import {z} from 'zod'

export type TransactionPaymentInput = {transaction_id: number, amount: number, posted_at: string, withholding_amount?: (number | null) | undefined};

export type CreditMemoPaymentInput = {credit_memo_id: number, amount: number, posted_at: string};

export type EmptyTransactionInput = {amount: number, payment_date: string, withholding_amount?: (number | null) | undefined};

export type CalculatePaymentInput = {transactions?: Array<TransactionPaymentInput> | undefined, credit_memos?: Array<CreditMemoPaymentInput> | undefined, empty_transactions?: Array<EmptyTransactionInput> | undefined};

export type CreateApiCoaApiV1InvoiceInvoiceIdCalculatePaymentArgs = {invoice_id: number, body: CalculatePaymentInput};

export type CreateApiCoaApiV1InvoiceInvoiceIdCalculatePaymentOptions = {baseUrl?: string | undefined, knoxApiToken?: string | undefined, fetch?: typeof fetch | undefined};

export const calculatePaymentOutput = z.object({total_due: z.number().gt(-1000000000000000000).lt(1000000000000000000), applied_payments: z.number().gt(-1000000000000000000).lt(1000000000000000000), applied_credits: z.number().gt(-1000000000000000000).lt(1000000000000000000), applied_withholding: z.number().gt(-1000000000000000000).lt(1000000000000000000), term_discounts: z.number().gt(-1000000000000000000).lt(1000000000000000000), remaining_due: z.number().gt(-1000000000000000000).lt(1000000000000000000)});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Calculate Invoice Payment
 * 
 * POST /coa/api/v1/invoice/{invoice_id}/calculate-payment
 */
export const createApiCoaApiV1InvoiceInvoiceIdCalculatePayment = async (args: CreateApiCoaApiV1InvoiceInvoiceIdCalculatePaymentArgs, options?: CreateApiCoaApiV1InvoiceInvoiceIdCalculatePaymentOptions) => {
const {baseUrl = "https://api.meetcampfire.com", fetch: fetchFn = fetch, knoxApiToken} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (knoxApiToken !== undefined) headers.set("Authorization", knoxApiToken)

const url = `${baseUrl.replace(/\/+$/, '')}/coa/api/v1/invoice/${encodeURIComponent(String(args.invoice_id))}/calculate-payment${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(calculatePaymentOutput, await res.json())
};