda:

    ```bash theme={null}
    npm install @dodopayments/sveltekit
    ```
  </Step>

  <Step title="Set up environment variables">
    Buat file <code>.env</code> di root proyek Anda:

    ```env expandable theme={null}
    DODO_PAYMENTS_API_KEY=your-api-key
    DODO_PAYMENTS_WEBHOOK_KEY=your-webhook-secret
    DODO_PAYMENTS_ENVIRONMENT="test_mode" or "live_mode"
    DODO_PAYMENTS_RETURN_URL=https://yourdomain.com/checkout/success
    ```

    <Warning>
      Jangan pernah commit file <code>.env</code> atau rahasia ke kontrol versi.
    </Warning>
  </Step>
</Steps>

## Contoh Pengelola Rute

<Info>
  Semua contoh mengasumsikan Anda menggunakan SvelteKit App Router.
</Info>

<Tabs>
  <Tab title="Checkout Handler">
    <Info>
      Gunakan handler ini untuk mengintegrasikan checkout Dodo Payments ke dalam aplikasi SvelteKit Anda. Mendukung alur pembayaran statis (GET), dinamis (POST), dan sesi (POST).
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/checkout/+server.ts
      import { Checkout } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

      const checkoutGetHandler = Checkout({
          bearerToken: DODO_PAYMENTS_API_KEY,
          returnUrl: DODO_PAYMENTS_RETURN_URL,
          environment: DODO_PAYMENTS_ENVIRONMENT,
          type: "static",
      });

      const checkoutPostHandler = Checkout({
          bearerToken: DODO_PAYMENTS_API_KEY,
          returnUrl: DODO_PAYMENTS_RETURN_URL,
          environment: DODO_PAYMENTS_ENVIRONMENT,
          type: "session", // or "dynamic" for dynamic link
      });

      export const GET = checkoutGetHandler.GET;
      export const POST = checkoutPostHandler.POST;
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Static Checkout Curl example expandable theme={null}
      curl --request GET \
      --url 'https://example.com/api/checkout?productId=pdt_fqJhl7pxKWiLhwQR042rh' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Dynamic Checkout Curl example expandable theme={null}
      curl --request POST \
      --url https://example.com/api/checkout \
      --header 'Content-Type: application/json' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test \
      --data '{ 
      "billing": {
        "city": "Texas",
        "country": "US",
        "state": "Texas",
        "street": "56, hhh",
        "zipcode": "560000"
      },
      "customer": {
        "email": "test@example.com",
        	"name": "test"
      },
      "metadata": {},
      "payment_link": true,
        "product_id": "pdt_QMDuvLkbVzCRWRQjLNcs",
        "quantity": 1,
        "billing_currency": "USD",
        "discount_codes": ["IKHZ23M9GQ"],
        "return_url": "https://example.com",
        "trial_period_days": 10
      }'
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Checkout Session Curl example expandable theme={null}
      curl --request POST \
      --url https://example.com/api/checkout \
      --header 'Content-Type: application/json' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test \
      --data '{ 
      "product_cart": [
        {
          "product_id": "pdt_QMDuvLkbVzCRWRQjLNcs",
          "quantity": 1
        }
      ],
      "customer": {
        "email": "test@example.com",
        "name": "test"
      },
      "return_url": "https://example.com/success"
      }'
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Customer Portal Handler">
    <Info>
      Gunakan handler ini untuk memungkinkan pelanggan mengelola langganan dan detail melalui portal pelanggan Dodo Payments.
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/checkout/+server.ts
      import { CustomerPortal } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

      const customerPortalHandler = CustomerPortal({
          bearerToken: DODO_PAYMENTS_API_KEY,
          environment: DODO_PAYMENTS_ENVIRONMENT,
      });

      export const GET = customerPortalHandler.GET;
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Webhook Handler">
    <Info>
      Gunakan handler ini untuk menerima dan memproses event webhook Dodo Payments secara aman di aplikasi SvelteKit Anda.
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/webhook/+server.ts
      import { Webhooks } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_WEBHOOK_KEY } from '$env/static/private';

      export const POST = Webhooks({
          webhookKey: DODO_PAYMENTS_WEBHOOK_KEY,
          onPayload: async (payload) => {
              console.log(payload);
          }
      });
      ```
    </CodeGroup>
  </Tab>
</Tabs>

