import {z} from 'zod'

export type VatSettingsRequest = {name?: string | undefined, number?: string | undefined} | {[key: string]: unknown};

export type CreateApiSettingInvoiceArgs = {body: {prefix?: string | undefined, orderReturnURL?: string | undefined, startNumber?: number | undefined, paymentsDue?: number | undefined, lateFees?: number | undefined, lateFeesTax?: number | undefined, reminders?: number | undefined, reminders4suspend?: number | undefined, days2send?: number | undefined, 'total-order'?: Array<string> | undefined, defaultCurrency?: number | undefined, currency?: Array<string> | undefined, exchangerate?: number | undefined, vat?: VatSettingsRequest | undefined, companyRegistration?: string | undefined, fixedDiscount?: boolean | undefined, discountCode?: boolean | undefined} | {[key: string]: unknown}};

export type CreateApiSettingInvoiceOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const apiResponse = z.object({success: z.boolean().optional()}).and(z.record(z.string(), z.unknown()));

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
};

/**
 * Update invoice settings
 * 
 * POST /setting/invoice
 */
export const createApiSettingInvoice = async (args: CreateApiSettingInvoiceArgs, options?: CreateApiSettingInvoiceOptions) => {
const {baseUrl = "https://demo.onlinebillingform.com/api/v2", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/setting/invoice${query.size > 0 ? `?${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(apiResponse, await res.json())
};