## Get invoice preview

`client.AIGateway.Billing.InvoicePreview(ctx, query) (*BillingInvoicePreviewResponse, error)`

**get** `/accounts/{account_id}/ai-gateway/billing/invoice-preview`

Retrieve a preview of the upcoming invoice including line items and tax.

### Parameters

- `query BillingInvoicePreviewParams`

  - `AccountID param.Field[string]`

    Cloudflare account ID.

### Returns

- `type BillingInvoicePreviewResponse struct{…}`

  - `ID string`

  - `AmountDue float64`

  - `AmountPaid float64`

  - `AmountRemaining float64`

  - `Currency string`

  - `InvoiceLines []BillingInvoicePreviewResponseInvoiceLine`

    - `Amount float64`

    - `Currency string`

    - `Description string`

    - `Period BillingInvoicePreviewResponseInvoiceLinesPeriod`

      - `End float64`

      - `Start float64`

    - `Pricing BillingInvoicePreviewResponseInvoiceLinesPricing`

      - `UnitAmountDecimal string`

    - `Quantity float64`

    - `PretaxCreditAmounts []BillingInvoicePreviewResponseInvoiceLinesPretaxCreditAmount`

      - `Amount float64`

      - `Type string`

      - `CreditBalanceTransaction string`

      - `Discount string`

  - `PeriodEnd float64`

  - `PeriodStart float64`

  - `Status BillingInvoicePreviewResponseStatus`

    - `const BillingInvoicePreviewResponseStatusDraft BillingInvoicePreviewResponseStatus = "draft"`

    - `const BillingInvoicePreviewResponseStatusOpen BillingInvoicePreviewResponseStatus = "open"`

    - `const BillingInvoicePreviewResponseStatusPaid BillingInvoicePreviewResponseStatus = "paid"`

    - `const BillingInvoicePreviewResponseStatusUncollectible BillingInvoicePreviewResponseStatus = "uncollectible"`

    - `const BillingInvoicePreviewResponseStatusVoid BillingInvoicePreviewResponseStatus = "void"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/ai_gateway"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  response, err := client.AIGateway.Billing.InvoicePreview(context.TODO(), ai_gateway.BillingInvoicePreviewParams{
    AccountID: cloudflare.F("account_id"),
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.ID)
}
```

#### Response

```json
{
  "errors": [
    {
      "code": 0,
      "message": "message"
    }
  ],
  "messages": [
    {
      "code": 0,
      "message": "message"
    }
  ],
  "result": {
    "id": "id",
    "amount_due": 0,
    "amount_paid": 0,
    "amount_remaining": 0,
    "currency": "currency",
    "invoice_lines": [
      {
        "amount": 0,
        "currency": "currency",
        "description": "description",
        "period": {
          "end": 0,
          "start": 0
        },
        "pricing": {
          "unit_amount_decimal": "unit_amount_decimal"
        },
        "quantity": 0,
        "pretax_credit_amounts": [
          {
            "amount": 0,
            "type": "type",
            "credit_balance_transaction": "credit_balance_transaction",
            "discount": "discount"
          }
        ]
      }
    ],
    "period_end": 0,
    "period_start": 0,
    "status": "draft"
  },
  "success": true,
  "result_info": {
    "has_more": true,
    "page": 0,
    "per_page": 0,
    "total_count": 0
  }
}
```