## Pengelola Rute Checkout

<Info>
  Dodo Payments mendukung tiga jenis alur pembayaran untuk mengintegrasikan pembayaran ke dalam situs web Anda, adaptor ini mendukung semua jenis alur pembayaran.
</Info>

* **Tautan Pembayaran Statis:** URL yang dapat dibagikan secara instan untuk pengumpulan pembayaran cepat tanpa kode.
* **Tautan Pembayaran Dinamis:** Menghasilkan tautan pembayaran secara programatis dengan detail kustom menggunakan API atau SDK.
* **Sesi Checkout:** Membuat pengalaman checkout yang aman dan dapat disesuaikan dengan keranjang produk dan detail pelanggan yang telah dikonfigurasi sebelumnya.

<AccordionGroup>
  <Accordion title="Static Checkout (GET)">
    ### Supported Query Parameters

    <ParamField query="productId" type="string" required>
      Pengidentifikasi produk (misalnya <code>?productId=pdt\_nZuwz45WAs64n3l07zpQR</code>).
    </ParamField>

    <ParamField query="quantity" type="integer">
      Kuantitas produk.
    </ParamField>

    <ParamField query="fullName" type="string">
      Nama lengkap pelanggan.
    </ParamField>

    <ParamField query="firstName" type="string">
      Nama depan pelanggan.
    </ParamField>

    <ParamField query="lastName" type="string">
      Nama belakang pelanggan.
    </ParamField>

    <ParamField query="email" type="string">
      Alamat email pelanggan.
    </ParamField>

    <ParamField query="country" type="string">
      Negara pelanggan.
    </ParamField>

    <ParamField query="addressLine" type="string">
      Baris alamat pelanggan.
    </ParamField>

    <ParamField query="city" type="string">
      Kota pelanggan.
    </ParamField>

    <ParamField query="state" type="string">
      Negara bagian/provinsi pelanggan.
    </ParamField>

    <ParamField query="zipCode" type="string">
      Kode pos/pasar pelanggan.
    </ParamField>

    <ParamField query="disableFullName" type="boolean">
      Nonaktifkan bidang nama lengkap.
    </ParamField>

    <ParamField query="disableFirstName" type="boolean">
      Nonaktifkan bidang nama depan.
    </ParamField>

    <ParamField query="disableLastName" type="boolean">
      Nonaktifkan bidang nama belakang.
    </ParamField>

    <ParamField query="disableEmail" type="boolean">
      Nonaktifkan bidang email.
    </ParamField>

    <ParamField query="disableCountry" type="boolean">
      Nonaktifkan bidang negara.
    </ParamField>

    <ParamField query="disableAddressLine" type="boolean">
      Nonaktifkan bidang baris alamat.
    </ParamField>

    <ParamField query="disableCity" type="boolean">
      Nonaktifkan bidang kota.
    </ParamField>

    <ParamField query="disableState" type="boolean">
      Nonaktifkan bidang negara bagian.
    </ParamField>

    <ParamField query="disableZipCode" type="boolean">
      Nonaktifkan bidang kode pos.
    </ParamField>

    <ParamField query="paymentCurrency" type="string">
      Tentukan mata uang pembayaran (misalnya <code>USD</code>).
    </ParamField>

    <ParamField query="showCurrencySelector" type="boolean">
      Tampilkan pemilih mata uang.
    </ParamField>

    <ParamField query="paymentAmount" type="integer">
      Tentukan jumlah pembayaran (misalnya <code>1000</code> untuk \$10.00).
    </ParamField>

