import {z} from 'zod'

export type Party = {id?: string | undefined, name: string, business_id?: string | undefined, vat_number?: string | undefined, address_line1?: string | undefined, postal_code?: string | undefined, city?: string | undefined, country_code?: string | undefined, email?: string | undefined, einvoice_address?: string | undefined, einvoice_operator?: string | undefined, default_payment_terms_days?: number | undefined, default_vat_code?: string | undefined, default_vat_rate_basis_points?: number | undefined, default_invoice_language?: string | undefined};

export type InvoiceLine = {description: string, quantity: string, unit_price_cents: number, vat_rate_basis_points?: (number | null) | undefined, vat_code?: string | undefined, net_cents: number, vat_cents: number, gross_cents: number};

export type InvoiceDraftInput = {customer_id?: string | undefined, draft_id?: string | undefined, customer: Party, lines: Array<InvoiceLine>, issue_date?: string | undefined, delivery_date?: string | undefined, due_date?: string | undefined, seller_iban?: string | undefined, seller_vat_id?: string | undefined, terms_days?: number | undefined, note?: string | undefined, language?: string | undefined, delivery_channel?: ('maventa_einvoice' | 'email_pdf' | 'pdf_download') | undefined, email_subject?: string | undefined, email_message?: string | undefined, net_cents?: number | undefined, vat_cents?: number | undefined, gross_cents?: number | undefined};

export type CreateApiInvoiceRecurringArgs = {body: {customer_id?: string | undefined, template_id?: string | undefined, name: string, cadence_months: number, next_issue_date: string, draft: InvoiceDraftInput}};

export type CreateApiInvoiceRecurringOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiInvoiceRecurringResponse = 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
};

/**
 * Create or update a recurring invoice template
 * 
 * POST /invoice-recurring
 */
export const createApiInvoiceRecurring = async (args: CreateApiInvoiceRecurringArgs, options?: CreateApiInvoiceRecurringOptions) => {
const {baseUrl = "https://api.app.lastaccountingcompany.com/portal", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

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

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