import {z} from 'zod'

export type ImportCreditNoteRequest = {number: string, amount: number, valueDate?: string | undefined};

export type CreateApiInvoicesInvoiceIdCreditNotesArgs = {invoiceId: string, body: ImportCreditNoteRequest};

export type CreateApiInvoicesInvoiceIdCreditNotesOptions = {baseUrl?: string | undefined, BillerAccessTokenStaging?: string | undefined, fetch?: typeof fetch | undefined};

export const creditNoteExternalData = z.object({connectorType: z.enum(["XERO", "QUICKBOOKS", "PLATFORM"]).optional(), id: z.string().optional()});

export const creditNoteResponse = z.object({id: z.string().optional(), number: z.string().optional(), amount: z.number().optional(), valueDate: z.string().optional(), externalData: z.array(creditNoteExternalData).optional()});

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
};

/**
 * Import a credit note
 * 
 * POST /invoices/{invoiceId}/credit_notes
 * 
 * Also accepts auth: Biller Access Token (Production)
 */
export const createApiInvoicesInvoiceIdCreditNotes = async (args: CreateApiInvoicesInvoiceIdCreditNotesArgs, options?: CreateApiInvoicesInvoiceIdCreditNotesOptions) => {
const {baseUrl = "https://api.adfin.com/api", fetch: fetchFn = fetch, BillerAccessTokenStaging} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/invoices/${encodeURIComponent(String(args.invoiceId))}/credit_notes${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(creditNoteResponse, await res.json())
};