    <ParamField query="showDiscounts" type="boolean">
      Tampilkan bidang diskon.
    </ParamField>

    <ParamField query="metadata_*" type="string">
      Setiap parameter kueri yang dimulai dengan <code>metadata\_</code> akan diteruskan sebagai metadata.
    </ParamField>

    <Warning>
      Jika <code>productId</code> hilang, handler mengembalikan respons 400. Parameter kueri tidak valid juga menghasilkan respons 400.
    </Warning>

    ### Format Respons

    Checkout statis mengembalikan respons JSON dengan URL checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/"
    }
    ```
  </Accordion>

  <Accordion title="Dynamic Checkout (POST)">
    * Kirim parameter sebagai body JSON dalam permintaan POST.
    * Mendukung pembayaran satu kali dan berulang.
    * Untuk daftar lengkap field body POST yang didukung, lihat:
      * [Request body for a One Time Payment Product](https://docs.dodopayments.com/api-reference/payments/post-payments)
      * [Request body for a Subscription Product](https://docs.dodopayments.com/api-reference/subscriptions/post-subscriptions)

    ### Format Respons

    Checkout dinamis mengembalikan respons JSON dengan URL checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/"
    }
    ```
  </Accordion>

  <Accordion title="Checkout Sessions (POST)">
    Sesi checkout menyediakan pengalaman checkout yang lebih aman, terhosting, yang menangani alur pembayaran lengkap untuk pembelian satu kali maupun langganan dengan kontrol kustomisasi penuh.

    Lihat [Panduan Integrasi Sesi Checkout](https://docs.dodopayments.com/developer-resources/checkout-session) untuk detail lebih lanjut dan daftar lengkap bidang yang didukung.

    ### Format Respons

    Sesi checkout mengembalikan respons JSON dengan URL checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/session/..."
    }
    ```
  </Accordion>
</AccordionGroup>

## Pengelola Rute Portal Pelanggan

Pengelola Rute Portal Pelanggan memungkinkan Anda untuk mengintegrasikan portal pelanggan Dodo Payments ke dalam aplikasi SvelteKit Anda dengan mulus.

### Parameter Kueri

<ParamField query="customer_id" type="string" required>
  ID pelanggan untuk sesi portal (misalnya <code>?customer\_id=cus\_123</code>).
</ParamField>

<ParamField query="send_email" type="boolean">
  Jika diatur ke <code>true</code>, mengirimkan email ke pelanggan dengan tautan portal.
</ParamField>

<Warning>
  Mengembalikan 400 jika <code>customer\_id</code> hilang.
</Warning>

## Pengelola Rute Webhook

* **Metode:** Hanya permintaan POST yang didukung. Metode lain mengembalikan 405.
* **Verifikasi Tanda Tangan:** Memverifikasi tanda tangan webhook menggunakan <code>webhookKey</code>. Mengembalikan 401 jika verifikasi gagal.
* **Validasi Payload:** Divalidasi dengan Zod. Mengembalikan 400 untuk payload yang tidak valid.
* **Penanganan Kesalahan:**
  * 401: Tanda tangan tidak valid
  * 400: Payload tidak valid
  * 500: Kesalahan internal selama verifikasi
* **Rute Acara:** Memanggil pengelola acara yang sesuai berdasarkan jenis payload.

### Handler Event Webhook yang Didukung

<CodeGroup>
  ```typescript Typescript expandable theme={null}
  onPayload?: (payload: WebhookPayload) => Promise<void>;
  onPaymentSucceeded?: (payload: WebhookPayload) => Promise<void>;
  onPaymentFailed?: (payload: WebhookPayload) => Promise<void>;
  onPaymentProcessing?: (payload: WebhookPayload) => Promise<void>;
  onPaymentCancelled?: (payload: WebhookPayload) => Promise<void>;
  onRefundSucceeded?: (payload: WebhookPayload) => Promise<void>;
  onRefundFailed?: (payload: WebhookPayload) => Promise<void>;
  onDisputeOpened?: (payload: WebhookPayload) => Promise<void>;
  onDisputeExpired?: (payload: WebhookPayload) => Promise<void>;
  onDisputeAccepted?: (payload: WebhookPayload) => Promise<void>;
  onDisputeCancelled?: (payload: WebhookPayload) => Promise<void>;
  onDisputeChallenged?: (payload: WebhookPayload) => Promise<void>;
  onDisputeWon?: (payload: WebhookPayload) => Promise<void>;
  onDisputeLost?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionActive?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionOnHold?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionRenewed?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionPlanChanged?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionCancelled?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionFailed?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionExpired?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionUpdated?: (payload: WebhookPayload) => Promise<void>;
  onLicenseKeyCreated?: (payload: WebhookPayload) => Promise<void>;
  onAbandonedCheckoutDetected?: (payload: WebhookPayload) => Promise<void>;
  onAbandonedCheckoutRecovered?: (payload: WebhookPayload) => Promise<void>;
  onDunningStarted?: (payload: WebhookPayload) => Promise<void>;
  onDunningRecovered?: (payload: WebhookPayload) => Promise<void>;
  onCreditAdded?: (payload: WebhookPayload) => Promise<void>;
  onCreditDeducted?: (payload: WebhookPayload) => Promise<void>;
  onCreditExpired?: (payload: WebhookPayload) => Promise<void>;
  onCreditRolledOver?: (payload: WebhookPayload) => Promise<void>;
  onCreditRolloverForfeited?: (payload: WebhookPayload) => Promise<void>;
  onCreditOverageCharged?: (payload: WebhookPayload) => Promise<void>;
  onCreditManualAdjustment?: (payload: WebhookPayload) => Promise<void>;
  onCreditBalanceLow?: (payload: WebhookPayload) => Promise<void>;
  ```
</CodeGroup>

***

## Prompt untuk LLM

```

You are an expert SvelteKit developer assistant. Your task is to guide a user through integrating the @dodopayments/sveltekit adapter into their existing SvelteKit project.

The @dodopayments/sveltekit adapter provides route handlers for Dodo Payments' Checkout, Customer Portal, and Webhook functionalities, designed for the SvelteKit App Router.

First, install the necessary packages. Use the package manager appropriate for your project (npm, yarn, or bun) based on the presence of lock files (e.g., package-lock.json for npm, yarn.lock for yarn, bun.lockb for bun):

npm install @dodopayments/sveltekit

Here's how you should structure your response:

    Ask the user which functionalities they want to integrate.

"Which parts of the @dodopayments/sveltekit adapter would you like to integrate into your project? You can choose one or more of the following:

    Checkout Route Handler (for handling product checkouts)

    Customer Portal Route Handler (for managing customer subscriptions/details)

    Webhook Route Handler (for receiving Dodo Payments webhook events)

    All (integrate all three)"

    Based on the user's selection, provide detailed integration steps for each chosen functionality.

If Checkout Route Handler is selected:

Purpose: This handler manages different types of checkout flows. All checkout types (static, dynamic, and sessions) return JSON responses with checkout URLs for programmatic handling.
File Creation: Create a new file at app/checkout/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/checkout/+server.ts
import { Checkout } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

const checkoutGetHandler = Checkout({
    bearerToken: DODO_PAYMENTS_API_KEY,
    returnUrl: DODO_PAYMENTS_RETURN_URL,
    environment: DODO_PAYMENTS_ENVIRONMENT,
    type: "static",
});

const checkoutPostHandler = Checkout({
    bearerToken: DODO_PAYMENTS_API_KEY,
    returnUrl: DODO_PAYMENTS_RETURN_URL,
    environment: DODO_PAYMENTS_ENVIRONMENT,
    type: "session", // or "dynamic" for dynamic link
});

export const GET = checkoutGetHandler.GET;
export const POST = checkoutPostHandler.POST;

Configuration & Usage:

    bearerToken: Your Dodo Payments API key. It's recommended to set this via the DODO_PAYMENTS_API_KEY environment variable.

    returnUrl: (Optional) The URL to redirect the user to after a successful checkout.

    environment: (Optional) Set to "test_mode" for testing, or omit/set to "live_mode" for production.

    type: (Optional) Set to "static" for GET/static checkout, "dynamic" for POST/dynamic checkout, or "session" for POST/checkout sessions. Defaults to "static".

Static Checkout (GET) Query Parameters:

    productId (required): Product identifier (e.g., ?productId=pdt_nZuwz45WAs64n3l07zpQR)

    quantity (optional): Quantity of the product

    Customer Fields (optional): fullName, firstName, lastName, email, country, addressLine, city, state, zipCode

    Disable Flags (optional, set to true to disable): disableFullName, disableFirstName, disableLastName, disableEmail, disableCountry, disableAddressLine, disableCity, disableState, disableZipCode

    Advanced Controls (optional): paymentCurrency, showCurrencySelector, paymentAmount, showDiscounts

    Metadata (optional): Any query parameter starting with metadata_ (e.g., ?metadata_userId=abc123)
    
    Returns: {"checkout_url": "https://checkout.dodopayments.com/..."}

Dynamic Checkout (POST) - Returns JSON with checkout_url: Parameters are sent as a JSON body. Supports both one-time and recurring payments. Returns: {"checkout_url": "https://checkout.dodopayments.com/..."}. For a complete list of supported POST body fields, refer to:

    Docs - One Time Payment Product: https://docs.dodopayments.com/api-reference/payments/post-payments

    Docs - Subscription Product: https://docs.dodopayments.com/api-reference/subscriptions/post-subscriptions

Checkout Sessions (POST) - (Recommended) A more customizable checkout experience. Returns JSON with checkout_url: Parameters are sent as a JSON body. Supports both one-time and recurring payments. Returns: {"checkout_url": "https://checkout.dodopayments.com/session/..."}. For a complete list of supported fields, refer to:

  Checkout Sessions Integration Guide: https://docs.dodopayments.com/developer-resources/checkout-session

Error Handling: If productId is missing or other parameters are invalid, the handler will return a 400 response.

If Customer Portal Route Handler is selected:

Purpose: This handler redirects authenticated users to their Dodo Payments customer portal.
File Creation: Create a new file at app/customer-portal/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/checkout/+server.ts
import { CustomerPortal } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

const customerPortalHandler = CustomerPortal({
    bearerToken: DODO_PAYMENTS_API_KEY,
    environment: DODO_PAYMENTS_ENVIRONMENT,
});

export const GET = customerPortalHandler.GET;

Query Parameters:

    customer_id (required): The customer ID for the portal session (e.g., ?customer_id=cus_123)

    send_email (optional, boolean): If set to true, sends an email to the customer with the portal link.

    Returns 400 if customer_id is missing.

If Webhook Route Handler is selected:

Purpose: This handler processes incoming webhook events from Dodo Payments, allowing your application to react to events like successful payments, refunds, or subscription changes.
File Creation: Create a new file at app/api/webhook/dodo-payments/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/webhook/+server.ts
import { Webhooks } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_WEBHOOK_KEY } from '$env/static/private';

export const POST = Webhooks({
    webhookKey: DODO_PAYMENTS_WEBHOOK_KEY,
    onPayload: async (payload) => {
        console.log(payload);
    }
});

Handler Details:

    Method: Only POST requests are supported. Other methods return 405.

    Signature Verification: The handler verifies the webhook signature using the webhookKey and returns 401 if verification fails.

    Payload Validation: The payload is validated with Zod. Returns 400 for invalid payloads.

Error Handling:

    401: Invalid signature

    400: Invalid payload

    500: Internal error during verification

Event Routing: Calls the appropriate event handler based on the payload type.

Supported Webhook Event Handlers:

    onPayload?: (payload: WebhookPayload) => Promise<void>

    onPaymentSucceeded?: (payload: WebhookPayload) => Promise<void>

    onPaymentFailed?: (payload: WebhookPayload) => Promise<void>

    onPaymentProcessing?: (payload: WebhookPayload) => Promise<void>

    onPaymentCancelled?: (payload: WebhookPayload) => Promise<void>

    onRefundSucceeded?: (payload: WebhookPayload) => Promise<void>

    onRefundFailed?: (payload: WebhookPayload) => Promise<void>

    onDisputeOpened?: (payload: WebhookPayload) => Promise<void>

    onDisputeExpired?: (payload: WebhookPayload) => Promise<void>

    onDisputeAccepted?: (payload: WebhookPayload) => Promise<void>

    onDisputeCancelled?: (payload: WebhookPayload) => Promise<void>

    onDisputeChallenged?: (payload: WebhookPayload) => Promise<void>

    onDisputeWon?: (payload: WebhookPayload) => Promise<void>

    onDisputeLost?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionActive?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionOnHold?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionRenewed?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionPlanChanged?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionCancelled?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionFailed?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionExpired?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionUpdated?: (payload: WebhookPayload) => Promise<void>

    onLicenseKeyCreated?: (payload: WebhookPayload) => Promise<void>

    onAbandonedCheckoutDetected?: (payload: WebhookPayload) => Promise<void>

    onAbandonedCheckoutRecovered?: (payload: WebhookPayload) => Promise<void>

    onDunningStarted?: (payload: WebhookPayload) => Promise<void>

    onDunningRecovered?: (payload: WebhookPayload) => Promise<void>

    onCreditAdded?: (payload: WebhookPayload) => Promise<void>

    onCreditDeducted?: (payload: WebhookPayload) => Promise<void>

    onCreditExpired?: (payload: WebhookPayload) => Promise<void>

    onCreditRolledOver?: (payload: WebhookPayload) => Promise<void>

    onCreditRolloverForfeited?: (payload: WebhookPayload) => Promise<void>

    onCreditOverageCharged?: (payload: WebhookPayload) => Promise<void>

    onCreditManualAdjustment?: (payload: WebhookPayload) => Promise<void>

    onCreditBalanceLow?: (payload: WebhookPayload) => Promise<void>

    Environment Variable Setup:

To ensure the adapter functions correctly, you will need to manually set up the following environment variables in your SvelteKit project's deployment environment (e.g., Vercel, Netlify, AWS, etc.):

    DODO_PAYMENTS_API_KEY: Your Dodo Payments API Key (required for Checkout and Customer Portal).

    RETURN_URL: (Optional) The URL to redirect to after a successful checkout (for Checkout handler).

    DODO_PAYMENTS_WEBHOOK_SECRET: Your Dodo Payments Webhook Secret (required for Webhook handler).

Example .env file:

DODO_PAYMENTS_API_KEY=your-api-key
DODO_PAYMENTS_WEBHOOK_KEY=your-webhook-secret
DODO_PAYMENTS_RETURN_URL=your-return-url
DODO_PAYMENTS_ENVIRONMENT="test_mode" or "live_mode"

Usage in your code:

bearerToken: process.env.DODO_PAYMENTS_API_KEY
webhookKey: process.env.DODO_PAYMENTS_WEBHOOK_KEY

Important: Never commit sensitive environment variables directly into your version control. Use environment variables for all sensitive information.

If the user needs assistance setting up environment variables for their specific deployment environment, ask them what platform they are using (e.g., Vercel, Netlify, AWS, etc.), and provide guidance. You can also add comments to their PR or chat depending on the context

```